Yealink SIP-T2 SERIES, SIP-T19 E2/T4 SERIES, SIP-T19P E2/T4 SERIES, CD860 Administrator's Manual
Hereby, Yealink(Xiamen) Network Technology CO., LTD. declares that this phone is in
conformity with the essential requirements and other relevant provisions of the CE, FCC.
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SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND
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Statements of compliance can be obtained by contacting support@yealink.com.
For SIP-T48G/T46G/T42G/T41P/T40P/T29G/T27P/T23P/T23G/T21(P) E2/T19(P) E2/CP860 IP phones:
This device is marked with the CE mark in compliance with EC Directives 2014/35/EU, 2014/30/EU.
For SIP VP-T49G IP phones:
This device is marked with the CE mark in compliance with R&TTE Directive 1999/5/EC.
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.
Any Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.
This device complies 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.
We are striving to improve our documentation quality and we appreciate your feedback. Email
your opinions and comments to DocsFeedback@yealink.com.
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:
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About This Guide
Convention
Description
Bold
Highlights the web/phone user interface items such as
menus, menu selections, soft keys, or directory names when
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 VP-T49G, SIP-T48G, SIP-T46G, SIP-T42G, SIP-T41P, SIP-T40P, SIP-T29G,
SIP-T27P, SIP-T23P/G, SIP-T21(P) E2, SIP-T19(P) E2 and CP860 IP phones. The following
related documents are available:
Quick Start Guides, which describe how to assemble IP phones and configure 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.
Description of Configuration Parameters in CFG Files, which describes all
configuration parameters in 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://support.yealink.com/.
Yealink documentations contain a few typographic conventions.
You need to know the following basic typographic conventions to distinguish types of
in-text information:
v
Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Convention
Description
they are involved in a procedure or user action (e.g., Click on
Settings->Upgrade.).
Also used to emphasize text (e.g., Important!).
Italics
Used to show the format of examples (e.g.,
http(s)://[IPv6
address]
), or to show the title of a section in the reference
documentations available on the Yealink Technical Support
Website (e.g.,
Triggering the IP phone to Perform the Auto
Provisioning
).
Blue Text
Used for cross references to other sections within this
documentation (e.g., refer to Ring Tones on page 765), for
hyperlinks to non-Yealink websites (e.g., RFC 3315) or for
hyperlinks to Yealink Technical Support website.
Blue Text in Italics
Used for hyperlinks to Yealink resources outside of this
documentation such as the Yealink documentations (e.g.,
Yealink_SIP-T2 Series_T19(P) E2_T4
Series_CP860_W56P_IP_Phones_Auto_Provisioning_Guide
).
The information detailed in this guide is applicable to firmware version 80 or higher. The
firmware format is like x.x.x.x.rom. The second x from left must be greater than or equal
to 80 (e.g., the firmware version of SIP-T23G IP phone: 44.80.0.60.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,
configuration methods and resource files.
Chapter 3, ―Configuring Basic Features‖ describes how to configure the basic
features on IP phones.
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 Video Features‖ describes how to configure the video
features on IP phones.
Chapter 7, ―Configuring Security Features‖ describes how to configure the security
features on IP phones.
Chapter 8, ―Troubleshooting‖ describes how to troubleshoot IP phones and
provides some common troubleshooting solutions.
vi
About This Guide
Chapter 9, ―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.
The following sections are new for this version:
Site Name on page 136
Idle Clock on page 137
SIP IP Call on page 166
Cloud on page 168
Major updates have occurred to the following sections:
Reading Icons on page 38
IP Direct Auto Answer on page 311
Allow IP Call on page 314
DTMF on page 455
NAT Traversal on page 732
Rport on page 743
Audio Codecs on page 794
Video Codecs on page 828
Secure Real-Time Transport Protocol on page 861
Appendix F: Configurations Defined Never be Saved to <MAC>-local.cfg file on
page 959
The following section is new for this version:
Power Saving on page 124
Major updates have occurred to the following sections:
Reading Icons on page 38
Screen Saver on page 117
NTP Time Serveron page 179
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Key As Send on page 236
Call Park on page 436
DTMF on page 455
Ring Tones on page 765
Power and Startup Issues on page 931
Appendix C: Trusted Certificates on page 938
Major updates have occurred to the following sections:
Transport Layer Security on page 850
Appendix C: Trusted Certificates on page 938
The following section is new for this version:
Onscreen Keyboard Input Method Customization on page 211
Major updates have occurred to the following sections:
Reading Icons on page 38
Obtaining Configuration Files and Resource Files on page 52
Configuring Transmission Methods of the Internet Port and PC Port on page 87
Wi-Fi on page 141
Customizing Softkey Layout Template File on page 226
Customizing a Local Contact File (Color Screen Phones) on page 278
Recent Call In Dialing on page 426
Bandwidth on page 500
External Monitor on page 506
Shared Call Appearance (SCA) on page 564
VQ-RTCPXR on page 703
Sending Volume on page 791
Audio Codecs on page 794
Video Codecs on page 828
Appendix F: Configurations Defined Never be Saved to <MAC>-local.cfg file on
page 959
viii
About This Guide
The following section is new for this version:
Exporting All the Diagnostic Files on page 913
Major updates have occurred to the following sections:
Expansion Module on page 17
Connecting the Handset and Optional Headset (not Applicable to CP860 IP Phones)
on page 28
Connecting the Power and Network on page 30
Configuring Transmission Methods of the Internet Port and PC Port on page 87
Backlight on page 131
Incoming Intercom Calls on page 477
Busy Lamp Field (BLF) on page 532
Voice Quality Monitoring on page 700
Sending Volume on page 791
Capturing Packets on page 900
Major updates have occurred to the following sections:
Verifying Startup on page 37
Reading Icons on page 38
Incoming Intercom Calls on page 477
Documentations of the newly released SIP VP-T49G IP phones have also been added.
