Page 2 Copyright © 2014 YEALINK NETWORK TECHNOLOGY Copyright © 2014 Yealink Network Technology CO., LTD. All rights reserved. No parts of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, photocopying, recording, or otherwise, for any purpose, without the express written permission of Yealink Network Technology CO., LTD.
Page 3 Do not dispose of WEEE as unsorted municipal waste and have to collect such WEEE separately. We are striving to improve our documentation quality and we appreciate your feedback. Email your opinions and comments to DocsFeedback@yealink.com.
Page 4 Yealink IP phone firmware contains third-party software under the GNU General Public License (GPL). Yealink uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms and conditions of the license. The original GPL license, source code of components licensed under GPL and used in Yealink products can be downloaded from Yealink web site: http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.
Page 5  how to configure BroadSoft features on the BroadWorks web portal and IP phones. For support or service, please contact your Yealink reseller or go to Yealink Technical Support online: http://www.yealink.com/Support.aspx. The information detailed in this guide is applicable to firmware version 72 or higher. The firmware format is like x.x.x.x.rom.
Page 6 RFC 3261, SIP call flows and the sample configuration files. This section describes the changes to this guide for each release and guide version. For more information on changes, refer to version-specific release notes of Yealink IP phones online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
Page 7 About This Guide Contrast on page  Backlight on page  Time and Date on page  Key as Send on page  Anonymous Call on page  LDAP on page  Busy Lamp Field on page  Action URL on page ...
Page 8 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Capturing Packets on page  Major updates have occurred to the following section: Appendix B: Time Zones on page  Major updates have occurred to the following section: Configuring DSS Key on page ...
Page 9 About This Guide Logo Customization on page  Softkey Layout on page  Key as Send on page  Call Log on page  Live Dialpad on page  Auto Answer on page  Call Completion on page  Anonymous Call on page ...
Page 10 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Major updates have occurred to the following sections: Dial Plan on page  Transport Layer Security on page  Encrypting Configuration Files on page  Troubleshooting on page  Web user interface for each feature ...
Page 11: Table Of Contents
Table of Contents About This Guide ..............v Documentations ..........................v In This Guide ............................ v Summary of Changes ........................vi Changes for Release 72, Guide Version 72.25 ..............vi Changes for Release 72, Guide Version 72.1 ................ vi Changes for Release 71, Guide Version 71.165 ..............vii Changes for Release 71, Guide Version 71.141 ..............
Page 12 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones PPPoE ............................28 Configuring Transmission Methods of the Internet Port and PC Port ......... 29 Configuring PC Port Mode ..................... 31 Upgrading Firmware ........................34 Configuring Basic Features ............ 37 Power Indicator LED ........................38 Contrast ............................
Page 13 Table of Contents SIP Session Timer ......................... 104 Session Timer ..........................105 Call Hold ............................107 Call Forward ..........................110 Call Transfer ..........................116 Network Conference ........................117 Transfer on Conference Hang Up ....................118 Directed Call Pickup ........................119 Group Call Pickup ........................
Page 14 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones TR-069 Device Management ...................... 204 IPv6 Support ..........................206 Configuring Audio Features ..........211 Headset Prior ..........................211 Dual Headset ..........................212 Audio Codecs ..........................213 Acoustic Clarity Technology ......................217 Acoustic Echo Cancellation ....................217 Voice Activity Detection .......................
Page 15 Table of Contents Why doesn’t the IP phone display time and date correctly? ........... 257 Why do I get poor sound quality during a call? ..............257 What is the difference between a remote phone book and a local phone book? ..258 What is the difference among user name, register name and display name? .....
Page 16 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Call Transfer without Consultation ..................458 Call Transfer with Consultation .................... 462 Always Call Forward ......................467 Busy Call Forward ........................ 471 No Answer Call Forward ..................... 474 Call Conference ........................477 Appendix G: Sample Configuration File ...................
Page 17: Product Overview
Product Overview This chapter contains the following information about IP phones: VoIP Principle  SIP Components  SIP IP Phone Models  VoIP VoIP (Voice over Internet Protocol) is a technology using the Internet Protocol instead of traditional Public Switch Telephone Network (PSTN) technology for voice communications.
Page 18 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones SIP provides capabilities to: Determine the location of the target endpoint -- SIP supports address resolution,  name mapping, and call redirection. Determine media capabilities of the target endpoint -- Via Session Description ...
Page 19 IP phones comply with the SIP standard (RFC 3261), and they can only be used within a network that supports this model of phone. For a list of key features available on Yealink IP phones running the latest firmware, refer Key Features of IP Phones...
Page 20: Physical Features Of Ip Phones
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones In order to operate as SIP endpoints in your network successfully, IP phones must meet the following requirements: A working IP network is established.  Routers are configured for VoIP . ...
Page 21 Product Overview Power adapter: AC 100~240V input and DC 5V/1.2A output Power over Ethernet (IEEE 802.3af) SIP-T26P Physical Features: TI TITAN chipset and TI voice engine 132x64 graphic LCD 3 VoIP accounts, BroadSoft/Avaya/Asterisk validated HD Voice: HD Codec, HD Handset, HD Speaker 45 keys including 13 DSS keys 1xRJ9 (4P4C) handset port 1xRJ9 (4P4C) headset port...
Page 22 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones SIP-T22P Physical Features: TI TITAN chipset and TI voice engine 132x64 graphic LCD 3 VoIP accounts, BroadSoft/Avaya/Asterisk validated HD Voice: HD Codec, HD Handset, HD Speaker 32 keys including 4 soft keys...
Page 23 Product Overview SIP-T21P Physical Features: 132x64 graphic LCD 2 VoIP accounts 31 keys including 4 soft keys 4 LEDs: 1xpower, 2xline, 1xmessage HD Voice: HD Codec, HD Handset, HD Speaker 1xRJ9 (4P4C) handset port 1xRJ9 (4P4C) headset port 2xRJ45 10/100Mbps Ethernet ports Power adapter: AC 100~240V input and DC 5V/600mA output Power over Ethernet (IEEE 802.3af) Wall Mount...
Page 24 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones SIP-T20P Physical Features: TI TITAN chipset and TI voice engine 3-line LCD consists of an icon line and two 15-character lines 2 VoIP accounts, BroadSoft/Avaya/Asterisk validated HD Voice: HD Codec, HD Handset, HD Speaker...
Page 25 Product Overview SIP-T19P Physical Features: 132x64 graphic LCD Single VoIP account 29 keys including 4 soft keys 1xRJ9 (4P4C) handset port 1xRJ9 (4P4C) headset port 2xRJ45 10/100Mbps Ethernet ports 1 LED: 1xpower Power adapter: AC 100~240V input and DC 5V/600mA output Power over Ethernet (IEEE 802.3af) Wall Mount...
Page 26 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones In addition to physical features introduced above, IP phones also support the following key features when running the latest firmware: Phone Features  Call Options: emergency call, call waiting, call hold, call mute, call forward, call transfer, call pickup, conference.
Page 27 Product Overview Dial URL via SIP server TR-069 Security  HTTPS (server/client) SRTP (RFC3711) Transport Layer Security (TLS) VLAN (802.1q), QoS Digest authentication using MD5/MD5-sess Secure configuration file via AES encryption Phone lock for personal privacy protection Admin/User configuration mode...
Page 28 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones...
Page 29: Getting Started
Getting Started This chapter provides basic information and installation instructions of IP phones. This chapter provides the following sections: Connecting the IP Phones  Initialization Process Overview  Verifying Startup  Reading Icons  Configuration Methods  Configuring Basic Network Parameters ...
Page 30 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Attach the stand: SIP-T28P/T26P SIP-T22P/T21P/T20P SIP-T19P...
Page 31 Getting Started Connect the handset and optional headset: SIP-T28P/T26P SIP-T22P/T21P/T20P/T19P Connect the network and power: AC power (Optional)  Power over Ethernet (PoE)  AC Power (Optional) To connect the AC power and network: Connect the DC plug of the power adapter to the DC5V port on the IP phone and connect the other end of the power adapter into an electrical power outlet.
Page 32 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Power over Ethernet With the included or a regular Ethernet cable, IP phones can be powered from a PoE-compliant switch or hub. To connect the PoE: Connect the Ethernet cable between the Internet port on the IP phone and an available port on the in-line power switch/hub.
Page 33 Getting Started Querying the DHCP (Dynamic Host Configuration Protocol) Server The IP phone is capable of querying a DHCP server. DHCP is enabled on the IP phone by default. The following network parameters can be obtained from the DHCP server during initialization: IP Address ...
Page 34 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The message “Initializing, Please Wait” appears on the LCD screen when the IP phone starts up. The main LCD screen displays the following: Time and date  Soft key labels (not applicable to SIP-T20P IP phones) ...
Page 35 Getting Started SIP-T28P SIP-T26P SIP-T22P SIP-T21P SIP-T20P SIP-T19P Description Do Not Disturb Call Forward/Forwar ded Calls Call Hold Call Mute Ringer volume is Phone Lock Received Calls Placed Calls Missed Calls Recording box is full A call cannot be recorded Recording starts successfully Recording...
Page 36: Phone User Interface
Access to specific features is restricted to the administrator. The default password is “admin“(case-sensitive). Not all features are available on phone user interface. For more information, refer to Yealink phone-specific user guide, available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. An administrator or a user can configure IP phones via web user interface. The default user name and password for the administrator to log into the web user interface are both “admin”...
Page 37 This entire process is called auto provisioning. For more information on auto provisioning, refer to Yealink_SIP-T2_Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. When modifying parameters, learn the following: Parameters in configuration files override those stored in the IP phone’s flash ...
Page 38 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones distinguish the comments. In order to get your IP phones running, you must perform basic network setup, such as IP address and subnet mask configuration. This section describes how to configure basic network parameters for IP phones.
Page 39 Getting Started Parameter DHCP Option Description Server available to the client. Specify a list of MIT-LCS UDP servers Log Server available to the client. Host Name Specify the name of the client. Specify the domain name that client should Domain Server use when resolving hostnames via DNS.
Page 40 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones DHCP on page 270. Configure DHCP on the IP phone. Configure static DNS address when DHCP is used. Web User Interface Navigate to: Local http://<phoneIPAddress>/servlet ?p=network&q=load Phone User Interface Configure DHCP on the IP phone.
Page 41 Getting Started Enter the desired values in the Primary DNS and Secondary DNS fields. Click Confirm to accept the change. A dialog box pops up to prompt that settings will take effect after a reboot. Click OK to reboot the IP phone. To configure DHCP via phone user interface: Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN Port->IPv4.
Page 42 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Procedure Network parameters can be configured manually using the configuration files or locally. Configure network parameters of the IP phone manually. Configuration File <y0000000000xx>.cfg For more information, refer to Static Network Settings on page 271.
Page 43 Getting Started Enter the desired values in the IP Address, Subnet Mask, Gateway, Primary DNS and Secondary DNS fields. Click Confirm to accept the change. A dialog box pops up to prompt that settings will take effect after a reboot. Click OK to reboot the IP phone.
Page 44: Pppoe
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones PPPoE (Point-to-Point Protocol over Ethernet) is a network protocol used by Internet Service Providers (ISPs) to provide Digital Subscriber Line (DSL) high speed Internet services. PPPoE allows an office or building-full of users to share a common DSL connection to the Internet.
Page 45 Getting Started Click OK to reboot the IP phone. To configure PPPoE via phone user interface: Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN Port->IPv4->PPPoE IP Client. Enter the user name and password in corresponding fields. Press the Save soft key to accept the change. The IP phone reboots automatically to make settings effective after a period of time.
Page 46 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Half-duplex Half-duplex transmission refers to transmitting voice or data in both directions, but in one direction at a time; this means one device can send data on the line, but not receive data simultaneously. You can configure the half-duplex transmission on both Internet port and PC port for the IP phone to transmit in 10Mbps or 100Mbps.
Page 47 Getting Started Procedure The transmission methods of Ethernet ports can be configured using the configuration files or locally. Configure the transmission methods of Ethernet ports. For more information, refer to Configuration File <y0000000000xx>.cfg Internet and PC Ports Transmission Methods on page 275.
Page 48 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones network as a stand-alone device with its own IP address. Router: The IP phone functions as a router, and provides a DHCP service for the  connected PC. If the PC port is unused, it can be disabled via web user interface or using configuration files.
Page 49 Getting Started 5) Enter the end IP address in the End IP Address field. Click Confirm to accept the change. A dialog box pops up to prompt that settings will take effect after a reboot. Click OK to reboot the IP phone. To disable the PC port via web user interface: Click on Network->PC Port.
Page 50 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 2) Enter the subnet mask in the Subnet Mask field. 3) Press to highlight the DHCP Server field, and then press the Enter soft key. 4) Select the desired value from the Server Status field.
Page 51 Getting Started Select firmware from the local system. Click Upgrade. A dialog box pops up to prompt “Firmware of the SIP Phone will be updated. It will take 5 minutes to complete. Please don't power off!”. Click OK to confirm the upgrade. Note Do not close and refresh the browser when the IP phone is upgrading firmware via web user interface.
Page 52: Upgrading Firmware
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones firmware. For more information, refer to Upgrading Firmware on page 279. Configure the way for the IP phone to check for configuration files. Local Web User Interface Navigate to: http://<phoneIPAddress>/servl et?p=settings-autop&q=load To configure the way for the IP phone to check for configuration files via web user interface: Click on Settings->Auto Provision.
Page 53: Configuring Basic Features
Configuring Basic Features This chapter provides information for making configuration changes for the following basic features: Power Indicator LED  Contrast  Backlight  Web Server Type  User Password  Administrator Password  Phone Lock  Time and Date ...
Page 54 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 180 Ring Workaround  Use Outbound Proxy in Dialog  SIP Session Timer  Session Timer  Call Hold  Call Forward  Call Transfer  Network Conference  Transfer on Conference Hang Up ...
Page 55 Configuring Basic Features Mute Power Light Flash Mute Power Light Flash allows the power indicator LED to flash when a call is mute. If this option is disabled, the status of the power indicator LED is determined by the option “Common Power Light On”.
Page 56 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired value from the pull-down list of Talk/Dial Power Light On. Click Confirm to accept the change. Contrast determines the readability of the texts displayed on the LCD screen. Adjusting the contrast to a comfortable level can optimize the screen viewing experience.
Page 57 Configuring Basic Features screen. To configure contrast via web user interface: Click on Settings->Preference. Select the desired value from the pull-down list of Contrast. Click Confirm to accept the change. To configure contrast via phone user interface (applicable to SIP-T28P IP phones and EXP39 connected to SIP-T26P and SIP-T28P IP phones): Press Menu->Settings->Basic Settings->Display->Contrast.
Page 58 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Backlight determines the brightness of the LCD screen display, allowing users to read easily in dark environments. Backlight time specifies the delay time to turn off the backlight when the IP phone is inactive. Backlight time is only applicable to SIP-T22P , SIP-T26P and SIP-T28P IP phones, and EXP39 connected to SIP-T26P and SIP-T28P IP phones.
Page 59 Configuring Basic Features LCD screen. Navigate to: http://<phoneIPAddress>/servlet ?p=settings-preference&q=load Configure the backlight of the Phone User Interface LCD screen. To configure backlight via web user interface: Click on Settings->Preference. Select the desired value from the pull-down list of Backlight Active Level (only applicable to SIP-T28P IP phones and the connected EXP39).
Page 60 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Web server type determines access protocol of the IP phone’s web user interface. IP phones support both HTTP and HTTPS protocols for accessing the web user interface. HTTP is an application protocol that runs on top of the TCP/IP suite of protocols. HTTPS is a web protocol that encrypts and decrypts user page requests as well as pages returned by the web server.
Page 61 Configuring Basic Features Enter the HTTPS port number in the HTTPS Port (1~65535) field. The default HTTPS port number is 443. Click Confirm to accept the change. A dialog box pops up to prompt that settings will take effect after a reboot. Click OK to reboot the IP phone.
Page 62 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones “user”. For security reasons, the user or administrator should change the default user password as soon as possible. Procedure User password can be changed using the configuration files or locally. Change the user password of the IP phone.
Page 63 Configuring Basic Features Procedure Administrator password can be changed using the configuration files or locally. Change the administrator password. Configuration File <y0000000000xx>.cfg For more information, refer to Administrator Password on page 289. Change the administrator password. Web User Interface Navigate to: http://<phoneIPAddress>/servlet Local ?p=security&q=load...
Page 64 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To change the administrator password via phone user interface: Press Menu->Settings->Advanced Settings (password: admin) ->Set Password. Enter the current administrator password in the Current PWD field. Enter new password in the New PWD field and Confirm PWD field.
