Yealink SIP-T2XP Service manual

Copyright © 2014 YEALINK NETWORK TECHNOLOGY
Copyright © 2014 Yealink Network Technology CO., LTD. All rights reserved. No parts of this
publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, photocopying, recording, or otherwise, for any purpose, without the express written
permission of Yealink Network Technology CO., LTD. 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.

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].

Yealink IP phone firmware contains third-party software under the GNU General Public License (GPL).
Yealink uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms and
conditions of the license.
The original GPL license, source code of components licensed under GPL and used in Yealink products can
be downloaded from Yealink web site:
http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.

About This Guide
v
This guide is intended for administrators who need to properly configure, customize,
manage, and troubleshoot the IP phone system rather than end-users. It provides
details on the functionality and configuration of IP phones.
Many of the features described in this guide involve network settings, which could affect
the IP phone’s performance in the network. So an understanding of IP networking and a
prior knowledge of IP telephony concepts are necessary.
This guide covers SIP-T28P, SIP-T26P, SIP-T22P, SIP-T21P, SIP-T20P and SIP-T19P IP phones. The
following related documents are available:
Quick Installation Guides, which describe how to assemble IP phones.
Quick Reference Guides, which describe the most basic features available on IP
phones.
User Guides, which describe the basic and advanced features available on IP
phones.
Auto Provisioning Guide, which describes how to provision IP phones using the
configuration files.
<y0000000000xx>.cfg and <MAC>.cfg template configuration files.
IP Phones Deployment Guide for BroadSoft UC-One Environments, which describes
how to configure BroadSoft features on the BroadWorks web portal and IP phones.
For support or service, please contact your Yealink reseller or go to Yealink Technical
Support online: http://www.yealink.com/Support.aspx.
The information detailed in this guide is applicable to firmware version 72 or higher. The
firmware format is like x.x.x.x.rom. The second x from left must be greater than or equal
to 72 (e.g., the firmware version of SIP-T28P IP phone: 2.72.0.1.rom). This administrator
guide includes the following chapters:
Chapter 1, “Product Overview” describes the SIP components and SIP IP phones.
Chapter 2, “Getting Started” describes how to install and connect IP phones and
the configuration methods.
Chapter 3, “Configuring Basic Features” describes how to configure the basic
features on IP phones.

Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
vi
Chapter 4, “Configuring Advanced Features” describes how to configure the
advanced features on IP phones.
Chapter 5, “Configuring Audio Features” describes how to configure the audio
features on IP phones.
Chapter 6, “Configuring Security Features” describes how to configure the security
features on IP phones.
Chapter 7, “Upgrading Firmware” describes how to upgrade firmware of IP
phones.
Chapter 8, “Resource Files” describes the resource files that can be downloaded
by IP phones.
Chapter 9, “Troubleshooting” describes how to troubleshoot IP phones and
provides some common troubleshooting solutions.
Chapter 10, “Appendix” provides the glossary, reference information about IP
phones compliant with RFC 3261, SIP call flows and the sample configuration files.
This section describes the changes to this guide for each release and guide version. For
more information on changes, refer to version-specific release notes of Yealink IP
phones online:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
The following section is new for this version:
Directory on page 75
Search Source in Dialing on page 77
Major updates have occurred to the following sections:
Transport Layer Security on page 223
The following section is new for this version:
Power Indicator LED on page 38
Major updates have occurred to the following sections:
DHCP on page 22
Replace Rule on page 68
Dial-now on page 69

About This Guide
vii
Contrast on page 40
Backlight on page 42
Time and Date on page 50
Key as Send on page 65
Anonymous Call on page 91
LDAP on page 150
Busy Lamp Field on page 153
Action URL on page 173
IPv6 Support on page 206
Transport Layer Security on page 223
Upgrading Firmware on page 34
Resource Files on page 238
Documentations of the newly released SIP-T19P and SIP-T21P IP phones have also been
added.
Major updates have occurred to the following sections:
Action URL on page 173
Action URI on page 176
Major updates have occurred to the following sections:
Logo Customization on page 59
Anonymous Call on page 91
Distinctive Ring Tones on page 141
Server Redundancy on page 179
Transport Layer Security on page 223
Secure Real-Time Transport Protocol on page 229
Encrypting Configuration Files on page 232
Local Contact File on page 244
Viewing Log Files on page 250

Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
viii
Capturing Packets on page 253
Major updates have occurred to the following section:
Appendix B: Time Zones on page 266
Major updates have occurred to the following section:
Configuring DSS Key on page 410
The following sections are new for this version:
Hot Desking on page 172
TR-069 Device Management on page 204
IPv6 Support on page 206
Major updates have occurred to the following sections:
Configuring Network Parameters Manually on page 25
Softkey Layout on page 62
Directed Call Pickup on page 119
Distinctive Ring Tones on page 141
Automatic Call Distribution on page 159
Action URL on page 176
Server Redundancy on page 179
VLAN on page 189
Transport Layer Security on page 223
Local Contact File on page 244
The following sections are new for this version:
Configuring Network Parameters Manually on page 25
Contrast on page 40
Backlight on page 42

About This Guide
ix
Logo Customization on page 59
Softkey Layout on page 62
Key as Send on page 65
Call Log on page 78
Live Dialpad on page 84
Auto Answer on page 88
Call Completion on page 90
Anonymous Call on page 91
Anonymous Call Rejection on page 93
Busy Tone Delay on page 99
Return Code When Refuse on page 100
Early Media on page 101
180 Ring Workaround on page 101
Use Outbound Proxy in Dialog on page 103
SIP Session Timer on page 104
Session Timer on page 105
Call Return on page 127
Transfer via DTMF on page 136
Intercom on page 137
Automatic Call Distribution on page 159
Message Waiting Indicator on page 162
Multicast Paging on page 164
Call Recording on page 168
LLDP on page 186
VLAN on page 189
VPN on page 192
Quality of Service on page 195
Configuring Audio Features on page 211
Secure Real-Time Transport Protocol on page 229
Appendix B: Time Zones on page 266
Phone user interface for each feature

Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
x
Major updates have occurred to the following sections:
Dial Plan on page 67
Transport Layer Security on page 223
Encrypting Configuration Files on page 232
Troubleshooting on page 250
Web user interface for each feature
The following sections are new for this version:
Dialog Info Call Pickup on page 125
Web Server Type on page 44
Tones on page 146
Hot Desking on page 172
Action URL on page 176
Action URI on page 176
Resource Files on page 238
Appendix D: Configuration Parameters on page 269
Appendix G: Sample Configuration File on page 482
Major updates have occurred to the following sections:
Dial Plan on page 67
Phone Lock on page 48
Time and Date on page 50
Busy Lamp Field on page 153