The following sections are new for this version:
Answer By Hand on page 499
Bandwidth on page 500
Screenshot and Recording on page 503
Reserved Ports on page 727
Configuring Video Features on page 819
Getting Information from Talk Statistics on page 908
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Major updates have occurred to the following sections:
Connecting the IP Phones on page 19
Wi-Fi on page 141
Customizing Softkey Layout Template File on page 226
Customizing a Directory Template File on page 263
Voice Quality Monitoring on page 700
Quality of Service on page 721
TR-069 Device Management on page 748
Audio Codecs on page 794
Capturing Packets on page 900
Troubleshooting Solutions on page 914
Appendix B: Time Zones on page 937
Appendix F: Configurations Defined Never be Saved to <MAC>-local.cfg file on
page 959
This version is updated to incorporate CP860 IP phones. Documentations of the newly
released SIP-T40P IP phones have also been added. The following sections are new for
this version:
Conventions Used in Yealink Documentations on page v
Wi-Fi on page 141
Major updates have occurred to the following sections:
Expansion Module on page 17
Bluetooth on page 138
Auto Answer on page 304
Session Timer on page 356
Dialog Info Call Pickup on page 423
Methods of Transmitting DTMF Digit on page 456
Busy Lamp Field (BLF) on page 532
Multicast Paging on page 587
Action URI on page 645
VPN on page 695
Quality of Service on page 721
NAT Traversal on page 732
x
About This Guide
IPv6 Support on page 754
Distinctive Ring Tones on page 771
Viewing Log Files on page 883
Troubleshooting Solutions on page 914
Appendix F: Configurations Defined Never be Saved to <MAC>-local.cfg file on
page 959
Documentations of the newly released SIP-T19(P) E2 IP phones have also been added.
The following sections are new for this version:
Ringing Timeout on page 481
Shared Call Appearance (SCA) on page 564
Bridge Lines Appearance (BLA) on page 577
Short Message Service (SMS) on page 586
Appendix F: Configurations Defined Never be Saved to <MAC>-local.cfg file on
page 959
Major updates have occurred to the following sections:
Documentations on page v
Expansion Module on page 15
Reading Icons on page 38
Configuration Files on page 48
Obtaining Configuration Files and Resource Files on page 52
Account on page 153
Auto Answer on page 304
Do Not Disturb (DND) on page 330
Return Code When Refuse on page 348
Call Forward on page 366
LDAP on page 517
Action URL on page 626
Action URI on page 645
Server Redundancy on page 655
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
The following sections are new for this version:
Expansion Module on page 15
Obtaining Configuration Files and Resource Files on page 52
DHCP Option on page 73
Bluetooth on page 138
Enable Page Tips on page 149
Label Length on page 151
Account on page 153
Display Method on Dialing on page 173
Redial Tone on page 298
Ringer Device for Headset on page 300
IP Direct Auto Answer on page 311
Allow IP Call on page 314
Accept SIP Trust Server Only on page 316
Transfer Mode via Dsskey on page 397
Allow Trans Exist Call on page 398
Call Number Filter on page 434
Call Timeout on page 481
Send user=phone on page 481
SIP Send MAC on page 484
SIP Send Line on page 486
Reserve # in User Name on page 489
Password Dial on page 491
Unregister When Reboot on page 493
100 Reliable Retransmission on page 495
Reboot in Talking on page 497
xii
Logon Wizard on page 622
Auto-Logout Time on page 837
Appendix E: Auto Provisioning Flowchart (Keep user personalized configuration
settings) on page 958
Major updates have occurred to the following sections:
DHCP on page 68
Time and Date on page 178
Language on page 196
Input Method on page 207
Logo Customization on page 220
Softkey Layout on page 224
Dial Plan on page 241
Directory on page 263
Search Source in Dialing on page 266
Local Directory on page 275
SIP Session Timer on page 353
Call Hold on page 359
DTMF on page 455
Remote Phone Book on page 510
About This Guide
VLAN on page 681
Network Address Translation on page 730
Comfort Noise Generation on page 812
Phone Lock on page 838
Troubleshooting Methods on page 883
Troubleshooting Solutions on page 914
This version is updated to incorporate SIP-T48G IP phones. Documentations of the newly
released SIP-T27P and SIP-T21(P) E2 IP phones have also been added.
