Yealink T48S, T42G, T41S, T41P, T48G Administrator's Manual

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Copyright

Copyright © 2018 YEALINK(XIAMEN) NETWORK TECHNOLOGY

Copyright © 2018 Yealink (Xiamen) 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,

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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 (Xiamen) Network Technology CO., LTD. will not be liable for any damages

arising from use of an illegally modified or altered publication.

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Yealink®, the logo and the name and marks is trademark of Yealink (Xiamen) Network Technology CO.,

LTD, which are registered legally in China, the United States, EU (European Union) and other countries.

All other trademarks belong to their respective owners. Without Yealink’s express written permission,

recipient shall not reproduce or transmit any portion hereof in any form or by any means, with any

purpose other than personal use.

Warranty

(1) Warranty

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.

(2) Disclaimer

YEALINK (XIAMEN) 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 (Xiamen) 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.

(3) Limitation of Liability

Yealink and/or its respective suppliers are not responsible for the suitability of the information contained

in this document for any reason. The information is provided “as is”, and Yealink does not provide any

ii

warranty and is subject to change without notice. All risks other than risks caused by use of the

information are borne by the recipient. In no event, even if Yealink has been suggested the occurrence of

damages that are direct, consequential, incidental, special, punitive or whatsoever (Including but not

limited to loss of business profit, business interruption or loss of business information), shall not be liable

for these damages.

End User License Agreement

This End User License Agreement ("EULA") is a legal agreement between you and Yealink. By installing,

copying or otherwise using the Products, you: (1) agree to be bounded by the terms of this EULA, (2) you

are the owner or an authorized user of the device, and (3) you represent and warrant that you have the

right, authority and capacity to enter into this agreement and to abide by all its terms and conditions, just

as if you had signed it. The EULA for this product is available on the Yealink Support page for the product.

Patent Information

China, the United States, EU (European Union) and other countries are protecting one or more patents of

accompanying products and/or patents being applied by Yealink.

Customer Feedback

We are striving to improve our documentation quality and we appreciate your feedback. Email your

opinions and comments to [e-mail].

Technical Support

Visit Yealink WIKI (http://support.yealink.com/) for the latest firmware, guides, FAQ, Product documents,

and more. For better service, we sincerely recommend you to use Yealink Ticketing system

(https://ticket.yealink.com) to submit all your technical issues.

iii

GNU GPL INFORMATION

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/onepage_83.html.

iv

Introduction

Introduction

Yealink administrator guide provides general guidance on setting up phone network, provisioning and

managing phones.

This guide is not intended for end users, but for administrators with experience in networking who

understand the basic of open SIP networks and VoIP endpoint environments.

As an administrator, you can do the following with this guide:

 Set up a VoIP network and provisioning server.

 Provision the phone with features and settings.

 Troubleshoot, update and maintain phones.

The information detailed in this guide is applicable to the following Yealink devices running firmware

version 83 or higher:

 T5 series IP phones, including T54S and T52S.

 T4 series IP phones, including T48S/G, T46S/G, T42S/G, T41S/P and T40P/G.

 T2 series IP phones, including T29G, T27P/G, T23P/G, T21(P) E2 and T19(P) E2.

 Expansion modules, including EXP20, EXP40 and EXP50.

Read the Yealink Products Regulatory Notices guide for all regulatory and safety guidance.

Related Documentations

The following related documents are available:

 Quick Start Guides, describe how to assemble IP phones and configure the most basic features

available on IP phones.

 User Guides, describe how to configure and use the basic and advanced features available on IP

phones via phone user interface or via web user interface.

 Auto Provisioning Guide, describes how to provision IP phones using the boot file and configuration

files.

The

Auto Provisioning Guide

a provisioning server. If you are novice, this guide is helpful for you.

is to serve as a basic guidance for provisioning Yealink IP phones with

 Using features integrated with Broadsoft UC-One, refer to the following two guides to have a better

knowledge of BroadSoft features.

IP Phones Deployment Guide for BroadSoft UC-One Environments, describes how to configure

BroadSoft features on the BroadWorks web portal and IP phones.

IP Phone Features Integrated with BroadSoft UC-One User Guide, describes how to configure and

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Convention

Description

Bold

Highlight the web/phone user interface items such as menus, menu

selections, soft keys, or directory names when they are involved in a

procedure or user action (for example, click Settings->Upgrade.).

Also used to emphasize text (for example, Important!).

Italics

Used to emphasize text, to show the example values or inputs (format of

examples:

http(s)://[IPv6 address]

).

Blue Text

Used for cross references to other topics related to this topic (for example,

Ring Tones), for hyperlinks to external sites and documents, for example, RFC

3315 or Yealink_SIP_IP_Phones_Auto_Provisioning_Guide.

Convention

Description

<>

Indicate that you must enter information specific to phone or network. For

example, when you see <MAC>, enter your phone’s 12-digit MAC address. If

you see <phoneIPAddress>, enter your phone’s IP address.

use IP phone features integrated with BroadSoft UC-One on Yealink IP phones.

For support or service, please contact your Yealink reseller or go to Yealink Technical Support online:

http://support.yealink.com/.

Recommended References

For more information on configuring and administering other Yealink products not included in this guide,

refer to product support page at Yealink Technical Support.

To access the latest Release Notes or other guides for Yealink IP phones, refer to the Document

Download page for your phone at Yealink Technical Support.

If you want to find Request for Comments (RFC) documents, type

(NNNN is the RFC number) into the location field of your browser.

