Yealink SIP-T21P User Manual
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Yealink SIP-T21P User Manual

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  • Page 2 Copyright © 2013 YEALINK NETWORK TECHNOLOGY CO., LTD Copyright © 2013 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-T21P 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 Packaging Contents and Regulatory Notices sections in this guide before you set up and use the SIP-T21P IP phone. If this is your first time using the SIP-T21P IP phone, we recommend that you first refer to Quick Installation Guide...
  • Page 6 User Guide for the SIP-T21P IP Phone...

  • Page 7: Table Of Contents

    Table of Contents About This Guide ..............v In This Guide ......................... v Table of Contents ..............vii Overview .................. 1 Hardware Component Instructions ..................1 Icon Instructions ........................3 LED Instructions ........................4 User Interfaces ........................5 Phone User Interface ......................5 Web User Interface ......................

  • Page 8: Table Of Contents

    User Guide for the SIP-T21P IP Phone Local Directory ........................ 28 Blacklist ..........................38 Remote Phone Book ......................40 Call History Management ....................42 System Customizations ...................... 44 Logo Customization ......................44 Headset Use ........................45 DSS Keys .......................... 46 Account Management ....................

  • Page 9: Table Of Contents

    Table of Contents Outgoing Intercom Calls ....................103 Incoming Intercom Calls ....................103 Multicast Paging ....................... 105 Sending RTP Stream ..................... 105 Receiving RTP Stream ....................107 Music on Hold ........................108 Automatic Call Distribution (ACD).................. 109 Messages .......................... 111 Short Message Service (SMS) ..................
  • Page 10 User Guide for the SIP-T21P 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-T21P IP phone are the LCD screen and the keypad.
  • Page 12 User Guide for the SIP-T21P IP Phone Hardware component instructions of the SIP-T21P IP phone are: Item Description Shows information about calls, messages, soft keys, time, date and other relevant data: • Call information — caller ID, call duration ①...
  • Page 13 Overview Icons appearing on the LCD screen are described in the following table: Icon Description Network is unavailable Registered successfully Registration failed Registering 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...
  • Page 14 User Guide for the SIP-T21P IP Phone Icon Description Keypad Lock Received Calls Placed Calls Missed Calls Recording box is full A call cannot be recorded Recording starts successfully Recording cannot be started Recording cannot be stopped Line key LED...

  • Page 15: User Interfaces

    Overview Two ways to customize configurations of your SIP-T21P IP phone: The user interface on the IP phone.  The user interface in a web browser on your PC.  The hardware components keypad and LCD 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 User Guide for the SIP-T21P IP Phone Options Phone User Interface Web User Interface --Contrast √ √ --Language √ √ --Time & Date √ √ --Administrator Password √ √ --Key as Send √ √ --Keypad Lock √ √ -- Volume √...
  • Page 17 Overview Options Phone User Interface Web User Interface --Intercom √ --Multicast Paging --Music on Hold --ACD √ --Messages √ SIP Account --User Options --Register Status √ --Activation √ --Label √ --Display Name √ --Register Name √ --User Name √ √ --Password √...

  • Page 18: Documentations

    User Guide for the SIP-T21P IP Phone The following table shows documentations available for the SIP-T21P IP phone. Name Contents Where found Format/Language Quick Installation Basic setup of the In the PDF/English Guide phone package Quick Reference Basic call features and...

  • Page 19: Getting Started

    Basic Network Settings  Registration  Idle Screen  If you require additional information or assistance with your new phone, contact your system administrator. The following components are included in your SIP-T21P IP phone package: SIP-T21P IP Phone  Phone Stand ...
  • Page 20 User Guide for the SIP-T21P IP Phone Power Adapter  Handset & Handset Cord  Ethernet Cable  Quick Installation Guide & Quick Reference Guide  CD-ROM  Check the list before installation. If you find anything missing, contact your system...
  • Page 21 Getting Started If your phone is already installed, proceed to Phone Initialization on page 13. This section introduces how to install the phone: 1) Attach the stand 2) Connect the handset and optional headset 3) Connect the network and power Attach the stand Connect the handset and optional headset Note...

