To update the name on your Yealink SIP-T21 E2 phone, you need to modify the display name, which is shown on the callee’s phone LCD screen. This is typically configured through the phone’s web user interface and may be overridden by server settings. You should:

1. Access the phone’s web user interface using its IP address.
2. Log in (default credentials may be required).
3. Navigate to the account settings section.
4. Locate the “Display Name” field.
5. Enter the desired name.
6. Save the changes.

Note: The new name may not take effect if overridden by server configurations.

This answer is automatically generated

Summary of Contents for Yealink SIP-T21 E2

Page 2 Copyright © 2016 YEALINK NETWORK TECHNOLOGY CO., LTD Copyright © 2016 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 SIP-T21(P) E2 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.
Page 5 IP phone, exquisitely designed to provide business telephony features, such as Call Hold, Call Transfer, Busy Lamp Field, Multicast Paging and Conference over an IP network. The difference between the SIP-T21 E2 and SIP-T21P E2 IP phones is that only SIP-T21P E2 supports PoE.
Page 6 User Guide for the SIP-T21(P) E2 IP Phone Optional Accessories on page  Phone Installation on page  Troubleshooting on page  Appendix A - Time Zones on page  The following sections are new: Shared Call Appearance (SCA) on page ...
Page 7: Table Of Contents
Table of Contents About This Guide ..............v In This Guide ......................... v Summary of Changes ......................v Changes for Release 80, Guide Version 80.95 .............. v Changes for Release 80, Guide Version 80.60 ............. vi Table of Contents ..............vii Overview ..................
Page 8 User Guide for the SIP-T21(P) E2 IP Phone Phone Lock ........................30 Audio Settings ........................33 Volume ..........................33 Ring Tones ........................33 Contact Management ....................... 35 Directory........................... 35 Local Directory ........................ 37 Blacklist ..........................47 Remote Phone Book ......................49 Call History Management ....................
Page 9 Table of Contents Advanced Phone Features ............111 Busy Lamp Field (BLF) ..................... 111 BLF List ..........................113 Call Recording ........................115 Hot Desking ........................117 Intercom ..........................118 Outgoing Intercom Calls ....................118 Incoming Intercom Calls ....................119 Using Intercom ......................121 Multicast Paging .......................
Page 10 User Guide for the SIP-T21(P) E2 IP Phone Appendix A - Time Zones ............169 Index ..................171...
Page 11: Overview
Overview This chapter provides the overview of the SIP-T21(P) E2 IP phone. Topics include: Hardware Component Instructions  Icon Instructions  LED Instructions  User Interfaces  Documentations  If you require additional information or assistance with your new phone, contact your system administrator.
Page 12 Secures the handset in the handset cradle when the IP phone is mounted vertically. For more information on ⑮ Hookswitch Tab Yealink Wall how to adjust the hookswitch tab, refer to Mount Quick Installation Guide for Yealink IP Phones...
Page 13 Overview Icons appearing on the LCD screen are described in the following table: Icon Description Network is unavailable The private line registers successfully Register failed Registering The shared/bridged line registers successfully Hands-free speakerphone mode Handset mode Headset mode Voice Mail Text Message Auto Answer Do Not Disturb...
Page 14 User Guide for the SIP-T21(P) E2 IP Phone Icon Description Placed Calls Missed Calls Call Forward/Forwarded Calls Recording box is full A call cannot be recorded Recording starts successfully Recording cannot be started Recording cannot be stopped The contact icon The ACD state is available The ACD state is unavailable and x...
Page 15 Overview LED Status Description The call is muted. Line key LED LED Status Description The line is seized. Solid green The line is in conversation. Fast flashing green The line receives an incoming call. Slow flashing green The call is placed on hold. The line is inactive.
Page 16: User Interfaces
User Guide for the SIP-T21(P) E2 IP Phone LED Status Description local SCA phone) hold. Solid red (for monitoring For a multi-party call, all the shared line parties SCA phone) participating in this call place the shared line conversation on hold. Line key LED (associated with a bridged line) The local BLA phone indicates the phone is involved in a BLA call, while the monitoring BLA phone indicates the phone is not involved in the BLA call.
Page 17: Web User Interface
Overview interface. The Advanced Settings option is only accessible to the administrator, and the default administrator password is “admin” (case-sensitive). For more information on customizing your phone with the available options from the phone user interface, refer Customizing Your Phone on page 25.
Page 18 User Guide for the SIP-T21(P) E2 IP Phone Options Phone User Interface Web User Interface --Dial Plan --Emergency Number --Live Dialpad --Hotline √ Basic Call Features --Recent Call In Dialing --Auto Answer √ --Auto Redial √ --Call Completion √ --ReCall √...
Page 19: Documentations
In the package English Quick Start and phone Guide On the website English/Chinese customizations Phone/Web user interface settings User Guide Basic call features On the website English/Chinese and advanced phone features Note You can also download the latest documentations online: http://support.yealink.com/documentFront/forwardToDocumentDetailPage?documentId=...
Page 20 User Guide for the SIP-T21(P) E2 IP Phone...
Page 21: Getting Started
Getting Started This chapter provides basic installation instructions and information for obtaining the best performance with the SIP-T21(P) E2 IP phone. Topics include: Packaging Contents  Phone Installation  Phone Initialization  Phone Status  Basic Network Settings  Registration ...
Page 22: Optional Accessories
User Guide for the SIP-T21(P) E2 IP Phone Phone Stand  Handset & Handset Cord  Ethernet Cable  Quick Start Guide  Check the list before installation. If you find anything missing, contact your system administrator. The following items are optional accessories for your SIP-T21(P) E2 IP phone. You need to purchase them separately if required.
Page 23  Headset  Note We recommend that you use the accessories provided or approved by Yealink. The use of unapproved third-party accessories may result in reduced performance. If your phone is already installed, proceed to Phone Initialization on page 16.
Page 24 User Guide for the SIP-T21(P) E2 IP Phone Attach the stand Note The hookswitch tab has a lip which allows the handset to stay on-hook when the IP phone is mounted vertically. Connect the handset and optional headset...
Page 25: Power Over Ethernet
Note The IP phone should be used with Yealink original power adapter (5V/600mA) only. The use of the third-party power adapter may cause the damage to the phone.