For other references, look for the hyperlink or web info throughout this administrator guide.

http://www.ietf.org/rfc/rfcNNNN.txt

Typographic and Writing Conventions

Yealink documentations contain a few typographic conventions and writing conventions.

You need to know the following basic typographic conventions to distinguish types of in-text

information:

You also need to know the following writing conventions to distinguish conditional information:

ii

Convention

Description

->

Indicate that you need to select an item from a menu. For example,

Settings->Basic Settings indicates that you need to select Basic Settings

from the Settings menu.

Introduction

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

iv

Table of Contents

Table of Contents

Introduction..................................................................................... i

Related Documentations ......................................................................................................................................................... i

Recommended References .................................................................................................................................................... ii

Typographic and Writing Conventions ............................................................................................................................. ii

Table of Contents ........................................................................... v

Getting Started ............................................................................... 1

Requirements ............................................................................................................................................................................... 1

Yealink IP Phones in a Network ........................................................................................................................................... 1

Initialization Process Overview ............................................................................................................................................. 2

Loading the ROM File ..................................................................................................................................................... 3

Configuring the VLAN .................................................................................................................................................... 3

Querying the DHCP (Dynamic Host Configuration Protocol) Server .......................................................... 3

Contacting the Provisioning Server .......................................................................................................................... 3

Updating Firmware .......................................................................................................................................................... 4

Downloading the Resource Files ................................................................................................................................ 4

Verifying Startup ........................................................................................................................................................................ 4

Phone Network .............................................................................. 5

IPv4 and IPv6 Network Settings ........................................................................................................................................... 5

IP Addressing Mode Configuration .......................................................................................................................... 6

IPv4 Configuration............................................................................................................................................................ 7

IPv6 Configuration......................................................................................................................................................... 10

DHCP Option for IPv4 ........................................................................................................................................................... 14

Supported DHCP Option for IPv4 ........................................................................................................................... 14

DHCP Option 66, Option 43 and Custom Option ............................................................................................ 15

DHCP Option 42, Option 2 and Option 100....................................................................................................... 16

DHCP Option 12 ............................................................................................................................................................. 16

DHCP Option 120 .......................................................................................................................................................... 17

DHCP Option 60 ............................................................................................................................................................. 18

DHCP Option for IPv6 ........................................................................................................................................................... 19

Supported DHCP Option for IPv6 ........................................................................................................................... 19

DHCP Option 59 and Custom Option ................................................................................................................... 19

VLAN ............................................................................................................................................................................................. 19

LLDP Configuration ....................................................................................................................................................... 20

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

CDP Configuration ........................................................................................................................................................ 21

Manual VLAN Configuration ..................................................................................................................................... 22

DHCP VLAN ...................................................................................................................................................................... 25

VLAN Setting Configuration ...................................................................................................................................... 26

Wi-Fi ............................................................................................................................................................................................. 26

Wi-Fi Configuration ...................................................................................................................................................... 26

Real-Time Transport Protocol (RTP) Ports .................................................................................................................... 33

RTP Ports Configuration ............................................................................................................................................. 33

Network Address Translation (NAT) ................................................................................................................................ 34

NAT Traversal Configuration ..................................................................................................................................... 34

Keep Alive Configuration............................................................................................................................................ 38

Rport Configuration ...................................................................................................................................................... 39

SIP Port and TLS Port Configuration...................................................................................................................... 39

Internet Port and PC Port .................................................................................................................................................... 40

Supported Transmission Methods ......................................................................................................................... 40

Internet Port and PC Port Configuration ............................................................................................................. 40

VPN ............................................................................................................................................................................................... 42

VPN Related Files ........................................................................................................................................................... 42

VPN Configuration ........................................................................................................................................................ 43

Quality of Service (QoS) ....................................................................................................................................................... 43

Voice and SIP QoS Configuration ........................................................................................................................... 44

802.1x Authentication ........................................................................................................................................................... 45

802.1x Authentication Configuration .................................................................................................................... 45

TR-069 Device Management .............................................................................................................................................. 48

Supported RPC Methods ............................................................................................................................................ 48

TR069 Configuration .................................................................................................................................................... 49

Phone Provisioning ...................................................................... 53

Boot Files, Configuration Files and Resource Files .................................................................................................... 53

Boot Files ........................................................................................................................................................................... 53

Configuration Files ........................................................................................................................................................ 56

Resource Files .................................................................................................................................................................. 62

Files Download Process ............................................................................................................................................... 63

Provisioning Methods ........................................................................................................................................................... 64

Provisioning Methods Priority .................................................................................................................................. 65

Manual Provisioning ..................................................................................................................................................... 65

Central Provisioning ..................................................................................................................................................... 71

Setting Up a Provisioning Server ...................................................................................................................................... 80

Supported Provisioning Protocols .......................................................................................................................... 81

Supported Provisioning Server Discovery Methods ....................................................................................... 82

Configuring a Provisioning Server .......................................................................................................................... 86

Keeping User’s Personalized Settings after Auto Provisioning ............................................................................ 87

Auto Provisioning Flowchart for Keep User’s Personalized Configuration Settings ......................... 88

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Example: Deploying Phones from the Provisioning Server ................................................................................... 89

Firmware Upgrade ....................................................................... 91

Firmware for Each Phone Model ...................................................................................................................................... 91

Firmware Upgrade Configuration .................................................................................................................................... 92

Phone Customization................................................................... 93

Language .................................................................................................................................................................................... 94