  • Page 22: Power Over Ethernet

    Connect the included or a standard Ethernet cable between the Internet port on the phone and the one on the wall or switch/hub device port. Power over Ethernet With the included or a regular Ethernet cable, the SIP-T21P 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 23: Phone Initialization

    Getting Started After your phone is powered on, the system boots up and performs the following steps: Automatic Phone Initialization The phone finishes the initialization by loading the saved configuration. The LCD screen displays “Initializing…please wait” during this process. DHCP (Dynamic Host Configuration Protocol) The phone attempts to contact a DHCP server in your network to obtain valid IPv4 and IPv6 network settings (e.g., IP address, subnet mask, default gateway address and DNS address) by default.
  • Page 24 User Guide for the SIP-T21P IP Phone Enter the user name (admin) and password (admin) in the login page. 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.
  • Page 25 Getting Started Port. Press to select IPv4, IPv6 or IPv4 & IPv6 from the IP Mode field. Press the Save soft key to accept the change or the Back soft key to cancel. To configure a static IPv4 address via phone user interface: Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN Port->IPv4->Static IP Client.

  • Page 26: Idle Screen

    User Guide for the SIP-T21P IP Phone To configure PPPoE via phone user interface: Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN Port->IPv4->PPPoE IP Client. Enter the user name and password in the corresponding fields. Press the Save soft key to accept the change or the Back soft key to cancel.

  • Page 27: Customizing Your Phone

    Customizing Your Phone You can customize your SIP-T21P 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 28: Language

    User Guide for the SIP-T21P IP Phone The default language of the phone user interface is English. The phone will detect and use the same language as which of your web browser for the web user interface. If the language of your web browser is not supported by the phone, the web user interface will use English.

  • Page 29: Time & Date

    Customizing Your Phone Click Confirm to accept the change. Text displayed on the web user interface will change to the selected language. The time and date are displayed on the LCD screen when the phone is idle. If the phone cannot obtain the time and date from the Simple Network Time Protocol (SNTP) server, you need to configure the time and date manually.

  • Page 30: Administrator Password

    User Guide for the SIP-T21P IP Phone Press the Save soft key to accept the change. The date and time displayed on the LCD screen will change accordingly. To configure the time and date format via phone user interface: Press Menu->Settings->Basic Setting->Time & Date->Time & Date Format.

  • Page 31: Keypad Lock

    Customizing Your Phone To change the administrator password via phone user interface: Press Menu->Settings->Advanced Settings (password: admin) ->Set Password. Enter the current password in the Current PWD field. Enter the new password in the New PWD field. Enter the new password again in the Confirm PWD field. Press the Save soft key to accept the change or the Back soft key to cancel.
  • Page 32 User Guide for the SIP-T21P IP Phone phone until unlocked. Function Keys: The function keys are locked. You cannot use the MESSAGE, RD, TRAN, OK, X, navigation keys, soft keys and line keys until unlocked. All Keys: All keys are locked except the Volume key. You are only allowed...
  • Page 33 Customizing Your Phone Enter the desired interval in the Phone Lock Time Out (0~3600s) field. Click Confirm to accept the change. Note The default interval is 0 second, that is, you can long press to lock the keypad only. The interval of automatic keypad lock is configurable via web user interface only. To unlock the keypad, you must know the keypad unlock PIN of the phone.

  • Page 34: Volume

    User Guide for the SIP-T21P IP Phone To unlock the keypad via phone user interface: Press any locked key, the LCD screen prompts “Please Enter PIN”. Enter the PIN in the PIN field. Press the Confirm soft key to unlock the keypad.

  • Page 35: Ring Tones

    Customizing Your 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 LCD screen. To adjust the volume when the phone is during a call: Press to adjust the volume of currently engaged audio device (handset, speakerphone or headset).
  • Page 36 User Guide for the SIP-T21P IP Phone To select a ring tone for the account via web user interface: Click on Account. Select the desired account from the pull-down list of Account. Click on Basic. Select the desired ring tone from the pull-down list of Ring Type.