Page 26: Phone Initialization
User Guide for the SIP-T21(P) E2 IP Phone To connect the PoE for the SIP-T21P E2 IP phone Connect the Ethernet cable between the Internet port on the phone and an available port on the in-line power switch/hub. Note If in-line power is provided, you don’t need to connect the phone to the power adapter. Make sure the switch/hub is PoE-compliant.
Page 27 Getting Started Phone status (e.g., product name, hardware version, firmware version, product ID,  MAC address and device certificate status). Account status (e.g., register status of SIP accounts).  Note You can view device certificate status via phone user interface only. To view the phone status via phone user interface: Press , or press Menu->Status.
Page 28 User Guide for the SIP-T21(P) E2 IP Phone The phone status is displayed on the first page of the web user interface. If your phone cannot contact a DHCP server for any reason, you need to configure network settings manually. The IP phone can support either or both IPv4 and IPv6 addresses.
Page 29 Getting Started Press to select Static IPv4 Client and then press the Enter soft key. Enter the desired value in the IPv4, Subnet Mask, Default Gateway, IPv4 Pri.DNS and IPv4 Sec.DNS field respectively. Press the Save soft key to accept the change or the Back soft key to cancel. You can configure a static IPv6 address for the IP phone.
Page 30: Idle Screen
User Guide for the SIP-T21(P) E2 IP Phone Enter the user name and password in the corresponding fields. Press the Save soft key to accept the change or the Back soft key to cancel. Note The wrong network settings may result in inaccessibility of your phone and may also have an impact on your network performance.
Page 31 Getting Started stop to select. When the character (or numbers) you want to enter displays in the field, wait one second, and enter the next character (or numbers). The following table lists the input modes and character (or numbers) options for the keypad: Input Mode Keypad...
Page 32 User Guide for the SIP-T21(P) E2 IP Phone To enter or edit data: Do one of the following: If you want to Then you can Press a keypad key one or more times (depending what input mode you’re in) to enter the characters that is displayed on the keypad key.
Page 33 Getting Started If you want to Then you can lowercase (Abc soft key) or alphanumeric (2aB soft key) input mode, it will provide the following special characters: *.,?!\-()@/:_;+&%=<>￡$¥¤[]{}~^¡ ¿§#"|. If it is in the numeric (123 soft key) input mode, it will provide the following special characters: .*:/@[].
Page 34 User Guide for the SIP-T21(P) E2 IP Phone...
Page 35: Customizing Your Phone
Customizing Your Phone You can customize your SIP-T21(P) E2 IP phone by personally configuring certain settings, for example, contrast, language and time & date. You can add contacts to the phone’s local directory manually or from call history. You can also personalize different ring tones for different callers.
Page 36: Backlight
User Guide for the SIP-T21(P) E2 IP Phone You can configure the backlight to adjust the brightness of the LCD screen. Backlight status on the LCD screen can be configured from the following options: Always On: Backlight is on permanently. ...
Page 37: Time & Date
Customizing Your Phone Text displayed on the phone user interface will change to the selected language. To change the language for the web user interface: Click on Settings->Preference. Select the desired language from the pull-down list of Language. Click Confirm to accept the change. Text displayed on the web user interface will change to the selected language.
Page 38 User Guide for the SIP-T21(P) E2 IP Phone Enter the domain name or IP address of SNTP server in the NTP Server1 and NTP Server2 field respectively. Press , or the Switch soft key to select the desired value from the Daylight Saving field.
Page 39: Administrator Password
Customizing Your Phone There are 7 available date formats. For example, for the date format “WWW DD MMM”, “WWW” represents the abbreviation of the weekday, “DD” represents the two-digit day, and “MMM” represents the first three letters of the month. The date formats available: Date Format Example (2015-05-16)
Page 40: Phone Lock
User Guide for the SIP-T21(P) E2 IP Phone You can set the “#” key or “*” key to perform as a send key while dialing. To configure key as send 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 Disabled to disable this feature.
Page 41 Customizing Your Phone To activate the phone lock via phone user interface: Press Menu->Settings->Advanced Settings (default password: admin) ->Phone Lock. Press , or the Switch soft key to select Enabled from the Lock Enable field. Press , or the Switch soft key to select the desired type from the Lock Type field.
Page 42 User Guide for the SIP-T21(P) E2 IP Phone respectively. Press the Save soft key to accept the change or the Back soft key to cancel. Note The unlock PIN length must be within 15 digits. To unlock the phone via phone user interface: Press any locked key, the LCD screen prompts “Unlock PIN”.
Page 43: Volume
Customizing Your Phone Press the Save soft key to accept the change. Phone lock is configurable via web user interface at the path Features->Phone Lock. You can press the Volume key to adjust the ringer volume when the phone is idle. You can also press the Volume key to adjust the receiver volume of currently engaged audio devices (handset, speakerphone or headset) when the phone is in use.
Page 44 User Guide for the SIP-T21(P) E2 IP Phone To select a ring tone for the phone via phone user interface: Press Menu->Settings->Basic Settings->Sound->Ring Tones->Common. Press to select the desired ring tone. Press the Save soft key to accept the change or the Back soft key to cancel. A ring tone for the phone is configurable via web user interface at the path Settings->Preference->Ring Type.
Page 45: Directory
Customizing Your Phone In the Upload Ringtone field, click Browse to locate a ring tone (the file format must be *.wav) file from your local system. Click Upload to upload the file. Note The priority of ring tone for an incoming call on the phone is as follows: Contact ring tone (refer to Adding Contacts) >Group ring tone (refer to...
Page 46 User Guide for the SIP-T21(P) E2 IP Phone To remove a list from the Enabled column, select the desired list and then click To adjust the display order of enabled lists, select the desired list and then click The LCD screen displays the list(s) in the adjusted order. Click Confirm to accept the change.
Page 47: Local Directory
Customizing Your Phone The built-in phone directory can store the names and phone numbers of your contacts. You can store up to 1000 contacts and 48 groups in your phone's local directory. You can add new groups and contacts, edit, delete or search for a contact, or simply dial a contact number from the local directory.
Page 48 User Guide for the SIP-T21(P) E2 IP Phone To edit a group in the local directory: Press the Dir soft key. The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory (refer to Directory on page...
Page 49: Adding Contacts Manually
Customizing Your Phone The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory on page press Menu->Directory->Local Directory to enter the local directory. Select the desired group.