Major updates have occurred to the following sections:
Reading Icons on page 37
Configuration Files on page 48
Backlight on page 131
Time and Date on page 177
Auto Answer on page 304
Return Code When Refuse on page 348
DTMF on page 455
Phone Lock on page 838
Appendix B: Time Zones on page 937
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
This version is updated to incorporate SIP-T46G, SIP-T42G, SIP-T41P and SIP-T29G IP
phones. The following sections are new for this version:
Wallpaper on page 112
Hide Features Access Code on page 555
Major updates have occurred to the following sections:
DHCP on page 68
Call Display on page 169
Input Method on page 207
BLF List on page 545
IPv6 Support on page 754
Viewing Log Files on page 883
xiv
Table of Contents
About This Guide ...................................................................... v
Documentations ............................................................................................................................... v
Conventions Used in Yealink Documentations ............................................................................. v
In This Guide ................................................................................................................................... vi
Summary of Changes ................................................................................................................... vii
Changes for Release 80, Guide Version 80.131 ................................................................... vii
Changes for Release 80, Guide Version 80.130 ................................................................... vii
Changes for Release 80, Guide Version 80.95 .................................................................... viii
Changes for Release 80, Guide Version 80.91 .................................................................... viii
Changes for Release 80, Guide Version 80.90 ...................................................................... ix
Changes for Release 80, Guide Version 80.82 ...................................................................... ix
Changes for Release 80, Guide Version 80.81 ...................................................................... ix
Changes for Release 80, Guide Version 80.80 ....................................................................... x
Changes for Release 80, Guide Version 80.60 ...................................................................... xi
Changes for Release 80, Guide Version 80.21 ..................................................................... xii
Changes for Release 80, Guide Version 80.20 .................................................................... xiii
Changes for Release 80, Guide Version 80.6 ...................................................................... xiv
Table of Contents ................................................................... xv
Product Overview ..................................................................... 1
VoIP Principle .................................................................................................................................... 1
SIP Components............................................................................................................................... 2
SIP IP Phone Models ........................................................................................................................ 3
Physical Features of IP Phones ................................................................................................ 4
Key Features of IP Phones ...................................................................................................... 15
Expansion Module ......................................................................................................................... 17
Getting Started ....................................................................... 19
Connecting the IP Phones ............................................................................................................. 19
Attaching the Stand and the Optional Wall Mount Bracket (not Applicable to CP860 IP
Phones) .................................................................................................................................... 20
Inserting the Camera (Only Applicable to SIP VP-T49G IP Phones) ................................... 27
Connecting the Handset and Optional Headset (not Applicable to CP860 IP Phones) . 28
Connecting the Power and Network .................................................................................... 30
Connecting the Optional Extension Microphones (Only Applicable to CP860 IP Phones)
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
.................................................................................................................................................. 32
Connecting the Optional USB Flash Drive (Only Applicable to SIP VP-T49G and CP860 IP
Phones) .................................................................................................................................... 33
Connecting the Optional PC or Mobile Device (Only Applicable to CP860 IP Phones) .. 34
Connecting the Optional External Monitor (Only Applicable to SIP VP-T49G IP Phones) 35
Initialization Process Overview .................................................................................................... 36
Verifying Startup ............................................................................................................................ 37
Reading Icons ................................................................................................................................ 38
Configuration Methods ................................................................................................................. 48
Phone User Interface.............................................................................................................. 48
Web User Interface ................................................................................................................ 48
Configuration Files.................................................................................................................. 48
Obtaining Configuration Files and Resource Files ..................................................................... 52
Keep User Personalized Settings ................................................................................................. 55
Configuration Parameters...................................................................................................... 55
Scenario A Keep user personalized configuration settings ............................................... 57
Scenario B Clear user personalized configuration settings ............................................... 61
Scenario C Keep user personalized settings after factory reset ....................................... 62
Scenario D Import or export the local configuration file .................................................... 64
Provisioning Server ........................................................................................................................ 66
Supported Provisioning Protocols ......................................................................................... 66
Setting up the Provisioning Server ........................................................................................ 66
Deploying Phones from the Provisioning Server ................................................................. 67
Configuring Basic Network Parameters ...................................................................................... 68
DHCP ....................................................................................................................................... 68
DHCP Option ........................................................................................................................... 73
Configuring Network Parameters Manually ........................................................................ 79
PPPoE ....................................................................................................................................... 84
Configuring Transmission Methods of the Internet Port and PC Port ................................. 87
Configuring PC Port Mode ..................................................................................................... 91
Upgrading Firmware ..................................................................................................................... 93
Upgrading Firmware via Web User Interface ..................................................................... 94
Upgrading Firmware from the Provisioning Server ............................................................ 94
Configuring Basic Features ...................................................101
Power Indicator LED .................................................................................................................... 103
Notification Popups ...................................................................................................................... 108
Contrast ........................................................................................................................................ 111
Wallpaper ..................................................................................................................................... 113
Screen Saver ................................................................................................................................ 117
Power Saving ............................................................................................................................... 124
Backlight ....................................................................................................................................... 131
Site Name ..................................................................................................................................... 136
Idle Clock...................................................................................................................................... 137
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Table of Contents
Bluetooth ...................................................................................................................................... 138
Wi-Fi .............................................................................................................................................. 141
Enable Page Tips ......................................................................................................................... 150