  • Page 37: Directory

    Customizing Your Phone Click Upload to upload the file. Note The ring tone for an incoming call on the phone may be different. For example, when the phone receives an incoming call from a contact stored in the local directory, it will play the ring tone assigned to the contact in the contact directory (refer to Adding Contacts).

  • Page 38: Local Directory

    User Guide for the SIP-T21P IP Phone 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. Note Directory is configurable via web user interface only.
  • Page 39 Customizing Your Phone To add a group to the local directory: Press the Dir soft key. The IP phone enters the local directory directly as there is only Local Directory in the by default. directory If Local Directory is removed from the , press Menu->...
  • Page 40 User Guide for the SIP-T21P IP Phone Press the Option soft key, and then select Detail from the prompt list. Press to scroll through the group information and then edit. Press the Save soft key to accept change or the Back soft key to cancel.

  • Page 41: Adding Contacts Manually

    Customizing Your Phone You can add contacts to the local directory in the following ways: Manually  From call history  From remote phone book  Adding Contacts Manually To add a contact to the local directory manually: Press the Dir soft key. The IP phone enters the local directory directly as there is only Local Directory in the by default.
  • Page 42 User Guide for the SIP-T21P IP Phone Press the Add soft key to accept the change or the Back soft key to cancel. If the contact has existed in the directory, the LCD screen will prompt “Contact Name Note existed!”.
  • Page 43 Customizing Your Phone To edit 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 in the by default. directory If Local Directory is removed from the , press Menu->Dir->Local Directory directory to enter the local directory.
  • Page 44 User Guide for the SIP-T21P IP Phone Select the desired group and then press the Enter soft key. Press to select the desired contact. Press the Option soft key, and then select Delete from the prompt list. The LCD screen prompts “Delete Selected Item?”.
  • Page 45 Customizing Your 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 in the by default. directory If Local Directory is removed from the , press Menu->Dir->Local Directory directory to enter the local directory.
  • Page 46 User Guide for the SIP-T21P IP Phone The LCD screen displays the 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 or press the line key.
  • Page 47 Customizing Your Phone You can manage your phone’s local directory via phone user interface or web user interface. But you can only import or export the contact list via web user interface. To import an XML file of contact list via web user interface: Click on Directory->Local Directory.

  • Page 48: Blacklist

    User Guide for the SIP-T21P IP Phone (Optional.) Select the contact information you want to import into the local directory from the pull down list of Index. Click Import to complete importing the contact list. To export contact list via web user interface: Click on Directory->Local Directory.
  • Page 49 Customizing Your 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 first available account when placing calls to the contact from the blacklist.

  • Page 50: Remote Phone Book

    User Guide for the SIP-T21P IP Phone You can access your corporate directory through your phone. You can add local contacts, search for a contact, or simply dial a contact number from the corporate directory. You can configure your new phone to access up to 5 corporate directories. The phone supports up to 2000 corporate directory entries.
  • Page 51 Customizing Your Phone The phone connects to load the corporate directory, and then the corporate contact list appears on the LCD screen. Press the Back soft key to back to the previous interface. To search for a contact in the corporate directory: Press Menu->Dir->Remote Phone Book.
  • Page 52 The default value is 21600 seconds. Click Confirm to accept the change. The SIP-T21P IP phone maintains call history lists of Placed Calls, Received Calls, Missed Calls and Forwarded Calls. Call history lists support 100 entries in all. You can view the call history, place a call, add a contact or delete an entry from the call history list.

  • Page 53: Contact Management

    Customizing Your Phone Press the Option soft key, and then select Detail from the prompt list. The detailed information of the entry appears on the LCD screen. To place a call from the call history list: Press the History soft key. Press to switch between All Calls, Placed Calls, Received Calls, Missed Calls and Forwarded.
  • Page 54 User Guide for the SIP-T21P IP Phone The LCD screen prompts "Delete all records?". Press the Ok soft key to confirm the deletion or the Cancel soft key to cancel. You can upload your custom logo which will be shown on the idle screen.