Page 65 Configuring Basic Features Navigate to: http://<phoneIPAddress>/servl et?p=features-phonelock&q=lo Assign a keypad lock key. Navigate to: http://<phoneIPAddress>/servl et?p=dsskey&q=load&model= Configure the type of phone lock. Phone User Interface Assign a keypad lock key. To configure phone lock via web user interface: Click on Features->Phone Lock. Select the desired type from the pull-down list of Keypad Lock Type.
Page 66 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones In the desired DSS key field, select Keypad Lock from the pull-down list of Type. Click Confirm to accept the change. To configure the type of phone lock via phone user interface: Press Menu->Settings->Advanced Settings (password: admin) ->Phone...
Page 67: Time Zone
Configuring Basic Features them. The time and date display can use one of several different formats. SIP-T20P IP phones have a limited selection of date format due to a smaller display size. Time Zone A time zone is a region on Earth that has a uniform standard time. It is convenient for areas in close commercial or other communication to keep the same time.
Page 68: Time And Date
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Procedure Configuration changes can be performed using the configuration files or locally. Configure NTP by DHCP priority feature. Configure the NTP server, time zone and DST. Configure the time and date Configuration File <MAC>.cfg...
Page 69 Configuring Basic Features Select the desired value from the pull-down list of NTP By DHCP Priority. Click Confirm to accept the change. To configure the NTP server, time zone and DST via web user interface: Click on Settings->Time & Date. Select Disabled from the pull-down list of Manual Time.
Page 70 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones If you select Enabled, do one of the following: Mark the DST By Date radio box in the Fixed Type field. Enter the start time in the Start Date field. Enter the end time in the End Date field.
Page 71 Configuring Basic Features Click Confirm to accept the change. To configure the time and date manually via web user interface: Click on Settings->Time & Date. Select Enabled from the pull-down list of Manual Time. Enter the time and date in the corresponding fields. Click Confirm to accept the change.
Page 72 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To configure the NTP server and time zone via phone user interface: Press Menu->Settings->Basic Settings->Time & Date->SNTP Settings. Press , or the Switch soft key to select the time zone that applies to your area from the Time Zone field.
Page 73: Language
Configuring Basic Features Phone User Interface Web User Interface Portuguese SIP-T19P and SIP-T21P IP phones) Polish Spanish (not applicable to SIP-T19P and SIP-T21P IP phones) Spanish Turkish Turkish Not all of supported languages are available for selection. Languages available for selection depend on language packs currently loaded to the IP phone.
Page 74 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The default language used on the phone user interface is English. The default language used on the web user interface depends on the language preferences in the browser (if the language is not supported by the IP phone, the web user interface uses English). You can specify the languages for the phone user interface and web user interface respectively.
Page 75: Logo Customization
Before uploading your custom logo to IP phones, ensure your logo file is correctly formatted. For more information on customizing a logo file, refer to Yealink_SIP-T2_Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. Procedure The logo shown on the idle screen can be configured using the configuration files or locally.
Page 76 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones...
Page 77 Configuring Basic Features Select Custom logo from the pull-down list of Use Logo. Click Browse to select the logo file from your local system. Click Upload to upload the file. Click Confirm to accept the change. For SIP-T28P IP phones, the image logo is displayed on the idle screen. For SIP-T26P/T22P IP phones, the image logo screen and the idle screen are displayed alternately.
Page 78: Softkey Layout
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Enter the desired text (0~15 characters) in the Text Logo field. Click Confirm to accept the change. The registered account and the configured text logo are displayed alternately. Softkey layout is used to customize the soft keys at the bottom of the LCD screen to best meet users’...
Page 79 Configuring Basic Features Call State Default Soft Keys Optional Soft Keys Reject Empty Empty Empty Switch Connecting Empty Cancel Connecting Transfer Empty Empty Switch SemiAttendTrans Empty Cancel Send Empty History Delete Switch Dialing Cancel Line Favorite GPickup DPickup Empty Empty Empty Switch RingBack...
Page 80 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Call State Default Soft Keys Optional Soft Keys Cancel Reject Empty Empty Empty Switch Held Empty Answer Cancel Reject NewCall Transfer Empty Directory PreTrans Delete Switch Cancel Send Empty Empty Hold Switch...
Page 81 Configuring Basic Features To remove the soft key from the Selected Softkeys column, select the desired soft key and then click To adjust the display order of soft keys, select the desired soft key and then click The LCD screen displays the soft keys in the adjusted order. Click Confirm to accept the change.
Page 82 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Navigate to: http://<phoneIPAddress>/servlet ?p=features-audio&q=load Phone User Interface Configure the send key. To configure a send key via web user interface: Click on Features->General Information. Select the desired value from the pull-down list of Key As Send.
Page 83: Replace Rule
Configuring Basic Features Select the desired value from the pull-down list of Send Sound. Click Confirm to accept the change. To configure send key via phone user interface: Press Menu->Features->Key as Send. Press , or the Switch soft key to select # or * from the Key as Send field, or select Disable to disable this feature.
Page 84 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones You need to know the following basic regular expression syntax when creating dial plan: The dot “.” can be used as a placeholder or multiple placeholders for any string. Example: “12.” would match “123”, “1234”, “12345”, “12abc”, etc.
Page 85 Configuring Basic Features phone. For more information, refer to Dial Plan on page 302. Create the replace rule for the IP phone. Local Web User Interface Navigate to: http://<phoneIPAddress>/servlet ?p=settings-dialplan&q=load To create a replace rule via web user interface: Click on Settings->Dial Plan->Replace Rule. Enter the string in the Prefix field.
Page 86 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Delay Time for Dial-now Rule The IP phone will automatically dial out the entered number, which matches the dial-now rule, after a specified period of time. Procedure Dial-now rule can be created using the configuration files or locally.
Page 87 Configuring Basic Features Enter the desired line ID in the Account field or leave it blank. If you leave this field blank or enter 0, the dial-now rule will apply to all accounts on the IP phone. Click Add to add the dial-now rule. To configure the delay time for the dial-now rule via web user interface: Click on Features->General Information.
Page 88 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Area codes are also known as Numbering Plan Areas (NPAs). They usually indicate geographical areas in one country. When entered numbers match the predefined area code rule, the IP phone will automatically add the area code before the numbers when dialing out them.
Page 89 Configuring Basic Features Enter the desired line ID in the Account field or leave it blank. If you leave this field blank or enter 0, the area code rule will apply to all accounts on the IP phone. Click Confirm to accept the change. Block out rule prevents users from dialing out specific numbers.
Page 90 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Enter the desired line ID in the Account field or leave it blank. If you leave this field blank or enter 0, the block out rule will apply to all accounts on the IP phone.
Page 91 Configuring Basic Features ?p=features-general&q=load Configure the hotline number. Specify the time (in seconds) the Phone User Interface IP phone waits before automatically dialing out the hotline number. To configure hotline via web user interface: Click on Features->General Information. Enter the hotline number in the Hotline Number field. Enter the delay time in the Hotline Delay (0~10s) field.
Page 92 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Procedure Directory can be configured using the configuration files or locally. Specify the access URL of the Directory file. Configuration File <y0000000000xx>.cfg For more information, refer to Access URL of Directory Template on page 407.
Page 93 Configuring Basic Features To adjust the display order of list, select the desired list and then click The LCD screen displays the list(s) in the adjusted order. Click Confirm to accept the change. Search source list in dialing allows the IP phone to automatically search entries from the search source list based on the entered string, and display results on the pre-dialing screen.
Page 94 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones ?p=contacts-favorite&q=load To configure search source list in dialing via web user interface: Click on Directory->Setting. In the Search Source List In Dialing block, select the desired list from the Disabled column and then click The selected list appears in the Enabled column.
Page 95: Call Log
Configuring Basic Features Procedure Call log can be configured using the configuration files or locally. Configure call log feature. Configuration File <y0000000000xx>.cfg For more information, refer to Call on page 307. Configure call log feature. Navigate to: Web User Interface http://<phoneIPAddress>/servlet Local ?p=features-general&q=load...
Page 96: Missed Call Log
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Missed call log allows the IP phone to display the number of missed calls with an indicator icon on the idle screen, and to log missed calls in the Missed Calls list when the IP phone misses calls.
Page 97: Local Directory
Configuring Basic Features IP phones maintain a local directory. The local directory can store up to 1000 contacts and 5 groups. When adding a contact to the local directory, in addition to name and phone numbers, you can also specify the account, ring tone and group for the contact. Contacts and groups can be added either one by one or in batch using a local contact file.
Page 98 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To add a group to the local directory via web user interface: Click on Directory->Local Directory. In the Group Setting block, enter the desired group name in the Group field. Select the desired ring tone from the pull-down list of Ring field.
Page 99 Configuring Basic Features Select the desired account from the pull-down list of Account. If Auto is selected, the IP phone will use the first available account when placing calls to the contact from the local directory. Click Add to add the contact. To add a group to the local directory via phone user interface: Press Menu->Directory->Local Directory.
Page 100 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Live dialpad allows IP phones to automatically dial out the entered phone number after a specified period of time. Procedure Live dialpad can be configured using the configuration files or locally. Configure live dialpad.
Page 101 Configuring Basic Features enabled. Procedure Call waiting and call waiting tone can be configured using the configuration files or locally. Configure call waiting and call waiting tone. Configuration File <y0000000000xx>.cfg For more information, refer to Call Waiting on page 309. Configure call waiting.
Page 102: Auto Redial
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Click Confirm to accept the change. To configure call waiting tone via web user interface: Click on Features->Audio. Select the desired value from the pull-down list of Call Waiting Tone. Click Confirm to accept the change.
Page 103 Configuring Basic Features Configure auto redial feature. Navigate to: Web User Interface http://<phoneIPAddress>/servlet Local ?p=features-general&q=load Phone User Interface Configure auto redial feature. To configure auto redial via web user interface: Click on Features->General Information. Select the desired value from the pull-down list of Auto Redial. Enter the waiting time in the Auto Redial Interval (1~300s) field.
Page 104: Auto Answer
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Auto answer allows IP phones to automatically answer an incoming call. IP phones will not automatically answer the incoming call during a call even if auto answer is enabled. Auto answer is configurable on a per-line basis. Auto-Answer delay defines a period of delay time before the IP phone automatically answers incoming calls.
Page 105 Configuring Basic Features Select the desired value from the pull-down list of Auto Answer. Click Confirm to accept the change. To configure a period of delay time for auto answer via web user interface: Click on Features->General Information. Enter the desired time in the Auto-Answer Delay (1~4s) field. Click Confirm to accept the change.
Page 106 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Press the Save soft key to accept the change. Call completion allows users to monitor the busy party and establish a call when the busy party becomes available to receive a call. Two factors commonly prevent a call...
Page 107 Configuring Basic Features Select the desired value from the pull-down list of Call Completion. Click Confirm to accept the change. To configure call completion via phone user interface: Press Menu->Features->Call Completion. Press , or the Switch soft key to select the desired value from the Call Completion field.
Page 108: Anonymous Call
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones User-Agent: Yealink SIP-T28P 2.72.0.1 Privacy: id Supported: replaces Allow-Events: talk,hold,conference,refer,check-sync P-Preferred-Identity: <sip:1012@10.2.1.199> Content-Length: 302 The anonymous call on code and anonymous call off code configured on IP phones are used to activate/deactivate the server-side anonymous call feature. They may vary on different servers.
Page 109 Configuring Basic Features (Optional.) Enter the anonymous call off code in the Off Code field. Click Confirm to accept the change. To configure the anonymous call via phone user interface: Press Menu->Features->Anonymous Call. Press , or the Switch soft key to select the desired line from the Line ID field.
Page 110: Anonymous Call Rejection
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Procedure Anonymous call rejection can be configured using the configuration files or locally. Configure anonymous call rejection. Configuration File <MAC>.cfg For more information, refer to Anonymous Call Rejection page 315. Configure anonymous call rejection.
Page 111: Do Not Disturb
Configuring Basic Features Press , or the Switch soft key to select the desired line from the Line ID field. Press , or the Switch soft key to select the desired value from the Anon Rejection field. (Optional.) Enter the anonymous call rejection on code in the Reject On Code field. (Optional.) Enter the anonymous call rejection off code in the Reject Off Code field.
Page 112 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones mode. Specify the return code and the reason of the SIP response message when DND is enabled. For more information, refer to Not Disturb on page 316. Assign a DND key. Navigate to: http://<phoneIPAddress>/servlet?
Page 113 Configuring Basic Features Click Confirm to accept the change. To configure DND feature via web user interface: Click on Features->Forward & DND. In the DND block, mark the desired radio box in the Mode field. a) If you mark the Phone radio box: 1) Mark the desired radio box in the DND Status field.
Page 114 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 4) (Optional.) Enter the DND off code in the DND Off Code field. Click Confirm to accept the change. To specify the return code and the reason when DND is enabled via web user interface: Click on Features->General Information.
Page 115: Busy Tone Delay
Configuring Basic Features To configure a DND key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys). Select the desired DSS key. Press , or the Switch soft key to select Key Event from the Type field. Press , or the Switch soft key to select DND from the Key Type field.
Page 116: Return Code When Refuse
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 2． Select the desired value from the pull-down list of Busy Tone Delay (Seconds). 3． Click Confirm to accept the change. Return code when refuse defines the return code and reason of the SIP response message for the refused call.
Page 117 Configuring Basic Features http://<phoneIPAddress>/servlet ?p=features-general&q=load To specify the return code and the reason when refusing a call via web user interface: Click on Features->General Information. Select the desired value from the pull-down list of Return Code When Refuse. Click Confirm to accept the change. Early media refers to media (e.g., audio and video) played to the caller before a SIP call is actually established.
Page 118: Ring Workaround
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Procedure 180 ring workaround can be configured using the configuration files or locally. Configure 180 ring workaround. Configuration File <y0000000000xx>.cfg For more information, refer to Ring Workaround on page 320. Configur 180 ring workaround.
Page 119 Configuring Basic Features An outbound proxy server can receive all initiating request messages and route them to the designated destination. If the IP phone is configured to use an outbound proxy server within a dialog, all SIP request messages from the IP phone will be sent to the outbound proxy server forcefully.
Page 120 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired value from the pull-down list of Use Outbound Proxy In Dialog. Click Confirm to accept the change. SIP session timers T1, T2 and T4 are SIP transaction layer timers defined in RFC 3261.
Page 121 Configuring Basic Features To configure session timer via web user interface: Click on Account. Select the desired account from the pull-down list of Account. Click on Advanced. Enter the desired value in the SIP Session Timer T1 (0.5~10s) field. The default value is 0.5s. Enter the desired value in the SIP Session Timer T2 (2~40s) field.
Page 122 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Procedure Session timer can be configured using the configuration files or locally. Configure session timer. Configuration File <MAC>.cfg For more information, refer to Session Timer on page 323. Configure session timer. Navigate to:...
Page 123 Configuring Basic Features Call hold provides a service of placing an active call on hold. When a call is placed on hold, the IP phones send an INVITE request with HOLD SDP to request remote parties to stop sending media and to inform them that they are being held. IP phones support two call hold methods, one is RFC 3264, which sets the “a”...
Page 124 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones basis. Navigate to: http://<phoneIPAddress>/servlet ?p=account-adv&q=load&acc= To configure call hold method via web user interface: Click on Features->General Information. Select the desired value from the pull-down list of RFC 2543 Hold. Click Confirm to accept the change.
Page 125 Configuring Basic Features Enter the desired time in the Play Hold Tone Delay field. Click Confirm to accept the change. To configure MoH via web user interface: Click on Account. Select the desired account from the pull-down list of Account. Click on Advanced.
Page 126 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Click Confirm to accept the change. Call forward allows users to redirect an incoming call to a third party. IP phones redirect an incoming INVITE message by responding with a 302 Moved Temporarily message, which contains a Contact header with a new URI that should be tried.
