Page 2 Copyright © 2014 YEALINK NETWORK TECHNOLOGY CO., LTD. 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 SIP-T48G 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 online: http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.
Page 5: About This Guide
About This Guide Thank you for choosing the SIP-T48G IP phone, an ultra-elegant gigabit IP phone which is exquisitely designed to provide business telephony features, such as Call Hold, Call Transfer, Busy Lamp Field, Call Recording, Multicast Paging and Conference over an IP network.
Page 6 User Guide for the SIP-T48G IP Phone Appendix A - Time Zones on page  The following sections are new: BLF List on page  Major updates have occurred to the following sections: LED Instructions on page  Ring Tones 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 73, Guide Version 73.40 ............v Changes for Release 73, Guide Version 73.16 ............vi Changes for Release 72, Guide Version 72.10 ............vi Table of Contents ..............
Page 8 User Guide for the SIP-T48G IP Phone Language ........................28 Time & Date ......................... 29 Administrator Password ..................... 32 Key as Send ........................ 33 Audio Settings ........................ 33 Volume ......................... 33 Ring Tones ........................34 Contact Management ....................36 Directory ........................37 Local Directory ......................
Page 9: Table Of Contents
Table of Contents Anonymous Call Rejection ................... 135 Advanced Phone Features ............137 Busy Lamp Field (BLF)....................137 BLF List .......................... 140 Call Recording ......................142 Hot Desking ........................144 Intercom ........................146 Outgoing Intercom Calls ..................147 Incoming Intercom Calls ................... 147 Multicast Paging ......................
Page 10 User Guide for the SIP-T48G IP Phone...
Page 11: Overview
 LED Instructions  User Interfaces  Documentations  If you require additional information or assistance with your new phone, contact your system administrator. The main hardware components of the SIP-T48G IP phone are the touch screen and the keypad.
Page 12 User Guide for the SIP-T48G IP Phone Hardware component instructions of the SIP-T48G IP phone are: Item Description ① Power Indicator LED Indicates phone power and some feature statuses. The screen is touch-sensitive. Tap to select and highlight screen items.
Page 13 Overview Icons appearing on the touch screen are described in the following table: Icons Description Network is unavailable Registered successfully Register failed Registering (Flashing) Hands-free speakerphone mode Handset mode Headset mode Multi-lingual lowercase letters input mode Multi-lingual uppercase letters input mode Alphanumeric input mode Numeric input mode Multi-lingual uppercase and lowercase letters...
Page 14 User Guide for the SIP-T48G IP Phone Icons Description Received Calls Placed Calls Missed Calls Forwarded Calls Recording box is full A call cannot be recorded Recording starts successfully Recording cannot be started Recording cannot be stopped Bluetooth mode is on...
Page 15 Overview Two ways to customize configurations of your SIP-T48G IP phone: The user interface on the IP phone.  The user interface in a web browser on your PC.  The hardware components keypad and touch screen constitute the phone user interface, which allows the user to execute all call operation tasks and basic configuration changes directly on the phone.
Page 16: Anonymous Call Rejection
User Guide for the SIP-T48G IP Phone Options Phone User Interface Web User Interface --Wallpaper √ --Backlight √ --Contrast √ --Language √ --Time & Date √ --Administrator Password √ --Key as Send √ --Ring Tones √ --Contact Management × --Directory ×...
Page 17: Phone User Interface
--NAT Status √ Note The table above lists most of the feature options. Please refer to the relevant sections for more information. The following table shows documentations available for the SIP-T48G IP phone. Name Contents Where found Language Basic call features...
Page 18 User Guide for the SIP-T48G IP Phone...
Page 19: Getting Started
Getting Started This chapter provides the following basic installation instructions and information for obtaining the best performance with the SIP-T48G IP phone. Topics include: Packaging Contents  Phone Installation  Phone Initialization  Registration  Touch Screen Display  Navigating Menus and Fields ...
Page 20 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-T48G IP phone. You need to purchase them separately if required.
Page 21 Getting Started Wall Mount Bracket  Power Adapter  Headset  Wireless Headset Adapter EHS36  Bluetooth USB Dongle BT40 ...
Page 22 The top two slots are plugged up by silica gel. You need to pull out silica gel before attaching the wall mount bracket. For more information on how to mount your phone to a Yealink Wall Mount Quick Installation Guide for T4X IP Phones wall, refer to...
Page 23 The EXT port can also be used to connect an expansion module EXP40. For more information on how to use the EHS36, EXP40 and Bluetooth USB Dongle BT40, refer to Yealink EHS36 User Guide, Yealink EXP40 User Guide and Yealink Bluetooth USB Dongle BT40 User Guide.
Page 24 User Guide for the SIP-T48G IP Phone Power over Ethernet With the included or a regular Ethernet cable, the SIP-T48G IP phone can be powered from a PoE-compliant switch or hub. To connect the PoE: Connect the Ethernet cable between the Internet port on the phone and an available port on the in-line power switch/hub.
Page 25 The SIP-T48G IP phone supports up to 16 accounts. If your phone is not registered, you may have to register it.
Page 26 User Guide for the SIP-T48G IP Phone Name Description The idle screen displays line keys 1-11. The line keys 1-6 on the left can be used to activate up to six lines. Line Keys (1-11) Various features can be assigned to line keys.
Page 27 Getting Started Configuration Screen Display Name Description Screen Title Area Displays the title of the current menu screen. Displays various operation options for Operation Option Area different menu screens. Displays menu items. Menu Tree Area Tap the desired menu item to enter the corresponding feature configuration screen.
Page 28 User Guide for the SIP-T48G IP Phone To operate your phone, follow these tips: If you want to Action Enter the main menu. Return to the idle screen. Go back to the previous menu. or press Tap the item. Select an item.