Supported Languages.................................................................................................................................................. 94

Language Display Configuration ............................................................................................................................. 95

Language Customization ............................................................................................................................................ 96

Example: Setting a Custom Language for Phone Display .......................................................................... 101

Contrast ..................................................................................................................................................................................... 101

Contrast Configuration .............................................................................................................................................. 101

Wallpaper ................................................................................................................................................................................. 102

Wallpaper Configuration .......................................................................................................................................... 102

Wallpaper Customization ......................................................................................................................................... 104

Adding a Wallpaper from a USB Flash Drive .................................................................................................... 105

Example: Setting a Custom Picture as Wallpaper .......................................................................................... 105

Transparency ........................................................................................................................................................................... 105

Transparency Configuration .................................................................................................................................... 106

Screen Saver ............................................................................................................................................................................ 106

Screensaver Display Customization ..................................................................................................................... 107

Custom Screensaver Picture Limit ........................................................................................................................ 109

Screensaver Configuration ....................................................................................................................................... 110

Adding a Screensaver Picture from a USB Flash Drive ................................................................................ 113

Deleting a Screensaver Picture .............................................................................................................................. 113

Backlight ................................................................................................................................................................................... 113

Supported Backlight Options ................................................................................................................................. 114

Backlight Brightness and Time Configuration ................................................................................................. 114

Label Length for Line Key Display .................................................................................................................................. 116

Label Length Display Configuration .................................................................................................................... 117

Label Alignment for Line/Ext Key Display ................................................................................................................... 117

Label Alignment Display Configuration ............................................................................................................. 118

Linekey Length in Short ...................................................................................................................................................... 118

Linekey Length Shorten Rules ................................................................................................................................ 119

Linekey Length in Short Configuration ............................................................................................................... 119

Page Switch Key ..................................................................................................................................................................... 120

Page Switch Key Configuration.............................................................................................................................. 120

Page Tips .................................................................................................................................................................................. 120

Phone Page Tips ........................................................................................................................................................... 121

Expansion Module Page Tips .................................................................................................................................. 122

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Time and Date ........................................................................................................................................................................ 123

Time Zone ....................................................................................................................................................................... 124

NTP Settings .................................................................................................................................................................. 127

DST Settings ................................................................................................................................................................... 130

Time and Date Manually Configuration ............................................................................................................. 134

Time and Date Format Configuration ................................................................................................................. 135

Date Customization Rule .......................................................................................................................................... 136

Idle Clock Display .................................................................................................................................................................. 137

Idle Clock Display Configuration ........................................................................................................................... 137

Logo Customization ............................................................................................................................................................. 137

Custom Logo Picture Limit ...................................................................................................................................... 138

Customizing a Logo Picture .................................................................................................................................... 138

Custom Logo Configuration.................................................................................................................................... 139

Example: Setting a Custom Logo Display .......................................................................................................... 140

Call Display .............................................................................................................................................................................. 140

Call Display Configuration ....................................................................................................................................... 141

Display Method on Dialing ............................................................................................................................................... 143

Display Method on Dialing Configuration ........................................................................................................ 143

Key As Send ............................................................................................................................................................................. 144

Key As Send Configuration ...................................................................................................................................... 144

Softkey Layout ........................................................................................................................................................................ 145

Supported Call States and Soft Keys ................................................................................................................... 145

Softkey Layout File Customization ....................................................................................................................... 149

Softkey Layout Configuration ................................................................................................................................. 150

Example: Setting the Soft Keys Layout in Talking State .............................................................................. 153

Input Method .......................................................................................................................................................................... 154

Input Method File Customization ......................................................................................................................... 154

Input Method Configuration ................................................................................................................................... 155

Notification Popups ............................................................................................................................................................. 157

Notification Popups Configuration ...................................................................................................................... 158

Power LED Indicator ............................................................................................................................................................. 159

Power LED Indicator Configuration ...................................................................................................................... 159

Bluetooth .................................................................................................................................................................................. 162

Bluetooth Configuration ........................................................................................................................................... 162

Handset/Headset/Speakerphone Mode ..................................................................................................................... 164

Handset/Headset/Speakerphone Mode Configuration .............................................................................. 164

DSS Keys ................................................................................................................................................................................... 165

Supported DSS Keys ................................................................................................................................................... 165

Supported Dsskey Types .......................................................................................................................................... 166

Line Keys .......................................................................................................................................................................... 167

Programmable Keys .................................................................................................................................................... 175

Ext Keys ............................................................................................................................................................................ 180

Enhanced DSS Keys .............................................................................................................................................................. 183

Some Guidelines for Configuring Enhanced DSS Keys ................................................................................ 183

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Macro Action Strings .................................................................................................................................................. 184

EDK Configuration ....................................................................................................................................................... 188

EDK List Configuration ............................................................................................................................................... 189

EDK Prompt Configuration ...................................................................................................................................... 190

EDK Soft Keys Configuration .................................................................................................................................. 192

Example: Configuring EDK List for a Line Key .................................................................................................. 197

Power Saving .......................................................................................................................................................................... 197

Power Saving Configuration ................................................................................................................................... 198

USB Port Lock ......................................................................................................................................................................... 201

USB Port Lock Configuration .................................................................................................................................. 201

Search Source List in Dialing ............................................................................................................................................ 201

Search Source File Customization ........................................................................................................................ 202

Search Source List Configuration .......................................................................................................................... 203

Recent Call Display in Dialing .......................................................................................................................................... 205