Page 127 Configuring Basic Features Call Forward on page 326. Configure the call forward mode. Configure call forward in phone mode. Configure <y0000000000xx>.cfg diversion/history-info feature. Configure forward international. For more information, refer to Call Forward on page 326. Configure call forward. Navigate to: http://<phoneIPAddress>/ser vlet?p=features-forward&q=l Configure...
Page 128 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 4) Select the ring time to wait before forwarding from the pull-down list of After Ring Time (0~120s) (only for the no answer forward). b) If you mark the Custom radio box: 1) Select the desired account from the pull-down list of Account.
Page 129 Configuring Basic Features Select the desired value from the pull-down list of Diversion/History-Info. Click Confirm to accept the change. To configure forward international via web user interface: Click on Features->General Information. Select the desired value from the pull-down list of Fwd International. Click Confirm to accept the change.
Page 130 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To configure call forward in phone mode via phone user interface: Press Menu->Features->Call Forward. Press to select the desired forwarding type, and then press the Enter soft key. Depending on your selection:...
Page 131 Configuring Basic Features Always field. 2) Enter the destination number you want to forward all incoming calls to in the Forward To field. 3) (Optional.) Enter the always forward on code and off code respectively in the On Code and Off Code fields. You can also configure the always forward for all accounts.
Page 132 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 3) Press the OK soft key to accept the change. Press the Save soft key to accept the change. Call transfer enables IP phones to transfer an existing call to another party. IP phones...
Page 133 Configuring Basic Features To configure call transfer via web user interface: Click on Features->Transfer. Select the desired values from the pull-down lists of Semi-Attended Transfer, Blind Transfer On Hook and Attended Transfer On Hook. Click Confirm to accept the change. Network conference, also known as centralized conference, provides users with flexibility of call with multiple participants (more than three).
Page 134 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To configure the network conference via web user interface: Click on Account. Select the desired account from the pull-down list of Account. Click on Advanced. Select Network Conference from the pull-down list of Conference Type.
Page 135 Configuring Basic Features Configure the transfer on conference hang up. Local Web User Interface Navigate to: http://<phoneIPAddress>/servlet ?p=features-transfer&q=load To configure Transfer on Conference Hang up via web user interface: Click on Features->Transfer. Select the desired value from the pull-down list of Transfer on Conference Hang up. Click Confirm to accept the change.
Page 136 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Configure directed call pickup feature on a phone basis. For more information, refer to Directed Call Pickup on page 338. Assign a directed call pickup key. <y0000000000xx>.cfg For more information, refer to Directed Call Pickup Key page 421.
Page 137 Configuring Basic Features Select the desired line from the pull-down list of Line. Click Confirm to accept the change. To configure directed call pickup feature on a phone basis via web user interface: Click on Features->Call Pickup. Select the desired value from the pull-down list of Directed Call Pickup (not applicable to SIP-T20P IP phones).
Page 138 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Enter the directed call pickup code in the Directed Call Pickup Code field. Click Confirm to accept the change. To configure a directed pickup key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
Page 139 Configuring Basic Features Procedure Group call pickup can be configured using the configuration files or locally. Configure the group call pickup code on a per-line basis. Configure group call pickup <MAC>.cfg feature on a phone basis. For more information, refer to Configuration File Group Call Pickup on page 339.
Page 140 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired line from the pull-down list of Line. Click Confirm to accept the change. To configure group call pickup feature on a phone basis via web user interface: Click on Features->Call Pickup.
Page 141 Configuring Basic Features Enter the group call pickup code in the Group Call Pickup Code field. Click Confirm to accept the change. To configure a group pickup key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys). Select the desired DSS key. Press , or the Switch soft key to select Key Event from the Type field.
Page 142 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Example of the dialog-info message carried in NOTIFY message: <?xml version="1.0"?> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="6" state="full" entity="sip:1013@10.2.1.199"> <dialog id="706655206@10.2.8.213" call-id="706655206@10.2.8.213" local-tag="827932784" remote-tag="1887460740" direction="recipient"> <state>early</state> <local> <identity>sip:1013@10.2.1.199</identity> <target uri="sip:1013@10.2.1.199"> </target> </local> <remote> <identity>sip:1011@10.2.1.199</identity> <target uri="sip:1011@10.2.8.213:5063">...
Page 143 Configuring Basic Features Select the desired value from the pull-down list of Dialog Info Call Pickup. Click Confirm to accept the change. Call return, also known as last call return, allows users to place a call back to the last caller.
Page 144 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones In the desired DSS key field, select Call Return from the pull-down list of Type. Click Confirm to accept the change. To configure a call return key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
Page 145 Configuring Basic Features Assign a call park key. Navigate to: Web User Interface http://<phoneIPAddress>/servl Local et?p=dsskey&q=load&model= Phone User Interface Assign a call park key. To configure a call park key via web user interface: Click on DSSKey->Memory Key (or Line Key). In the desired DSS key field, select Call Park from the pull-down list of Type.
Page 146 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones incoming call. IP phones support deriving caller identity from three types of SIP header: From, P-Asserted-Identity and Remote-Party-ID. Identity presentation is based on the identity in the relevant SIP header. If the caller has existed in the local directory, the local contact name assigned to the caller should be preferentially displayed and stored in the call log.
Page 147 If the callee has existed in the local directory, the local contact name assigned to the callee should be preferentially displayed. Calling and For more information on connected line identification presentation, refer to Connected Line Identification Presentation on Yealink IP Phones , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. Procedure COLP can be configured only using the configuration files.
Page 148 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Connected Line Identification Presentation on page 342. DTMF (Dual Tone Multi-frequency), better known as touch-tone, is used for telecommunication signaling over analog telephone lines in the voice-frequency band. DTMF is the signal sent from the IP phone to the network, which is generated when pressing the IP phone’s keypad during a call.
Page 149 Configuring Basic Features INBAND DTMF digits are transmitted within the audio of the IP phone conversation. It uses the same codec as your voice and is audible to conversation partners. SIP INFO DTMF digits are transmitted by the SIP INFO messages when the voice stream is established after a successful SIP 200 OK-ACK message sequence.
Page 150 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Click on Advanced. Select the desired value from the pull-down list of DTMF Type. If SIP INFO or AUTO or SIP INFO is selected, select the desired value from the pull-down list of DTMF Info Type.
Page 151 Configuring Basic Features Select the desired value (1-3) from the pull-down list of DTMF Repetition. Click Confirm to accept the change. Suppress DTMF display allows IP phones to suppress the display of DTMF digits. DTMF digits are displayed as “*” on the LCD screen. Suppress DTMF display delay defines whether to display the DTMF digits for a short period of time before displaying as “*”.
Page 152 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To configure suppress DTMF display and suppress DTMF display delay via web user interface: Click on Features->General Information. Select the desired value from the pull-down list of Suppress DTMF Display. Select the desired value from the pull-down list of Suppress DTMF Display Delay (not applicable to SIP-T20P IP phones).
Page 153 Configuring Basic Features To configure transfer via DTMF via web user interface: Click on Features->General Information. Select the desired value from the pull-down list of DTMF Replace Tran. Enter the specified DTMF digits in the Tran Send DTMF field. Click Confirm to accept the change. Intercom allows establishing an audio conversation directly.
Page 154 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Assign an intercom key. Navigate to: Web User Interface http://<phoneIPAddress>/servlet Local ?p=dsskey&q=load&model=0 Phone User Interface Assign an intercom key. To configure an intercom key via web user interface: Click on DSSKey->Memory Key (or Line Key).
Page 155 Configuring Basic Features Intercom Mute Intercom Mute allows the IP phone to mute the microphone for incoming intercom calls. Intercom Tone Intercom Tone allows the IP phone to play a warning tone before answering an intercom call. Intercom Barge Intercom Barge allows the IP phone to automatically answer an incoming intercom call while an active call is in progress.
Page 156 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired values from the pull-down lists of Accept Intercom, Intercom Mute, Intercom Tone and Intercom Barge. Click Confirm to accept the change. To configure intercom via phone user interface: Press Menu->Features->Intercom.
Page 157 Configuring Advanced Features This chapter provides information for making configuration changes for the following advanced features: Distinctive Ring Tones  Tones  Remote Phone Book  LDAP  Busy Lamp Field  Automatic Call Distribution  Message Waiting Indicator  Multicast Paging ...
Page 158 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Alert-Info headers in the following four formats: Alert-Info: 127.0.0.1/Bellcore-drN Alert-Info: ringtone-N (or Alert-Info: MyMelodyN) Alert-Info: <URL> Alert-Info: info=info text;x-line-id=0 If the Alter-Info header contains the keyword “Bellcore-drN”, and the parameter  “features.alert_info_tone” is set to 1, the IP phone will play the Bellcore-drN (N=1, 2, 3, 4 or 5) ring tone.
Page 159 Configuring Advanced Features Minimum Nominal Maximum Bellcore Pattern Pattern Cadence Duration Duration Duration Tone (ms) (ms) (ms) Bellcore-dr5 Ringing Note “Bellcore-dr5” is a ring splash tone that reminds the user that the DND or Always Call Forward feature is enabled on the server side. If the Alter-Info header contains the keyword “ringtone-N”...
Page 160 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Example: Alert-Info: info=family;x-line-id=0 Procedure Distinctive ring tones can be configured using the configuration files or locally. Configure distinctive ring tones. For more information, refer to <MAC>.cfg Distinctive Ring Tones on page 348.
Page 161 Configuring Advanced Features Select the desired value from the pull-down list of Distinctive Ring Tones. Click Confirm to accept the change. To configure the internal ringer text and internal ringer file via web user interface: Click on Settings->Ring. Enter the keywords in the Internal Ringer Text fields. Select the desired ring tones for each text from the pull-down lists of Internal Ringer File.
Page 162 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Click Confirm to accept the change. When receiving a message, the IP phone will play a warning tone. You can customize tones or select specialized tone sets (vary from country to country) to indicate different conditions of the IP phone.
Page 163 Configuring Advanced Features Chile  Czech ETSI  Configured tones can be heard on IP phones for the following conditions. Condition Description Dial When in the pre-dialing interface Ring Back Ring-back tone Busy When the callee is busy Congestion When the network is congested Call Waiting Call waiting tone Dial Recall...
Page 164 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired type from the pull-down list of Select Country. If you select Custom, you can customize a tone for each condition of the IP phone. Click Confirm to accept the change.
Page 165 Configuring Advanced Features outgoing/incoming calls. Specify how often the IP phone refreshes the local cache of the remote phone book. Specify whether to refresh the local cache of the remote phone book at a time when accessing the remote phone book.
Page 166 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Enter the name in the Display Name field. Click Confirm to accept the change To configure Incoming/Outgoing Call lookup and Update Time Interval via web user interface: Click on Directory->Remote Phone Book.
Page 167 Mobile or cellular phone number ipPhone IPphoneNumber Home phone number LDAP Phonebook on Yealink IP Phones For more information on LDAP , refer to , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. Procedure LDAP can be configured using the configuration files or locally.
Page 168 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones For more information, refer to LDAP on page 354. Assign an LDAP key. For more information, refer to LDAP Key on page 428. Configure LDAP . Navigate to: http://<phoneIPAddress>/servl et?p=contacts-LDAP&q=load Web User Interface Assign an LDAP key.
Page 169 Configuring Advanced Features SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP phones only support line keys and programable keys. In the desired DSS key field, select LDAP from the pull-down list of Type. Click Confirm to accept the change. To configure an LDAP key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
Page 170 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones In addition to the BLF key, visual alert for BLF pickup feature enables the supervisor to pick up the monitored user’s incoming call by pressing the Pickup soft key. The directed call pickup code must be configured in advance. For more information on how to...
Page 171 Configuring Advanced Features Line key LED (configured as a BLF key and BLF LED Mode is set to 1) LED Status Description Fast flashing green (200ms) The monitored user receives an incoming call. The monitored user is dialing. Solid green The monitored user is talking.
Page 172 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Memory key LED (configured as a BLF key and BLF LED Mode is set to 2) LED Status Description Fast flashing red (200ms) The monitored user receives an incoming call. The monitored user is dialing.
Page 173 Configuring Advanced Features Procedure BLF can be configured using the configuration files or locally. Specify whether to use visual alert and audio alert for BLF pickup. <MAC>.cfg For more information, refer to on page 360. Configuration File Assign a BLF key. For more information, refer to BLF Key on page 429.
Page 174 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones (Optional.) Enter the directed call pickup code in the Extension field. Click Confirm to accept the change. To configure visual alert and audio alert for BLF pickup via web user interface: Click on Features->Call Pickup.
Page 175 Configuring Advanced Features Select the desired value from the pull-down list of BLF LED Mode. Click Confirm to accept the change. To configure a BLF key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys). Select the desired DSS key. Press , or the Switch soft key to select BLF from the Type field.
Page 176 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones changes the phone status or the ACD auto available timer (if configured) expires. How long the IP phone remains unavailable is configurable by auto-available timer. When the timer expires, the phone status is automatically changed to available. ACD auto available feature depends on support from a SIP server.
Page 177 Configuring Advanced Features In the desired DSS key field, select ACD from the pull-down list of Type. Click Confirm to accept the change. To configure ACD auto available via web user interface: Click on Features->ACD. Select the desired line from the pull-down list of ACD Auto Available. Enter the desired time in ACD Auto Available Timer (0~120s) field.
Page 178 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Message Waiting Indicator (MWI) informs users of the number of messages waiting in their mailbox without calling the mailbox. IP phones support both audio and visual MWI when receiving new voice messages.
Page 179 Configuring Advanced Features Enter the period time in the MWI Subscription Period (Seconds) field. Click Confirm to accept the change. To configure subscribe MWI to voice mail via web user interface: Click on Account. Select the desired account from the pull-down list of Account. Click on Advanced.
Page 180 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Click Confirm to accept the change. Multicast paging allows IP phones to send/receive Real-time Transport Protocol (RTP) streams to/from the pre-configured multicast address(es) without involving SIP signaling. Up to 10 listening multicast addresses can be specified on the IP phone.
Page 181 Configuring Advanced Features To configure a multicast paging key via web user interface: Click on DSSKey->Memory Key (or Line Key). In the desired DSS key field, select Multicast Paging from the pull-down list of Type. Enter the multicast IP address and port number in the Value field. The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
Page 182 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To configure a multicast paging key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys). Select the desired DSS key. Press , or the Switch soft key to select Key Event from the Type field.
Page 183 Configuring Advanced Features address. Configure Paging Barge and Paging Priority Active features. Navigate to: http://<phoneIPAddress>/servlet ?p=contacts-multicastIP&q=load To configure a listening multicast address via web user interface: Click on Directory->Multicast IP. Enter the listening multicast address and port number in the Listening Address field. 1 is the highest priority and 10 is the lowest priority.
Page 184: Call Recording
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired value from the pull-down list of Paging Priority Active. Click Confirm to accept the change. Call recording enables users to record calls. It depends on support from a SIP server.
Page 185: Url Record
Get /phonerecording.cgi?model=yealink HTTP/1.0\r\n Request Method: GET Request URI: /phonerecording.cgi?model=yealink Request version: HTTP/1.0 Host: 10.1.2.224\r\n User-agent: yealink SIP-T28P 2.72.0.1 00:16:65:11:30:68\r\n If the recording is successfully started, the server will respond with a 200 OK message. Example of a 200 OK message: <YealinkIPPhoneText> <Title>...
Page 186 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones <YealinkIPPhoneText> If the recording fails for some reasons, for example, the recording box is full, the server will respond with a 200 OK message. Example of a 200 OK message: <YealinkIPPhoneText> <Title>...
Page 187 Configuring Advanced Features To configure a record key via web user interface: Click on DSSKey->Memory Key (or Line Key). In the desired DSS key field, select Record from the pull-down list of Type. Click Confirm to accept the change. To configure a URL record key via web user interface: Click on DSSKey->Memory Key (or Line Key).
Page 188 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Press the Save soft key to accept the change. To configure a URL record key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys). Select the desired DSS key. Press , or the Switch soft key to select URL Record from the Type field.