Label Length................................................................................................................................. 151
Account Settings .......................................................................................................................... 153
SIP Account ........................................................................................................................... 153
SIP IP Call............................................................................................................................... 166
Cloud ............................................................................................................................................ 168
Call Display .................................................................................................................................. 169
Display Method on Dialing ......................................................................................................... 173
Web Server Type.......................................................................................................................... 175
Time and Date ............................................................................................................................. 178
NTP Time Server ................................................................................................................... 179
Time and Date Settings ....................................................................................................... 185
Daylight Saving Time ........................................................................................................... 189
Language ..................................................................................................................................... 196
Loading Language Packs .................................................................................................... 197
Specifying the Language to Use......................................................................................... 204
Input Method ............................................................................................................................... 207
Keypad Input Method Customization ................................................................................ 207
Onscreen Keyboard Input Method Customization ........................................................... 211
Specifying the Default Input Method ................................................................................. 219
Logo Customization ..................................................................................................................... 220
Customizing a Logo Template File ...................................................................................... 221
Configuring the Logo Shown on the Idle Screen ............................................................... 222
Softkey Layout.............................................................................................................................. 224
Customizing Softkey Layout Template File ......................................................................... 226
Key As Send ................................................................................................................................. 236
Dial Plan........................................................................................................................................ 241
Replace Rule ......................................................................................................................... 242
Dial-now ................................................................................................................................ 247
Area Code............................................................................................................................. 253
Block Out ............................................................................................................................... 256
Hotline .......................................................................................................................................... 258
Off Hook Hot Line Dialing ........................................................................................................... 261
Directory ....................................................................................................................................... 263
Customizing a Directory Template File ............................................................................... 263
Search Source in Dialing............................................................................................................. 266
Customizing a Super Search Template File ....................................................................... 266
Save Call Log ............................................................................................................................... 269
Call List Show Number ................................................................................................................ 271
Missed Call Log ........................................................................................................................... 273
Local Directory ............................................................................................................................. 275
Customizing a Local Contact File ........................................................................................ 275
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Live Dialpad ................................................................................................................................. 292
Call Waiting .................................................................................................................................. 294
Redial Tone ................................................................................................................................... 298
Ringer Device for Headset ......................................................................................................... 300
Auto Redial ................................................................................................................................... 302
Auto Answer ................................................................................................................................. 304
IP Direct Auto Answer .................................................................................................................. 311
Allow IP Call ................................................................................................................................. 314
Accept SIP Trust Server Only ...................................................................................................... 316
Call Completion ........................................................................................................................... 318
Anonymous Call ........................................................................................................................... 321
Anonymous Call Rejection .......................................................................................................... 326
Do Not Disturb (DND) .................................................................................................................. 330
Busy Tone Delay ........................................................................................................................... 346
Return Code When Refuse .......................................................................................................... 348
Early Media .................................................................................................................................. 349
180 Ring Workaround .................................................................................................................. 350
Use Outbound Proxy in Dialog ................................................................................................... 351
SIP Session Timer ......................................................................................................................... 353
Session Timer ............................................................................................................................... 356
Call Hold ....................................................................................................................................... 359
Music on Hold ....................................................................................................................... 363
Call Forward ................................................................................................................................ 366
Call Transfer ................................................................................................................................. 388
Network Conference ................................................................................................................... 391
Feature Key Synchronization ...................................................................................................... 393
Transfer on Conference Hang Up .............................................................................................. 395
Transfer Mode via Dsskey ........................................................................................................... 397
Allow Trans Exist Call ................................................................................................................... 398
Directed Call Pickup .................................................................................................................... 400
Group Call Pickup ........................................................................................................................ 412
Dialog Info Call Pickup ................................................................................................................ 423
Recent Call In Dialing .................................................................................................................. 426
ReCall ............................................................................................................................................ 428
Call Number Filter ........................................................................................................................ 434