  • Page 55: Headset Use

    Customizing Your Phone Click Confirm to accept the change. Note The logo file format must be *.dob, contact your system administrator for more information. Logo customization is configurable via web user interface only. Physically connect your headset and activate the headset mode for use. For more information on physically connecting a headset, refer to Phone Installation on page 11.

  • Page 56: Dss Keys

    Two types of DSS keys: Line Keys and Programmable Keys. The details will be introduced in the following. The SIP-T21P IP phone supports 2 line keys. You can assign predefined functionalities to the line keys to have quick access to features such as call return and voice mail.
  • Page 57 Customizing Your Phone To configure the line key via phone user interface: Press Menu->Features->DSS Keys. Select the desired line key, and then press the Enter soft key. Select the desired key type from the Type field. (Optional.) Select the desired key event from the Key Type field. (Optional.) Select the desired line from the Account ID field.
  • Page 58 User Guide for the SIP-T21P IP Phone For more information, contact your system administrator. Speed Dial You can use this key feature to speed up dialing numbers often used or hard to remember. Type (Speed Dial) Dependencies: Account ID (the account this feature will be applied to)
  • Page 59 Customizing Your Phone DTMF You can use this key feature to send the specification of arbitrary key sequences via DTMF . Type (Key Event) Dependencies: Key Type (DTMF) Value (DTMF sequence) Usage: Press the DSS key during an active call to send the key sequence specified in the Value field.
  • Page 60 User Guide for the SIP-T21P IP Phone XML Browser You can use this key feature to access the XML browser quickly. The XML browser allows you to create custom services which meet your functional requirements on the server. You can customize practical applications, such as weather report, stock information, Google search, etc.
  • Page 61 Customizing Your Phone Usage: Press the DSS key to forward an incoming call to the number specified in the Value field. Note When you leave the Value field blank, the DSS key performs the same function as the Fwd soft key when receiving an incoming call. Transfer You can use this key feature to handle the call differently depending on the transfer mode on DSS key when there is an active call on the phone.
  • Page 62 User Guide for the SIP-T21P IP Phone Type (Key Event) Dependencies: Key Type (DND) Usage: When DND is in phone mode: Press the DSS key to activate DND. Press the DSS key again to deactivate DND. When DND is in custom mode: Press the DSS key to access the custom DND interface.
  • Page 63 Customizing Your Phone Configure the network parameters in the corresponding fields. 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. Keypad Lock You can use this key feature to immediately lock the keypad of your phone instead of long pressing .
  • Page 64 Note Programmable keys are configurable via web user interface only. You can register one or multiple accounts on the SIP-T21P 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 65: Registration

    Incoming calls to this account will be distributed evenly among the available line keys. Outgoing calls will be distributed similarly. Dial plan is a string of characters that governs the way your SIP-T21P IP phone processes the inputs received from your phone keypad. The SIP-T21P IP phone supports the...
  • Page 66 User Guide for the SIP-T21P IP Phone placed in the parenthesis. The number directs to the right parenthesis when there are more than one. Example: A replace rule configuration: Prefix: "9([5-7]) (.)", Replace: "5$2". When you enter "96123" to dial out on your phone, the number will be replaced as "5123"...
  • Page 67 Customizing Your Phone 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 among 1 and 2. Each digit must be separated by a comma.
  • Page 68 User Guide for the SIP-T21P IP Phone For more information on the valid values of Account field, refer to Replace Rule page 56. Click Add to add the dial-now rule. When you enter the number “1234” using the keypad, the phone will dial out “1234”...
  • Page 69 Customizing Your Phone Enter the time within 1-14 (in seconds) in the Time-Out for Dial-Now Rule field. 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). They usually indicate geographical areas in a country.
  • Page 70 User Guide for the SIP-T21P IP Phone For more information on the valid values of Account field, refer to Replace Rule page 56. Click Confirm to accept the change. Note Area code is configurable via web user interface only. You can block some specific numbers from being dialed on your phone. When you dial a block out number on your phone, the dialing will fail and the LCD screen will prompt “Forbidden Number”.