Recent Call in Dialing Configuration ................................................................................................................... 206

Account Settings ........................................................................ 207

Account Registration ........................................................................................................................................................... 207

Supported Accounts ................................................................................................................................................... 207

Accounts Registration Configuration .................................................................................................................. 208

Registration Settings Configuration .................................................................................................................... 212

Outbound Proxy in Dialog ................................................................................................................................................ 215

Outbound Proxy in Dialog Configuration ......................................................................................................... 215

Server Redundancy............................................................................................................................................................... 216

Behaviors When Working Server Connection Fails ....................................................................................... 217

Registration Method of the Failover/Fallback Mode .................................................................................... 218

Fallback Server Redundancy Configuration...................................................................................................... 218

Failover Server Redundancy Configuration ...................................................................................................... 220

SIP Server Name Resolution ............................................................................................................................................. 225

SIP Server Name Resolution Configuration ...................................................................................................... 225

Static DNS Cache................................................................................................................................................................... 226

Behave with a Configured DNS Server ............................................................................................................... 226

Static DNS Cache Configuration ........................................................................................................................... 227

Logon Wizard ......................................................................................................................................................................... 231

Logon Wizard Configuration .................................................................................................................................. 231

Multiple Line Keys per Account ...................................................................................................................................... 233

Multiple Line Keys per Account Configuration ............................................................................................... 233

Auto Line Labels Rule Configuration ................................................................................................................... 235

Default Account ............................................................................................................................................................ 236

Call Log ....................................................................................... 239

Call Log Display ..................................................................................................................................................................... 239

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Call Log Configuration ........................................................................................................................................................ 240

Call Logs Backup ................................................................................................................................................................... 241

Directory ..................................................................................... 245

Local Directory ....................................................................................................................................................................... 245

Contact Avatars and Icons Picture Limit ............................................................................................................ 245

Preparing the Tar Formatted File .......................................................................................................................... 246

Local Contact File Customization .......................................................................................................................... 247

Local Contact Files and Resource Upload ......................................................................................................... 249

Example: Adding Contacts Using a Contact File ............................................................................................. 252

Local Contacts Backup ........................................................................................................................................................ 252

Favorite Contacts................................................................................................................................................................... 254

Favorites Configuration ............................................................................................................................................. 255

Lightweight Directory Access Protocol (LDAP) ......................................................................................................... 255

LDAP Attributes ............................................................................................................................................................ 256

LDAP Configuration .................................................................................................................................................... 256

Remote Phone Book ............................................................................................................................................................ 262

Remote Phone Book File Customization ........................................................................................................... 263

Remote Phone Book Configuration ..................................................................................................................... 265

Example: Configuring a Remote Phone Book.................................................................................................. 266

Directory List for Directory/Dir Soft Key ...................................................................................................................... 267

Directory List File Customization ........................................................................................................................... 267

Directory List Configuration .................................................................................................................................... 269

Example: Configuring a Directory List ................................................................................................................. 271

Directory Search Settings .................................................................................................................................................. 271

Directory Search Settings Configuraion ............................................................................................................. 271

Call Features ............................................................................... 273

Dial Plan .................................................................................................................................................................................... 274

Dial Plan Defined by Four Patterns ...................................................................................................................... 274

Dial Plan Defined by Digit Map ............................................................................................................................. 283

Emergency Dialplan and Enhanced 911 ...................................................................................................................... 293

Emergency Dialplan and Enhanced 911 Configuration ............................................................................... 294

Hotline ....................................................................................................................................................................................... 298

Hotline Configuration ................................................................................................................................................ 299

Off Hook Hot Line Dialing ................................................................................................................................................. 300

Off Hook Hot Line Dialing Configuration .......................................................................................................... 300

Live Dialpad ............................................................................................................................................................................. 301

Live Dialpad Configuration ...................................................................................................................................... 301

Auto Redial .............................................................................................................................................................................. 302

Auto Redial Configuration ....................................................................................................................................... 302

ReCall Configuration ............................................................................................................................................................ 303

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Table of Contents

Speed Dial ................................................................................................................................................................................ 304

Speed Dial Key Configuration ................................................................................................................................ 304

Password Dial.......................................................................................................................................................................... 304

Password Dial Configuration .................................................................................................................................. 305

Call Timeout ............................................................................................................................................................................ 306

Call Timeout Configuration ..................................................................................................................................... 306

Anonymous Call ..................................................................................................................................................................... 306

Anonymous Call Configuration.............................................................................................................................. 307

Call Number Filter ................................................................................................................................................................. 309

Call Number Filter Configuration .......................................................................................................................... 309

IP Address Call ........................................................................................................................................................................ 309

IP Address Call Configuration................................................................................................................................. 309

Ignoring Incoming Calls ..................................................................................................................................................... 310

Ignoring Incoming Calls Configuration .............................................................................................................. 311

Off Hook Answering ............................................................................................................................................................ 311

Off Hook Answering Configuration ..................................................................................................................... 311

Auto Answer ............................................................................................................................................................................ 311

Auto Answer Configuration ..................................................................................................................................... 312

Anonymous Call Rejection ................................................................................................................................................ 314

Anonymous Call Rejection Configuration ......................................................................................................... 314

Call Waiting ............................................................................................................................................................................. 316

Call Waiting Configuration ...................................................................................................................................... 316

Do Not Disturb (DND) ......................................................................................................................................................... 318

DND Settings Configuration ................................................................................................................................... 318

DND Feature Configuration .................................................................................................................................... 320