Page 29 Getting Started If you want to Action To enter “B”, press twice quickly. To enter “C”, press three times quickly. Press the keypad key key: If it is the uppercase (ABC soft key) or lowercase (abc soft key) input mode, it will provide the space character.
Page 30 User Guide for the SIP-T48G IP Phone Phone status (e.g., device model, hardware version, product ID and device  certificate status) Account status (e.g., register status of SIP accounts)  Note You can view the device certificate status via phone user interface only.
Page 31 Getting Started Click Confirm to login. 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 32 User Guide for the SIP-T48G IP Phone Tap the Save soft key to accept the change or to cancel. To configure a static IPv4 address via phone user interface: ->Advanced (default password: admin) ->Network->WAN Port->IPv4. Tap the gray box of the Type field.
Page 33 Getting Started If you are using an xDSL modem for IPv4 network connection, you can connect your phone to the Internet via PPPoE mode. Set the WAN port as a PPPoE port. The PPPoE port will perform a PPP negotiation to obtain the IP address. Contact your system administrator for the PPPoE user name and password.
Page 34 User Guide for the SIP-T48G IP Phone...
Page 35: Customizing Your Phone
If you require additional information or assistance with your new phone, contact your system administrator. You can customize the wallpaper of the SIP-T48G IP phone, and can change the wallpaper image via phone user interface or web user interface. You can also upload custom wallpaper images via web user interface.
Page 36 The custom wallpaper appears in the pull-down list of Wallpaper. Note The SIP-T48G IP phone screen size is 800*480 pixels. If the size of the custom wallpaper doesn’t meet the IP phone screen size, the wallpaper will be stretched or/and zoomed...
Page 37: Backlight
Backlight is configurable via web user interface at the path Settings->Preference. You can configure the contrast of the expansion module EXP40 connected to the SIP-T48G IP phone to a comfortable level on the phone. Ensure that the expansion module has been connected to the phone before configuration.
Page 38: Language
User Guide for the SIP-T48G IP Phone To configure the contrast via phone user interface: ->Basic Settings-->Display->Contrast. Tap the gray box of the Contrast Level field. Tap the desired value from the pull-down list. The default contrast level is 6.
Page 39: Time & Date
Customizing Your Phone Tap the desired language. Tap the Save soft key to accept the change. 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.
Page 40 User Guide for the SIP-T48G IP Phone Network Time Protocol (SNTP) server, contact your system administrator for more information. To configure the SNTP setting via phone user interface: ->Basic Settings-->Time & Date->General. Tap the gray box of the Type field.
Page 41 Customizing Your Phone Enter the specific date and time in the corresponding fields. Tap the Save soft key to accept the change. The time and date displayed on the touch screen will change accordingly. There are 7 available date formats. For example, for the date format “WWW DD MMM”, “WWW”...
Page 42: Administrator Password
User Guide for the SIP-T48G IP Phone Tap the desired time format (12 Hour or 24 Hour) from the pull-down list. Tap the Save soft key to accept the change or to cancel. Time and date are configurable via web user interface at the path Settings->Time &...
Page 43: Volume
Customizing Your Phone Administrator password is configurable via web user interface at the path Security->Password. You can set the "#" or "*" to perform as a send key while dialing. To configure key as send via phone user interface: ->Features->General. Tap the gray box of the Key as Send field.
Page 44: Ring Tones
User Guide for the SIP-T48G IP Phone To adjust the volume when the phone is idle: Press to adjust the ringer volume. Note If the ringer volume is adjusted to minimum, the icon will appear on the touch screen. To adjust the volume when the phone is during a call:...
Page 45 Customizing Your Phone Tap the desired ring tone. Tap the Save soft key to accept the change or to cancel. A ring tone for the phone is configurable via web user interface at the path Settings->Preference->Ring Type. To select a ring tone for the account via phone user interface: ->Basic ->Sound->Ring Tones.
Page 46 User Guide for the SIP-T48G IP Phone A ring tone for the account is configurable via web user interface at the path Account->Basic->Ring Type. Note The ring tone for an incoming call on the phone may be different. For example, when the...
Page 47: Directory
Customizing Your Phone Directory provides easy access to frequently used lists. The lists may contain Local Directory, History, Remote Phone Book and LDAP . To configure the directory via web user interface: Click on Directory->Setting. In the Directory block, select the desired list from the Disabled column and then click The selected list appears in the Enabled column.
Page 48: Local Directory
User Guide for the SIP-T48G IP Phone If there is only one list is enabled for the directory, tap to view the list directly. If more than one list is enabled for the directory, tap the desired list you want to view, and then tap the OK soft key.
Page 49 Customizing Your Phone If Local Directory is disabled for the directory, tap ->Directory->All Contacts to enter the local directory. Tap Setting. Tap New Group. Enter the desired group name in the highlighted field. to accept the change. to specify a ring tone for the group. Tap the desired ring tone.
Page 50 User Guide for the SIP-T48G IP Phone To edit a group in the local directory: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is disabled for the directory, tap ->Directory->All Contacts to...
Page 51: Adding Contacts Manually
Customizing Your Phone The touch screen prompts the following warning: Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel. You can add contacts to the local directory in one of the following ways: Manually ...
Page 52 User Guide for the SIP-T48G IP Phone Enter the name and the office, mobile or other numbers in the corresponding fields. Tap the gray box of the Account field. Tap the desired account from the pull-down list. If Auto is selected, the phone will use the first available account when placing calls to the contact from the local directory.
Page 53 Customizing Your Phone after the desired entry. Tap Add. Edit the corresponding fields. Tap the Save soft key to accept the change. The entry is successfully saved to the local directory.