  • Page 71: Emergency Number

    Customizing Your Phone For more information on the valid values of Account field, refer to Replace Rule page 56. 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 72: Live Dialpad

    Note Emergency number is configurable via web user interface only. You can enable live dialpad on the SIP-T21P IP phone, which enables the IP phone to automatically dial out the phone number without pressing the send key. You can also configure a delay, where the phone will dial out the phone number automatically after the specified period of time.

  • Page 73: Hotline

    Customizing Your 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. You can dial a hotline number immediately upon lifting the handset, pressing the Speakerphone key or pressing a line key.
  • Page 74 User Guide for the SIP-T21P IP Phone...

  • Page 75: Basic Call Features

    Basic Call Features The SIP-T21P 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 76 User Guide for the SIP-T21P IP Phone 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. You can also search and dial a contact from call history, local directory or remote phone book.
  • Page 77 45. To place multiple calls: You can have more than one call on your SIP-T21P IP phone. To place a new call during an active call, do one of the following: Press the line key. The active call is placed on hold.
  • Page 78 User Guide for the SIP-T21P IP Phone Answering When Not in Another Call Call duration and destination will always appear on the LCD 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:...

  • Page 79: Recent Call In Dialing

    Basic Call Features If you are using the speakerphone, press or the Cancel soft key. To end a call placed on hold, you can press the Cancel soft key to end the call directly, or Note press the Resume soft key to resume the call before ending it. To redial the last dialed number from your phone: Press twice.

  • Page 80: Auto Answer

    User Guide for the SIP-T21P IP Phone 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 screen: Pick up the handset, press the speakerphone or press the line key.

  • Page 81: Auto Redial

    Basic Call Features Auto answer is configurable via web user interface at the path Account->Basic. Note Auto answer is only applicable when there is no other call in progress on the phone. You can enable auto redial to redial the phone number automatically when the called party is busy.

  • Page 82: Call Completion

    User Guide for the SIP-T21P IP Phone Press the Ok soft key to activate auto redial. The following prompt will appear on the LCD screen of the phone: Wait for a period of time or press the Ok soft key to redial the phone number.

  • Page 83: Call Return

    Basic Call Features Press the Ok soft key, the phone returns to the idle screen and call completion is activated. When the called party becomes idle, the following prompt appears on the LCD screen of the phone: Press the Ok soft key to redial the number. Note Call completion is not available on all servers.
  • Page 84 User Guide for the SIP-T21P IP Phone The LCD screen indicates that the call is on mute. 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.
  • Page 85 Basic Call Features for example “2/3”, indicating that this is the second call out of three calls. You can use DND to reject incoming calls automatically on the phone. Callers will receive a busy message. You can enable/disable DND for the phone system, or you can customize DND for each or all accounts.
  • Page 86 User Guide for the SIP-T21P IP Phone To activate DND in phone mode: Press the DND soft key when the phone is idle. icon on the idle screen indicates that DND is enabled. Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n"...
  • Page 87 Basic Call Features The LCD screen displays a list of the accounts on the phone. Press the All On soft key to activate DND for all accounts. Press the Save soft key to accept the change. icon appears on the idle screen and all line icons change to Incoming calls will be rejected automatically and "n New Missed Call(s)"...