DND Synchronization for Server-side Configuration ................................................................................... 323

Multiple Call Appearances ................................................................................................................................................ 324

Multiple Call Appearances Configuration ......................................................................................................... 324

Call Hold ................................................................................................................................................................................... 325

Call Hold Configuration ............................................................................................................................................ 326

Music on Hold (MoH) Configuration ................................................................................................................... 328

Call Mute................................................................................................................................................................................... 329

Microphone Mute Configuration .......................................................................................................................... 330

Keep Mute ...................................................................................................................................................................... 330

Call Forward ............................................................................................................................................................................. 331

Call Forward Settings Configuration.................................................................................................................... 331

Call Forward Feature Configuration ..................................................................................................................... 333

Call Forward Synchronization for Server-side Configuration .................................................................... 343

Call Transfer ............................................................................................................................................................................. 345

Call Transfer Configuration ...................................................................................................................................... 345

Transfer Mode for Dsskey Configuration .......................................................................................................... 347

Conference ............................................................................................................................................................................... 347

Conference Type Configuration ............................................................................................................................ 347

Local Conference Configuration ............................................................................................................................ 348

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Network Conference Configuration ..................................................................................................................... 349

USB Recording ....................................................................................................................................................................... 350

USB Recording Configuration ................................................................................................................................ 350

Multicast Paging .................................................................................................................................................................... 351

Multicast Paging Group Configuration .............................................................................................................. 351

Multicast Listening Group Configuration .......................................................................................................... 353

Multicast Paging Settings......................................................................................................................................... 354

Audio Features ........................................................................... 359

Alert Tone ................................................................................................................................................................................. 359

Alert Tone Configuration .......................................................................................................................................... 360

Ring Tones ............................................................................................................................................................................... 361

Custom Ringtone Limit.............................................................................................................................................. 362

Ringtone Configuration ............................................................................................................................................ 362

Distinctive Ring Tones ......................................................................................................................................................... 364

Supported Alert-Info Headers Format ................................................................................................................ 364

Distinctive Ring Tones Configuration .................................................................................................................. 368

Ringer Device .......................................................................................................................................................................... 370

Ringer Device Configuration ................................................................................................................................... 370

Audio Volume ......................................................................................................................................................................... 370

Ringer Volume Configuration................................................................................................................................. 371

Sending Volume Configuration ............................................................................................................................. 371

Tones .......................................................................................................................................................................................... 373

Supported Tones ......................................................................................................................................................... 373

Tones Configuration ................................................................................................................................................... 374

Audio Codecs .......................................................................................................................................................................... 379

Supported Audio Codecs ......................................................................................................................................... 379

Audio Codecs Configuration................................................................................................................................... 381

Packetization Time (PTime) ............................................................................................................................................... 383

Supported PTime of Audio Codec ........................................................................................................................ 383

PTime Configuration .................................................................................................................................................. 384

Early Media .............................................................................................................................................................................. 384

Early Media Configuration ....................................................................................................................................... 385

Headset Prior .......................................................................................................................................................................... 385

Headset Prior Configuration ................................................................................................................................... 386

Dual Headset ........................................................................................................................................................................... 386

Dual Headset Configuration ................................................................................................................................... 387

Acoustic Clarity Technology ............................................................................................................................................. 387

Acoustic Echo Cancellation (AEC) ......................................................................................................................... 387

Background Noise Suppression (BNS) ................................................................................................................ 388

Automatic Gain Control (AGC) ............................................................................................................................... 388

Voice Activity Detection (VAD) .............................................................................................................................. 388

Comfort Noise Generation (CNG) ......................................................................................................................... 389

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Jitter Buffer ..................................................................................................................................................................... 389

DTMF .......................................................................................................................................................................................... 392

DTMF Keypad ................................................................................................................................................................ 392

Transmitting DTMF Digit .......................................................................................................................................... 393

Suppress DTMF Display ............................................................................................................................................ 395

Transfer via DTMF ........................................................................................................................................................ 396

Local DTMF Tone ......................................................................................................................................................... 397

Voice Quality Monitoring (VQM) .................................................................................................................................... 397

RTCP-XR ........................................................................................................................................................................... 397

VQ-RTCPXR .................................................................................................................................................................... 398

Security Features ........................................................................ 407

User and Administrator Identification .......................................................................................................................... 407

User and Administrator Identification Configuration ................................................................................... 407

User Access Level Configuration ........................................................................................................................... 409

Auto Logout Time ................................................................................................................................................................. 409

Auto Logout Time Configuration .......................................................................................................................... 410

Phone Lock .............................................................................................................................................................................. 410

Operation Behaviors on Lock Phone ................................................................................................................... 411

Phone Lock Configuration ....................................................................................................................................... 412

Transport Layer Security (TLS) ......................................................................................................................................... 414

Supported Cipher Suites ........................................................................................................................................... 414

Supported Trusted and Server Certificates ....................................................................................................... 415

TLS Configuration ........................................................................................................................................................ 418

Secure Real-Time Transport Protocol (SRTP) ............................................................................................................ 421

SRTP Configuration ..................................................................................................................................................... 423

Encrypting and Decrypting Files ..................................................................................................................................... 424

Configuration Files Encryption Tools ................................................................................................................... 425

Configuration Files Encryption and Decryption .............................................................................................. 425

Contact Files Encryption and Decryption .......................................................................................................... 425

Encryption and Decryption Configuration ........................................................................................................ 426

Example: Encrypting Configuration Files ........................................................................................................... 429