Page 54 User Guide for the SIP-T48G IP Phone Adding Contacts from a remote phone book To add a contact to the local directory from a remote phone book: ->Remote Phone Book or tap ->Directory->Remote Phone Book to enter the remote phone book.
Page 55 Customizing Your Phone Edit the corresponding fields. Tap the Save soft key to save the contact to the local directory. If the contact already exists in the local directory, the touch screen will prompt "Overwrite the original contact?". Tap the OK soft key to overwrite the original contact in the local directory or the Cancel soft key to cancel.
Page 56 User Guide for the SIP-T48G IP Phone Tap the desired field to edit the contact information. You can tap to switch the contact you want to edit. Tap the Save soft key to accept the change or to cancel. To delete a contact from the local directory: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default.
Page 57 Customizing Your Phone The touch screen prompts the following warning: Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel. To delete all contacts: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default.
Page 58 User Guide for the SIP-T48G IP Phone The touch screen prompts the following warning: Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel. To upload a new custom photo for a contact via web user interface: Click on Directory->Local Directory.
Page 59 Customizing Your Phone To change the custom photo for the contact via web user interface: Click on Directory->Local Directory. Click the desired entry you want to edit. Select the desired photo from the pull-down list of Photo. Click Edit to accept the change. When you place a call to the contact or receive a call from the contact, the touch screen will display the contact photo.
Page 60 User Guide for the SIP-T48G IP Phone Tap the desired contact. If the contact was added to a specified contact group, you can tap the contact group first, and then tap the desired contact. If only one number for the contact is stored in the local directory, the contact number will be dialed out.
Page 61 Customizing Your Phone Enter a few continuous characters of the contact name or continuous numbers of the contact number (office, mobile or other number) using the keypad. The contacts whose name or phone number matches the characters entered will appear on the touch screen. You can dial from the result list. You can search for a contact from the desired lists when the phone is in the pre-dialing screen.
Page 62 User Guide for the SIP-T48G IP Phone To adjust the display order of the enabled list, select the desired list, and click Click Confirm to accept the change. The touch screen will display search results in the adjusted order. Note Search source list in dialing is configurable via web user interface only.
Page 63 Customizing Your Phone Enter a few continuous characters of the entry’s name or continuous numbers of the entry’s phone number (office, mobile or other number). The entries in the enabled search source lists whose name or phone number matches the characters entered will appear on the touch screen. You can tap the desired entry to place a call to the entry.
Page 64 User Guide for the SIP-T48G 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?".
Page 65 Customizing Your Phone It will prevent importing the title of the contact information which is located in the first line of the CSV file. Click Import CSV to import the contact list. (Optional.) Mark the On radio box in the Delete Old Contacts field. It will delete all existing contacts while importing the contact list.
Page 66: Blacklist
User Guide for the SIP-T48G IP Phone To export a contact list via web user interface: Click on Directory->Local Directory. Click Export XML (or Export CSV). Click Save to save the contact list to your local system. Note Importing/exporting contact lists is available via web user interface only.
Page 67 Customizing Your Phone Enter the contact’s name and the office, mobile or other numbers in the corresponding fields. Tap the gray box of the Account field. Tap the desired account from the pull-down list. If Auto is selected, the phone will use the first available account when placing calls to the contact from the blacklist directory.
Page 68: Remote Phone Book
User Guide for the SIP-T48G IP Phone The touch screen prompts the following warning: Tap the OK soft key to confirm the setting. For operating instructions on editing, deleting, placing calls to and searching for contacts in the blacklist directory, refer to the operating instructions of Local Directory page 38.
Page 69 Customizing Your Phone Click Confirm to accept the change. Note An access URL for a remote phone book is configurable via web user interface only. If you want to tap to enter the remote phone book, you should enable remote phone book in the directory lists in advance.
Page 70 User Guide for the SIP-T48G IP Phone Enter a few continuous characters of the contact name or continuous numbers of the contact number using the keypad. The contacts whose name or phone number matches the characters entered will appear on the touch screen. You can place a call from the result list.
Page 71 Customizing Your Phone Click Confirm to accept the change. The SIP-T48G IP phone maintains call history lists of Missed calls, Placed calls, Received calls and Forwarded calls. Call history lists support up to 400 entries. You can view call history, place a call, add a contact or delete an entry from the call history list.
Page 72 User Guide for the SIP-T48G IP Phone The detailed information of the entry appears on the touch screen. To place a call from the call history list: The touch screen displays all call records. to turn pages. You can also press to switch pages.
Page 73: Contact Management
Customizing Your Phone entries in each call list directly. after the desired entry. Tap Blacklist. Enter the desired values in the corresponding fields. Tap the Save soft key. For more information, refer to Contact Management on page 36. To delete an entry from the call history list: The touch screen displays all call records.
Page 74 User Guide for the SIP-T48G IP Phone Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel. To delete all entries from the call history list: The touch screen displays all call records. to turn pages.
Page 75: Phone Installation
Customizing Your Phone If you want to use a wired headset, physically connect your headset and activate the headset mode for use. For more information on physically connecting a headset, refer Phone Installation on page 12. If you want to use a wireless headset, insert the Bluetooth USB dongle BT40 into the USB port on the back of the phone.