Page 50 User Guide for the SIP-T21(P) E2 IP Phone The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory on page press Menu->Directory->Local Directory to enter the local directory.
Page 51 Customizing Your Phone Adding Contacts from Call History To add a contact to the local directory from the call history: Press the History soft key. Press to highlight the desired entry. Press the Option soft key, and then select Add to Contacts. Press the OK soft key, and then edit the contact name.
Page 52 User Guide for the SIP-T21(P) E2 IP Phone The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory on page press Menu->Directory->Local Directory to enter the local directory.
Page 53 Customizing Your Phone key. Press to highlight the desired contact. Press the Option soft key, and then select Delete. The LCD screen prompts the following warning: Press the OK soft key to confirm the deletion or the Cancel soft key to cancel. You can also delete all contacts by pressing the Option soft key, and then select Delete All.
Page 54 User Guide for the SIP-T21(P) E2 IP Phone To search for a contact in the local directory: Press the Dir soft key. The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory...
Page 55 Customizing Your Phone The LCD screen will display search results in the adjusted order. Click Confirm to accept the change. Note Search source list in dialing is configurable via web user interface only. To search for a contact in the enabled search source lists: Pick up the handset, press the Speakerphone key or press the line key.
Page 56 User Guide for the SIP-T21(P) E2 IP Phone Click Browse to locate a contact list file (the file format must be *.xml) from your local system. Click Import XML to import the contact list. The web user interface prompts “The original contact will be covered, continue?”. Click OK to complete importing the contact list.
Page 57: Blacklist
Customizing Your Phone Select the contact information you want to import into the local directory from the pull-down list of Index. At least one item should be selected to be imported into the local directory. Click Import to complete importing the contact list. To export a contact list via web user interface: Click on Directory->Local Directory.
Page 58 User Guide for the SIP-T21(P) E2 IP Phone Enter the name and the office, mobile or other numbers in the corresponding fields. Press , or the Switch soft key to select the desired account from the Account field. If Auto is selected, the phone will use the default account when placing calls to the contact from the blacklist directory.
Page 59: Remote Phone Book
Customizing Your Phone page 37. You can add new contacts to the local directory, search for a contact, or simply dial a contact number from the remote phone book. You can configure your new phone to access up to 5 remote phone books. For the access URL of the remote phone book, contact your system administrator.
Page 60 User Guide for the SIP-T21(P) E2 IP Phone The phone then connects to the remote phone book and proceeds to load it. The contacts in the remote phone book are displayed on the LCD screen. Press the Back soft key to back to the previous screen. To place a call from the remote phone book: Press Menu->Directory->Remote Phone Book.
Page 61 Customizing Your Phone appear on the LCD screen. You can place a call from the result list. You can enable the phone to present the caller/callee identity stored in the remote phone book when receiving/placing a call. To configure incoming/outgoing call lookup and update time interval via web user interface: Click on Directory->Remote Phone Book.
Page 62 User Guide for the SIP-T21(P) E2 IP Phone Press , or the Switch soft key to select Disabled from the History Record field. Press the Save soft key to accept the change or the Back soft key to cancel. To view the call history: Press the History soft key.
Page 63 Customizing Your Phone Press to select the desired entry. Press the Delete soft key. To delete all entries from the call history list: Press the History soft key. Press to switch among All Calls, Placed Calls, Received Calls, Missed Calls and Forwarded Calls. Press the Option soft key, and then select Delete All Press the OK soft key.
Page 64 User Guide for the SIP-T21(P) E2 IP Phone Click Browse to locate the logo file from your local system. Click Upload to upload the file. custom logo, you can click Note Delete item will appear after you upload a Delete to delete the custom logo.
Page 65 Customizing Your Phone To deactivate the headset mode: Press again on the phone. The headset icon disappears from the idle screen indicates the headset mode is deactivated. You can use headset in priority when headset prior feature is enabled. This feature is especially useful for permanent or full-time headset users.
Page 66: Dss Keys
User Guide for the SIP-T21(P) E2 IP Phone You can use two headsets when enabling dual headset. To use this feature, you must physically connect headsets to the headset jack and handset jack respectively. Once the phone connects to a call, the headset connected to the headset jack will have full-duplex capabilities, while the one connected to the handset jack will only be able to listen.
Page 67 Customizing Your Phone monitored status when the line keys are assigned with particular features, such as BLF . The default key type of each line key is Line. To assign functionality to a line key via phone user interface: Press Menu->Features->DSS Keys. Select the desired DSS key, and then press the Enter soft key.
Page 68 User Guide for the SIP-T21(P) E2 IP Phone Zero Touch   Phone Lock  Directory  For the features not listed above, refer to Basic Call Features on page Advanced Phone Features on page 111. For more information, contact your system administrator. Line You can use this key feature to accept incoming calls, place active calls on hold or resume a held call.
Page 69 Customizing Your Phone Direct Pickup You can use this key feature to answer someone else’s incoming call on the phone. Type (Key Event) Dependencies: Key Type (DPickup) Account ID (the account this feature will be applied to) Label (key label displayed on the LCD screen) Value (the directed pickup code followed by the target phone number) Usage: Press the DSS key on your phone when the target phone number receives an incoming call.
Page 70 User Guide for the SIP-T21(P) E2 IP Phone Usage: Press the DSS key when the phone is idle, the phone will then enter the pre-dialing screen and display the prefix number that you specified in the Value field. You can enter the remaining digits and then dial out. Local Group You can use this key feature to quickly access a contact group in the local directory.
Page 71 Customizing Your Phone Usage: Press the DSS key to access the LDAP search screen. Enter a few continuous characters of the contact name or continuous numbers of the contact number using the keypad. Conference You can use this key feature to set up a conference call. For more information, refer to Conference on page 101.
Page 72 User Guide for the SIP-T21(P) E2 IP Phone Usage: When the transfer mode on DSS key is Blind Transfer, press the DSS key to complete  the blind transfer to the number specified in the Value field. When the transfer mode on DSS key is Attended Transfer, press the DSS key to dial ...
Page 73 Customizing Your Phone When DND is in custom mode: Press the DSS key to access the custom DND screen. You can activate or deactivate DND for one or all accounts. Note When DND is activated, the DND key LED will illuminate solid green, and the incoming calls will be rejected automatically.