Incoming Signaling Validation ........................................................................................................................................ 431

Incoming Signaling Validation Configuration ................................................................................................. 431

Advanced Features ..................................................................... 433

Call Pickup ................................................................................................................................................................................ 433

Directed Call Pickup .................................................................................................................................................... 433

Group Call Pickup ........................................................................................................................................................ 437

Call Completion ..................................................................................................................................................................... 438

Call Completion Configuration .............................................................................................................................. 441

Example: Using Call Completion ........................................................................................................................... 441

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Call Park and Retrieve ......................................................................................................................................................... 441

Call Park and Retrieve Configuration .................................................................................................................. 442

Example: Setting Call Park and Retrieve in FAC Mode ................................................................................ 443

Example: Setting Call Park and Retrieve in Transfer Mode ........................................................................ 444

Automatic Call Distribution (ACD) ................................................................................................................................. 444

ACD Key Configuration ............................................................................................................................................. 445

ACD Configuration ...................................................................................................................................................... 445

Example: Setting ACD ................................................................................................................................................ 447

Busy Lamp Field ..................................................................................................................................................................... 447

BLF Key Configuration ............................................................................................................................................... 448

BLF List Configuration ................................................................................................................................................ 448

State Indicator of Remote Line .............................................................................................................................. 451

BLF/BLF List Subscription.......................................................................................................................................... 451

Visual and Audio Alert for Monitor Lines .......................................................................................................... 454

LED Mode for BLF/BLF List Key .............................................................................................................................. 456

BLF/BLF List Key LED Status and Behavior Configuration ........................................................................... 459

BLF Key for Intercom Configuration .................................................................................................................... 468

Shared Line .............................................................................................................................................................................. 469

State Indicator of Shared Line ................................................................................................................................ 469

Shared Call Appearance (SCA) Configuration.................................................................................................. 470

Bridge Lines Appearance (BLA) .............................................................................................................................. 472

Intercom .................................................................................................................................................................................... 473

Intercom Key Configuration .................................................................................................................................... 474

State Monitor for Intercom Contact .................................................................................................................... 474

Outgoing Intercom Configuration........................................................................................................................ 475

Incoming Intercom Configuration ........................................................................................................................ 476

CSTA Control ........................................................................................................................................................................... 478

CSTA Control Configuration .................................................................................................................................... 479

Action URL ............................................................................................................................................................................... 479

Pre-defined Events List .............................................................................................................................................. 479

Variable Values List ..................................................................................................................................................... 481

Action URL Configuration ........................................................................................................................................ 482

Action URI ................................................................................................................................................................................ 496

Supported HTTP/HTTPS GET Request ................................................................................................................ 497

Supported SIP Notify Message .............................................................................................................................. 498

Variable Values List ..................................................................................................................................................... 499

Action URI Configuration ......................................................................................................................................... 502

Example: Capturing the Current Screen of the Phone ................................................................................. 503

Example: Placing a Call via Web User Interface .............................................................................................. 504

Voice Mail ................................................................................................................................................................................. 505

MWI for Voice Mail Configuration ....................................................................................................................... 505

Short Message Service (SMS) .......................................................................................................................................... 507

SMS Configuration ...................................................................................................................................................... 508

XML Browser ........................................................................................................................................................................... 508

xiv

Table of Contents

XML Browser Configuration .................................................................................................................................... 508

Hot Desking ............................................................................................................................................................................. 510

Hot Desking Key Configuration ............................................................................................................................. 511

Hot Desking Configuration ...................................................................................................................................... 511

General Features ........................................................................ 513

Line Identification Presentation ...................................................................................................................................... 513

CLIP and COLP Configuration................................................................................................................................. 514

Return Code for Refused Call........................................................................................................................................... 515

Return Code for Refused Call Configuration ................................................................................................... 515

Hide Feature Access Codes ............................................................................................................................................... 516

Hide Feature Access Codes Configuration........................................................................................................ 516

Accept SIP Trust Server Only ............................................................................................................................................ 517

Accept SIP Trust Server Only Configuration ..................................................................................................... 517

100 Reliable Retransmission ............................................................................................................................................. 517

100 Reliable Retransmission Configuration ...................................................................................................... 518

SIP Session Timer .................................................................................................................................................................. 519

SIP Session Timer Configuration ........................................................................................................................... 519

Session Timer .......................................................................................................................................................................... 520

Session Timer Configuration ................................................................................................................................... 521

Reboot in Talking .................................................................................................................................................................. 522

Reboot in Talking Configuration ........................................................................................................................... 522

Reserve # in User Name ..................................................................................................................................................... 522

Reserve # in User Name Configuration .............................................................................................................. 523

Busy Tone Delay .................................................................................................................................................................... 523

Busy Tone Delay Configuration ............................................................................................................................. 524

CFG File Version Information ........................................................................................................................................... 524

CFG File Version Information Configuration .................................................................................................... 524

Media Loopback .................................................................................................................................................................... 524

Media Loopback Configuration ............................................................................................................................. 525

Configuration Parameters ......................................................... 527

BroadSoft Parameters ......................................................................................................................................................... 527

BroadSoft Settings ...................................................................................................................................................... 527

Broadsoft UC ................................................................................................................................................................. 527

Broadsoft XSI ................................................................................................................................................................. 531

Broadsoft ACD .............................................................................................................................................................. 534

Broadsoft Centralized Call Recording ................................................................................................................. 536

Broadsoft Security Classification ........................................................................................................................... 537