Page 189 Configuring Advanced Features In the desired DSS key field, select Hot Desking from the pull-down list of Type. Click Confirm to accept the change. Note You can configure a programable key as a hot desking key on SIP-T19P IP phones only. To configure a hot desking key via phone user interface: Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
Page 190 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Event Description On Hook When the IP phone is on hook. Incoming Call When the IP phone receives an incoming call. Outgoing Call When the IP phone places a call. Established When the IP phone establishes a call.
Page 191 Configuring Advanced Features An HTTP or HTTPS GET request may contain variable name and variable value, separated by “=”. Each variable value starts with $ in the query part of the URL. The valid URL format is: http(s)://IP address of server/help.xml?variable name=$variable. Variable name can be customized by users, while the variable value is pre-defined.
Page 192 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Variable Value Description $call_id The call-id of the active call. Procedure Action URL can be configured using the configuration files or locally. Configure action URL. Configuration File <y0000000000xx>.cfg For more information, refer to Action URL on page 367.
Page 193 Configuring Advanced Features which are separated by “=”. The valid URI format is: http(s)://phone IP address/servlet?key=variable value. The following table lists pre-defined variable values: Variable Value Phone Action Press the OK key (For SIP-T19P , press ENTER Press the Enter soft key (Except for SIP-T20P). SPEAKER Press the Speakerphone key.
Page 194 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Variable Value Phone Action ONHOOK Hang up the handset. ANSWER Answer a call. Reset Reset a phone. Perform a semi-attended/attended transfer to ATrans=xxx xxx. BTrans=xxx Perform a blind transfer to xxx. CALLEND End a call.
Page 195 Configuring Advanced Features Specify the trusted IP address(es) for sending the action URI to the IP phone. Local Web User Interface Navigate to: http://<phoneIPAddress>/servl et?p=features-remotecontrl&q =load To configure the trusted IP address(es) for action URI via web user interface: Click on Features->Remote Control. Enter the IP address or any in the Action URI allow IP List field.
Page 196 Working Server: Server 1 is configured with the domain name of the working server. For example, yealink.pbx.com. DNS mechanism is used such that the working server is resolved to multiple SIP servers for failover purpose. The working server is deployed in redundant pairs, designated as primary and secondary servers.
Page 197: Phone Registration
When registering to the working server, the IP phone must always register to the primary server first except in failover conditions. When the primary server registration is unavailable, the secondary server will serve as the working server. Server Redundancy on Yealink IP For more information on server redundancy, refer to Phones , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
Page 198 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Configure parameters of SIP server 1 and SIP server 2 in the corresponding fields. Click Confirm to accept the change. To configure server redundancy for failover purpose via web user interface: Click on Account->Register.
Page 199 DNS-NAPTR, NAPTR and SRV queries will be tried before falling to A query. If no port is found through the DNS query, 5060 will be used. The following details the procedures of DNS query for the IP phone to resolve the domain name (e.g., yealink.pbx.com) of working server into the IP address, port and transport protocol.
Page 200 SRV query next. TCP will be used, targeted to a host determined by an SRV query of “_sip._tcp.yealink.pbx.com”. If the flag of the NAPTR record returned is empty, the IP phone will perform NAPTR query again according to the previous NAPTR query result.
Page 201 The two records also contain a port “5060”, the IP phone uses this port. If the Target is not a numeric IP address, the IP phone performs an A query. So in this case, the IP phone uses “server1.yealink.pbx.com" and “server2.yealink.pbx.com" for the A query.
Page 202 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones If it is not the last server in the list, the maximum number of retries depends on the configured retry count. Procedure Server redundancy can be configured using the configuration files or locally.
Page 203 Seconds until data unit expires. End of LLDPDU Marks end of LLDPDU. Name assigned to the IP phone. System Name The default value is “yealink”. Description of the IP phone. System Description The default value is “yealink”. The supported and enabled capabilities of the IP phone.
Page 204 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones TLV Type TLV Name Description and DSCP value. Extended Power type, source, priority and value. Power-via-MDI Inventory – Hardware revision of the IP phone. Hardware Revision Inventory – Firmware revision of the IP phone.
Page 205 Configuring Advanced Features To configure LLDP via web user interface: Click on Network->Advanced. In the LLDP block, select the desired value from the pull-down list of Active. Enter the desired time interval in the Packet Interval (1~3600s) field. Click Confirm to accept the change. A dialog box pops up to prompt that settings will take effect after a reboot.
Page 206 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones In addition to manual configuration, the IP phone also supports automatic discovery of VLAN via LLDP or DHCP . The assignment takes effect in this order: assignment via LLDP , manual configuration, then assignment via DHCP .
Page 207 Configuring Advanced Features Select the desired value (0-7) from the pull-down list of Priority. Click Confirm to accept the change. A dialog box pops up to prompt that the settings will take effect after a reboot. Click OK to reboot the IP phone. To configure VLAN for PC port via web user interface: Click on Network->Advanced.
Page 208 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To configure DHCP VLAN discovery via web user interface: Click on Network->Advanced. In the VLAN block, select the desired value from the pull-down list of DHCP VLAN Active. Enter the desired option in the Option field.
Page 209 200KB. The related VPN files are: certificates (ca.crt and client.crt), key (client.key) and the configuration file (vpn.cnf) of the VPN client. For more OpenVPN Feature on Yealink IP information on how to package a TAR file, refer to...
Page 210 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones et?p=network-adv&q=load Phone User Interface Configure VPN feature. To upload a TAR file and configure VPN via web user interface: Click on Network->Advanced. Click Browse to locate the TAR file from the local system.
Page 211: Quality Of Service
Configuring Advanced Features time. Quality of Service (QoS) is the ability to provide different priorities for different packets in the network, allowing the transport of traffic with special requirements. QoS guarantees are important for applications that require fixed bit rate and are delay sensitive when the network capacity is insufficient.
Page 212: Voice Qos
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones VoIP is extremely bandwidth- and delay-sensitive. QoS is a major issue in VoIP implementations, regarding how to guarantee that packet traffic not be delayed or dropped due to interference from other lower priority traffic. VoIP can guarantee high-quality QoS only if the voice and the SIP packets are given priority over other kinds of network traffic.
Page 213: Network Address Translation
Configuring Advanced Features Enter the desired value in the SIP QoS (0~63) field. Click Confirm to accept the change. A dialog box pops up to prompt that settings will take effect after a reboot. Click OK to reboot the IP phone. Network Address Translation (NAT) is essentially a translation table that maps public IP address and port combinations to private ones.
Page 214 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones assistance from a third-party network server (STUN server) usually located on public Internet. The IP phone can be configured to act as a STUN client, to send exploratory STUN messages to the STUN server. The STUN server uses those messages to determine the public IP address and port used, and then informs the client.
Page 215 IP phone is allowed to access resources located on the protected side of the network. IP phones support protocols EAP-MD5, EAP-TLS, PEAP-MSCHAPv2 and EAP-TTLS/EAP-MSCHAPv2 for 802.1X authentication. Yealink 802.1X Authentication For more information on 802.1X authentication, refer to available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
Page 216 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 2) Enter the password for authentication in the MD5 Password field. b) If you select EAP-TLS: 1) Enter the user name for authentication in the Identity field. 2) Leave the MD5 Password field blank.
Page 217 Configuring Advanced Features 5) Click Upload to upload the certificates. c) If you select PEAP-MSCHAPv2: 1) Enter the user name for authentication in the Identity field. 2) Enter the password for authentication in the MD5 Password field. 3) In the CA Certificates field, click Browse to select the desired CA certificate (*.pem, *.crt, *.cer or *.der) from your local system.
Page 218 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 4) Click Upload to upload the certificate. d) If you select EAP-TTLS/EAP-MSCHAPv2: 1) Enter the user name for authentication in the Identity field. 2) Enter the password for authentication in the MD5 Password field.
Page 219 Configuring Advanced Features 4) Click Upload to upload the certificate. Click Confirm to accept the change. A dialog box pops up to prompt that settings will take effect after a reboot. Click OK to reboot the IP phone. To configure the 802.1X authentication via phone user interface after: Press Menu->Settings->Advanced Settings (password: admin) ->Network->802.1x Settings.
Page 220 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 2) Enter the password for authentication in the MD5 Password field. Click Save to accept the change. The IP phone reboots automatically to make the settings effective after a period of time.
Page 221 AddObject object defined on the CPE. This method is used to remove a particular instance DeleteObject of an object. Yealink TR-069 Technote For more information on TR-069, refer to , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. Procedure TR-069 can be configured using the configuration files or locally.
Page 222 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select Enabled from the pull-down list of Enable TR069. Enter the user name and password authenticated by the ACS in the ACS Username and ACS Password fields. Enter the URL of the ACS in the ACS URL field.
Page 223 Configuring Advanced Features network administrator and sends out Router Advertisement announcements onto the link. These announcements can allow the on-link connected IP phone to configure itself with IPv6 address, as specified in RFC 4862. Procedure IPv6 can be configured using the configuration files or locally. Configure the IPv6 address assignment method.
Page 224 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones In the IPv6 Config block, do one of the following. If you mark the Static IP Address radio box, configure the IPv6 address and other configuration parameters in the corresponding fields.
Page 225 Configuring Advanced Features (Optional.) If you mark the DHCP radio box, you can configure the static DNS address in the corresponding fields. Click Confirm to accept the change. A dialog box pops up to prompt that the settings will take effect after a reboot. Click OK to reboot the IP phone.
Page 226 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones...
Page 227: Configuring Audio Features
Configuring Audio Features This chapter provides information for making configuration changes for the following audio features: Headset Prior  Dual Headset  Audio Codecs  Acoustic Clarity Technology  Headset prior allows users to use headset preferentially if a headset is physically connected to the IP phone.
Page 228 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired value from the pull-down list of Headset Prior. Click Confirm to accept the change. Dual headset allows users to use two headsets on one IP phone. To use this feature, users need to physically connect two headsets to the headset and handset jacks respectively.
Page 229 Configuring Audio Features Select the desired value from the pull-down list of Dual-Headset. Click Confirm to accept the change. CODEC is an abbreviation of COmpress-DECompress, capable of coding or decoding a digital data stream or signal by implementing an algorithm. The object of the algorithm is to represent the high-fidelity audio signal with minimum number of bits while retaining the quality.
Page 230 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The corresponding attributes of the codec are listed as follows: Codec Configuration Methods Priority RTPmap Configuration Files PCMU Web User Interface Configuration Files PCMA Web User Interface Configuration Files G729 Web User Interface...
Page 231 Configuring Audio Features Procedure Configuration changes can be performed using the configuration files or locally. Configure the codecs to use on a per-line basis. Configure the priority and rtpmap for the enabled codec. Configuration File <MAC>.cfg For more information, refer to Audio Codecs on page 391.
Page 232 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones To adjust the priority of codecs, select the desired codec and then click Click Confirm to accept the change. To configure the ptime on a per-line basis via web user interface: Click on Account.
Page 233: Acoustic Echo Cancellation
Configuring Audio Features Acoustic Echo Cancellation (AEC) is used to remove acoustic echo from a voice communication in order to improve the voice quality. It also increases the capacity achieved through silence suppression by preventing echo from traveling across a network.
Page 234: Voice Activity Detection
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired value from the pull-down list of ECHO. Click Confirm to accept the change. Voice Activity Detection (VAD) is used in speech processing to detect the presence or absence of human speech. When detecting period of “silence”, VAD replaces that silence efficiently with special packets that indicate silence is occurring.
Page 235: Comfort Noise Generation
Configuring Audio Features Select the desired value from the pull-down list of VAD. Click Confirm to accept the change. Comfort Noise Generation (CNG) is used to generate background noise for voice communications during periods of silence in a conversation. It is a part of the silence suppression or VAD handling for VoIP technology.
Page 236: Jitter Buffer
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired value from the pull-down list of CNG. Click Confirm to accept the change. Jitter buffer is a shared data area where voice packets can be collected, stored, and sent to the voice processor in even intervals. Jitter is a term indicating variations in packet arrival time, which can occur because of network congestion, timing drift or route changes.
Page 237 Configuring Audio Features et?p=settings-voice&q=load To configure Jitter Buffer via web user interface: Click on Settings->Voice. Mark the desired radio box in the Type field. Enter the minimum delay time for adaptive jitter buffer in the Min Delay field. Valid values range from 0 to 300. Enter the maximum delay time for adaptive jitter buffer in the Max Delay field.
Page 238 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones...
Page 239: Configuring Security Features
Configuring Security Features This chapter provides information for making configuration changes for the following security-related features: Transport Layer Security  Secure Real-Time Transport Protocol  Encrypting Configuration Files  TLS is a commonly-used protocol for providing communications privacy and managing the security of message transmission, allowing IP phones to communicate with other remote parties and connect to the HTTPS URL for provisioning in a way that is designed to prevent eavesdropping and tampering.
Page 240 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones AES256-SHA  EDH-RSA-DES-CBC3-SHA  EDH-DSS-DES-CBC3-SHA  DES-CBC3-SHA  DHE-RSA-AES128-SHA  DHE-DSS-AES128-SHA  AES128-SHA  IDEA-CBC-SHA  DHE-DSS-RC4-SHA  RC4-SHA  RC4-MD5  EXP1024-DHE-DSS-DES-CBC-SHA  EXP1024-DES-CBC-SHA  EDH-RSA-DES-CBC-SHA  EDH-DSS-DES-CBC-SHA  DES-CBC-SHA ...
Page 241 A unique server certificate: It is unique to an IP phone (based on the MAC address) and issued by the Yealink Certificate Authority (CA). A generic server certificate: It issued by the Yealink Certificate Authority (CA). Only if no unique certificate exists, the IP phone may send a generic certificate for authentication.
Page 242 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Common Name Validation feature enables the IP phone to mandatorily validate the common name of the certificate sent by the connecting server. In TLS feature, we use the terms trusted and server certificate. These are also known as Note CA and device certificates.
Page 243 Configuring Security Features Upload the trusted certificates. Navigate to: http://<phoneIPAddress>/servl et?p=trusted-cert&q=load Configure server certificates feature. Upload the server certificates. Navigate to: http://<phoneIPAddress>/servl et?p=server-cert&q=load To configure TLS on a per-line basis via web user interface: Click on Account->Register. Select the desired account from the pull-down list of Account. Select TLS from the pull-down list of Transport.
Page 244 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Select the desired values from the pull-down lists of Only Accept Trusted Certificates, Common Name Validation and CA Certificates. Click Confirm to accept the change. To upload a trusted certificate via web user interface: Click on Security->Trusted Certificates.
Page 245 Configuring Security Features Select the desired value from the pull-down list of Device Certificates. Click Confirm to accept the change. To upload a server certificate via web user interface: Click on Security->Server Certificates. Click Browse to select the certificate (*.pem and *.cer) from your local system. Click Upload to upload the certificate.
Page 246 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:NzkyM2FjNzQ2ZDgxYjg0MzQwMGVmMGUxMzdmNWFm a=crypto:3 F8_128_HMAC_SHA1_80 inline:NDliMWIzZGE1ZTAwZjA5ZGFhNjQ5YmEANTMzYzA0 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=rtpmap:9 G722/8000 a=fmtp:101 0-15 a=rtpmap:101 telephone-event/8000 a=ptime:20 a=sendrecv The callee receives the INVITE message with the RTP encryption algorithm, and then answers the call by responding with a 200 OK message which carries the negotiated RTP encryption algorithm.
Page 247 Configuring Security Features n File server_ce <y00000000 rtificates.u 00xx>.cfg Configures the access URL of the certificate the IP phone sends for authenticati Descriptio Note: The certificate you want to upload must be in *.pem or *.cer format. Format Default Blank Value String Range...
Page 248 This tool generates another new file named as Aeskey.txt to store the plaintext 16-character symmetric keys for each configuration file. For a Microsoft Windows platform, you can use a Yealink-supplied encryption tool "Config_Encrypt_Tool.exe" to encrypt the <y0000000000xx>.cfg and <MAC>.cfg files...
Page 249: Procedure To Encrypt Configuration Files
Configuring Security Features respectively. Note Yealink also supplies a configuration encryption tool (yealinkencrypt) for Linux platform if Yealink Configuration Encryption Tool User Guide required. For more information, refer to available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. For security reasons, administrator should upload encrypted configuration files, <y0000000000xx_Security>.enc and/or <MAC_Security>.enc files to the root directory...