  • Page 88: Static Forwarding

    User Guide for the SIP-T21P IP Phone Enter the numbers in the DND Authorized Numbers field. 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.
  • Page 89 Basic Call Features 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.  Custom: Call forward can be configured for each or all accounts.
  • Page 90 User Guide for the SIP-T21P IP Phone Depending on your selection: a.) If you select Always Forward: 1) Press , or the Switch soft key to select Enable from the Always field. 2) Enter the destination number you want to forward all incoming calls to in the Forward to field.
  • Page 91 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 idle screen indicates call forward is enabled.
  • Page 92 User Guide for the SIP-T21P IP Phone b.) If you select Busy Forward, you can enable it for a specific account. 1) Press , or the Switch soft key to select Enable from the Busy field. 2) Enter the destination number you want to forward all incoming calls to when the phone is busy in the Forward to field.
  • Page 93 Basic Call Features 4) (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. After no answer forward was enabled for a specific account, do the following: 1) Press to scroll to the No Answer field.

  • Page 94: Dynamic Forwarding

    User Guide for the SIP-T21P IP Phone 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. Press to select the desired account, then press the Enter soft key.
  • Page 95 Basic Call Features Press or the Tran soft key to complete call transfer. Then the call is connected to the number to which you are transferring. To perform a semi-attended transfer: Press or the Tran soft key during a call. Do one of the following: Enter the number you want to transfer the call to.

  • Page 96: Call Waiting

    User Guide for the SIP-T21P IP Phone If you are using a handset, call transfer can be completed by hanging up the handset. You can cancel call transfer before the call is connected by pressing the Cancel soft key. You can enable or disable call waiting on the phone. If call waiting is enabled, you can receive another call when there is an active call on the phone.

  • Page 97: Local Conference

    Basic Call Features The SIP-T21P 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 98 User Guide for the SIP-T21P IP Phone To use this feature, contact your system administrator for the network conference URI in advance. To configure network conference via web user interface: Click on Account. Select the desired account from the pull-down list of Account.

  • Page 99: Call Park

    Basic Call Features When the new party answers the call, press the Conference soft key to add the new party to the conference. Repeat steps 5 to 7 until you have added all intended parties. The procedures to set up a network conference call for specific servers may be different from introduced above.

  • Page 100: Call Pickup

    You can use call pickup to answer someone else’s incoming call on the phone. The SIP-T21P 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 specific phone number. Group call pickup is used for picking up a call that is ringing at any phone number in the group.
  • Page 101 Basic Call Features Click Confirm to accept the change. To configure the directed call pickup code on a global basis via web user interface: Click on Features->Call Pickup. Enter the directed call pickup code in the Directed Call Pickup Code field. Click Confirm to accept the change.
  • Page 102 User Guide for the SIP-T21P IP Phone Enter the directed call pickup code in the Directed Call Pickup Code field. Click Confirm to accept the change. To pick up a call directly: Pick up the handset. The DPickup soft key appears on the LCD screen.

  • Page 103: Group Call Pickup

    Basic Call Features Group Call Pickup To enable the group call pickup via web user interface: Click on Features->Call Pickup. Select Enabled from the pull-down list of Group Call Pickup. Click Confirm to accept the change. To configure the group call pickup code on a global basis via web user interface: Click on Features->Call Pickup.
  • Page 104 User Guide for the SIP-T21P 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. The GPickup soft key appears on the LCD screen.

  • Page 105: Anonymous Call

    Basic Call Features You can use anonymous call to block the identity and phone number from showing up to the called party when you call someone. For example, you want to call to consult some of the services, but don’t want to be harassed. Anonymous call is configurable on a per-line basis.

  • Page 106: Anonymous Call Rejection

    User Guide for the SIP-T21P IP Phone 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 showing up. Anonymous call rejection is configurable on a per-line basis.

  • Page 107: Advanced Phone Features

    Advanced Phone Features This chapter provides operating instructions for the advanced features of the SIP-T21P IP phone. Topics include: Busy Lamp Field (BLF)  Call Recording  Hot Desking  Intercom  Multicast Paging  Music on Hold  Automatic Call Distribution (ACD) ...
  • Page 108 User Guide for the SIP-T21P IP Phone Press , or the Switch soft key to select the desired line from the Account ID field. Enter the phone number or extension you want to monitor in the Value field. (Optional.) Enter the pickup code in the Extension field.