Broadsoft Hoteling ...................................................................................................................................................... 537

Broadsoft Flexible Seating ....................................................................................................................................... 539

Broadsoft Call Decline ............................................................................................................................................... 540

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Broadsoft Network Directory .................................................................................................................................. 540

Broadsoft Visual Voice Mail ..................................................................................................................................... 546

Broadsoft SCA ............................................................................................................................................................... 546

Broadsoft Call Park ...................................................................................................................................................... 548

Broadsoft Emergency Call ........................................................................................................................................ 549

Call Waiting Sync ......................................................................................................................................................... 549

Start2Start ACD Parameters ............................................................................................................................................. 550

Ethernet Interface MTU Parameter ................................................................................................................................ 551

SIP Settings Parameters...................................................................................................................................................... 551

Call Settings Parameters .................................................................................................................................................... 555

Troubleshooting ......................................................................... 557

Troubleshooting Methods ................................................................................................................................................ 557

Log Files ........................................................................................................................................................................... 557

Resetting Phone and Configuration .................................................................................................................... 566

Packets Capture ............................................................................................................................................................ 569

Watch Dog ...................................................................................................................................................................... 571

Network Diagnostics .................................................................................................................................................. 572

Analyzing Configuration Files ................................................................................................................................. 573

Exporting All the Diagnostic Files ......................................................................................................................... 574

Phone Status .................................................................................................................................................................. 575

Phone Reboot ............................................................................................................................................................... 575

Troubleshooting Solutions ................................................................................................................................................ 577

IP Address Issues.......................................................................................................................................................... 577

Time and Date Issues ................................................................................................................................................. 578

Display Issues ................................................................................................................................................................ 579

Phone Book Issues ...................................................................................................................................................... 579

Audio Issues ................................................................................................................................................................... 579

Wi-Fi and Bluetooth Issues ...................................................................................................................................... 580

Firmware and Upgrading Issues ............................................................................................................................ 581

System Log Issues ....................................................................................................................................................... 582

Password Issues ............................................................................................................................................................ 583

Logo Issues ..................................................................................................................................................................... 583

Power and Startup Issues ......................................................................................................................................... 583

Other Issues ................................................................................................................................................................... 584

Appendix..................................................................................... 586

RFC and Internet Draft Support ...................................................................................................................................... 586

Reading Icons ......................................................................................................................................................................... 591

xvi

Getting Started

Getting Started

This chapter describes where Yealink IP phones fit in your network and provides basic initialization

instructions of IP phones.

Topics

Requirements

Yealink IP Phones in a Network

Initialization Process Overview

Verifying Startup

Requirements

In order to perform as SIP endpoints in your network successfully, you need the following in

deployments:

 A working IP network is established.

 VoIP gateways configured for SIP.

 The latest (or compatible) firmware of IP phones is available.

 A call server is active and configured to receive and send SIP messages.

 A text editor, such as UltraEdit, to create and edit boot files, configuration files and resource files.

Yealink IP Phones in a Network

Most Yealink IP phones are connected physically through a Category 5E (CAT5E) cable to a

10/100/1000Mbps Ethernet LAN, and send and receive all data using the same packet-based technology.

Some phones support wireless network.

Since the IP phone is a data terminal, digitized audio being just another type of data from its perspective,

the phone is capable of vastly more than traditional business phones. Moreover, Yealink IP phones run

the same protocols as your office personal computer, which means that you can develop many innovative

applications without resorting to specialized technology.

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

There are many ways to set up a phone network using Yealink IP phones. The following shows an

example of a network setup:

Initialization Process Overview

The initialization process of the IP phone is responsible for network connectivity and operation of the IP

phone in your local network. Once you connect your IP phone to the network and to an electrical supply,

the IP phone begins its initialization process.

Topics

Loading the ROM File

Configuring the VLAN

Querying the DHCP (Dynamic Host Configuration Protocol) Server

Contacting the Provisioning Server

2

Getting Started

Updating Firmware

Downloading the Resource Files

Loading the ROM File

The ROM file resides in the flash memory of the IP phone. The IP phone comes from the factory with a

ROM file preloaded. During initialization, the IP phone runs a bootstrap loader that loads and executes

the ROM file.

Configuring the VLAN

If you connect the IP phone to a switch, the switch notifies the IP phone of the VLAN information defined

on the switch (if using LLDP or CDP). The IP phone can then proceed with the DHCP request for its

network settings (if using DHCP).

Querying the DHCP (Dynamic Host Configuration Protocol)

Server

The IP phone is capable of querying a DHCP server.

After establishing network connectivity, the IP phone can obtain the following network parameters from

the DHCP server during initialization:

 IP Address

 Subnet Mask

 Default Gateway

 Primary DNS (Domain Name Server)

 Secondary DNS

By default, the IP phones obtain these parameters from a DHCPv4. You can configure network

parameters of the IP phone manually if any of them are not supplied by the DHCP server.

Contacting the Provisioning Server

If you configure the IP phone to obtain configurations from the provisioning server, it will be connected

to the provisioning server, and then download the boot file and configuration file(s) during startup. The

IP phone will be able to resolve and update configurations written in the configuration file(s). If the IP

phone does not obtain configurations from the provisioning server, the IP phone will use the

configurations stored in the flash memory.

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Updating Firmware

If you define the access URL of firmware in the configuration file, the IP phone will download firmware

from the provisioning server. If the MD5 value of the downloaded firmware file differs from that stored in

the flash memory, the IP phone will perform a firmware update.