Page 250 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The tool uses the file folder “Encrypted” as the target directory by default. (Optional.) Mark the desired radio box in the AES Model field. If you mark the Manual radio box, you can enter an AES key in the AES KEY field or click Re-Generate to generate an AES key in the AES KEY field.
Page 251 Configuring Security Features The target directory will be automatically opened. You can find the encrypted CFG file(s), encrypted key file(s) and an Aeskey.txt file storing plaintext AES key(s). Procedure Decryption method can be configured using the configuration files. Configure the decryption method.
Page 252 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Enter the values in the Common AES Key and MAC-Oriented AES Key fields. AES keys must be 16 characters and the supported characters contain: 0-9, A-Z, a-z. Click Confirm to accept the change.
Page 253 Configuring Security Features...
Page 254 IP phones. The resources files can be local contact directory, remote phone book and so on. Ask Yealink field application engineer for resource file templates. If the resource file is to be used for all IP phones of the same model, the resource file access URL is best specified in the <y0000000000xx>.cfg file.
Page 255: Resource Files
Resource Files Procedure Use the following procedures to customize a replace rule template. To customize a replace rule template: Open the template file using an ASCII editor. Add the following string to the template, each starting on a separate line: <Data Prefix=""...
Page 256 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones in the section Dial Plan on page 67. Procedure Use the following procedures to customize a dial-now template. To customize a dial-now template: Open the template file using an ASCII editor. Add the following string to the template, each starting on a separate line: <Data DialNowRule=""...
Page 257 Resource Files <Default> indicates the start of the default soft key list and </Default> indicates  the end of the default soft key list. The default soft keys are displayed on the LCD screen by default. Procedure Use the following procedures to customize a softkey layout template. To customize a softkey layout template: Open the template file using an ASCII editor.
Page 258 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Directory provides easy access to frequently used lists. Users can access lists by pressing the Directory soft key when the IP phone is idle. The lists may contain Local Directory, History, Remote Phone Book (not applicable to SIP-T20P IP phones) and LDAP (not applicable to SIP-T19P and SIP-T20P IP phones).
Page 259 Resource Files The following shows an example of a directory template: <root_favorite_set> <item id_name="localdirectory" display_name="Local Directory" priority="1" enable="1" /> <item id_name="history" display_name="History" priority="2" enable="0" /> <item id_name="remotedirectory" display_name="Remote Phone Book" priority="3" enable="0" /> <item id_name="ldap" display_name="LDAP" priority="4" enable="0" /> </root_favorite_set> Search source list in dialing allows the IP phone to search for entries from the desired lists based on the entered string when in the pre-dialing screen, and then the user can select the desired entry to dial out quickly.
Page 260 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Where: id_name="" specifies the directory list (“local_directory_search” for the local directory list). Do not edit this field. display_name="" specifies the display name of the directory list. We do not recommend editing this field.
Page 261 Resource Files Procedure Use the following procedures to customize a local contact template file. To customize a local contact file: Open the template file using an ASCII editor. For each group that you want to add, add the following string to the file. Each starts on a separate line: <group display_name=""...
Page 262 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones group_id_name="Friend"/> </root_contact> Note Yealink IP phones support both *.xml and *.csv formats. IP phones can access 5 remote phone books. You can customize the remote XML phone book for IP phones as required. Before specifying the access URL of the remote phone book in the configuration files, you need to create a remote XML phone book and then place it to the provisioning server.
Page 263: Replace Rule Template
<Name>Marry</Name> <Telephone>1005</Telephone> </DirectoryEntry> </YealinkIPPhoneDirectory> Note Yealink supplies a phonebook generation tool to generate a remote XML phone book. Yealink Phonebook Generation Tool User Guide For more information, refer to , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. Access URL of the resource file can be configured using the configuration files: Configure the access URL of the replace rule template.
Page 264 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones For more information, refer to Access URL of Remote XML Phone Book on page 408. Configure the access URL of the directory template. Configuration File <y0000000000xx>.cfg For more information, refer to Access URL of Directory Template on page 407.
Page 265 Resource Files...
Page 266: Troubleshooting
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones This chapter provides an administrator with general information for troubleshooting some common problems that he (or she) may encounter while using IP phones. IP phones can provide feedback in a variety of forms such as log files, packets, status indicators and so on, which can help an administrator more easily find the system problem and fix it.
Page 267 Troubleshooting 5: normal but significant condition 6: informational For more information on the system log setting parameters, refer to Log Settings page 409. To configure the level of the system log via web user interface: Click on Settings->Configuration. Select the desired level from the pull-down list of System Log Level. Click Confirm to accept the change.
Page 268 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Enter the IP address or domain name of the syslog server in the Server Name field. Click Confirm to accept the change. A dialog box pops up to prompt “Do you want to restart your machine?”. The configuration will take effect after a reboot.
Page 269 Troubleshooting The following figure shows a portion of a log file- an account registration: You can capture packet in two ways: capturing the packet via web user interface or using the Ethernet software. You can analyze the packet captured for troubleshooting purpose.
Page 270 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Click Export to open the file download window, and then save the file to your local system. To capture packets using the Ethernet software: Connect the Internet port of the IP phone and the PC to the same HUB, and then use Sniffer, Ethereal or Wireshark software to capture the signal traffic.
Page 271 Troubleshooting Select the desired value from the pull-down list of Watch Dog. Click Confirm to accept the change. Status indicators may consist of the power LED, MESSAGE key LED, line key indicator, headset key indicator and the on-screen icon. The following shows two examples of obtaining the phone information from status indicators: If a LINK failure of the IP phone is detected, a prompting message “Network ...
Page 272 This section describes solutions to common issues that may occur while using the IP phone. Upon encountering a scenario not listed in this section, contact your Yealink reseller for further support.
Page 273 Troubleshooting “ ” The LCD screen prompts “No Service” message when there is no available SIP account on the IP phone. Do one of the following: Ensure that an account is actively registered on the IP phone at the path ...
Page 274 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones jitter, due to message recombination of transmission or receiving equipment (e.g., timeout handling, retransmission mechanism, buffer under run). Noisy equipment, such as a computer or a fan, may cause voice interference. Turn ...
Page 275 DOB format are available. For more information, refer to Yealink_SIP-T2_Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide , available online: http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142. Press the volume key to increase or decrease the ringer volume when the phone is idle, or to adjust the volume of engaged audio device (handset, speakerphone or headset) when there is an active call in progress.
Page 276 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones ’ Do one of the following: Ensure that the configuration is set correctly.  Reboot the IP phone. Some configurations require a reboot to take effect.  Ensure that the configuration is applicable to the IP phone model.
Page 277 Troubleshooting Click Reset to Factory Reset in the Reset to Factory Setting field. The web user interface prompts the message “Do you want to reset to factory?”. Click OK to confirm the resetting. The phone will be reset to factory sucessfully after startup. Note Reset of your phone may take a few minutes.
Page 278 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Logo Line Memory Phone Model Browser Display 132*64 132*64 SIP-T21P Support Support pixel pixel 3-line (2*15 characte Support SIP-T20P Text log rs and (Non UI) an icon line) 132*64 132*64 SIP-T19P Support...
Page 279 Troubleshooting...
Page 280 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 802.1x--an IEEE Standard for port-based Network Access Control (PNAC). It is a part of the IEEE 802.1 group of networking protocols. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN.
Page 281 Appendix IEEE (Institute of Electrical and Electronics Engineers)--a non-profit professional association headquartered in New York City that is dedicated to advancing technological innovation and excellence. LAN (Local Area Network)--used to interconnects network devices in a limited area such as a home, school, computer laboratory, or office building. MIB (Management Information Base)--a virtual database used for managing the entities in a communications network.
Page 282 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Time Zone Time Zone Name −11:00 Samoa −10:00 United States-Hawaii-Aleutian −10:00 United States-Alaska-Aleutian −09:00 United States-Alaska Time −08:00 Canada(Vancouver, Whitehorse) −08:00 Mexico(Tijuana, Mexicali) −08:00 United States-Pacific Time −07:00 Canada(Edmonton, Calgary) −07:00 Mexico(Mazatlan, Chihuahua) −07:00...
Page 283 Appendix Time Zone Time Zone Name United Kingdom(London) Morocco +01:00 Albania(Tirane) +01:00 Austria(Vienna) +01:00 Belgium(Brussels) +01:00 Caicos +01:00 Chad +01:00 Spain(Madrid) +01:00 Croatia(Zagreb) +01:00 Czech Republic(Prague) +01:00 Denmark(Kopenhagen) +01:00 France(Paris) +01:00 Germany(Berlin) +01:00 Hungary(Budapest) +01:00 Italy(Rome) +01:00 Luxembourg(Luxembourg) +01:00 Macedonia(Skopje) +01:00 Netherlands(Amsterdam) +01:00...
Page 284 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Time Zone Time Zone Name +04:30 Afghanistan +05:00 Kazakhstan(Aqtobe) +05:00 Kyrgyzstan(Bishkek) +05:00 Pakistan(Islamabad) +05:00 Russia(Chelyabinsk) +05:30 India(Calcutta) +06:00 Kazakhstan(Astana, Almaty) +06:00 Russia(Novosibirsk, Omsk) +07:00 Russia(Krasnoyarsk) +07:00 Thailand(Bangkok) +08:00 China(Beijing) +08:00 Singapore(Singapore) +08:00...
Page 285  Note Yealink endeavors to maintain a built-in list of most common used CA Certificates. Due to memory constraints, we cannot ensure a complete set of certificates. If you are using a certificate from a commercial Certificate Authority not in the list above, you can send a request to your local distributor.
Page 286 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones You can set parameters in the configuration files to configure IP phones. The <y0000000000xx>.cfg and <MAC>.cfg files are stored on the provisioning server. The IP phone checks for configuration files and looks for resource files when restarting the IP phone.
Page 287 Appendix Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example network.static_dns_enable= 0 Parameter- Configuration File network.internet_port.type <MAC>.cfg Configures the Internet port type. Note: If you change this parameter, the IP Description phone will reboot to make the change take effect.
Page 288 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 1-IPv6 2-IPv4&IPv6 Example network.ip_address_mode = 0 Parameter- Configuration File network.internet_port.ip <MAC>.cfg Configures the IP address when the Internet port type is configured as Static IP Address and the IP address mode is configured as IPv4 or IPv4&IPv6.
Page 289 Appendix Address and the IP address mode is configured as IPv4 or IPv4&IPv6. Note: If you change this parameter, the IP phone will reboot to make the change take effect. Format IPv4 Address Default Value Blank Range Not Applicable network.internet_port.gateway = Example 192.168.1.254 Parameter-...
Page 290 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Range Not Applicable Example network.secondary_dns = 202.101.103.54 Parameter- Configuration File network.internet_port.type <MAC>.cfg Configures the Internet port type. Note: If you change this parameter, the IP Description phone will reboot to make the change take effect.
Page 291 Appendix Parameter- Configuration File network.pppoe.password <y0000000000xx>.cfg Configures the PPPoE password when the Internet port type is configured as PPPoE and the IP address mode is configured as IPv4 or IPv4&IPv6. Description Note: If you change this parameter, the IP phone will reboot to make the change take effect.
Page 292 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones PC Port Transmission Method Parameter- Configuration File network.pc_port.speed_duplex <y0000000000xx>.cfg Configures the transmission method of PC port. Note: We recommend that you do not change Description this parameter. If you change this parameter, the IP phone will reboot to make the change take effect.
Page 293 Appendix Note: If you change this parameter, the IP phone will reboot to make the change take effect. It is not applicable to SIP-T19P and SIP-T21P IP phones. SIP-T19P and SIP-T21P IP phones only support bridge mode for PC connection. Format Integer Default Value...
Page 294 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Example network.pc_port.mask = 255.255.255.0 Parameter- Configuration File network.pc_port.dhcp_server <y0000000000xx>.cfg Enables or disables the DHCP service for the PC attached to the PC port when the PC port is configured as Router. Description...
Page 295 Appendix port when the PC port is configured as Router. Note: If you change this parameter, the IP phone will reboot to make the change take effect. It is not applicable to SIP-T19P and SIP-T21P IP phones. Format IP Address Default Value 10.0.0.100 Range...
Page 296 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File auto_provision.repeat.enable < y0000000000xx >.cfg Enables or disables the IP phone to check Description new configuration repeatedly. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example auto_provision.repeat.enable =0...
Page 297 Appendix Parameter- Configuration File auto_provision.weekly.begin_tim < y0000000000xx >.cfg Configures the begin time of the day for the IP phone to check new configuration weekly. Description Note: It works only if the parameter “auto_provision.weekly.enable” is set to 1(Enabled). Format Time Default Value 00:00 Range 00:00 to 23:59...
Page 298 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 3-Wednesday 4-Thursday 5-Friday 6-Saturday auto_provision.weekly.dayofweek = Example 0123456 Parameter- Configuration File phone_setting.common_power_l <y0000000000xx>.cfg ed_enable Enables or disables the power indicator LED Description to be turned on. Format Boolean Default Value Valid values are:...
Page 299 Appendix 0-Disabled (power indicator LED does not flash) 1-Enabled (power indicator LED fast flashes (300ms) green) phone_setting.ring_power_led_flash_enable Example Parameter- Configuration File phone_setting.mail_power_led_fl <y0000000000xx>.cfg ash_enable Enables or disables the power indicator LED to flash when the phone receives a voice mail or a text message. If it is set to 0, the status of the power Description indicator LED is determined by the value of...
Page 300 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format Boolean Default Value Valid values are: 0-Disabled (power indicator LED does not Range flash) 1-Enabled (power indicator LED fast flashes (300ms) green) phone_setting.mute_power_led_flash_enabl Example e = 1 Parameter- Configuration File phone_setting.hold_and_held_p <y0000000000xx>.cfg...
Page 301 Appendix the parameter “phone_setting.common_power_led_enable ”. Format Boolean Default Value Valid values are: 0-Disabled (power indicator LED is off) Range 1-Enabled ( power indicator LED is solid green) phone_setting.talk_and_dial_power_led_en Example able = 1 Parameter- Configuration File phone_setting.contrast <y0000000000xx>.cfg Configures the contrast of the LCD screen. For SIP-T28P IP phones, it configures the LCD’s contrast of the IP phone and the connected EXP39.
Page 302 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File phone_setting.active_backlight_l <y0000000000xx>.cfg evel Configures the backlight idle intensity used to adjust the backlight intensity of the LCD screen Description Level 3 is the brightest. Note: It is only applicable to SIP-T28P IP phones and the connected EXP39.
Page 303 Appendix Example phone_setting.backlight_time = 30 Parameter- Configuration File wui.http_enable <y0000000000xx>.cfg Enables or disables the IP phone to access its web user interface using HTTP protocol. Description Note: If you change this parameter, the IP phone will reboot to make the change take effect.
Page 304 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Note: If you change this parameter, the IP phone will reboot to make the change take effect. Format Boolean Default Value Valid values are: 0-Disabled Range 1-Enabled Example wui.https_enable = 1 Parameter- Configuration File network.port.https...
Page 305 Appendix Range String within 32 characters Example security.user_password = user:password123 Parameter- Configuration File security.user_password <y0000000000xx>.cfg Configures the password of the administrator for web server access. The IP phone uses “admin” as the default Description administrator password. Note: IP phones support ASCII characters 32-126(0x20-0x7E) in passwords.
Page 306 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones numbers, reject incoming calls by pressing the X key, answer incoming calls by lifting the handset, pressing the Speakerphone key, the HEADSET key or the OK key, place an active call on hold by pressing the Hold soft key or...
Page 307 Appendix _time_out Configures the IP phone to automatically lock the keypad after a delay time (in seconds). If it is set to 0 (0s), the keypad will not be Description locked automatically. In this case, you need to long press the pound key to lock the keypad. Note: This parameter works only if the IP phone lock type is preset.
Page 308 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 0-Disabled (use the NTP server obtained by DHCP preferentially) 1-Enabled Example local_time.manual_ntp_srv_prior = 0 Parameter- Configuration File local_time.ntp_server1 <MAC>.cfg Configures the IP address or the domain name Description of the primary NTP server.
Page 309 Appendix Example local_time.interval = 1000 Time Zone Parameter- Configuration File local_time.time_zone <MAC>.cfg Configures the time zone. Description For more available time zones, refer to Appendix B: Time Zones on page 266. Format String Default Value Range -11 to +13 Example local_time.time_zone = +8 Parameter- Configuration File...
Page 310 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File local_time.dst_time_type <MAC>.cfg Configures the DST type. Note: It works only if the parameter Description “local_time.summer_time” is set to 1 (Enabled). Format Integer Default Value Valid values are: Range 0-By Date...
Page 311 Appendix 1to 12/1 to 31/0 to 23 (for By Date) Range 1 to 12/1 to 5/1 to 7/0 to 23 (for By Week) Example local_time.start_time = 1/1/0 Parameter- Configuration File local_time.end_time <MAC>.cfg Configures the time to end DST. If “local_time.dst_time_type” is set to 0 (By Date), use the mapping: MM: 1=Jan, 2=Feb,…, 12=Dec DD:1=the first day in a month,…, 31= the last...