Page 76 User Guide for the SIP-T48G IP Phone Select Enabled from the pull-down list of Headset Prior. Click Confirm to accept the change. To use headset prior, you should activate the headset mode in advance: Physically connect the headset. Press to activate the headset mode.
Page 77: Bluetooth Headset
Note Dual headset is configurable via web user interface only. The SIP-T48G IP phone supports Bluetooth. Bluetooth enables low-bandwidth wireless connections within a range of 10 meters (32 feet). The best performance is in the 1 to 2 meter (3 to 6 feet) range.
Page 78 User Guide for the SIP-T48G IP Phone Tap the On radio box of the Bluetooth field. The IP phone scans the available Bluetooth headset automatically. The LCD screen displays the Bluetooth device information (device name and MAC address). Before you pair a Bluetooth headset, check the indicator on the Bluetooth headset to make sure that the Bluetooth headset is discoverable.
Page 79 Customizing Your Phone If there is no Bluetooth devices found on the touch screen, tap the Scan soft key to search for the Bluetooth device. Enter the PIN in the prompted Password field. The default PIN is “0000”.
Page 80 User Guide for the SIP-T48G IP Phone Tap the OK soft key. The Bluetooth headset is then automatically connected to your phone. The touch screen displays as below: The Bluetooth icon appears on the touch screen. With the Bluetooth headset paired and connected, you can use the Bluetooth headset to place and answer calls.
Page 81 Customizing Your Phone To configure auto connection feature via phone user interface: ->Basic->Bluetooth. The touch screen displays the paired and connected Bluetooth headset. after the desired Bluetooth headset. Tap the desired radio box of the Auto Connect field. To change the priority of paired Bluetooth devices: ->Basic->Bluetooth.
Page 82 User Guide for the SIP-T48G IP Phone To disconnect your Bluetooth headset from your phone: ->Basic->Bluetooth. Tap the connected Bluetooth headset. The Bluetooth headset is disconnected. To connect it to your phone again, tap the Bluetooth headset again. You can delete your Bluetooth headset from your phone. When you delete the Bluetooth headset, it disappears from the Bluetooth Devices list.
Page 83 Customizing Your Phone The touch screen prompts the following warning “Delete the selected item?”. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel. You can also delete all headsets by tapping the Delete All soft key. Note If you cannot connect a Bluetooth headset to the phone successfully, we recommend that you delete the Bluetooth headset in the Bluetooth Devices list (if it exists) before pairing...
Page 84: Dss Keys
There are three types of DSS keys: Line Keys, Programmable Keys and Ext Keys. Details will be introduced in the following. The SIP-T48G IP phone supports 30 line keys. You can assign predefined functionalities to line keys. You can also define a label for a line key feature which will appear on the touch screen.
Page 85 Customizing Your Phone Select Extended from the pull-down list of Label Length. Click Confirm to accept the change. Note Page icon status and label length features are configurable via web user interface only. Line key features are explained in the following subchapters in detail: Line ...
Page 86 User Guide for the SIP-T48G IP Phone  Directory  For the features not listed above, refer to Basic Call Features on page Advanced Phone Features on page 137. 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 87 Customizing Your Phone Type (Key Event) Dependencies: Key Type (DPickup) Account ID (the account this feature will be applied to) Label (key label displayed on the touch screen) Value (the directed pickup code followed by the target phone number) Usage: Tap the directed pickup key on your phone when the target phone number receives an incoming call.
Page 88 User Guide for the SIP-T48G IP Phone 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. For...
Page 89 Customizing Your Phone Usage: Tap the LDAP 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. The contacts whose name or phone number matches the characters entered will appear on the touch screen.
Page 90 User Guide for the SIP-T48G IP Phone Value (the number you want to transfer to) Usage: When the transfer mode on DSS key is Blind Transfer, tap the transfer key to  complete the blind transfer to the number specified in the Value field.
Page 91 Customizing Your Phone Group Listening You can use this key feature to activate the Speakerphone and Handset/Headset mode at the same time. It is suitable for group conversations which have more than one person at one side. You are able to speak and listen through the handset/headset, while the others nearby can only listen through the speaker.
Page 92 User Guide for the SIP-T48G IP Phone Directory You can use this key feature to easily access frequently used lists. For more information, refer to Directory on page 37. Type (Key Event) Dependencies: Key Type (Directory) Label (key label displayed on the touch screen) Usage: Tap the directory key to immediately access to frequently used lists.
Page 93 Customizing Your Phone Usage: Press the programmable key to scroll up the account list to select the desired default account. Switch Account Down You can press this key to switch default account. Type (Switch Account Down) Dependencies: Usage: Press the programmable key to scroll down the account list to select the desired default account.
Page 94 User Guide for the SIP-T48G IP Phone You can register one or multiple accounts on the SIP-T48G IP phone. You can also configure each line key to associate with an account or configure multiple line keys to associate with an account.
Page 95 Customizing Your Phone Multiple accounts: To disable an account via phone user interface: ->Advanced (default password: admin) ->Account. Tap the desired account. Tap the gray box of the Account Status field. Tap Disabled from the pull-down list. Tap the Save soft key to accept the change or to cancel.
Page 96 User Guide for the SIP-T48G IP Phone will use this account by default when dialing out. You can also tap the label of the default account, and then tap the desired account to be the new default account. You can also press to select the desired account as the default account.
Page 97: Dial Plan