Page 74 User Guide for the SIP-T21(P) E2 IP Phone Press the Next soft key. Configure the auto provision parameters in the corresponding fields. Press the OK soft key. The phone will reboot to update configurations. You can use this key feature to trigger the phone to send an HTTP GET request containing a specific URL.
Page 75 Customizing Your Phone Customize specific features for these keys. (Optional.) Enter the string that will appear on the LCD screen in the Label field. Label is configurable only when customizing SoftKey (1-4). Click Confirm to accept the change. You can click Reset to default to reset custom settings to defaults. Then you can press the keys on the phone to perform the features you configured.
Page 76 User Guide for the SIP-T21(P) E2 IP Phone To register an account via phone user interface: Press Menu->Settings->Advanced Settings (default password: admin) ->Accounts. Select the desired account and then press the Enter soft key. Select Enabled from the Active Line field. Enter the desired value in Label, Display Name, Register Name, User Name, Password and SIP Server1/2 field respectively.
Page 77: Dial Plan
Customizing Your Phone You can configure multiple line keys to associate with an account. This enhances call visualization and simplifies call handling. If this is the case, the LCD screen will resemble the following figure: Incoming calls to this account will be distributed evenly among the available line keys. Outgoing calls will be distributed similarly.
Page 78 User Guide for the SIP-T21(P) E2 IP Phone Numeric ranges are allowed within the brackets: Digit “-” Digit. Example: “[5-7]” would match the number”5”, ”6”or ”7”. The square brackets "[]" can be used as a placeholder for a single character which matches any of a set of characters. Example: "91[5-7]1234"...
Page 79 Customizing Your Phone Enter the desired line ID in the Account field or leave it blank. Click Add to add the replace rule. When you enter the number “1” using the keypad and then press the Send soft key, the phone will dial out “1234” instead. Note The valid values of Account field can be one or two digits between 1 and 2.
Page 80 User Guide for the SIP-T21(P) E2 IP Phone You can configure one or more dial-now rules (up to 100) on your phone. When the dialed number matches the dial-now string, the number will be dialed out automatically. For example, a dial-now rule is configured as "1xx", any entered three-digit string beginning with 1 will then be dialed out automatically on the phone.
Page 81 Customizing Your Phone Enter the time between 0 and 14 (seconds) in the Time-Out for Dial-Now Rule field. The default value is “1”. Click Confirm to accept the change. Note Delay time for dial-now rule is configurable via web user interface only. Area codes are also known as Numbering Plan Areas (NPAs).
Page 82 User Guide for the SIP-T21(P) E2 IP Phone For more information on the valid values for the Account field, refer to Replace Rule on page 68. Click Confirm to accept the change. Note The default value of minimum and maximum length is 1 and 15 respectively. Area code is configurable via web user interface only.
Page 83: Emergency Number
Customizing Your Phone For more information on the valid values for the Account field, refer to Replace Rule on page 68. Click Confirm to add the block out number. Note Block out number is configurable via web user interface only. Public telephone networks in countries around the world have a single emergency telephone number (emergency services number), that allows a caller to contact local emergency services for assistance when necessary.
Page 84: Live Dialpad
User Guide for the SIP-T21(P) E2 IP Phone For multiple numbers, enter a comma between every two emergency numbers. The default emergency numbers are 112, 911, 110. Click Confirm to accept the change. Note Emergency number is configurable via web user interface only. You can enable live dialpad feature on the SIP-T21(P) E2 IP phone, which enables the IP phone to automatically dial out a phone number without pressing the send key.
Page 85: Hotline
Customizing Your Phone Click Confirm to accept the change. Note Live dialpad is configurable via web user interface only. You can dial a hotline number immediately upon lifting the handset, pressing the Speakerphone key or the line key. You can also configure a delay, and then the phone will dial out the hotline number automatically after the designated period of time.
Page 86 User Guide for the SIP-T21(P) E2 IP Phone...
Page 87: Basic Call Features
Basic Call Features The SIP-T21(P) E2 IP phone is designed to be easily used like a regular phone on a public switched telephone network (PSTN). You can place calls, answer calls, transfer a call to someone else, or conduct a conference call. This chapter provides basic operating instructions for the SIP-T21(P) E2 IP phone.
Page 88 User Guide for the SIP-T21(P) E2 IP Phone Using the headset  You can also dial the number first, and then choose the way you want to speak to the other party. You can also search and dial a contact from call history, local directory or remote phone book.
Page 89 Basic Call Features To place a call using the headset: Do one of the following: With the optional headset connected, press to activate the headset mode. Press the line key to obtain a dial tone. Enter the desired number using the keypad. Press , or the Send soft key.
Page 90 User Guide for the SIP-T21(P) E2 IP Phone When you are not in another call, you can answer a call in one of three ways: Using the handset  Using the speakerphone  Using the headset  Note You can reject incoming calls by pressing the Reject soft key or the X key. You can also activate Do Not Disturb mode to ignore all incoming calls without ring on your phone.
Page 91: Recent Call In Dialing
Basic Call Features The incoming call is answered and the original call is placed on hold. Press to access the new call. Press or the Answer soft key. The incoming call is answered and the original call is placed on hold. To end a call: Do one of the following: If you are using the handset, press the EndCall soft key or hang up the handset.
Page 92 User Guide for the SIP-T21(P) E2 IP Phone Select Enabled from the pull-down list of Recent Call In Dialing. Click Confirm to accept the change. Recent call in dialing is configurable via web user interface only. Note To view placed calls list when the phone is on the pre-dialing screen: Pick up the handset, press the Speakerphone key or press the line key.
Page 93: Auto Answer
Basic Call Features You can use auto answer feature to automatically answer an incoming call on a line. Auto answer is configurable on a per-line basis. To configure auto answer via phone user interface: Press Menu->Features->Auto Answer. Press , or the Switch soft key to select the desired account from the Line ID field.
Page 94 User Guide for the SIP-T21(P) E2 IP Phone Press , or the Switch soft key to select Enabled from the Auto Redial field. Enter the desired time (in seconds) in the Redial Interval field. The default value is “10”. Enter the desired number of redial attempts in the Redial Times field. The default value is “10”.
Page 95: Call Completion
Basic Call Features You can use call completion to notify the caller who failed to reach a desired party when the party becomes available to receive a call. To configure call completion via phone user interface: Press Menu->Features->Call Completion. Press , or the Switch soft key to select Enabled from the Call Completion field.