Call Park ....................................................................................................................................... 436
Calling Line Identification Presentation ..................................................................................... 448
Connected Line Identification Presentation .............................................................................. 453
DTMF ............................................................................................................................................. 455
Methods of Transmitting DTMF Digit .................................................................................. 456
Suppress DTMF Display ....................................................................................................... 464
Transfer via DTMF ................................................................................................................. 466
Play Local DTMF Tone .......................................................................................................... 468
Allow Mute ................................................................................................................................... 470
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Table of Contents
Intercom ........................................................................................................................................ 471
Outgoing Intercom Calls ...................................................................................................... 472
Incoming Intercom Calls ...................................................................................................... 477
Call Timeout ................................................................................................................................. 481
Ringing Timeout ........................................................................................................................... 481
Send user=phone ....................................................................................................................... 482
SIP Send MAC .............................................................................................................................. 484
SIP Send Line ................................................................................................................................ 486
Reserve # in User Name ............................................................................................................. 489
Password Dial............................................................................................................................... 491
Unregister When Reboot ............................................................................................................. 493
100 Reliable Retransmission ....................................................................................................... 495
Reboot in Talking .......................................................................................................................... 497
Answer By Hand .......................................................................................................................... 499
Bandwidth .................................................................................................................................... 500
Screenshot and Recording ......................................................................................................... 503
Screenshot ............................................................................................................................ 503
Call and Conference Recording (for SIP VP-T49G IP Phones) ........................................... 504
Call and Conference Recording (for CP860 IP Phones) .................................................... 506
External Monitor .......................................................................................................................... 506
Configuring Advanced Features...........................................509
Remote Phone Book .................................................................................................................... 510
Customizing Remote Phone Book Template File................................................................ 510
LDAP .............................................................................................................................................. 517
Busy Lamp Field (BLF) ................................................................................................................. 532
BLF List .......................................................................................................................................... 547
Hide Features Access Code ....................................................................................................... 555
Automatic Call Distribution (ACD) ............................................................................................. 557
Shared Call Appearance (SCA) ................................................................................................ 564
Bridge Lines Appearance (BLA) ................................................................................................ 577
Message Waiting Indicator ........................................................................................................ 580
Short Message Service (SMS) ................................................................................................... 586
Multicast Paging .......................................................................................................................... 587
Sending RTP Stream ............................................................................................................. 587
Receiving RTP Stream .......................................................................................................... 601
Call Recording ............................................................................................................................. 606
Hot Desking .................................................................................................................................. 614
Logon Wizard ............................................................................................................................... 622
Action URL .................................................................................................................................... 626
Action URI ..................................................................................................................................... 645
Configuring Trusted IP Address for Action URI ................................................................... 650
Scenario A - Capturing the Current Screen of the Phone ................................................. 653
Scenario B - Placing a Call via Web User Interface .......................................................... 654
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Server Redundancy ..................................................................................................................... 655
Server Domain Name Resolution ........................................................................................ 669
Static DNS Cache ........................................................................................................................ 673
VLAN ............................................................................................................................................. 681
LLDP ....................................................................................................................................... 682
CDP ........................................................................................................................................ 685
Manual Configuration for VLAN in the Wired Network..................................................... 688
DHCP VLAN ........................................................................................................................... 692
Configuring VLAN Feature in the Wireless Network.......................................................... 695
VPN ................................................................................................................................................ 697
Voice Quality Monitoring ............................................................................................................ 700
RTCP-XR .................................................................................................................................. 701
VQ-RTCPXR ............................................................................................................................ 703
Quality of Service ........................................................................................................................ 721
Configuring the IP phone for Use with a Firewall or NAT ......................................................... 727
Reserved Ports ...................................................................................................................... 727
Network Address Translation .............................................................................................. 730
Real-Time Transport Protocol ....................................................................................................... 746
TR-069 Device Management ...................................................................................................... 748
IPv6 Support ................................................................................................................................. 754
Configuring Audio Features ..................................................765
Ring Tones .................................................................................................................................... 765
Distinctive Ring Tones .................................................................................................................. 771
Tones ............................................................................................................................................. 778
Voice Mail Tone ............................................................................................................................ 786
Headset Prior ............................................................................................................................... 787
Dual Headset ............................................................................................................................... 789