Your phone can be configured to have a combination of accounts with a single line key and accounts with multiple line keys. Dial plan is a string of characters that governs the way your SIP-T48G IP phone processes the inputs received from your phone keypad. The SIP-T48G IP phone supports...
Page 98 User Guide for the SIP-T48G IP Phone Syntax Description The “$” should be followed by the sequence number of a parenthesis. The “$” plus the sequence number means the whole character or characters placed in the parenthesis. The number directs to the right parenthesis when there are more than one.
Page 99 Customizing Your Phone Click Add to add the replace rule. When you enter the number “1” using the keypad and then tap the Send soft key, the phone will dial out “1234” instead. Note The valid values for the Account field can be one or more digits among 1-16. Every two digits must be separated by a comma.
Page 100 User Guide for the SIP-T48G IP Phone For more information on the valid values for the Account field, refer to Replace Rule on page 88. Click Add to add the dial-now rule. When you enter the number “234” using the keypad, the phone will dial out “234”...
Page 101 Customizing Your Phone Enter the time between 1 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 102 User Guide for the SIP-T48G IP Phone For more information on the valid values for the Account field, refer to Replace Rule on page 88. Click Confirm to accept the change. Note The default values of minimum and maximum length are 1 and 15 respectively.
Page 103: Live Dialpad
88. Click Confirm to add the block out number. You can enable live dialpad on the SIP-T48G IP phone, which enables the IP phone to automatically dial out a phone number without the pressing of the send key. You can also configure a delay, where the phone will dial out the phone number automatically after the designated period of time.
Page 104: Hotline
User Guide for the SIP-T48G IP Phone Enter the desired delay time in the Inter Digit Time (1~14s) field. The default delay time is 4s. Click Confirm to accept the change. Note Live dialpad is configurable via web user interface only.
Page 105 Customizing Your Phone Enter the desired delay time in the HotLine Delay field. The valid values range from 0 to 10s. Tap the Save soft key to accept the change or to cancel. Hotline is configurable via web user interface at the path Features->General Information.
Page 106 User Guide for the SIP-T48G IP Phone...
Page 107: Basic Call Features
Basic Call Features The SIP-T48G 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.
Page 108: Contact Management On
User Guide for the SIP-T48G IP Phone You can place a call in one of three ways using your SIP-T48G IP phone: Using the handset  Using the speakerphone  Using the headset  You can also dial the number first, and then choose the way you want to speak to the other party.
Page 109 Basic Call Features You can enter the number using the keypad displayed on the touch screen. Press , or tap the Send soft key. The # key is configured as a send key by default. You can also set the * key as the send key, or set neither.
Page 110 SIP-T48G IP phone can handle a maximum of 6 calls at one time. To place multiple calls: You can have more than one call on your SIP-T48G IP phone. To place a new call during an active call, do one of the following: Tap the line key.
Page 111 Basic Call Features Answering When Not in Another Call Call duration and destination will always appear on the touch screen for the active call. To answer a call using the handset: Pick up the handset. To answer a call using the hands-free speakerphone mode: Do one of the following: Press With the handset on-hook and the headset mode deactivated, tap the Answer soft...
Page 112: Recent Call In Dialing
User Guide for the SIP-T48G IP Phone To end a call: Do one of the following: If you are using the handset, tap the End Call soft key or hang up the handset. If you are using the headset, tap the End Call soft key.
Page 113 Basic Call Features Select Enabled from the pull-down list of Recent Call In Dialing. Click Confirm to accept the change. Note Recent call in dialing is configurable via web user interface only. To view placed calls list when the phone is in the pre-dialing interface: Pick up the handset, press the speakerphone key or tap the line key.
Page 114: Auto Answer
User Guide for the SIP-T48G IP Phone You can use auto answer 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: ->Features->Auto Answer. Tap the On radio box of the desired line.
Page 115: Auto Redial
Basic Call Features You can enable auto redial to automatically redial a phone number when the called party is busy. You can also configure the number of auto redial attempts and the time to wait between redial attempts. To configure auto redial via phone user interface: ->Features->Auto Redial.
Page 116: Call Completion
User Guide for the SIP-T48G IP Phone To use auto redial: When the called party is busy, the touch screen prompts the following: Tap the OK soft key to activate auto redial. The touch screen prompts the following: Wait for the designated period of time or tap the OK soft key to redial the phone number.
Page 117 Basic Call Features Tap the On radio box of the Call Completion field. Tap the Save soft key to accept the change or to cancel. Call completion is configurable via web user interface at the path Features->General Information. To use call completion: When the called party is busy, the following prompt will appear on the touch screen of the phone: Tap the OK soft key, the phone will then returns to the idle screen and call...
Page 118: Recall
User Guide for the SIP-T48G IP Phone When the called party becomes idle, the touch screen prompts the following: Tap the OK soft key to redial the number. Note Call completion is not available on all servers. For more information, contact your system administrator.
Page 119: Call Mute
Basic Call Features (Optional.) Enter a label that will appear on the touch screen in the Label field. Tap the Save soft key to accept the change or to cancel. Tap DSS Key to return to the idle screen. Recall key is configurable via web user interface at the path DSSKey->Line key. You can mute the microphone of the active audio device during an active call so that the other party cannot hear you.
Page 120 User Guide for the SIP-T48G IP Phone 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 on the phone at any time. Other calls can be made and received while placing the original call on hold.
Page 121 Basic Call Features DND is enabled are logged to your missed calls list. Note The prompt message will display only if Missed Call Log for the line is enabled. Missed call log is configurable via web user interface at the path Account->Basic->Miss Call Log.