Page 96: Recall
User Guide for the SIP-T21(P) E2 IP Phone Press the OK soft key to redial the number. Note Call completion is not available on all servers. For more information, contact your system administrator. You can press a recall key to place a call back to the last incoming call. To configure a recall key via phone user interface: Press Menu->Features->DSS Keys.
Page 97 Basic Call Features To un-mute a call: Press again to un-mute the call. You can place an active call on hold. Only one active call can be in progress at any time. Other calls can be made and received while placing the original call on hold. When you place a call on hold, your IP PBX may play music to the other party while waiting.
Page 98 User Guide for the SIP-T21(P) E2 IP Phone You can use DND to reject incoming calls automatically on the phone. The prompt message "n New Missed Call(s)" ("n" indicates the number of missed calls) will appear on the LCD screen, and callers will receive a busy message. All calls you receive while DND is enabled are logged to your missed calls list.
Page 99 Basic Call Features In the DND block, mark the desired radio box in the Mode field. Click Confirm to accept the change. Note DND mode is configurable via web user interface only. To activate DND in phone mode: Press the DND soft key when the phone is idle. icon on the status bar indicates that DND is enabled.
Page 100 User Guide for the SIP-T21(P) E2 IP Phone Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n" indicates the number of missed calls. e.g., 1 New Missed Call(s)) will appear on the LCD screen. Note When DND and busy forward are enabled in phone mode, calls will be sent to the configured destination number.
Page 101: Call Forward
Basic Call Features Incoming calls on the specific line will be rejected automatically, and the LCD screen will prompt "n New Missed Call(s)" ("n" indicates the number of missed calls. e.g., 1 New Missed Call(s)). Note When DND and busy forward are both enabled for a specific account, calls to the specific account will be sent to the configured destination number.
Page 102 User Guide for the SIP-T21(P) E2 IP Phone For multiple numbers, enter a comma between every two numbers. Click Confirm to accept the change. When DND is enabled on the phone, the phone can still receive incoming calls from the numbers specified in the DND Authorized Numbers field. Note DND authorized number is configurable via web user interface only.
Page 103 Basic Call Features You can enable/disable call forward for the phone system, or you can customize call forward for each or all accounts. Two call forward modes: Phone (default): Call forward is effective for the phone system.  Custom: Call forward can be configured for each or all accounts. ...
Page 104 User Guide for the SIP-T21(P) E2 IP Phone Depending on your selection: a) If you select Always Forward: 1) Press , or the Switch soft key to select Enabled from the Always Forward field. 2) Enter the destination number you want to forward all incoming calls to in the Forward to field.
Page 105 Basic Call Features before forwarding from the After Ring Time field. The default ring time is 12 seconds. 4) (Optional.) Enter the no answer forward on code or off code respectively in the On Code or Off Code field. Press the Save soft key to accept the change or the Back soft key to cancel. icon on the status bar indicates that the call forward is enabled.
Page 106 User Guide for the SIP-T21(P) E2 IP Phone The LCD screen prompts “Copy to all lines?”. 3) Press the OK soft key to accept the change or the Cancel soft key to cancel. b) If you select Busy Forward, you can enable it for a specific account. 1) Press , or the Switch soft key to select Enabled from the Busy Forward field.
Page 107 Basic Call Features c) If you select No Answer Forward, you can enable it for a specific account. 1) Press , or the Switch soft key to select Enabled from the No Answer Forward field. 2) Enter the destination number you want to forward all unanswered incoming calls to in the Forward to field.
Page 108 User Guide for the SIP-T21(P) E2 IP Phone Call forward is configurable via web user interface at the path Features->Forward & DND. Note You can also enter the SIP URI or IP address in the Forward to field. For more information on using the SIP URI or IP address, refer to Placing Calls on page 77.
Page 109 Basic Call Features Press to select the desired forwarding type and then press the Enter soft key. Press , or the Switch soft key to select Disabled to disable the call forward. Press the Save soft key to accept the change. To disable call forward in custom mode for a specific account: Press Menu->Features->Call Forward or press when the phone is idle.
Page 110 User Guide for the SIP-T21(P) E2 IP Phone To perform a blind transfer: Press or the Tran soft key during a call. Enter the number you want to transfer the call to. Press or the Tran soft key to complete call transfer. Then the call is connected to the number to which you are transferring.
Page 111: Call Waiting
Basic Call Features After the party answers the call, press or the Tran soft key to complete the transfer. If you are using a handset, the transfer can be completed by hanging up the handset. You can cancel the transfer before the call is connected by pressing the Cancel soft key. You can enable or disable call waiting on the phone.
Page 112: Local Conference
User Guide for the SIP-T21(P) E2 IP Phone The SIP-T21(P) E2 IP phone supports up to 3 parties (including yourself) in a conference call. This is the default method of conference called Local Conference. To set up a local conference call: Place a call to the first party.
Page 113: Network Conference
Basic Call Features but they cannot hear you. Press the EndCall soft key to drop the conference call. You can use network conference feature on the SIP-T21(P) E2 IP phone to conduct a conference with multiple participants. This feature allows you to perform the following: Join two calls together into a conference call.
Page 114: Call Park
User Guide for the SIP-T21(P) E2 IP Phone The active call is placed on hold. Enter the number of the second party and then press , or the Send soft key. When the second party answers the call, press the Conf soft key to add the second party to the conference.
Page 115: Call Pickup
Basic Call Features Enter the call park code in the Value field. Press the Save soft key to accept the change or the Back soft key to cancel. Call park key is configurable via web user interface at the path DSSKey->Line Key. To use call park: User on phone A places a call to phone B.
Page 116 User Guide for the SIP-T21(P) E2 IP Phone Enter the directed call pickup code in the Directed Call Pickup Code field. Click Confirm to accept the change. To configure the directed call pickup code on a per-line basis via web user interface: Click on Account->Advanced.
Page 117: Group Call Pickup
Basic Call Features The DPickup soft key appears on the LCD screen. Press the DPickup soft key on your phone when the target phone receives an incoming call. Enter the phone number which is receiving an incoming call. Press the DPickup soft key again. The call is answered on your phone.