  • Page 109: Call Recording

    DSS key, refer to transfer in the DSS Keys section on page 46. You can record calls by pressing a record key on the phone. The SIP-T21P IP phone supports record and URL record. Two ways of call recording: Record: The phone sends SIP INFO message containing a specific header “Record:...
  • Page 110 User Guide for the SIP-T21P IP Phone Press , or the Switch soft key to select Record from the Key Type field. Press the Save soft key to accept the change or the Back soft key to cancel. To configure a URL record key via phone user interface: Press Menu->Features->DSS Keys.

  • Page 111: Hot Desking

    You can use hot desking on the SIP-T21P IP phone to log out of the existing accounts and then log into a new account, that is, many users can share the phone resource in different time.
  • Page 112 User Guide for the SIP-T21P IP Phone Press , or the Switch soft key to select Hot Desking from the Key Type 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.

  • Page 113: Intercom

    Press the intercom key again or the Cancel soft key to end the intercom call. The SIP-T21P IP phone supports automatically to answer an incoming intercom call by default. The phone automatically plays a warning tone when it receives an incoming intercom call.
  • Page 114 User Guide for the SIP-T21P IP Phone automatically answer an incoming intercom call while there is already an active call on the phone, the active call is placed on hold. Intercom features you need to know: Intercom Feature Description Enable or disable the IP phone to automatically Accept Intercom answer an incoming intercom call.

  • Page 115: Multicast Paging

    Advanced Phone Features Mute is disabled, the microphone works for intercom calls. Intercom Mute is disabled by default. Warning Tone You can enable or disable the phone to play a warning tone when receiving an intercom call. If Warning Tone is enabled, the phone plays a warning tone before answering the intercom call.
  • Page 116 User Guide for the SIP-T21P 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 117 Advanced Phone Features involved. The multicast paging key LED illuminates solid green. The following figure shows a multicast RTP session on the phone: Press the Hold soft key to place the current multicast RTP session on hold. Press the Cancel soft key to cancel the multicast RTP session. Note Multicast RTP is one way only from sender to the multicast address(es) (receiver).

  • Page 118: Music On Hold

    User Guide for the SIP-T21P IP Phone To configure multicast listening addresses via web user interface: Click on Directory->MulticastIP. 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 119 ACD on the SIP-T21P 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 120 User Guide for the SIP-T21P IP Phone To configure an ACD key via phone user interface: Press Menu->Features->DSS Keys. Select the desired DSS key. Press , or the Switch soft key to select ACD from the Type field. Press the Save soft key to accept the change or the Back soft key to cancel.

  • Page 121: Messages

    Advanced Phone Features You can send and receive text messages using the SIP-T21P IP phone. New text messages can be indicated both acoustically and visually. When receiving a new text message, the phone will play a warning tone. The LCD screen will prompt receiving new text messages with the number of waiting messages (e.g., 1 New Text Message(s)) and...
  • Page 122 User Guide for the SIP-T21P IP Phone Compose the new text message. You can press the abc soft key to change the input mode. Press the Send soft key after completing the content. (Optional.) Press , or the Switch soft key to select the desired account from the From field.

  • Page 123: Voice Mail

    You can also delete a specific message after retrieving by pressing the Delete soft key. You can leave voice mails for someone else on the SIP-T21P IP phone. You can also listen to the voice mails stored in a centralized location. When receiving a new voice mail, the phone will play a warning tone and the MESSAGE key LED will illuminate.

  • Page 124: Message Waiting Indicator (Mwi)

    Select an account and then press the Conn soft key to listen to the voice mails. The SIP-T21P IP phone supports MWI when receiving a new voice message. If someone leaves you a voice mail, you will receive a message waiting indicator. MWI will be...
  • Page 125 The MWI service is unsolicited for some servers, so the SIP-T21P IP phone only handles the MWI messages sent from the server. But for other servers, the MWI service is solicited, so the SIP-T21P IP phone must enable subscription for MWI.
  • Page 126 User Guide for the SIP-T21P IP Phone Enter the period time in the MWI Subscription Period (Seconds) field. Click Confirm to accept the change. 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.
  • Page 127 Advanced Phone Features 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. Note MWI subscription is configurable via web user interface only.
  • Page 128 User Guide for the SIP-T21P IP Phone...