Page 122 User Guide for the SIP-T48G IP Phone To activate DND in phone mode: icon on the status bar indicates that DND is enabled. Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n" indicates the number of missed calls) will appear on the touch screen.
Page 123 Basic Call Features Tap the On radio box of the Status field. Tap the Save soft key to accept the change. If you activate DND for the default account, the associated line icon will change , and the icon will appear on the status bar. If you activate DND for the non-default account, only the associated line icon will change to Incoming calls on the specific line will be rejected automatically, and the touch...
Page 124 User Guide for the SIP-T48G IP Phone The touch screen displays a list of accounts registered on the phone. Tap the All On soft key to activate DND for all accounts. to return to the idle screen. icon appears on the status bar, and all line icons change to Incoming calls will be rejected automatically, and the touch screen will prompt "n...
Page 125: Static Forwarding
Basic Call Features 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 126 User Guide for the SIP-T48G IP Phone No Answer Forward: Incoming calls are forwarded if not answered after a period  of time. 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.
Page 127 Basic Call Features Depending on your selection: a.) If you tap Always Forward: 1) Tap the On radio box of the Always Forward 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 or off code respectively in the On Code or Off Code field.
Page 128 User Guide for the SIP-T48G IP Phone calls to in the Forward to field. 3) Tap the gray box of the After Ring Time field. 4) Tap the desired ring time to wait before forwarding from the pull-down list. The default ring time is 12 seconds.
Page 129 Basic Call Features 3) (Optional.) Enter the always forward on code or off code respectively in the On Code or Off Code field. You can also enable always forward for all accounts. Do the following: 1) Tap the All Lines soft key. The touch screen prompts “Copy to all lines?”.
Page 130 User Guide for the SIP-T48G IP Phone 3) (Optional.) Enter the busy forward on code or off code respectively in the On Code or Off Code field. You can also enable busy forward for all accounts. Do the following: 1) Tap the All Lines soft key.
Page 131 Basic Call Features 5) (Optional.) Enter the no answer forward on code or off code respectively in the On Code or Off Code field. You can also enable no answer forward for all accounts. Do the following: 1) Tap the All Lines soft key. The touch screen prompts “Copy to all lines?”.
Page 132: Placing Calls On
User Guide for the SIP-T48G IP Phone If you activate call forward for the non-default account, only the associated line icon will change to Call forward is configurable via web user interface at the path Features->Forward & DND. Note You can also enter the SIP URL or IP address in the Forward to field. For more information...
Page 133: Dynamic Forwarding
Basic Call Features Dynamic Forwarding To forward an incoming call to another party: When the phone is ringing, tap the Forward soft key. Enter the number you want to forward the incoming call to. Press , or tap the Forward soft key. The touch screen prompts a call forward message.
Page 134 User Guide for the SIP-T48G IP Phone Enter the number you want to transfer the call to. Press or tap the Transfer soft key to complete the transfer. The call is then connected to the number to which you are transferring.
Page 135: Call Waiting
Basic Call Features advance. Refer to Directory on page for more information.) Tap the Directory soft key, and then tap Remote Phone Book. Search for the contact and tap the desired contact to dial out. (Directory and remote phone book should be configured in advance. Refer to Directory on page Remote Phone Book...
Page 136: Conference
User Guide for the SIP-T48G IP Phone You can use the SIP-T48G IP phone to create a conference with other two parties using the phone’s local conference or create a conference with multiple participants which is called network conference. Note Network conference is not available on all servers.
Page 137: Network Conference
Tap the End Call soft key to drop the conference call. You can use network conference feature on the SIP-T48G 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 138 User Guide for the SIP-T48G IP Phone Enter the conference URI (e.g., conference@example.com) in the Conference URI field. Click Confirm to accept the change. Note Network conference is configurable via web user interface only. To set up a network conference call: Place a call to the first party.
Page 139: Call Park
Basic Call Features You can use call park to place a call on hold, and then retrieve the call from another phone in the system (for example, a phone in another office or conference room). You can park an active call by tapping the call park key on the phone. If the call is parked successfully, the response is either a voice prompt confirming that the call was parked, or a visible prompt on the touch screen.
Page 140: Call Pickup
You can use call pickup to answer someone else’s incoming call on your phone. The SIP-T48G IP phone supports directed call pickup and group call pickup. Directed call pickup is used for picking up a call that is ringing at a target phone number. Group call pickup is used for picking up a call that is ringing at any phone number in a certain group.
Page 141 Basic Call Features 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. Select the desired account from the pull-down list of Account.
Page 142: Group Call Pickup
User Guide for the SIP-T48G IP Phone The DPickup soft key appears above the on-screen keypad. Tap 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.
Page 143 Basic Call Features Click Confirm to accept the change. To configure the group call pickup code on a per-line basis via web user interface: Click on Account. Select the desired account from the pull-down list of Account. Click on Advanced. Enter the group call pickup code in the Group Call Pickup Code field.
Page 144: Anonymous Call
User Guide for the SIP-T48G IP Phone incoming call. The call is answered on your phone. You can also configure a line key as a group pickup key via phone user interface or web user interface. Once configured, you can pick up a call by tapping the group pickup key directly.
Page 145: Anonymous Call Rejection On