Page 118 User Guide for the SIP-T21(P) E2 IP Phone Enter the group call pickup code in the Group Call Pickup Code field. Click Confirm to accept the change. To pick up a call in the group: Pick up the handset, press the Speakerphone key or press the line key. The GPickup soft key appears on the LCD screen.
Page 119: Anonymous Call
Basic Call Features You can use anonymous call to block your identify and phone number from appearing to the called party when you call someone. For example, you want to call to consult some services, but don’t want to be harassed. Anonymous call is configurable on a per-line basis.
Page 120: Anonymous Call Rejection
User Guide for the SIP-T21(P) E2 IP Phone The LCD screen of phone B prompts an incoming call from anonymity. You can use anonymous call rejection to reject incoming calls from anonymous callers. Anonymous call rejection automatically rejects incoming calls from callers who deliberately block their identities and numbers from being displayed.
Page 121: Advanced Phone Features
Advanced Phone Features This chapter provides operating instructions for the advanced features of the SIP-T21(P) E2 IP phone. Topics include: Busy Lamp Field (BLF)  BLF List  Call Recording  Hot Desking  Intercom  Multicast Paging  Music on Hold ...
Page 122 User Guide for the SIP-T21(P) E2 IP Phone Press , or the Switch soft key to select BLF from the Type field. Press , or the Switch soft key to select the desired line from the Account ID field. (Optional.) Enter the string that will appear on the LCD screen in the Label field. Enter the phone number or extension you want to monitor in the Value field.
Page 123: Blf List
Advanced Phone Features When the monitored line receives an incoming call, the following occurs on your phone: The phone plays a warning tone (if enabled).  The BLF key LED flashes red.  The caller ID appears on the LCD screen (if enabled). ...
Page 124 User Guide for the SIP-T21(P) E2 IP Phone phone will place a call to the monitored user instead of picking up the incoming call of the monitored user when you press the BLF List key. When there is a conversation on the monitored user, press the BLF list key to barge ...
Page 125: Call Recording
Advanced Phone Features According to the response message from the server, the IP phone will automatically configure the BLF List keys beginning from the first unused Line key. Once any Line key is seized, the IP phone will skip to configure the next Line key. You can receive a visual or/and an audio alert (if enabled) on your phone when the monitored user receives an incoming call.
Page 126 User Guide for the SIP-T21(P) E2 IP Phone To configure a URL record key via phone user interface: Press Menu->Features->DSS Keys. Select the desired DSS key. Press , or the Switch soft key to select URL Record from the Type field. (Optional.) Enter the string that will appear on the LCD screen in the Label field.
Page 127: Hot Desking
Advanced Phone Features Circumstance Icons on the LCD screen A recording cannot be started appears for 1 second appears for 1 second, then goes back A recording cannot be stopped appears for 1 second The recording box is full appears for 1 second The call cannot be recorded You can listen to the recordings stored on your server system.
Page 128: Intercom
User Guide for the SIP-T21(P) E2 IP Phone (Optional.) Enter the string that will appear on the LCD screen in the Label field. Press the Save soft key to accept the change or the Back soft key to cancel. Hot desking key is configurable via web user interface at the path DSSKey->Line Key. To use hot desking: Press the hot desking key when the phone is idle.
Page 129: Incoming Intercom Calls
Advanced Phone Features Select the desired DSS key. Press , or the Switch soft key to select Intercom from the Type field. Select the desired line from the Account ID field. (Optional.) Enter the string that will appear on the LCD screen in the Label field. Enter the target extension number in the Value field.
Page 130 User Guide for the SIP-T21(P) E2 IP Phone Accept Intercom You can enable or disable the phone to answer an incoming intercom call. If Accept Intercom is enabled, the phone will automatically answer an incoming intercom call. If Accept Intercom is disabled, the phone will reject incoming intercom calls and send a busy message to the caller.
Page 131: Multicast Paging
Advanced Phone Features Press the Save soft key to accept the change or the Back soft key to cancel. These specific parameters are configurable via web user interface at the path Features->Intercom. To place an intercom call when the target phone is idle: Press the intercom key when the phone is idle.
Page 132 User Guide for the SIP-T21(P) E2 IP Phone The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255. Press the Save soft key to accept the change or the Back soft key to cancel. Multicast paging key is configurable via web user interface at the path DSSKey->Line Key.
Page 133 Advanced Phone Features The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255. Enter the group name in the Label field. Press the Save soft key to accept the change. Repeat steps 2 to 6, you can add more paging groups. Paging list is configurable via web user interface at the path: Directory->Multicast IP.
Page 134 User Guide for the SIP-T21(P) E2 IP Phone The default codec is G722. Click Confirm to accept the change. Note If G722 codec is used for multicast paging, the LCD screen will display the icon indicate that it is providing high definition voice. Default codec for multicast paging is configurable via web user interface only.
Page 135 Advanced Phone Features Paging Priority Active The paging priority active parameter decides how the phone handles incoming multicast paging calls when there is already a multicast paging call on the phone. If enabled, the phone will ignore incoming multicast paging calls with lower priorities, otherwise, the phone will answer incoming multicast paging calls automatically and place the previous multicast paging call on hold.
Page 136 User Guide for the SIP-T21(P) E2 IP Phone Both the sender’s and receiver’s phones play a warning tone and the receiver automatically answers the multicast RTP session in the speakerphone mode. The multicast paging key LED illuminates solid green. The following figure shows a multicast RTP session on the phone: To place the current multicast RTP session on hold, press the Hold soft key.
Page 137: Music On Hold
Advanced Phone Features Music on hold (MoH) is the business practice of playing recorded music to fill the silence that would be heard by the party placed on hold. To use this feature, you should specify a SIP URI pointing to a Music on Hold Server account. When a call is placed on hold, the phone will send a SIP INVITE message to the Music on Hold Server account.
Page 138 User Guide for the SIP-T21(P) E2 IP Phone specific person but who require assistance from any of multiple persons at the earliest opportunity. ACD on the SIP-T21(P) E2 IP phone allows the ACD system to distribute large volumes of incoming calls to the registered ACD users. To use this feature, you should configure an ACD key in advance.
Page 139 Advanced Phone Features After logging in, you are ready to receive calls from the . You can press the ACD system ACD key to show your current ACD user status. You can press the Avail/Unavail soft key to change your ACD user status. ACD user status synchronizes on both IP phone and ACD system.