Sending Volume ........................................................................................................................... 791
Audio Codecs .............................................................................................................................. 794
Acoustic Clarity Technology ........................................................................................................ 809
Acoustic Echo Cancellation ................................................................................................. 809
Background Noise Suppression .......................................................................................... 810
Automatic Gain Control ....................................................................................................... 810
Voice Activity Detection ....................................................................................................... 811
Comfort Noise Generation .................................................................................................. 812
Jitter Buffer ............................................................................................................................ 814
Configuring Video Features ..................................................819
Video Settings .............................................................................................................................. 819
Video Codecs............................................................................................................................... 828
Configuring Security Features ...............................................833
xx
Table of Contents
User Password ............................................................................................................................. 833
Administrator Password .............................................................................................................. 835
Auto-Logout Time ......................................................................................................................... 837
Phone Lock ................................................................................................................................... 838
Transport Layer Security .............................................................................................................. 850
Secure Real-Time Transport Protocol .......................................................................................... 861
Encrypting Configuration Files ................................................................................................... 866
802.1X Authentication ................................................................................................................. 871
Troubleshooting .....................................................................883
Troubleshooting Methods ........................................................................................................... 883
Viewing Log Files .................................................................................................................. 883
Capturing Packets ................................................................................................................ 900
Enabling Watch Dog Feature .............................................................................................. 906
Getting Information from Status Indicators ........................................................................ 908
Getting Information from Talk Statistics.............................................................................. 908
Analyzing Configuration File ............................................................................................... 909
Exporting All the Diagnostic Files ........................................................................................ 913
Troubleshooting Solutions ........................................................................................................... 914
IP Address Issues .................................................................................................................. 914
Time and Date Issues ........................................................................................................... 915
Display Issues ....................................................................................................................... 915
Phone Book Issues ................................................................................................................ 916
Audio Issues .......................................................................................................................... 916
Camera and Video Issues ................................................................................................... 917
Wi-Fi and Bluetooth Issues ................................................................................................... 918
Firmware and Upgrading Issues ........................................................................................ 919
Provisioning Issues ................................................................................................................ 920
System Log Issues................................................................................................................. 921
Resetting Issues .................................................................................................................... 921
Rebooting Issues ................................................................................................................... 925
Protocols and Ports Issues .................................................................................................... 928
Password Issues .................................................................................................................... 931
Logo Issues ............................................................................................................................ 931
Power and Startup Issues .................................................................................................... 931
Hardware Issues ................................................................................................................... 932
Other Issues .......................................................................................................................... 933
Appendix ...............................................................................935
Appendix A: Glossary ................................................................................................................. 935
Appendix B: Time Zones ............................................................................................................. 937
Appendix C: Trusted Certificates ............................................................................................... 938
Appendix D: Configuring DSS Key ............................................................................................. 940
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Appendix E: Auto Provisioning Flowchart (Keep user personalized configuration settings)958
Appendix F: Configurations Defined Never be Saved to <MAC>-local.cfg file .................. 959
Appendix G: SIP (Session Initiation Protocol) ........................................................................... 967
RFC and Internet Draft Support .......................................................................................... 967
SIP Request ............................................................................................................................ 970
SIP Header ............................................................................................................................ 971
SIP Responses ....................................................................................................................... 974
SIP Session Description Protocol (SDP) Usage .................................................................. 976
Appendix H: SIP Call Flows ........................................................................................................ 977
Successful Call Setup and Disconnect ............................................................................... 977
Unsuccessful Call Setup—Called User is Busy .................................................................. 980
Unsuccessful Call Setup—Called User Does Not Answer ................................................ 982
Successful Call Setup and Call Hold .................................................................................. 984
Successful Call Setup and Call Waiting ............................................................................. 987
Call Transfer without Consultation ...................................................................................... 991
Call Transfer with Consultation ............................................................................................ 995
Always Call Forward .......................................................................................................... 1000
Busy Call Forward .............................................................................................................. 1003
No Answer Call Forward ................................................................................................... 1006
Call Conference .................................................................................................................. 1009
Index .................................................................................... 1014
xxii
This chapter contains the following information about IP phones:
VoIP Principle
SIP Components
SIP IP Phone Models
Expansion Module
VoIP
Product Overview
VoIP (Voice over Internet Protocol) is a technology using the Internet Protocol instead of
traditional Public Switch Telephone Network (PSTN) technology for voice
communications.
It is a family of technologies, methodologies, communication protocols, and
transmission techniques for the delivery of voice communications and multimedia
sessions over IP networks. The H.323 and Session Initiation Protocol (SIP) are two
popular VoIP protocols that are found in widespread implementation.
H.323
H.323 is a recommendation from the ITU Telecommunication Standardization Sector
(ITU-T) that defines the protocols to provide audio-visual communication sessions on
any packet network. The H.323 standard addresses call signaling and control,
multimedia transport and control, and bandwidth control for point-to-point and
multi-point conferences.