Basic Call Features The phone will send the configured on code or off code depending on your selection when you enable or disable anonymous call feature on the phone. Tap the Save soft key to accept the change or to cancel. Anonymous call is configurable via web user interface at the path Account->Basic.
Page 146 User Guide for the SIP-T48G IP Phone To configure anonymous call rejection via phone user interface: ->Features->Anonymous. Tap the desired line. Tap the On radio box of the Local Anonymous Rejection field. (Optional.) Tap the On Code or Off Code radio box of the Send Anonymous Rejection Code field.
Page 147: Music On Hold
Advanced Phone Features This chapter provides operating instructions for the advanced features of the SIP-T48G IP phone. Topics include: Busy Lamp Field (BLF)  BLF List  Call Recording  Hot Desking  Intercom  Multicast Paging  Music on Hold ...
Page 148 User Guide for the SIP-T48G IP Phone (Optional.) Enter the pickup code in the Extension field. 10. Tap the Save soft key to accept the change or to cancel. 11. Tap DSS Key to return to the idle screen. BLF key is configurable via web user interface at the path DSSKey->Line key.
Page 149 Advanced Phone Features Select Enabled from the pull-down list of Audio Alert for BLF Pickup. Click Confirm to accept the change. Note Visual and audio alert features are configurable via web user interface only. When the monitored line receives an incoming call, the following occurs on your phone: The phone plays a warning tone (if enabled).
Page 150: Led Instructions On
User Guide for the SIP-T48G IP Phone To configure the transfer mode via DSS key via web user interface: Click on Features->Transfer. Select the desired transfer mode from the pull-down list of Transfer Mode Via Dsskey. Depending on your selection: If you select Blind Transfer, tap the BLF key to blind transfer the call to the monitored phone number.
Page 151 Advanced Phone Features pickup code has been configured in advance. If the directed pickup code is not configured, the 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, tap the BLF list key to barge in ...
Page 152 Code, refer to Call Pickup on page 130. You can record calls by tapping a record key on the phone. The SIP-T48G IP phone supports record and URL record. Two ways of call recording: Record: The phone sends a SIP INFO message containing a specific header “Record: ...
Page 153 Advanced Phone Features (Optional.) Enter a label that will appear on the touch screen in the Label field. Tap the Save soft key to accept the change or to cancel. Tap DSS Key to return to the idle screen. To configure a URL record key via phone user interface: Tap DSS Key.
Page 154 User Guide for the SIP-T48G IP Phone The Record and URL Record keys control the recording function, and are available: During an active call  When calls are on hold or muted  During a blind or attended transfer ...
Page 155 Advanced Phone Features and resources. You can use hot desking on the SIP-T48G IP phone to log out of existing accounts and then log into a new account. As a result, many users can share the phone resource at different times. To use this feature, you need to configure a hot desking key in advance.
Page 156 User Guide for the SIP-T48G IP Phone The touch screen prompts the following warning: Tap the OK soft key. Registration configurations of all accounts on the phone will be cleared immediately. The login wizard will be displayed as below: Enter the login information in each field.
Page 157 Tap the intercom key again or the End Call soft key to end the intercom call. The SIP-T48G IP phone supports to automatically answer an incoming intercom call by default. The phone automatically plays a warning tone when it receives an incoming intercom call.
Page 158 User Guide for the SIP-T48G IP Phone automatically answer an incoming intercom call while there is already an active call on the phone. The active call is then placed on hold. Intercom features you need to know: Intercom Feature Description...
Page 159: Multicast Paging
Advanced Phone Features Intercom Mute You can mute or un-mute the phone’s microphone for intercom calls automatically. If Intercom Mute is enabled, the microphone will be muted for intercom calls. If Intercom Mute is disabled, the microphone will work for intercom calls. Intercom Mute is disabled by default.
Page 160 User Guide for the SIP-T48G IP Phone Enter the multicast IP address and port number (e.g., 224.5.6.20:10008) in the Value field. The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255. Tap the Save soft key to accept the change or to cancel.
Page 161 Advanced Phone Features Tap the Save soft key to accept the change or to cancel. Paging list key is configurable via web user interface at the path DSSKey->Line Key. To configure paging list via phone user interface: Tap the paging list key when the phone is idle. Tap a desired paging group.
Page 162 User Guide for the SIP-T48G IP Phone Tap the Paging list key when the phone is idle. Tap a desired group. Tap the Delete soft key. Tap the OK soft key to accept the change or the Cancel soft key to cancel.
Page 163 Advanced Phone Features Click Confirm to accept the change. Note If G722 codec is used for multicast paging, the touch 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. To send RTP stream via a multicast paging key: Tap the multicast paging key when the phone is idle.
Page 164 User Guide for the SIP-T48G IP Phone Tap the desired group. Tap the Paging soft key to send RTP . Tap the Hold soft key to place the current multicast RTP session on hold. Tap the End Call soft key to cancel the multicast RTP session.
Page 165 Advanced Phone Features place the previous multicast paging call on hold. If disabled, the phone will automatically ignore all incoming multicast paging calls. To configure multicast listening addresses via web user interface: Click on Directory->Multicast IP. Select the desired value from the pull-down list of Paging Barge. Select the desired value from the pull-down list of Paging Priority Active.
Page 166 ACD on the SIP-T48G 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 167 Advanced Phone Features To configure an ACD key via phone user interface: ->Features->DSS Keys. Tap the desired DSS key. Tap the gray box of the Type field. Tap ACD from the pull-down list. (Optional.) Enter a label that will appear on the touch screen in the Label field. Tap the Save soft key to accept the change or to cancel.