Page 312 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Note: It is only available to offset from GMT 0. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example local_time.dhcp_time = 0 Parameter- Configuration File local_time.offset_time <MAC>.cfg Description Configures the offset time (in minutes).
Page 313 Appendix IP phones support various date formats. You can change the desired format according to your requirement. Format Integer Default Value Note: For SIP-T20P IP phones, the default value is 7. For SIP-T28P/T26P/T21P/T22P/T19P IP phones: Valid values are: 0-WWW MMM DD 1-DD-MMM-YY 2-YYYY-MM-DD 3-DD/MM/YYYY...
Page 314 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format Default Value Blank Range String within 511 characters The following example uses HTTP to download the language pack “lang+English.txt” from the provisioning Example server 192.168.10.25. gui_lang.url = http://192.168.10.25/lang+English.txt Parameter- Configuration File lang.gui...
Page 315 Appendix user interface depends on the language preferences of your browser. If the language of your browser is not supported by the IP phone, the web user interface will use English by default. Format String Default Value Blank Valid values are: English Chinese_S (only applicable to SIP-T19P and SIP-T21P IP phones)
Page 316 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones If it is set to 1 (Enabled), the LCD screen will display the custom text logo. Format Integer Default Value Note: For SIP-T28 IP phones, the default value is Valid values are:...
Page 317 Appendix Range String within 15 characters Example phone_setting.lcd_logo.text = Yealink Parameter- Configuration File features.key_as_send <y0000000000xx>.cfg Configures the "#" or "*" key as the send key. If it is set to 0 (Disabled), neither “#” nor “*” can be used as a send key.
Page 318 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File features.send_key_tone <y0000000000xx>.cfg Enables or disables the IP phone to play a tone when a user presses a send key. If it is set to 1 (Enabled), the IP phone will play Description a tone when a user presses a send key.
Page 319 Appendix Range String within 32 characters Example dialplan.replace.replace.1 = 1 Parameter- Configuration File dialplan.replace.line_id.X <y0000000000xx>.cfg Configures the desired line to apply this replace rule. The digit 0 stands for all lines. X ranges from 1 to 100. Description Note: Multiple line IDs are separated by commas.
Page 320 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File dialplan.dialnow.line_id.X <y0000000000xx>.cfg Configures the desired line to apply this dial-now rule. The digit 0 stands for all lines. X ranges from 1 to 100. Description Note: Multiple line IDs are separated by commas.
Page 321 Appendix Range String within 16 characters Example dialplan.area_code.code = 010 Parameter- Configuration File dialplan.area_code.min_len <y0000000000xx>.cfg Configures the minimum length of the entered Description numbers. Integer Format Default Value Range 1 to 15 Example dialplan.area_code.min_len = 1 Parameter- Configuration File dialplan.area_code.max_len <y0000000000xx>.cfg Configures the maximum length of the entered numbers.
Page 322 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 0 to 2 (for SIP-T21P/T20P) Example dialplan.area_code.line_id = 1,2 Block Out Parameter- Configuration File dialplan.block_out.number.X <y0000000000xx>.cfg Configures the block out numbers. Description X ranges from 1 to 10. Format String Default Value...
Page 323 Appendix handset, pressing the speakerphone key or the line key. Leaving it blank disables hotline feature. Format String Default Value Blank Range String within 32 characters Example features.hotline_number = 3601 Parameter- Configuration File features.hotline_delay <y0000000000xx>.cfg Configures the waiting time (in seconds) the IP phone automatically dials out the hotline number.
Page 324 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example features.save_call_history = 1 Parameter- Configuration File account.X.missed_calllog <MAC>.cfg Enables or disables missed call log feature for account X. If it is set to 0 (Disabled), there is no indicator...
Page 325 Appendix number without having to press any key. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example phone_setting.predial_autodial = 1 Parameter- Configuration File phone_setting.inter_digit_time <y0000000000xx>.cfg Configures the time (in seconds) for the phone to automatically dial out the entered digits without pressing any other key.
Page 326 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 1-Enabled Example call_waiting.enable = 1 Parameter- Configuration File call_waiting.tone <y0000000000xx>.cfg Enables or disables the playing of a call waiting tone when the IP phone receives an incoming call during a call. If it is set to 1 (Enabled), the IP phone will...
Page 327 Appendix Range String within 32 characters Example call_waiting.off_code = *73 Parameter- Configuration File auto_redial.enable <y0000000000xx>.cfg Enables or disables the IP phone to automatically redial the called number when it is busy. Description If it is set to 1 (Enabled), the IP phone will dial the previous dialed out number automatically when the dialed number is busy.
Page 328 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The IP phone tries to redial the dialed number as many times as configured till the callee answers the call. Format Integer Default Value Range 1 to 300 Example auto_redial.times = 10...
Page 329 Appendix Example features.auto_answer_delay = 1 Parameter- Configuration File features.call_completion_enable <y0000000000xx>.cfg Enables or disables call completion feature. If a user places a call and the callee is temporarily not available to answer the call, call completion feature allows notifying the Description user when the callee becomes available to receive a call.
Page 330 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Valid values are: Range 0-Disabled 1-Enabled Example account.1.anonymous_call = 1 Parameter- Configuration File account.X.send_anonymous_co <MAC>.cfg Configures the phone to send anonymous on/off code to activate/deactivate the server-side anonymous call feature for account X.
Page 331 Appendix Default Value Blank Range String within 32 characters Example account.1.anonymous_call_oncode = *72 Parameter- Configuration File account.X.anonymous_call_off <MAC>.cfg code Configures the anonymous call off code to deactivate the server-side anonymous call feature for account X. Description X ranges from 1 to 6. Note: It works only if the parameter “account.X.send_anonymous_code”...
Page 332 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 1-Enabled Example account.1.reject_anonymous_call = 1 Parameter- Configuration File account.X.anonymous_reject_o <MAC>.cfg ncode Configures the anonymous call rejection on code to activate the server-side anonymous Description call rejection feature for account X. X ranges from 1 to 6.
Page 333 Appendix displayed on the caller’s phone LCD screen. If it is set to 486 (Busy here), the caller’s phone LCD screen will display the reason “Busy here” when the callee enables DND feature. Format Integer Default Value Valid values are: 404-No Found Range 480-Temporarily not available...
Page 334 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Valid values are: Range 0-Disabled 1-Enabled Example features.dnd.enable = 1 Parameter- Configuration File features.dnd.on_code <y0000000000xx>.cfg Configures the DND on code to activate the Description server-side DND feature. Format String Default Value Blank...
Page 335 Appendix 1-Enabled Example account.1.dnd.enable = 1 Parameter- Configuration File account.X.dnd.on_code <MAC>.cfg Configures the DND on code to activate the server-side DND feature for account X. Description X ranges from 1 to 6. Format String Default Value Blank Range String within 32 characters Example account.1.dnd.on_code = *73 Parameter-...
Page 336 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Default Value Valid values are: 0-0s Range 3-3s 5-5s Example features.busy_tone_delay = 0 Parameter- Configuration File features.normal_refuse_code <y0000000000xx>.cfg Configures a return code and reason of SIP response messages when the phone rejects an incoming call.
Page 337 Appendix Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example phone_setting.is_deal180 = 1 Parameter- Configuration File sip.use_out_bound_in_dialog <y0000000000xx>.cfg Enables or disables the IP phone to send the SIP requests to the outbound proxy server. If it is set to 1 (Enabled), all the SIP request messages from the IP phone will be forced to Description send to the outbound proxy server.
Page 338 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format Float Default Value Range 0.5 to 10 Example account.1.advanced.timer_t1 = 0.5 Parameter- Configuration File account.X.advanced.timer_t2 <MAC>.cfg Configures the session timer T2 (in seconds) for account X. T2 represents the maximum retransmit...
Page 339 Appendix Parameter- Configuration File account.X.session_timer.enable <MAC>.cfg Enables or disables the session timer for account X. If it is set to 1 (Enabled), IP phone will send Description periodic re-INVITE requests to refresh the session during a call. X ranges from 1 to 6. Format Boolean Default Value...
Page 340 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones If it is set to 0 (UAC), refreshing the session is performed by the IP phone. If it is set to 1 (UAS), refreshing the session is performed by a SIP server.
Page 341 Configuration File account.X.music_server_uri <MAC>.cfg Configures the Music on Hold server address. Examples for valid values: <10.1.3.165>, 10.1.3.165, sip:moh@sip.com, <sip:moh@sip.com>, <yealink.com> or Description yealink.com. X ranges from 1 to 6. Note: The DNS query in this parameter only supports A query.
Page 342: Call Forward Mode
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Call Forward Mode Parameter- Configuration File features.fwd_mode <y0000000000xx>.cfg Configures the call forward mode for the IP phone. If it is set to 0 (Phone), call forward feature is Description effective for the IP phone.
Page 343 Appendix Parameter- Configuration File forward.always.target < y0000000000xx >.cfg Configures the destination number of the Description always forward. Format String Default Value Blank Range String within 32 characters Example forward.always.target = 3601 Parameter- Configuration File forward.always.on_code < y0000000000xx >.cfg Configures the always forward on code to Description activate the server-side always forward feature.
Page 344 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones forwarded to the destination number when the callee is busy. Format Boolean Default Value Valid values are: 0-Disabled Range 1-Enabled Example forward.busy.enable = 1 Parameter- Configuration File forward.busy.target < y0000000000xx >.cfg Configures the destination number of the Description busy forward.
Page 345 Appendix Default Value Blank Range String within 32 characters Example forward.busy.off_code = *75 No Answer Forward Parameter- Configuration File forward.no_answer.enable < y0000000000xx >.cfg Enables or disables no answer forward feature. Description If it is set to 1 (Enabled), incoming calls are forwarded to the destination number after a period of ring time.
Page 346 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Default Value Range 0 to 20 Example forward.no_answer.timeout = 2 Parameter- Configuration File forward.no_answer.on_code < y0000000000xx >.cfg Configures the no answer forward on code to Description activate the server-side no answer forward feature.
Page 347 Appendix Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example account.1.always_fwd.enable = 1 Parameter- Configuration File account.X.always_fwd.target <MAC>.cfg Configures the destination number of the always forward for account X. Description X ranges from 1 to 6. Format String Default Value Blank Range...
Page 348 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format String Default Value Blank Range String within 32 characters Example account.1.busy_fwd.off_code = *73 Busy Forward Parameter- Configuration File account.X.busy_fwd.enable <MAC>.cfg Enables or disables busy forward feature for account X. If it is set to 1 (Enabled), incoming calls to the...
Page 349 Appendix activate the server-side busy forward feature for account X. X ranges from 1 to 6. Format String Default Value Blank Range String within 32 characters Example account.1.busy_fwd.on_code = *74 Parameter- Configuration File account.X.busy_fwd.off_code <MAC>.cfg Configures the busy forward off code to deactivate the server-side busy forward Description feature for account X.
Page 350 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File account.X.timeout_fwd.target <MAC>.cfg Configures the destination number of the no answer forward for account X. Description X ranges from 1 to 6. Format String Default Value Blank Range String within 32 characters Example account.1.timeout_fwd.target = 3603...
Page 351 Appendix Parameter- Configuration File account.X.timeout_fwd.off_code <MAC>.cfg Configures the no answer forward off code to activate the server-side no answer Description forward feature for account X. X ranges from 1 to 6. Format String Default Value Blank Range String within 32 characters Example account.1.timeout_fwd.off_code = *77 Parameter-...
Page 352 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File transfer.blind_tran_on_hook_ena <y0000000000xx>.cfg Enables or disables the IP phone to complete Description the blind transfer through on-hook. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example transfer.blind_tran_on_hook_enable = 1...
Page 353 Appendix 0-Enabled 1-Disabled Example transfer.semi_attend_tran_enable = 1 Parameter- Configuration File account.X.conf_type <MAC>.cfg Configures the conference type for account If it is set to 0 (Local Conference), conferences are set up on the IP phone Description locally. If it is set to 2 (Network Conference), conferences are set up by the server.
Page 354 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File transfer.tran_others_after_conf_e <y0000000000xx>.cfg nable Enables or disables Transfer on Conference Hang Up feature. If it is set to 1 (Enabled), the other two parties remain connected when the conference Description initiator drops the conference call.
Page 355 Appendix Parameter- Configuration File features.pickup.direct_pickup_co <MAC>.cfg Configures the directed call pickup code on a phone basis. Note: The directed call pickup code Description configured on a per-line basis takes precedence over that configured on a phone basis. Format String Default Value Blank Range String within 32 characters...
Page 356 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones the GPickup soft key when the IP phone is off-hook. Note: It is not applicable to SIP-T20P IP phones. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example features.pickup.group_pickup_enable = 1...
Page 357 Appendix Example account.1.group_pickup_code = *69 Parameter- Configuration File account.X.dialoginfo_callpickup <MAC>.cfg Configures Dialog Info Call Pickup feature for account X. If it is set to 1 (Enabled), call pickup is implemented through SIP signals. Description X ranges from 1 to 6. Note: It is not applicable to SIP-T19P IP phones.
Page 358 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 4-PAI-RPID-FROM 5-RPID-FROM X ranges from 1 to 6. Format Integer Default Value Range 0 to 5 Example account.1.cid_source = 0 Parameter- Configuration File account.X.cp_source <MAC>.cfg Configures the presentation of the callee’s identity for account X.
Page 359 Appendix Parameter- Configuration File account.X.dtmf.type <MAC>.cfg Configures the DTMF type for account X. If it is set to 0 (INBAND), DTMF digits are transmitted in the voice band. If it is set to 1 (RFC 2833), DTMF digits are transmitted by RTP Events compliant to RFC 2833.
Page 360 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File account.X.dtmf.dtmf_payload <MAC>.cfg Configures the RFC 2833 payload type. Description X ranges from 1 to 6. Format Integer Default Value Range 96 to 127 Example account.1.dtmf.dtmf_payload = 101 Parameter- Configuration File account.X.dtmf.info_type...
Page 361 Appendix Parameter- Configuration File features.dtmf.hide <y0000000000xx>.cfg Enables or disables the IP phone to suppress the display of DTMF digits. Description If it is set to 1 (Enabled), the DTMF digits are displayed as asterisks. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled...
Page 362 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones feature. If it is set to 0 (Disabled), the IP phone will perform the transfer as normal when pressing the transfer key during a call. If it is set to 1 (Enabled), the IP phone will...
Page 363 Appendix busy signal to the caller. If it is set to 1 (Enabled), the IP phone will automatically answer an incoming intercom call. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example features.intercom.allow = 1 Parameter- Configuration File features.intercom.mute <y0000000000xx>.cfg Enables or disables the IP phone to mute the...
Page 364 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones answering the intercom call. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example features.intercom.tone = 1 Parameter- Configuration File features.intercom.barge <y0000000000xx>.cfg Enables or disables the IP phone to automatically answer an incoming intercom call while there is already an active call on the IP phone.
Page 365 Appendix Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example features.alert_info_tone = 1 Parameter- Configuration File account.X.alert_info_url_enable <MAC>.cfg Enables or disables the IP phone to download the ring tone from the URL contained in the Alert-Info header for Description account X.
Page 366 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File distinctive_ring_tones.alert_info.X <y0000000000xx>.cfg .ringer Configures the desired ring tones for each text. Description The value ranges from 1 to 5, the digit stands for the appropriate ring tone. X ranges from 1 to 10.
Page 367 Appendix Finland  France  Germany  Great Britain  Greece  Hungary  Lithuania  India  Italy  Japan  Mexico  New Zealand  Netherlands  Norway  Portugal  Spain  Switzerland  Sweden  Russia ...
Page 368 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Where element = [!]Freq1[+Freq2][+Freq3][+Freq4] /Duration Freq: the frequency of the tone (ranges from 200 to 7000 Hz). If it is set to 0 (0Hz), it means the tone is not played. A tone is comprised of at most four different frequencies.
Page 369 Appendix Parameter- Configuration File remote_phonebook.data.X.name <y0000000000xx>.cfg Configures the display name of the remote phone book item. Description Note: It is not applicable to SIP-T20P IP phones. Format String Default Value Blank Range String within 99 characters Example remote_phonebook.data.1.name = yl01 Parameter- Configuration File remote_phonebook.display_name...
Page 370 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Valid values are: Range 0-Disabled 1-Enabled Example features.remote_phonebook.enable = 1 Parameter- Configuration File features.remote_phonebook.flash_ <y0000000000xx>.cfg time Configures how often to refresh the local cache of the remote phone book. If it is set to 3600, the IP phone will refresh the...
Page 371 Appendix Parameter- Configuration File ldap.name_filter <y0000000000xx>.cfg Configures the name attribute for LDAP searching. The “*” symbol in the filter stands for any character. The “%” symbol in the filter stands for the entering string used as the Description prefix of the filter condition. Note: It is not applicable to SIP-T19P and SIP-T20P IP phones.
Page 372 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones LCD screen. Parameter- Configuration File ldap.host <y0000000000xx>.cfg Configures the IP address or domain name of the LDAP server. Description Note: It is not applicable to SIP-T19P and SIP-T20P IP phones. Format IP Address or Domain Name...
Page 373 Appendix Range String within 99 characters Example ldap.base = dc=yealink,dc=cn Parameter- Configuration File ldap.user <y0000000000xx>.cfg Configures the user name uses to login the LDAP server. This parameter can be left blank in case the server allows anonymous to login. Otherwise...