Page 140 User Guide for the SIP-T21(P) E2 IP Phone You can configure a primary account on the IP phone and other alternate accounts on the other IP phones. In a SCA Hybrid Key System scenario, you can automatically assign multiple DSS keys with Line type for a registered shared line on the phone (If auto linekeys feature is enabled).
Page 141 Advanced Phone Features Auto LineKeys is you can automatically assign multiple DSS keys with enabled, Line type for a registered shared line on the phone. Click Confirm to accept the change. To configure the shared line settings and the number of line key on phone A via web user interface: Register the primary account 4603.
Page 142 User Guide for the SIP-T21(P) E2 IP Phone Click on Advanced, and then select Shared Call Appearance from the pull-down list of Shared Line. Enter the desired number in the Number of line key field. This field appears only if Auto Linekeys is enabled. The default value is 1.
Page 143 Advanced Phone Features (Enter the primary account 4603 in the Register Name field.) Click on Advanced, and then select Shared Call Appearance from the pull-down list of Shared Line. Enter the desired number in the Number of line key field. This field appears only if Auto Linekeys is enabled.
Page 144 User Guide for the SIP-T21(P) E2 IP Phone The default value is 1. In this example, the value is set to 2. Click Confirm to accept the change. The phone B will automatically configure the line keys from the first unused DSS key, according to the configured number in the Number of line key field.
Page 145 Advanced Phone Features Select Private Hold from the Unselected Softkeys column and then click The Private Hold appears in the Selected Softkeys column. Click Confirm to accept the change. To configure a private hold key via phone user interface: Press Menu->Features->DSS Keys. Select the desired DSS key.
Page 146 User Guide for the SIP-T21(P) E2 IP Phone Enter the call pull feature access code (e.g., *11) in the Call Pull Feature Access Code field. Click Confirm to accept the change. The phone will dial out “*11” automatically when you press the CallPull soft key. This section provides you with detailed information on using the SIP-T21(P) E2 IP phone in a SCA Hybrid Key System scenario.
Page 147 Advanced Phone Features To place a call on the shared line: Do one of following: Enter the desired number using the keypad when the phone is idle. Press , or the Send soft key. The phone will dial the entered number using the first line key. Press the line key when the phone is idle to enter the pre-dialing screen.
Page 148 You can answer the incoming call on either phone A or phone B. The LCD screen of phone A displays the information of the incoming call (e.g., ”Incoming call: 4604 Yealink”). Note Make sure call waiting feature is enabled on phone A. For more information, refer to...
Page 149 Advanced Phone Features To place a call on public hold: Press the Hold soft key on phone A when party A and party C are talking. The line key LEDs on phone A slow flash green and phone B slow flash red when the shared line call is placed on hold.
Page 150 User Guide for the SIP-T21(P) E2 IP Phone Long press the desired line key. The Cancel, CallPull, NewCall and Retrieve soft keys appear on the LCD screen. Press the Retrieve soft key to retrieve the call. The conversation is established between phone B and phone C, phone A disconnects the call.
Page 151 Advanced Phone Features key, the conference call is ended. You can also press the line key with the solid red LED indicator on phone B to set up a conference call with the other parties in the active call. If phone A has more than one call, do the following: Long press the desired line key on phone B.
Page 152 User Guide for the SIP-T21(P) E2 IP Phone To retrieve a call from another shared phone: If there is an active call between phone A and phone C, do the following: Long press the desired line key on phone B. The Cancel, CallPull, NewCall and Barge In soft keys appear on the LCD screen of phone B.
Page 153 Advanced Phone Features Any IP phone can be used to originate or receive calls on the bridged line. An incoming call to the BLA number can be presented to multiple phones in the group simultaneously. The incoming call can be answered on any IP phone of the group but not all. You can share a BLA number on two or more phones.
Page 154 User Guide for the SIP-T21(P) E2 IP Phone To register an account and configure BLA feature on phone A via web user interface: Register the account 14019833020. Click on Advanced, and then select Draft BLA from the pull-down list of Shared Line.
Page 155 Advanced Phone Features Click Confirm to accept the change. To register an account and configure BLA feature on phone B via web user interface: Register the account 10462190020. Click on Advanced, and then select Draft BLA from the pull-down list of Shared Line.
Page 156 User Guide for the SIP-T21(P) E2 IP Phone Enter the desired number in the BLA Number field. Click Confirm to accept the change. This section provides you with detailed information on using the SIP-T21(P) E2 IP phone in a BLA scenario. In a BLA scenario, the status of the line key LED which associates with a bridged line will change.
Page 157 Advanced Phone Features The phone will dial the entered number. Press the line key when the phone is idle to enter the pre-dialing screen. Enter the desired number using the keypad and then press , or the Send soft key. The phone will dial the entered number.
Page 158: Messages
User Guide for the SIP-T21(P) E2 IP Phone To place a call on hold: Press the Hold soft key on phone A when party A and party C are talking. The line key LEDs on phone A slow flash green and phone B slow flash red when the bridged line call is placed on hold.
Page 159 Advanced Phone Features You can store text messages in your phone’s Inbox, Sentbox, Outbox or Draftbox. Each of the boxes can store up to 100 text messages. If the number of the text messages in one box is more than 100, the phone will directly delete the oldest text message in the box.
Page 160 User Guide for the SIP-T21(P) E2 IP Phone To reply a text message: Press Menu->Message->Text Message->Inbox. Select the desired message and then press the Reply soft key. Compose the new text message. You can press the abc soft key to change the input mode.
Page 161: Voice Mail
Advanced Phone Features You can leave voice mails for someone else using the SIP-T21(P) E2 IP phone. You can also listen to voice mails that are stored in a voice mailbox. When receiving a new voice mail, the phone will play a warning tone. The power indicator LED will slow flash red, and the LCD screen will prompt “n New Voice Mail(s)”...
Page 162: Message Waiting Indicator (Mwi)
User Guide for the SIP-T21(P) E2 IP Phone To listen to voice mails: When the LCD screen prompts that the phone receives a new voice mail and the power indicator LED slow flashes red, you can press or the Connect soft key to dial out the voice mail access code.
Page 163 Advanced Phone Features The MWI subscription parameters you need to know: Options Description Subscribe for MWI Enable or disable a subscription for MWI service. Period of MWI subscription. The IP phone sends a MWI Subscription Period refresh SUBSCRIBE request before initial SUBSCRIBE expiration.