Page 168 ACD key can be in progress on your phone. You can leave voice mails for someone else using the SIP-T48G IP phone. You can also listen to the voice mails that are stored in a voice mailbox. When receiving a new voice mail, the phone will play a warning tone, and the power indicator LED will slow flash red.
Page 169 Advanced Phone Features ->Messages->Set Voice Mail. Enter the voice mail access code (e.g., *88) in the desired account field. You can tap the 123 soft key to select the proper input mode. Tap the Save soft key to accept the change or to cancel.
Page 170 The MWI service is unsolicited for some servers, so the SIP-T48G IP phone only handles the MWI messages sent from the server. But for other servers, the MWI service is solicited, so the SIP-T48G IP phone must enable subscription for MWI.
Page 171: Voice Mail
Advanced Phone Features Options Description To use this feature, you should also configure the voice mail number. Note The phone will send SUBSCRIBE messages for MWI service to the account or the voice number MWI service depending on the server. Contact your system administrator for more information.
Page 172 User Guide for the SIP-T48G IP Phone Enter the desired voice mail number in the Voice Mail field. Click Confirm to accept the change. The IP phone will subscribe to the voice mail number for MWI service using Subscribe MWI to Voice Mail.
Page 173: Troubleshooting
Troubleshooting This chapter provides general troubleshooting information to help you solve the problems you might encounter when using your SIP-T48G IP phone. If you require additional information or assistance with your new phone, contact your system administrator. Why is the touch screen blank? Ensure that the phone is properly plugged into a functional AC outlet.
Page 174 User Guide for the SIP-T48G IP Phone You can also find the MAC address from the phone’s bar code on the back of the  phone. Why can’t I get a dial tone? Check for any loose connections and that the phone has been installed properly.
Page 175 Check that the custom image is neither too large nor too small. The phone will  adjust the image to be able to display it. Check the picture resolution of the wallpaper. The wallpaper resolution of the  SIP-T48G IP phone is 800*480 pixels.
Page 176 User Guide for the SIP-T48G IP Phone How to change the user password? To change the user password via web user interface: Click on Security->Password. Select User from the pull-down list of User Type. Enter the new user password in the New Password field and Confirm Password field.
Page 177 Troubleshooting 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. SRTP is configurable via web user interface only. How to reboot the phone? To reboot the phone via web user interface: Click on Settings->Upgrade.
Page 178 User Guide for the SIP-T48G IP Phone Any reboot of the phone may take a few minutes. How to export PCAP trace? We may need you to provide a PCAP trace to help analyze your problem. To export a PCAP trace via web user interface: Click on Settings->Configuration.
Page 179 Troubleshooting 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. Note It is recommended to reset the syslog level to 3 after exporting the system syslog. How to export/import the phone configurations? We may need you to provide the phone configurations to help analyze your problem.
Page 180 User Guide for the SIP-T48G IP Phone In the Export or Import Configuration block, click Export to open the file download window, and then save the file to your local system. To import the phone configurations via web user interface: Click on Settings->Configuration.
Page 181 Troubleshooting Click Upgrade to upgrade the firmware. The browser pops up the dialog box “Firmware of the SIP Phone will be updated. It will take 5 minutes to complete. Please don't power off!”. Click OK to confirm upgrading. How to reset the phone? Reset the phone to factory configurations after you have tried all troubleshooting suggestions but do not solve the problem.
Page 182 User Guide for the SIP-T48G IP Phone The touch screen prompts the following warning: Tap the OK soft key. The phone begins resetting. After reset, the touch screen prompts “Welcom Initializing…Please wait”. The phone will be reset to factory settings sucessfully after startup.
Page 183: 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 circumstances liable to consequences or legal issues caused by such changes.
Page 184 User Guide for the SIP-T48G IP Phone Place the device on a stable and level platform.  Please do not place heavy objects on the device in case of damageand  deformation caused by the heavy load. Keep at least 10 cm between the device and the closest object for heat ...
Page 185: Appendix A-Time Zones
Appendix A-Time Zones Time Zone Time Zone Name −11:00 Samoa −10:00 United States-Hawaii-Aleutian −09:30 French Polynesia −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 United States-Mountain Time −07:00 United States-MST no DST −06:00...
Page 186 User Guide for the SIP-T48G IP Phone Time Zone Time Zone Name +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 Namibia(Windhoek) +02:00 Estonia(Tallinn) +02:00 Finland(Helsinki) +02:00 Gaza Strip(Gaza) +02:00 Greece(Athens) +02:00 Israel(Tel Aviv)
Page 187 Appendix A-Time Zones Time Zone Time Zone Name +10:00 Russia(Vladivostok) +10:30 Australia(Lord Howe Islands) +11:00 New Caledonia(Noumea) +11:00 Russia(Srednekolymsk Time) +11:30 Norfolk Island +12:00 New Zealand(Wellington, Auckland) +12:00 Russia(Kamchatka Time) +12:45 New Zealand(Chatham Islands) +13:00 Tonga(Nukualofa) +13:30 Chatham Islands +14:00 Kiribati...
Page 188 User Guide for the SIP-T48G IP Phone...
Page 189: Index
Index Editing Contacts About This Guide Ending Calls Account Management Account Registration Adding Contacts General Settings Administrator password Getting Started Anonymous Call Anonymous Call Rejection Answering Calls Hardware Component Instructions Area Code Headset Use Attaching Stand Headset Mode Activation/Deactivation Audio Settings Auto Answer Hotline Auto Redial...
Page 190: System Customizations
User Guide for the SIP-T48G IP Phone Phone User Interface Placing Calls Placing Calls to Contacts Programmable Keys Outgoing Intercom Calls Overview Optional Accessories Recent Call In Dialing Redialing Numbers Registration Regulatory Notices Remote Phone Book Replace Rule Ring Tones...

Yealink SIP-T48G User Manual

About this Guide

Table of Contents

Overview

Advanced Phone Features

Getting Started

Customizing Your Phone

Basic Call Features

Troubleshooting

Regulatory Notices

Appendix A-Time Zones

Index

Quick Links

Related Manuals for Yealink SIP-T48G

Summary of Contents for Yealink SIP-T48G

Table of Contents