Yealink Yealink SIP-T21P User manual

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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. Under the law, reproducing includes
translating into another language or format.
When this publication is made available on media, Yealink Network Technology CO., LTD. gives
its consent to downloading and printing copies of the content provided in this file only for private
use but not for redistribution. No parts of this publication may be subject to alteration,
modification or commercial use. Yealink Network Technology CO., LTD. will not be liable for any
damages arising from use of an illegally modified or altered publication.
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE
SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND
RECOMMENDATIONS IN THIS GUIDE ARE BELIEVED TO BE ACCURATE AND PRESENTED
WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL
RESPONSIBILITY FOR THEIR APPLICATION OF PRODUCTS.
YEALINK NETWORK TECHNOLOGY CO., LTD. MAKES NO WARRANTY OF ANY KIND WITH
REGARD TO THIS GUIDE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Yealink Network Technology
CO., LTD. shall not be liable for errors contained herein nor for incidental or consequential
damages in connection with the furnishing, performance, or use of this guide.
Hereby, Yealink Network Technology CO., LTD. declares that this phone is in conformity
with the essential requirements and other relevant provisions of the CE, FCC.
This device is marked with the CE mark in compliance with EC Directives 2006/95/EC and 2004/108/EC.
This device is compliant with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired
operation.

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Note: This device is tested and complies with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experience radio/TV technician for help.
To avoid the potential effects on the environment and human health as a result of the
presence of hazardous substances in electrical and electronic equipment, end users of
electrical and electronic equipment should understand the meaning of the crossed-out
wheeled bin symbol. 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 [email protected].

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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.

About This Guide
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Thank you for choosing the SIP-T21P IP phone, exquisitely designed to provide business
telephony features, such as Call Hold, Call Transfer, Busy Lamp Field, Multicast Paging
and Conference over an IP network.
This guide provides everything you need to quickly use your new phone. First, verify
with your system administrator that the IP network is ready for phone configuration. Also
be sure to read the 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
the Quick Installation Guide and Quick Reference Guide , available online:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
Note
This is the first edition based on firmware version 71. Topics provided in this guide
include:
Chapter 1 Overview
Chapter 2 Getting Started
Chapter 3 Customizing Your Phone
Chapter 4 Basic Call Features
Chapter 5 Advanced Phone Features
Shared Line, Busy Lamp Field List, Network Directory and Network Call Log features are
hidden for IP phones in neutral version, which are designed for BroadWorks environment.
Please contact your system administrator for more information.

User Guide for the SIP-T21P IP Phone
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Table of Contents
vii
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........................................................................................................... 5
Documentations ................................................................................................................... 8
Getting Started......................................................................... 9
Packaging Contents............................................................................................................. 9
Phone Installation............................................................................................................... 11
Phone Initialization ............................................................................................................. 13
Phone Status ....................................................................................................................... 13
Basic Network Settings...................................................................................................... 14
Registration ......................................................................................................................... 16
Idle Screen.......................................................................................................................... 16
Customizing Your Phone ......................................................... 17
General Settings ................................................................................................................ 17
Contrast............................................................................................................................ 17
Language......................................................................................................................... 18
Time & Date ..................................................................................................................... 19
Administrator Password ................................................................................................. 20
Key as Send..................................................................................................................... 21
Keypad Lock.................................................................................................................... 21
Audio Settings .................................................................................................................... 24
Volume ............................................................................................................................. 24
Ring Tones ........................................................................................................................ 25
Contact Management....................................................................................................... 27
Directory........................................................................................................................... 27

User Guide for the SIP-T21P IP Phone
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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 ................................................................................................... 54
Dial Plan ........................................................................................................................... 55
Emergency Number........................................................................................................ 61
Live Dialpad .................................................................................................................... 62
Hotline .............................................................................................................................. 63
Basic Call Features................................................................. 65
Placing Calls ....................................................................................................................... 65
Answering Calls ................................................................................................................. 67
Ending Calls ........................................................................................................................ 68
Redialing Numbers ............................................................................................................ 69
Recent Call In Dialing ........................................................................................................ 69
Auto Answer ....................................................................................................................... 70
Auto Redial.......................................................................................................................... 71
Call Completion ................................................................................................................. 72
Call Return........................................................................................................................... 73
Call Mute............................................................................................................................. 73
Call Hold/Resume............................................................................................................... 74
Do Not Disturb (DND) ........................................................................................................ 75
Call Forward ....................................................................................................................... 78
Call Transfer ........................................................................................................................ 84
Call Waiting ........................................................................................................................ 86
Conference ......................................................................................................................... 86
Local Conference............................................................................................................ 87
Network Conference ...................................................................................................... 87
Call Park .............................................................................................................................. 89
Call Pickup .......................................................................................................................... 90
Anonymous Call ................................................................................................................. 95
Anonymous Call Rejection ................................................................................................ 96
Advanced Phone Features..................................................... 97
Busy Lamp Field (BLF) ....................................................................................................... 97
Call Recording .................................................................................................................... 99
Hot Desking ...................................................................................................................... 101
Intercom ............................................................................................................................ 103

Table of Contents
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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) .................................................................................... 111
Voice Mail ...................................................................................................................... 113
Message Waiting Indicator (MWI) ............................................................................. 114
Troubleshooting .....................................................................119
Regulatory Notices ................................................................129
Service Agreements ........................................................................................................ 129
Limitations of Liability ...................................................................................................... 129
Safety Instructions ............................................................................................................ 129
Appendix A - Time Zones......................................................131
Index ......................................................................................133

User Guide for the SIP-T21P IP Phone
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Overview
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This chapter provides the overview of the SIP-T21P IP phone. Topics include:
Hardware Component Instructions
Icon Instructions
LED Instructions
User Interfaces
Documentations
If you require additional information or assistance with your new phone, contact your
system administrator.
The main hardware components of the SIP-T21P IP phone are the LCD screen and the
keypad.