Page 374 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File ldap.max_hits <y0000000000xx>.cfg Configures the maximum number of search results to be returned by the LDAP server. If the value of the “Max.Hits” is blank, the LDAP server will return all searched results.
Page 375 Appendix separated by spaces. Note: It is not applicable to SIP-T19P and SIP-T20P IP phones. Format String Default Value Blank Range String within 99 characters Example ldap.numb_attr = telephoneNumber Parameter- Configuration File ldap.display_name <y0000000000xx>.cfg Configures the display name of the contact record displayed on the LCD screen.
Page 376 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File ldap.call_in_lookup <y0000000000xx>.cfg Enables or disables the IP phone to perform an LDAP search when receiving an incoming call. Description Note: It is not applicable to SIP-T19P and SIP-T20P IP phones.
Page 377 Appendix receives an incoming call. Note: It is not applicable to SIP-T19P and SIP-T20P IP phones. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled Example features.pickup.blf_visual_enable = 1 Parameter- Configuration File features.pickup.blf_audio_enable <MAC>.cfg Enables or disables the IP phone to play an alert tone when the monitored user receives an incoming call.
Page 378 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Range 0 to 3 Example features.blf_led_mode = 1 Parameter- Configuration File account.X.acd.enable <MAC>.cfg Enables or disables ACD feature for account Description X ranges from 1 to 6. Format Boolean Default Value Valid values are:...
Page 379 Appendix automatically change the phone status to available. Format Boolean Default Value Valid values are: Value 0-Disabled 1-Enabled Example acd.auto_available = 1 Parameter- Configuration File acd.auto_available_timer <y0000000000xx>.cfg Configures the length of time (in seconds) before the IP phone state is automatically changed to available.
Page 380 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 1-Enabled Example account.1.subscribe_mwi = 0 Parameter- Configuration File account.X.subscribe_mwi_expires <MAC>.cfg Configures MWI subscribe expiry time (in seconds) for account X. The IP phone is able to successfully refresh the SUBSCRIBE for message-summary...
Page 381 Appendix Note: It works only if the parameters “account.X.subscribe_mwi” is set to 1 (Enabled) and “voice_mail.number.X” is configured. Format Boolean Default Value Valid values are: Value 0-Disabled 1-Enabled Example account.1.subscribe_mwi_to_vm = 0 Parameter- Configuration File multicast.codec <y0000000000xx>.cfg Configures a multicast codec for the IP phone to use to send an RTP stream.
Page 382 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File multicast.receive_priority.enable <y0000000000xx>.cfg Enables or disables the IP phone to handle the incoming multicast paging calls when there is an active multicast paging call on the IP phone. Description If it is set to 1 (Enabled), the IP phone will...
Page 383 Appendix multicast. X ranges from 1 to 10. Format String Default Value Blank Range String within 99 characters Example multicast.listen_address.1.label = Paging1 Parameter- Configuration File multicast.listen_address.X.ip_addr < y0000000000xx >.cfg Configures the multicast address and port number that the IP phone listens to. Description X ranges from 1 to 10.
Page 384 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones action_url.always_fwd_off action_url.busy_fwd_on action_url.busy_fwd_off action_url.no_answer_fwd_on action_url.no_answer_fwd_off action_url.transfer_call action_url.blind_transfer_call action_url.attended_transfer_call action_url.hold action_url.unhold action_url.mute action_url.unmute action_url.missed_call action_url.call_terminated action_url.busy_to_idle action_url.idle_to_busy action_url.ip_change action_url.forward_incoming_call action_url.reject_incoming_call action_url.answer_new_incoming_ call action_url.transfer_finished action_url.transfer_failed Configures the URL for the predefined event. The value format is: http(s)://IP address of server/help.xml? variable name=variable...
Page 385 Appendix $remote  $display_local  $display_remote  $call_id  Format Default Value Blank Range String within 511 characters action_url.mute = Example http://192.168.0.20/help.xml?model=$mo Parameter- Configuration File features.action_uri_limit_ip <y0000000000xx>.cfg Configures the address(es) from which Action URI will be accepted. For discontinuous IP addresses, multiple IP addresses are separated by commas.
Page 386 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File account.X.sip_server.Y.address <MAC>.cfg Configures the IP address or domain name of the SIP server Y for account X. Description X ranges from 1 to 6. Y ranges from 1 to 2.
Page 387 Appendix Example account.1.sip_server.1.expires = 3600 Parameter- Configuration File account.X.sip_server.Y.retry_counts <MAC>.cfg Configures the retry times for the IP phone to resend requests when the SIP server Y does not respond correctly for account X. Description X ranges from 1 to 6. Y ranges from 1 to 2.
Page 388: Failover Mode
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones registration mode. X ranges from 1 to 6. Format Integer Default Value Range 10 to 2147483647 Example account.1.fallback.timeout = 120 Failover Mode Parameter- Configuration File account.X.sip_server.Y.failback_mo <MAC>.cfg Configures the mode for the IP phone to retry the primary server in failover mode.
Page 389 Appendix Parameter- Configuration File account.X.sip_server.Y.failback_tim <MAC>.cfg eout Configures the timeout (in seconds) for the IP phone to retry to send requests to the primary server after failing over to the current working server when the parameter “account.X.sip_server.Y.failback_mode” is set to 3 (duration). Description If you set the parameter to 0, the IP phone will not send requests to the primary server...
Page 390 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File account.X.transport <MAC>.cfg Configures the transport type for account X. If the parameter is set to 3 (DNS-NAPTR) and no server port is given, the IP phone Description performs the DNS NAPTR and SRV queries for the service type and port.
Page 391 Appendix Parameter- Configuration File network.lldp.enable <y0000000000xx>.cfg Enables or disables LLDP feature on the IP phone. Description Note: If you change this parameter, the IP phone will reboot to make the change take effect. Format Boolean Default Value Valid values are: Range 0-Disabled 1-Enabled...
Page 392 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones VLAN tag on packet from the Internet port. Note: If you change this parameter, the IP phone will reboot to make the change take effect. Format Boolean Default Value Valid values are:...
Page 393 Appendix Example network.vlan.internet_port_priority = 0 PC Port Parameter- Configuration File network.vlan.pc_port_enable <y0000000000xx>.cfg Enables or disables the IP phone to insert VLAN tag on packet from the PC port. Description Note: If you change this parameter, the IP phone will reboot to make the change take effect.
Page 394 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format Integer Default Value Range 0 to 7 Example network.vlan.pc_port_priority = 0 DHCP VLAN Discovery Parameter- Configuration File network.vlan.dhcp_enable <y0000000000xx>.cfg Enables or disables DHCP VLAN discovery feature on the IP phone. Description...
Page 395 Appendix Parameter- Configuration File network.vpn_enable <y0000000000xx>.cfg Enables or disables VPN feature on the IP phone. Note: It is not applicable to SIP-T19P IP Description phones. If you change this parameter, the IP phone will reboot to make the change take effect.
Page 396 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Note: If you change this parameter, the IP phone will reboot to make the change take effect. Format Integer Default Value Range 0 to 63 Example network.qos.rtptos = 46 Parameter- Configuration File network.qos.signaltos...
Page 397 Appendix Parameter- Configuration File account.X.nat.stun_server <MAC>.cfg Configures the IP address or the domain name of the STUN server for account X. Description X ranges from 1 to 6. Format IP Address or Domain Name Default Value Blank Range String within 99 characters account.1.nat.stun_server = Example 218.107.220.201...
Page 398 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 2-EAP-TLS 3-PEAP-MSCHAPv2 4-EAP-TTLS/EAP-MSCHAPv2 Example network.802_1x.mode = 1 Parameter- Configuration File network.802_1x.identity <y0000000000xx>.cfg Configures the identity used for authenticating the IP phone. Description Note: If you change this parameter, the IP phone will reboot to make the change take effect.
Page 399 Appendix certificate used for authentication. Note: If you change this parameter, the IP phone will reboot to make the change take effect. It is only applicable to EAP-TLS, PEAP-MSCHAPv2 and EAP-TTLS/EAP-MSCHAPv2 protocols. The format of the certificate must be *.pem, *.crt, *.cer or *.der.
Page 400 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Valid values are: Range 0-Disabled 1-Enabled Example managementserver.enable = 1 Parameter- Configuration File managementserver.username <y0000000000xx>.cfg Configures the user name to authenticate Description with the ACS. This string is set to the empty string if no authentication is required.
Page 401 Appendix Parameter- Configuration File managementserver.connection_re <y0000000000xx>.cfg quest_username Configures the user name for the IP phone Description to authenticate the incoming connection requests. Format String Default Value Blank Range String within 128 characters managementserver.connection_request_ Example username = acsuser Parameter- Configuration File managementserver.connection_re <y0000000000xx>.cfg quest_password...
Page 402 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones managementserver.periodic_inform_ena Example ble = 1 Parameter- Configuration File managementserver.periodic_infor <y0000000000xx>.cfg m_interval Configures the interval (in seconds) to Description report its configuration information to the ACS. Format Integer Default Value Range 5 to 4294967295 managementserver.periodic_inform_inte...
Page 403 Appendix phone will reboot to make the change take effect. Format Integer Default Value Valid values are: 0-DHCP Range 1-Static IP Address Example network.ipv6_internet_port.type = 0 Parameter- Configuration File network.ipv6_static_dns_enable <y0000000000xx>.cfg Enables or disables the phone to use manually configured static IPv6 DNS when the parameter “network.ipv6_internet_port.type”...
Page 404 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Default Value Blank Range Not Applicable network.ipv6_internet_port.ip = Example 2026:1234:1:1:215:65ff:fe1f:caa Parameter- Configuration File network.ipv6_prefix <MAC>.cfg Configures the prefix of the IPv6 address when the IPv6 address assignment method is configured as Static IP Address...
Page 405 Appendix Parameter- Configuration File network.ipv6_primary_dns <MAC>.cfg Configures the primary DNS server when the IPv6 address assignment method is configured as Static IP Address and the IP address mode is configured as IPv6 or Description IPv4&IPv6. Note: If you change this parameter, the IP phone will reboot to make the change take effect.
Page 406 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File features.headset_prior <y0000000000xx>.cfg Enables or disables headset prior feature. If it is set to 1 (enabled), a user needs to press the HEADSET key to activate the Description headset mode. The headset mode will not be deactivated until the user presses the HEADSET key again.
Page 407 Appendix 0-Disabled 1-Enabled Example features.headset_training = 1 Parameter- Configuration File account.X.codec.Y.enable <MAC>.cfg Enables or disables the IP phone to use the specific codec for account X. Description X ranges from 1 to 6. Y ranges from 1 to 11. Format Boolean For SIP-T20P/T22P/T26P/T28P IP phones: When Y=1, the default value is 1;...
Page 408 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 1-Enabled Example account.1.codec.1.enable = 1 Parameter- Configuration File account.X.codec.Y.payload_type <MAC>.cfg Configures the codec for account X to use. Description X ranges from 1 to 6. Y ranges from 1 to 11. Format...
Page 409 Appendix G723_63 G726-16 G726-24 G726-32 G726-40 iLBC account.1.codec.1.payload_type = Example PCMU Parameter- Configuration File account.X.codec.Y.priority <MAC>.cfg Configures the priority for the codec. Description X ranges from 1 to 6. Y ranges from 1 to 11. Format Integer For SIP-T20P/T22P/T26P/T28P IP phones: When Y=1, the default value is 1;...
Page 410 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Range 0 to 10 Example account.1.codec.1.priority = 1 Parameter- Configuration File account.X.codec.Y.rtpmap <MAC>.cfg Configures the rtpmap. Description X ranges from 1 to 6. Y ranges from 1 to 11. Format Integer For SIP-T20P/T22P/T26P/T28P IP phones: When Y=1, the default value is 0;...
Page 411 Appendix Ptime Parameter- Configuration File account.X.ptime <MAC>.cfg Configures the ptime (in milliseconds) for the codec. Description X ranges from 1 to 6. Format Integer Default Value Valid values are: Range 0 (Disabled) 10, 20, 30, 40, 50, 60 Example account.1.ptime = 20 Parameter- Configuration File voice.echo_cancellation...
Page 412 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Valid values are: Range 0-Disabled 1-Enabled Example voice.vad = 1 Parameter- Configuration File voice.cng <y0000000000xx>.cfg Enables or disables CNG feature on the IP Description phone. Format Boolean Default Value Valid values are:...
Page 413 Appendix Note: It works only if the parameter “voice.jib.adaptive” is set to 1 (Adaptive). Format Integer Default Value Range 0 to 400 Example voice.jib.min = 60 Parameter- Configuration File voice.jib.max <y0000000000xx>.cfg Configures the maximum delay time for jitter buffer. Description Note: It works only if the parameter “voice.jib.adaptive”...
Page 414 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File account.X.transport <MAC>.cfg Configures the transport type for account X. If it is set to 2 (TLS), the SIP message of this account will be encrypted after the Description successful TLS negotiation.
Page 415 Appendix Parameter- Configuration File security.ca_cert <y0000000000xx>.cfg Configures the type of certificates the IP phone used to authenticate the connecting server. Description Note: If you change this parameter, the IP phone will reboot to make the change take effect. Format Integer Default Value Valid values are: 0-Default certificates...
Page 416 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Note: If you change this parameter, the IP phone will reboot to make the change take effect. Format Integer Default Value Valid values are: 0-Default certificates Range 1-Custom certificates Example security.dev_cert = 0...
Page 417: Srtp
Appendix Range String within 511 characters trusted_certificates.url = Example http://192.168.1.20/tc.crt Parameter- Configuration File server_certificates.url <y0000000000xx>.cfg Configures the access URL of the certificate the IP phone sends for authentication. Description Note: The certificate you want to upload must be in *.pem or *.cer format. Format Default Value Blank...
Page 418: Configuring Decryption Method
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File auto_provision.aes_key_in_file <y0000000000xx>.cfg Enables or disables the IP phone to decrypt configuration files using the encrypted AES keys. If it is set to 1 (Enabled), the IP phone will download <y0000000000xx_Security>.enc and <MAC_Security>.enc files during auto...
Page 419 Appendix characters contain: 0 ~ 9, A ~ Z, a ~ z auto_provision.aes_key_16.com = Example 0123456789abcdef Parameter- Configuration File auto_provision.aes_key_16.mac <y0000000000xx>.cfg Configures the plaintext AES key which is used to decrypt the <MAC>.cfg file. Description Note: It works only if the parameter “auto_provision.aes_key_in_file”...
Page 420 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File dialplan_replace_rule.url <y0000000000xx>.cfg Configures the access URL of the replace Description rule template. Format Default Value Blank Range String within 511 characters dialplan_replace_rule.url = Example http://192.168.10.25/dialplan.xml Parameter- Configuration File dialplan_dialnow.url <y0000000000xx>.cfg...
Page 421 Appendix Default Value Blank Range String within 511 characters The following example uses HTTP to download the CallFailed state file from the “XMLfiles” directory on provisioning server 10.2.8.16 using 8080 port. Example custom_softkey_call_failed.url = http://10.2.8.16:8080/XMLfiles/CallFailed.x Parameter- Configuration File custom_softkey_call_in.url <y0000000000xx>.cfg Configures the access URL of the custom Description file for the soft key presented on the LCD...
Page 422 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones custom_softkey_connecting.url = http://10.2.8.16:8080/XMLfiles/Connecting. Parameter- Configuration File custom_softkey_dialing.url <y0000000000xx>.cfg Configures the access URL of the custom file for the soft key presented on the LCD Description screen when in the Dialing state. Format...
Page 423 Appendix Parameter- Configuration File custom_softkey_talking.url <y0000000000xx>.cfg Configures the access URL of the custom file Description for the soft key presented on the LCD screen when in the Talking state. Format Default Value Blank Range String within 511 characters The following example uses HTTP to download the Talking state file from the “XMLfiles”...
Page 424 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Range String within 511 characters super_search.url = Example http://192.168.1.20/super_search.xml Parameter- Configuration File local_contact.data.url <y0000000000xx>.cfg Configures the access URL of the local Description contact file. Format Default Value Blank Range String within 511 characters local_contact.data.url =...
Page 425 Appendix Parameter- Configuration File syslog.mode <y0000000000xx>.cfg Configures the syslog mode. Note: If you change this parameter, the IP Description phone will reboot to make the change take effect. Format Integer Default Value 0-Local Range 1-Server Example syslog.mode = 1 Parameter- Configuration File syslog.server <y0000000000xx>.cfg...
Page 426 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File syslog.log_level <y0000000000xx>.cfg Configures the severity level of the logs to be reported to a log file. Description Note: If you change this parameter, the IP phone will reboot to make the change take effect.
Page 427 Appendix SIP-T20P SIP-T19P Note The programable key takes effect only if the IP phone is idle. DSS key can be assigned with various key features. The parameters of the DSS key are detailed in the following: Parameter- Configuration File memorykey.X.type <y0000000000xx>.cfg Parameter- linekey.X.type...
Page 428 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Speed Dial  Intercom  Line    Group Listening  XML Group  Group Pickup  Multicast Paging  Record  XML Browser  URL Record  LDAP  Prefix ...
Page 429 Appendix Group Listening  XML Group (not applicable to SIP-T20P IP  phones) Group Pickup  Multicast Paging  Record  XML Browser  Hot Desking  URL Record  LDAP (not applicable to SIP-T20P IP phones)  Prefix  Zero Touch ...
Page 430 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones phones) LDAP (not applicable to SIP-T19P and  SIP-T20P IP phones) Prefix (not applicable to SIP-T20P IP phones)  Zero Touch  Local Directory  Local Group  XML Directory (not applicable to SIP-T20P IP ...
Page 431 Appendix 11-DTMF 12-Voice Mail 13-Speed Dial 14-Intercom 15-Line 16-BLF 17-URL 18-Group Listening 22-XML Group 23-Group Pickup 24-Multicast Paging 25-Record 27-XML Browser 28-History 30-Menu 31-Switch Account 32-New SMS 33-Status 34-Hot Desking 35-URL Record 38-LDAP 40-Prefix 41-Zero Touch 42-ACD 43-Local Directory 45-Local Group 47-XML Directory 49-Custom Button 50-Keypad Lock...
Page 432 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File memorykey.X.line <y0000000000xx>.cfg Parameter- linekey.X.line Parameter- programablekey.X.line Configures the desired line to apply the key feature. For the memory key, x ranges from 1 to 10. For the line key, x ranges from 1 to 6.