It is widely implemented by voice and video conference equipment manufacturers, is
used within various Internet real-time applications such as GnuGK and NetMeeting and
is widely deployed by service providers and enterprises for both voice and video
services over IP networks.
SIP
SIP (Session Initiation Protocol) is the Internet Engineering Task Force’s (IETF’s) standard
for multimedia conferencing over IP. It is an ASCII-based, application-layer control
protocol (defined in RFC 3261) that can be used to establish, maintain, and terminate
calls between two or more endpoints. Like other VoIP protocols, SIP is designed to
address functions of signaling and session management within a packet telephony
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
network. Signaling allows call information to be carried across network boundaries.
Session management provides the ability to control attributes of an end-to-end call.
SIP provides capabilities to:
Determine the location of the target endpoint -- SIP supports address resolution,
name mapping, and call redirection.
Determine media capabilities of the target endpoint -- Via Session Description
Protocol (SDP), SIP determines the ―lowest level‖ of common services between
endpoints. Conferences are established using only media capabilities that can be
supported by all endpoints.
Determine the availability of the target endpoint -- A call cannot be completed
because the target endpoint is unavailable, SIP determines whether the called
party is already on the IP phone or does not answer in the allotted number of rings.
It then returns a message indicating why the target endpoint is unavailable.
Establish a session between the origin and target endpoint -- The call can be
completed, SIP establishes a session between endpoints. SIP also supports mid-call
changes, such as the addition of another endpoint to the conference or the change
of a media characteristic or codec.
Handle the transfer and termination of calls -- SIP supports the transfer of calls from
one endpoint to another. During a call transfer, SIP simply establishes a session
between the transferee and a new endpoint (specified by the transferring party)
and terminates the session between the transferee and the transferring party. At
the end of a call, SIP terminates the sessions between all parties.
SIP is a peer-to-peer protocol. The peers in a session are called User Agents (UAs). A
user agent can function as one of following roles:
User Agent Client (UAC) -- A client application that initiates the SIP request.
User Agent Server (UAS) -- A server application that contacts the user when a SIP
request is received and that returns a response on behalf of the user.
User Agent Client (UAC)
The UAC is an application that initiates up to six feasible SIP requests to the UAS. The six
requests issued by the UAC are: INVITE, ACK, OPTIONS, BYE, CANCEL and REGISTER.
When the SIP session is being initiated by the UAC SIP component, the UAC determines
the information essential for the request, which is the protocol, the port and the IP
address of the UAS to which the request is being sent. This information can be dynamic
and will make it challenging to put through a firewall. For this reason, it may be
recommended to open the specific application type on the firewall. The UAC is also
capable of using the information in the request URI to establish the course of the SIP
2
Product Overview
request to its destination, as the request URI always specifies the host which is essential.
The port and protocol are not always specified by the request URI. Thus if the request
does not specify a port or protocol, a default port or protocol is contacted. It may be
preferential to use this method when not using an application layer firewall. Application
layer firewalls like to know what applications are flowing through which ports and it is
possible to use content types of other applications other than the one you are trying to
let through what has been denied.
User Agent Server (UAS)
UAS is a server that hosts the application responsible for receiving the SIP requests from
a UAC, and on reception it returns a response to the request back to the UAC. The UAS
may issue multiple responses to the UAC, not necessarily a single response.
Communication between UAC and UAS is client/server and peer-to–peer.
Typically, a SIP endpoint is capable of functioning as both a UAC and a UAS, but it
functions only as one or the other per transaction. Whether the endpoint functions as a
UAC or a UAS depends on the UA that initiates the request.
This section introduces SIP VP-T49G, SIP-T48G, SIP-T46G, SIP-T42G, SIP-T41P, SIP-T40P,
SIP-T29G, SIP-T27P, SIP-T23P/G, SIP-T21(P) E2, SIP-T19(P) E2 and CP860 IP phone models.
These IP phones are endpoints in the overall network topology, which are designed to
interoperate with other compatible equipments including application servers, media
servers, internet-working gateways, voice bridges, and other endpoints. These IP
phones are characterized by a large number of functions, which simplify business
communication with a high standard of security and can work seamlessly with a large
number of SIP PBXs.
IP phones provide a powerful and flexible IP communication solution for Ethernet TCP/IP
networks, delivering excellent voice quality. The high-resolution graphic display
supplies content in multiple languages for system status, call log and directory access.
IP phones also support advanced functionalities, including LDAP, Busy Lamp Field, Sever
Redundancy and Network Conference.
IP phones comply with the SIP standard (RFC 3261), and they can only be used within a
network that supports this model of phone.
For a list of key features available on Yealink IP phones running the latest firmware, refer
to Key Features of IP Phones on page 15.