Page 164 User Guide for the SIP-T21(P) E2 IP Phone The IP phone will subscribe to the account number for MWI service by default. To enable subscribe MWI to voice mail via web user interface: Click on Account->Advanced. Select the desired account from the pull-down list of Account. Select Enabled from the pull-down list of Subscribe for MWI.
Page 165: Troubleshooting
Troubleshooting This chapter provides general troubleshooting information to help you solve the problems you might encounter when using your SIP-T21(P) E2 IP phone. If you require additional information or assistance with your new phone, contact your system administrator. How can I find the basic information of the IP phone? Press the OK key when the IP phone is idle to check the basic information of the IP phone, such as IP address and firmware version.
Page 166 User Guide for the SIP-T21(P) E2 IP Phone If your SIP-T21P E2 IP phone is powered from PoE, ensure you use a PoE-compliant  switch or hub. Why does the phone display "Network unavailable"? Ensure that the Ethernet cable is plugged into the Internet port on the phone and ...
Page 167: Phone Installation On
Troubleshooting Enter the new user password in the New Password field and Confirm Password field. Click Confirm to accept the change. You can also contact your system administrator for help. Note If you are logging into the web user interface of the phone with user credentials, you need to enter the current user password in the Old Password field.
Page 168 User Guide for the SIP-T21(P) E2 IP Phone Check that the headset mode is activated. Refer to Headset Use on page 54.  Check that the headset volume is adjusted to an appropriate level. Refer to Volume  on page 33. Why can’t I get a dial tone? Check for any loose connections and that the phone has been installed properly.
Page 169 Troubleshooting Enter the desired time in the Play Hold Tone Delay field. Click Confirm to accept the change. How to make a call using SRTP? You can enable SRTP to encrypt the audio stream(s) of phone calls. The parties participating in the call should enable SRTP on a per-line basis. To enable SRTP on a per-line basis via web user interface: Click on Account->Advanced.
Page 170 User Guide for the SIP-T21(P) E2 IP Phone Select the desired value (Optional or Compulsory) from the pull-down list of RTP Encryption(SRTP). Click Confirm to accept the change. Note SRTP is not available on all servers. Contact your system administrator for more information.
Page 171 Troubleshooting Click Export to open file download window, and then save the file to your local system. How to export system log? We may need you to provide a system log to help analyze your problem. To export the system log to a local PC via web user interface: Click on Settings->Configuration.
Page 172 User Guide for the SIP-T21(P) E2 IP Phone Click Export to open the file download window, and then save the file to your local system. You can also export the system log to a syslog server. Contact your system administrator for more information.
Page 173 Troubleshooting Click Export to open file download window, and then save diagnostic files to your local system. Note If the issue cannot be reproduced, just directly click Export to export all diagnostic files. How to reboot the phone? To reboot the phone via web user interface: Click on Settings->Upgrade.
Page 174 User Guide for the SIP-T21(P) E2 IP Phone How to upgrade firmware? To upgrade firmware via web user interface: Click on Settings->Upgrade. Click Browse to locate the required firmware from your local system. Click Upgrade to upgrade the firmware. The web user interface prompts “Firmware of the SIP Phone will be updated. It will take 5 minutes to complete.
Page 175 Troubleshooting The LCD screen prompts “Resetting to factory,please wait…”. The LCD screen prompts “Welcome Initializing…please wait”. The phone will be reset to factory settings sucessfully after startup. Note Reset of your phone may take a few minutes. Do not power off until the phone has started up successfully.
Page 176 User Guide for the SIP-T21(P) E2 IP Phone...
Page 177: Regulatory Notices
Without prior written consent, no organization or individual is permitted to  make any change to the structure or the safety design of the device. Yealink is under no circumstance liable to consequences or legal issues caused by such changes.
Page 178 User Guide for the SIP-T21(P) E2 IP Phone Please place no heavy objects on the device in case of damage and  deformation caused by the heavy load. Keep at least 10 cm between the device and the closest object for heat ...
Page 179 Appendix A-Time Zones Time Zone Time Zone Name Samoa United States-Hawaii-Aleutian, United States-Alaska-Aleutian -9:30 French Polynesia United States-Alaska Time Canada(Vancouver,Whitehorse), Mexico(Tijuana,Mexicali), United States-Pacific Time Canada(Edmonton,Calgary), Mexico(Mazatlan,Chihuahua), United States-MST no DST, United States-Mountain Time Canada-Manitoba(Winnipeg), Chile(Easter Islands), Mexico(Mexico City,Acapulco), United States-Central Time Bahamas(Nassau), Canada(Montreal,Ottawa,Quebec), Cuba(Havana), United States-Eastern Time -4:30...
Page 180 User Guide for the SIP-T21(P) E2 IP Phone Time Zone Time Zone Name +9:30 Australia(Adelaide), Australia(Darwin) Australia(Brisbane), Australia(Hobart), Australia(Sydney,Melboume,Canberra), Russia(Vladivostok) +10:30 Australia(Lord Howe Islands) New Caledonia(Noumea), Russia(Srednekolymsk Time) +11:30 Norfolk Island New Zealand(Wellington,Auckland), Russia(Kamchatka Time) +12:45 New Zealand(Chatham Islands) Tonga(Nukualofa) +13:30 Chatham Islands Kiribati...
Page 181: Configuring Bla Feature On The Ip Phone
Index Contact Management Contrast About This Guide Copyright Accessing the Remote Phone Book Customizing Your Phone Account Management Account Registration Adding Contacts Adding Groups Declaration of Conformity Administrator password Deleting Contacts Advanced Phone Features Deleting Groups Anonymous Call Dial-now Anonymous Call Rejection Dial Plan Answering Calls Directory...
Page 182: Using Bla Feature On The Ip Phone
User Guide for the SIP-T21(P) E2 IP Phone Safety Instructions Key as Send Search Source List in Dialing Searching for Contacts Sending RTP Stream Service Agreements Language Shared Call Appearance (SCA) LED Instructions Short Message Service (SMS) Limitation of Liability Summary of Changes Line Keys System Customizations...

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Yealink SIP-T21 E2 User Manual

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Overview

Getting Started

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Basic Call Features

Advanced Phone Features

Troubleshooting

Regulatory Notices

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