  • Page 129: Troubleshooting

    Troubleshooting This chapter provides general troubleshooting information to help to solve the problems you might encounter when using your SIP-T21P IP phone. If you require additional information or assistance with your new phone, contact your system administrator. Why is the LCD screen blank? Ensure that the phone is properly plugged into a functional AC outlet.
  • Page 130 User Guide for the SIP-T21P IP Phone How to obtain the MAC address of a phone when the phone is not powered on? Three ways you can obtain the MAC address of a phone: You can ask your supplier for shipping information sheet which includes MAC ...
  • Page 131 Troubleshooting Check that the headset volume is adjusted to an appropriate level. Refer to Volume  on page 24. What is the difference between user name, register name and display name? Both user name and register name are defined by the server. A user name is used to identify the account while a register name matched with a password is used for authentication if the server requires.
  • Page 132 User Guide for the SIP-T21P IP Phone Why can’t I send a SMS to any other phone? depends on support from a SIP server. Contact your system administrator for more information. How to change the user password? To change the user password via web user interface: Click on Security->Password.
  • Page 133 Troubleshooting Select the desired value 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 134 User Guide for the SIP-T21P IP Phone Click Reboot to reboot the phone. Note You can also long press the X key to reboot the phone directly. 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.
  • Page 135 Troubleshooting How to export system log? We may need you to provide debug log information to help analyze problem. By default, you can export the debug system log information to local PC. To export the system log to local PC via web user interface: Click on Upgrade->Advanced.
  • Page 136 User Guide for the SIP-T21P IP Phone Click Export to open 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. Click Browse to locate a configuration file from your local system.
  • Page 137 Troubleshooting Click Browse to locate the 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. Please don't power off!”. Click OK to confirm upgrading.
  • Page 138 User Guide for the SIP-T21P IP Phone Press the Ok soft key. The LCD screen prompts “Resetting…Please Wait!”. The LCD screen prompts “Welcom Initializing…please wait”. The phone will be reset to factory sucessfully after startup. Note Reset of your phone may take a few minutes. Do not power off until the phone starts up...

  • Page 139: 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 140 User Guide for the SIP-T21P 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 141: Appendix A - Time Zones

    Appendix A-Time Zones Time Zone Time Zone Name −11:00 Samoa −10:00 United States-Hawaii-Aleutian −10:00 United States-Alaska-Aleutian −09:00 United States-Alaska Time −08:00 Canada(Vancouver, Whitehorse) −08:00 Mexico(Tijuana, Mexicali) −08:00 United States-Pacific Time −07:00 Canada(Edmonton, Calgary) −07:00 Mexico(Mazatlan, Chihuahua) −07:00 United States-Mountain Time −07:00 United States-MST no DST −06:00...
  • Page 142 User Guide for the SIP-T21P IP Phone Time Zone Time Zone Name +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) +02:00 Jordan(Amman) +02:00 Latvia(Riga)

  • Page 143: Audio Settings

    Index Do Not Disturb (DND) About This Guide Documentations Account Management DSS Keys Account Registration Adding Contacts Adding Groups Administrator password Editing Contacts Anonymous Call Editing Groups Anonymous Call Rejection Emergency Number Answering Calls Ending Calls Area Code Attaching Stand Audio Settings General Settings Auto Answer...

  • Page 144: System Customizations

    User Guide for the SIP-T21P IP Phone Message Waiting Indicator Warranty Multicast Paging Web User Interface Music on Hold WEEE Warning Network Conference Network Connection No answer Forward Outgoing Intercom Calls Overview Packaging Contents Phone Initialization Phone Installation Phone Status...

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