Page 433 Appendix Zero Touch  URL (not applicable to SIP-T20P)  Keypad Lock  Directory  Format Integer For the memory key and programable key, the default value is not applicable. For the line key, when x=1, the default value is 1. Default Value When x=2, the default value is 2.
Page 434 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format String Default Value Blank Range String within 99 characters When you assign the Speed Dial to the memory key, this parameter is used to specify Example the number you want to dial out.
Page 435 Appendix For the programable key, x ranges from 1 to 14 (For SIP-T19P IP phones, x=1-9, 13, 14; For SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP phones, x=1-10, 14; For SIP-T22P IP phones, x=1-10, 12-14; For SIP-T26P/T28P IP phones, x ranges from 1 to 14).
Page 436 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones For the line key, x ranges from 1 to 6. For the programable key, x ranges from 1 to 14 (For SIP-T19P IP phones, x=1-9, 13, 14; For SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP phones, x=1-10, 14;...
Page 437 Appendix Directed Call Pickup Key Parameter- Configuration File memorykey.X.type <y0000000000xx>.cfg Parameter- linekey.X.type Parameter- programablekey.X.type Configures a DSS key as a directed call pickup key on the IP phone. The digit 9 stands for the key type Directed Pickup. For the memory key, x ranges from 1 to 10. For the line key, x ranges from 1 to 6.
Page 438 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones phones, x=1-10, 14; For SIP-T22P IP phones, x=1-10, 12-14; For SIP-T26P/T28P IP phones, x ranges from 1 to 14). Format Integer Valid values are: 1 to 6 (for SIP-T28P) 1 to 3 (for SIP-T26P/T22P)
Page 439 Appendix Group Call Pickup Key Parameter- Configuration File memorykey.X.type <y0000000000xx>.cfg Parameter- linekey.X.type Parameter- programablekey.X.type Configures a DSS key as a group call pickup key on the IP phone. The digit 23 stands for the key type Group Pickup. For the memory key, x ranges from 1 to 10. For the line key, x ranges from 1 to 6.
Page 440 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones phones, x=1-10, 14; For SIP-T22P IP phones, x=1-10, 12-14; For SIP-T26P/T28P IP phones, x ranges from 1 to 14). Format Integer Valid values are: 1 to 6 (for SIP-T28P) 1 to 3 (for SIP-T26P/T22P)
Page 441 Appendix Call Return Key Parameter- Configuration File memorykey.X.type <y0000000000xx>.cfg Parameter- linekey.X.type Parameter- programablekey.X.type Configures a DSS key as a call return key on the IP phone. The digit 7 stands for the key type Call Return. For the memory key, x ranges from 1 to 10. For the line key, x ranges from 1 to 6.
Page 442 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Value Example memorykey.1.type = 10 Parameter- Configuration File memorykey.X.line <y0000000000xx>.cfg Parameter- linekey.X.line Configures the desired line to apply the call park key. For the memory key, x ranges from 1 to 10.
Page 443: Intercom Key
Appendix Intercom Key Parameter- Configuration File memorykey.X.type <y0000000000xx>.cfg Parameter- linekey.X.type Configures a DSS key as an intercom key. The digit 14 stands for the key type Intercom. Description For the memory key, x ranges from 1 to 10. For the line key, x ranges from 1 to 6. Note: It is not applicable to SIP-T19P IP phones.
Page 444 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File memorykey.X.value <y0000000000xx>.cfg Parameter- linekey.X.value Configures the intercom number. For the memory key, x ranges from 1 to 10. Description For the line key, x ranges from 1 to 6.
Page 445 Appendix BLF Key Parameter- Configuration File memorykey.X.type <y0000000000xx>.cfg Parameter- linekey.X.type Configures a DSS key as a BLF key on the IP phone. The digit 16 stands for the key type BLF. Description For the memory key, x ranges from 1 to 10. For the line key, x ranges from 1 to 6.
Page 446 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Parameter- Configuration File memorykey.X.value <y0000000000xx>.cfg Parameter- linekey.X.value Configures the number of the monitored user. For the memory key, x ranges from 1 to 10. Description For the line key, x ranges from 1 to 6.
Page 447 Appendix The digit 42 stands for the key type ACD. For the memory key, x ranges from 1 to 10. For the line key, x ranges from 1 to 6. Note: It is not applicable to SIP-T19P IP phones. Format Integer Value Example...
Page 448 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Format IP Address Range 224.0.0.0 to 239.255.255.255 Example memorykey.1.value = 224.5.5.6:10008 Record Key Parameter- Configuration File memorykey.X.type <y0000000000xx>.cfg Parameter- linekey.X.type Configures a DSS key as a record key on the IP phone.
Page 449 Appendix Parameter- Configuration File memorykey.X.value <y0000000000xx>.cfg Parameter- linekey.X.value Configures the URL to record a call. For the memory key, x ranges from 1 to 10. Description For the line key, x ranges from 1 to 6. Note: It is not applicable to SIP-T19P IP phones. Format String Default Value...
Page 450 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones This section describes how Yealink IP phones comply with the IETF definition of SIP as described in RFC 3261. This section contains compliance information in the following: RFC and Internet Draft Support ...
Page 451 Appendix RFC 3311—The Session Initiation Protocol (SIP) UPDATE Method  RFC 3312—Integration of Resource Management and SIP  RFC 3313—Private SIP Extensions for Media Authorization  RFC 3323—A Privacy Mechanism for the Session Initiation Protocol (SIP)  RFC 3324—Requirements for Network Asserted Identity ...
Page 452 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones RFC 3960—Early Media and Ringing Tone Generation in SIP  RFC3966—The tel URI for telephone number  RFC 3968—The Internet Assigned Number Authority (IANA) Header Field  Parameter Registry for the Session Initiation Protocol (SIP) RFC 3969—The Internet Assigned Number Authority (IANA) Uniform Resource...
Page 453 Appendix The following SIP request messages are supported: Method Supported Notes REGISTER Yealink IP phones support mid-call changes such as placing a call on hold as INVITE signaled by a new INVITE that contains an existing Call-ID. CANCEL OPTIONS SUBSCRIBE...
Page 454 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Method Supported Notes Allow Allow-Events Authorization Call-ID Call-Info Contact Content-Length Content-Type CSeq Diversion History-Info Event Expires From Max-Forwards Min-SE P-Asserted-Identity P-Preferred-Identity Proxy-Authenticate Proxy-Authorization RAck Record-Route Refer-To Referred-By Remote-Party-ID Replaces Require Route RSeq...
Page 455 Appendix Method Supported Notes Subscription-State Supported User-Agent The following SIP responses are supported: Note In the following table, a “Yes” in the Supported column means the header is sent and properly parsed. The phone may not actually generate the response. 1xx Response—Information Responses 1xx Response Supported...
Page 456 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones 4xx Response—Request Failure Responses 4xx Response Supported Notes 400 Bad Request 401 Unauthorized 402 Payment Required 403 Forbidden 404 Not Found 405 Method Not Allowed 406 Not Acceptable 407 Proxy Authentication Required...
Page 457 Appendix 4xx Response Supported Notes 491 Request Pending 493 Undecipherable 5xx Response—Server Failure Responses 5xx Response Supported Notes 500 Internal Server Error 501 Not Implemented 502 Bad Gateway 503 Service Unavailable 504 Gateway Timeout 505 Version Not Supported 6xx Response—Global Responses 6xx Response Supported Notes...
Page 458  The following figure illustrates the scenario of a successful call. In this scenario, the two end users are User A and User B. User A and User B are located at Yealink SIP IP phones. The call flow scenario is as follows: User A calls User B.
Page 459 Appendix User B hangs up. User A Proxy Server User B F1. INVITE B F2. INVITE B F3. 100 Trying F4. 100 Trying F5. 180 Ringing F6. 180 Ringing F7. 200 OK F8. 200 OK F9. ACK F10. ACK 2-way RTP channel established F11.
Page 460 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description The media capability User A is  ready to receive is specified. The port on which User B is  prepared to receive the RTP data is specified. The proxy server maps the SIP URI in the INVITE—Proxy Server to User...
Page 461 The following figure illustrates the scenario of an unsuccessful call caused by the called user’s being busy. In this scenario, the two end users are User A and User B. User A and User B are located at Yealink SIP IP phones.
Page 462 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The call flow scenario is as follows: User A calls User B. User B is busy on the IP phone and unable or unwilling to take another call. The call cannot be set up successfully.
Page 463 The following figure illustrates the scenario of an unsuccessful call caused by the called user’s no answering. In this scenario, the two end users are User A and User B. User A and User B are located at Yealink SIP IP phones.
Page 464 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The call flow scenario is as follows: User A calls User B. User B does not answer the call. User A hangs up. The call cannot be set up successfully. User A...
Page 465 Appendix Step Action Description User A sends an INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 466 The following figure illustrates a successful call setup and call hold. In this scenario, the two end users are User A and User B. User A and User B are located at Yealink SIP IP phones. The call flow scenario is as follows: User A calls User B.
Page 467 Appendix User A places User B on hold. User A Proxy Server User B F1. INVITE B F2. INVITE B F3. 180 Ringing F4. 180 Ringing F5. 200 OK F6. 200 OK F7. ACK F8. ACK 2-way RTP channel established F9.
Page 468 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description User A sends an INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 469 In this call flow scenario, the end users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via an IP network.
Page 470 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones The call flow scenario is as follows: User A calls User B. User B answers the call. User C calls User B. User B accepts the call from User C. Proxy Server...
Page 471 Appendix Step Action Description User A sends an INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 472 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description User A sends a SIP ACK to the proxy server, The ACK confirms that User A ACK—User A to Proxy Server has received the 200 OK response. The call session is now active.
Page 473 Appendix Step Action Description User A sends a mid-call INVITE request INVITE—User A to Proxy to the proxy server with new SDP Server session parameters, which are used to place the call on hold. INVITE—Proxy Server to User The proxy server forwards the mid-call INVITE message to User B.
Page 474 This is called a blind transfer. In this call flow scenario, the end users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via an IP network.
Page 475 Appendix User C answers the call. Call is established between User A and User C. User A Proxy Server User B User C F1. INVITE B F2. INVITE B F3. 180 Ringing F4. 180 Ringing F5. 200 OK F6. 200 OK F7.
Page 476 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description User A sends an INVITE message to the proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 477 Appendix Step Action Description User A sends a SIP ACK to the proxy server, The ACK confirms that User A ACK—User A to Proxy Server has received the 200 OK response. The call session is now active. The proxy server sends the SIP ACK to User B.
Page 478 This is called attended transfer. In this call flow scenario, the end users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via an IP network.
Page 479 Appendix User A transfers the call to User C. Call is established between User B and User C. User A Proxy Server User B User C F1. INVITE B F2. INVITE B F3. 180 Ringing F4. 180 Ringing F5. 200 OK F6.
Page 480 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description User A sends an INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 481 Appendix Step Action Description User A sends a SIP ACK to the proxy server, The ACK confirms that User A ACK—User A to Proxy Server has received the 200 OK response. The call session is now active. The proxy server sends the SIP ACK to User B.
Page 482 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description sends the INVITE request to User C. User C sends a SIP 180 Ringing 180 Ringing—User C to Proxy response to the proxy server. The 180 Server Ringing response indicates that the user is being alerted.
Page 483 User C when User A calls User B. In this call flow scenario, the end users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via an IP network.
Page 484 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones User C answers the call. Call is established between User A and User C. User A Proxy Server User B User C F1. INVITE B F2. INVITE B F3. 302 Move Temporarily F4.
Page 485 Appendix Step Action Description User A sends an INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of the User B is ...
Page 486 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description User A sends a SIP INVITE request to the proxy server. In the INVITE request, a INVITE—User A to Proxy unique Call-ID is generated and the Server Contact-URI field indicates that User A requested the call.
Page 487 User B is busy. In this call flow scenario, the end users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via an IP network. The call flow scenario is as follows: User B enables busy call forward, and the destination number is User C.
Page 488 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description User A sends the INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 489 Appendix Step Action Description ACK message. 302 Move Temporarily—Proxy The proxy server forwards the 302 Server to User A Moved Temporarily message to User A. User A sends a SIP ACK to the proxy server. The ACK message notifies the ACK—User A to Proxy Server proxy server that User A has received the ACK message.
Page 490 User C when User B does not answer the incoming call after a period of time. In this call flow scenario, the end users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via an IP network.
Page 491 Appendix Step Action Description User A sends the INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 492 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description ACK message. 302 Move Temporarily—Proxy The proxy server forwards the 302 Server to User A Moved Temporarily message to User A. User A sends a SIP ACK to the proxy server.
Page 493 User B and User C. In this call flow scenario, the end users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via an IP network. The call flow scenario is as follows: User A calls User B.
Page 494 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones User A mixes the RTP channels and establishes a conference between User B and User C. User A User B User C Proxy Server F1. INVITE B F2. INVITE B F3. 180 Ringing F4.
Page 495 Appendix Step Action Description User A sends the INVITE message to a proxy server. The INVITE request is an invitation to User B to participate in a call session. In the INVITE request: The IP address of User B is inserted ...
Page 496 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Step Action Description User A sends a SIP ACK to the proxy server. The ACK confirms that User A ACK—User A to Proxy Server has received the 200 OK response. The call session is now active.
Page 497 Appendix Step Action Description sends the SIP INVITE request to User C. User C sends a SIP 180 Ringing 180 Ringing—User C to Proxy response to the proxy server. The 180 Server Ringing response indicates that the user is being alerted. The proxy server forwards the 180 180 Ringing—Proxy Server to Ringing response to User A.
Page 498: Sample Configuration File
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones This section provides the sample configuration file necessary to configure the IP phone. Any line beginning with a pound sign (#) is considered to be a comment, unless the # is contained within double quotes. For Boolean fields, 0 = disabled, 1 = enabled.
Page 499: Time Settings
Appendix phone_setting.dialnow_delay = dialplan.replace.prefix.1 = dialplan.replace.replace.1 = dialplan.replace.line_id.1 = dialplan.item.1 = Time Settings local_time.time_zone = local_time.time_zone_name = local_time.ntp_server1 = local_time.ntp_server2 = local_time.interval = local_time.dhcp_time = #Use the following parameters to set the time and date manually. local_time.manual_time_enable = local_time.date_format = local_time.time_format = Auto DST Settings local_time.summer_time =...
Page 500: Call Hold
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones #Call Hold features.play_hold_tone.enable = features.play_hold_tone.delay = sip.rfc2543_hold = #Hotline features.hotline_number = features.hotline_delay = #Web Server Type wui.http_enable = network.port.http = wui.https_enable = network.port.https = #DTMF Suppression features.dtmf.hide = features.dtmf.hide_delay = Call Forward # In Phone Mode features.fwd_mode = 0...
Page 501: Call Transfer
Appendix account.1.busy_fwd.on_code = account.1.busy_fwd.off_code = account.1.timeout_fwd.enable = account.1.timeout_fwd.target = account.1.timeout_fwd.timeout = account.1.timeout_fwd.on_code = account.1.timeout_fwd.off_code = Call Transfer transfer.semi_attend_tran_enable = transfer.blind_tran_on_hook_enable = transfer.on_hook_trans_enable = transfer.tran_others_after_conf_enable = Call Conference account.1.conf_type = account.1.conf_uri = DTMF account.1.dtmf.type = account.1.dtmf.dtmf_payload = account.1.dtmf.info_type = Distinctive Ring Tones account.1.alert_info_url_enable = distinctive_ring_tones.alert_info.1.text = distinctive_ring_tones.alert_info.1.ringer =...
Page 502: Action Url
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones LDAP ldap.enable = ldap.name_filter = ldap.number_filter = ldap.host = ldap.port = ldap.base = ldap.user = ldap.password = ldap.max_hits = ldap.name_attr = ldap.numb_attr = ldap.display_name = ldap.version = ldap.call_in_lookup = ldap.ldap_sort = Action URL action_url.setup_completed =...
Page 503 Appendix action_url.busy_to_idle = action_url.idle_to_busy = action_url.ip_change = action_url.forward_incoming_call = action_url.reject_incoming_call = action_url.answer_new_incoming_call = action_url.transfer_finished = action_url.transfer_failed = #Access URL of Resource Files dialplan_dialnow.url = dialplan_replace_rule.url = local_contact.data.url = remote_phonebook.data.1.url = directory_setting.url = super_search.url =...
Page 504 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Numeric 180 Ring Workaround Call Completion 802.1X Authentication Call Forward Call Hold Call Log Call Park About This Guide Call Recording Acoustic Echo Cancellation Call Return Action URL Call Transfer Action URI...
Page 505: Key Features Of Ip Phones
Index Encrypting Configuration Files Multicast Paging Enabling the Watch Dog Feature NAT Traversal Getting Information from Status Indicators Network Address Translation (NAT) Getting Started Network Conference Group Call Pickup No Answer Forward H.323 Phone Lock Headset Prior Phone User Interface Hot Desking Physical Features of IP Phones Hotline...
Page 506 Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones Specifying the Language to Use SRTP STUN Server Suppress DTMF Display Summary of Changes Table of Contents Time and Date Transfer on Conference Hang Up Transfer via DTMF Transport Layer Security (TLS)

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Sip-t19p Sip-t28p Sip-t26p Sip-t22p Sip-t21p Sip-t20p

Yealink SIP-T2xP Administrator's Manual

Table of Contents

Product Overview

Getting Started

Configuring Basic Features

Configuring Audio Features

Configuring Security Features

Resource Files

Troubleshooting

Appendix 264

Appendix A: Glossary 264

Appendix B: Time Zones 266

Appendix C: Configuration Parameters 268

Appendix D: SIP 434

Appendix E: SIP Call Flows 442

Appendix F: Sample Configuration File 482

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Summary of Contents for Yealink SIP-T2xP

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Table of Contents