User Guide for the SIP-T21P IP Phone
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Hardware component instructions of the SIP-T21P IP phone are:
Item
Description
①
LCD Screen
Shows information about calls, messages, soft keys,
time, date and other relevant data:
• Call information —caller ID, call duration
• Icons (for example, )
• Missed call text or second incoming caller information
• Prompt text (for example, "Saving config file!")
• Time and date
②
Power Indicator LED
Indicates phone power status and phone status.
③
Line Keys
Use these keys to activate up to two accounts and assign
various features.
④
MESSAGE Key
Indicates and accesses voice mails.
⑤
HEADSET Key
Toggles the headset mode.
⑥
TRAN Key
Transfers a call to another party.
⑦
RD Key
Redials a previously dialed number.
⑧
Speakerphone Key
Toggles the hands-free speakerphone mode.
⑨
Volume Key
Adjusts the volume of the handset, headset, speaker,
and ringer.
⑩
Keypad
Provides the digits, letters and special characters in
context-sensitive applications.
⑪
Scroll through the displayed information.
Confirms actions or answers incoming calls.
Cancels actions, rejects incoming calls, mutes or
un-mutes calls.
⑫
Soft Keys
Label automatically to identity their context-sensitive
features.

Overview
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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
letters input mode
Voice Mail
Text Message
Auto Answer
Do Not Disturb
Call Forwarded/Forwarded Calls
Call Hold
Call Mute
Ringer volume is 0

User Guide for the SIP-T21P IP Phone
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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
LED Status
Description
Solid green
The line is in conversation.
The line is seized.
Fast flashing green
The line receives an incoming call.
Slow flashing green
The call is placed on hold.
Off
The line is inactive.
Line key LED (configured as BLF key)
LED Status
Description
Solid green
The monitored user is busy.
Fast flashing green
The monitored user receives an incoming call.
Off
The monitored user is idle.
The monitored user does not exist.

Overview
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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. In addition, you can use the web user interface to
access all configuration settings. In many cases, either the phone user interface and/or
the web user interface interchangeably. However, in some cases, it is only possible to
use one or the other interface to operate the phone and change settings.
You can customize your phone by pressing the Menu soft key to access the phone user
interface. The Advanced Settings option is only accessible to the administrator, and the
default administrator password is “admin”(case-sensitive). For more information on
customizing your phone with the available options from the phone user interface, refer
to Customizing Your Phone on page 17.
In addition to the phone user interface, you can also customize your phone via web user
interface. In order to access the web user interface, you need to know the IP address of
your new phone. To obtain the IP address, press the OK key on the phone. Enter the IP
address (e.g., http://192.168.0.10 or 192.168.0.10) in the address bar of web browser on
your PC. The default administrator user name and password are both “admin”
(case-sensitive).
The options you can use to customize the IP phone via phone user interface and/or via
web user interface are listed in the following table:
Options
Phone User Interface
Web User Interface
Status
√
√
--IP Address
--IPv6
--MAC
--Firmware
--Network
--Phone
--Accounts
Basic Phone Settings

User Guide for the SIP-T21P IP Phone
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Options
Phone User Interface
Web User Interface
--Contrast
√
√
--Language
√
√
--Time & Date
√
√
--Administrator Password
√
√
--Key as Send
√
√
--Keypad Lock
√
√
-- Volume
√
--Ring Tones
√
√
--Contact Management
--Directory
√
--Local Directory
√
√
--Blacklist
√
√
--Remote Phone Book
√
--Call History Management
√
√
--Logo Customization
√
--Headset Prior
√
--DSS Keys
√
√
--Account Registration
√
√
--Dial Plan
√
--Emergency Number
√
--Live Dialpad
√
--Hotline
√
√
Basic Call Features
√
--Recent Call In Dialing
--Auto Answer
√
--Auto Redial
√
--Call Completion
√
--Call Return
√
--DND
√
--Call Forward
√
--Call Transfer
√
--Call Waiting
√
--Conference
--Call Park
√
--Call Pickup
√
--Anonymous Call
√
--Anonymous Call Rejection
√
Advanced Phone Features
√
--BLF
√
--Call Recording
√
--Hot Desking
√

Overview
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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
√
--SIP Server1/2
√
--Server Option
--Server Port
--Outbound Status
√
--Outbound Proxy
√
--NAT Traversal
--STUN Status
√
--STUN Server
√
Note
The table above lists most of the feature options. Please refer to the relevant sections for
more information.

User Guide for the SIP-T21P IP Phone
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The following table shows documentations available for the SIP-T21P IP phone.
Name
Contents
Where found
Format/Language
Quick Installation
Guide
Basic setup of the
phone
In the
package
PDF/English
Quick Reference
Guide
Basic call features and
phone customizations
In the
package
PDF/English
User Guide
Phone/Web user
interface settings
Basic call features and
advanced phone
features
CD attached
in the
package
PDF/English
Note
You can also download the latest documentations online:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.

Getting Started
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This chapter provides basic installation instructions and information for obtaining the
best performance with the SIP-T21P IP phone. Topics include:
Packaging Contents
Phone Installation
Phone Initialization
Phone Status
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

User Guide for the SIP-T21P IP Phone
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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
administrator.