In order to operate as SIP endpoints in your network successfully, IP phones must meet
the following requirements:
A working IP network is established.
VoIP gateways are configured for SIP.
The latest (or compatible) firmware of IP phones is available.
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
A call server is active and configured to receive and send SIP messages.
This section lists the available physical features of SIP VP-T49G, SIP-T48G, SIP-T46G,
SIP-T42G, SIP-T41P, SIP-T40P, SIP-T29G, SIP-T27P, SIP-T23P/G, SIP-T21(P) E2, SIP-T19(P) E2 and
CP860 IP phones.
SIP VP-T49G
Physical Features:
- 8‖ 1280 x 800 pixel color touch screen with backlight
- 16 VoIP accounts, Broadsoft Validated/Asterisk
- HD Voice: HD Codec, HD Handset, HD Speaker
- 3-way video conference, 5-way mixing audio and video conference
- 21 dedicated hard keys
- 1*RJ9 (4P4C) handset port
- 1*RJ9 (4P4C) headset port
- Support Bluetooth headset and Bluetooth-Enabled mobile phone
- 2*RJ45 10/100/1000Mbps Ethernet ports
- 1*HDMI port
- 6 LEDs: 1*power, 1*mute, 1*headset, 1*speakerphone, 1*message, 1*camera
- Power adapter: AC 100~240V input and DC 12V/2A output
®
Compatible
- 1*Built-in USB2.0 port, support USB flash drive
4
- 1*Built-in USB3.0 port, support camera
- Built-in Wi-Fi, support 802.11a/b/g/n
SIP-T48G
Product Overview
Physical Features:
- 7‖ 800 x 480 pixel color touch screen with backlight
- 24 bit depth color
- 16 VoIP accounts, Broadsoft Validated/Asterisk
- HD Voice: HD Codec, HD Handset, HD Speaker
- 26 dedicated hard keys
- 1*RJ9 (4P4C) handset port
- 1*RJ9 (4P4C) headset port
- 2*RJ45 10/100/1000Mbps Ethernet ports
- 1*RJ12 (6P6C) expansion module port
- 4 LEDs: 1*power, 1*mute, 1*headset, 1*speakerphone
- Power adapter: AC 100~240V input and DC 5V/2A output
- Power over Ethernet (IEEE 802.3af)
®
Compatible
- Built-in USB port, support Bluetooth headset and Wi-Fi
- Wall Mount
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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
SIP-T46G
Physical Features:
- 4.3‖ 480 x 272 pixel color display with backlight
- 24 bit depth color
- 16 VoIP accounts, Broadsoft Validated/Asterisk
- HD Voice: HD Codec, HD Handset, HD Speaker
- 36 dedicated hard keys and 4 context-sensitive soft keys
- 1*RJ9 (4P4C) handset port
- 1*RJ9 (4P4C) headset port
- 2*RJ45 10/100/1000Mbps Ethernet ports
- 1*RJ12 (6P6C) expansion module port
- 14 LEDs: 1*power, 10*line, 1*mute, 1*headset, 1*speakerphone
- Power adapter: AC 100~240V input and DC 5V/2A output
- Power over Ethernet (IEEE 802.3af)
- Built-in USB port, support Bluetooth headset
- Wall Mount
®
Compatible
6
SIP-T42G
Product Overview
Physical Features:
- 192 x 64 graphic LCD
- 12 VoIP accounts, Broadsoft Validated/Asterisk
- HD Voice: HD Codec, HD Handset, HD Speaker
- 30 dedicated hard keys and 4 context-sensitive soft keys
- 1*RJ9 (4P4C) handset port
- 1*RJ9 (4P4C) headset port
- 2*RJ45 10/100/1000Mbps Ethernet ports
- 1*RJ12 (6P6C) EHS36 headset adapter port
- 10 LEDs: 1*power, 6*line, 1*mute, 1*headset, 1*speakerphone
- Power adapter: AC 100~240V input and DC 5V/1.2A output
- Power over Ethernet (IEEE 802.3af)
- Wall Mount
®
Compatible
7
Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
SIP-T41P
Physical Features:
- 192 x 64 graphic LCD
- 6 VoIP accounts, Broadsoft Validated/Asterisk
- HD Voice: HD Codec, HD Handset, HD Speaker
- 30 dedicated hard keys and 4 context-sensitive soft keys
- 1*RJ9 (4P4C) handset port
- 1*RJ9 (4P4C) headset port
- 2*RJ45 10/100Mbps Ethernet ports
- 1*RJ12 (6P6C) EHS36 headset adapter port
- 10 LEDs: 1*power, 6*line, 1*mute, 1*headset, 1*speakerphone
- Power adapter: AC 100~240V input and DC 5V/1.2A output
- Power over Ethernet (IEEE 802.3af)
- Wall Mount
®
Compatible
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