You can manually upgrade firmware if the IP phone does not download firmware from the provisioning

server.

Downloading the Resource Files

In addition to configuration file(s), the IP phone may require resource files before it provides service.

These resource files are optional, but if you deploy some particular features, these files are required.

Verifying Startup

After connected to the power and network, the IP phone begins the initialization process by cycling

through the following steps:

1. The power LED indicator glows red.

2. The message “Welcome Initializing… please wait” appears on the LCD screen when the IP phone

starts up.

3. The main LCD screen displays the following:

 Time and date

 Soft key labels

4. Press the OK/√ key or press Menu->Status to check the IP phone status, the LCD screen displays

the valid IP address, MAC address, firmware version, and so on.

If the IP phone has successfully passed through these steps, it starts up properly and is ready for

use.

4

Phone Network

Note

Yealink IP phones comply with the DHCPv4 specifications documented in RFC 2131, and DHCPv6
specifications documented in RFC 3315.

Phone Network

Yealink IP phones operate on an Ethernet local area network (LAN) or wireless network. You can

configure the local area network to accommodate a number of network designs, which varies by

organization and Yealink IP phones.

Topics

IPv4 and IPv6 Network Settings

DHCP Option for IPv4

DHCP Option for IPv6

VLAN

Wi-Fi

Real-Time Transport Protocol (RTP) Ports

Network Address Translation (NAT)

Internet Port and PC Port

VPN

Quality of Service (QoS)

802.1x Authentication

TR-069 Device Management

IPv4 and IPv6 Network Settings

Yealink IP Phones support IPv4 addressing mode, IPv6 addressing mode, as well as an IPv4&IPv6

dual-stack addressing mode.

After connected to the wired network, the phones can obtain the IPv4 or IPv6 network settings from a

Dynamic Host Configuration Protocol (DHCP) server if your network supports it. To make it easier to

manage IP settings, we recommend using automated DHCP which is possible to eliminate repetitive

manually data entry.

You can also configure IPv4 or IPv6 network settings manually.

Topics

IP Addressing Mode Configuration

IPv4 Configuration

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Parameter

static.network.ip_address_mode

[1]

<y0000000000xx>.cfg

Description

It configures the IP addressing mode.

Permitted

Values

0-IPv4

1-IPv6

2-IPv4 & IPv6

Default

0

Web UI

Network->Basic->Internet Port->Mode(IPv4/IPv6)

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin)->Network->WAN Port->IP Mode

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IP Mode

Parameter

static.network.preference

[1]

<y0000000000xx>.cfg

Description

It specifies IPv4 or IPv6 as the preferred network in a Dual Stack mode.

Note: It works only if “static.network.ip_address_mode” is set to 2 (IPv4 & IPv6).

Permitted

Values

0-IPv6

1-IPv4

Default

0

Web UI

Network->Basic->Internet Port->Preference(IPv4/IPv6)

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin) ->Network->WAN Port->Preference

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->Preference

Parameter

account.X.sip_server_mode

[2]

<MAC>.cfg

Description

It specifies the preferred network and query mode in a Dual Stack mode, when a

domain name is configured for a SIP server.

Note: It works only if “static.network.ip_address_mode” is set to 2 (IPv4 & IPv6).

Permitted

0-Specify IPv4 as the preferred network, and A query will be performed preferentially.

IPv6 Configuration

IP Addressing Mode Configuration

The following table lists the parameters you can use to configure IP addressing mode.

6

Phone Network

Values

1-Specify IPv6 as the preferred network, and AAAA query will be performed

preferentially.

2-The preferred network is configured by “static.network.preference”.

Default

0

Parameter

static.network.internet_port.type

[1]

<y0000000000xx>.cfg

Description

It configures the Internet port type for IPv4.

Note: It works only if “static.network.ip_address_mode” is set to 0 (IPv4) or 2 (IPv4 &

IPv6).

Permitted

Values

0-DHCP

2-Static IP Address

Default

0

Web UI

Network->Basic->IPv4 Config

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin)->Network->WAN Port->IPv4

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IPv4

Parameter

static.network.internet_port.ip

[1]

<y0000000000xx>.cfg

Description

It configures the IPv4 address.

Example:

static.network.internet_port.ip = 192.168.1.20

Note: It works only if “static.network.ip_address_mode” is set to 0 (IPv4) or 2 (IPv4 &
IPv6), and "static.network.internet_port.type" is set to 2 (Static IP Address).

Permitted

Values

IPv4 Address

Default

Blank

Web UI

Network->Basic->IPv4 Config->Static IP Address->IP Address

[1]

If you change this parameter, the IP phone will reboot to make the change take effect.

[2]

X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; for

T41P/T41S/T27P/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2, X=1.

IPv4 Configuration

The following table lists the parameters you can use to configure IPv4.

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin)->Network->WAN Port->IPv4->Static

IP->IP Address

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IPv4->Static IPv4 Client->IP Address

Parameter

static.network.internet_port.mask

[1]

<y0000000000xx>.cfg

Description

It configures the IPv4 subnet mask.

Example:

static.network.internet_port.mask = 255.255.255.0

Note: It works only if “static.network.ip_address_mode” is set to 0 (IPv4) or 2 (IPv4 &

IPv6), and "static.network.internet_port.type" is set to 2 (Static IP Address).

Permitted

Values

Subnet Mask

Default

Blank

Web UI

Network->Basic->IPv4 Config->Static IP Address->Subnet Mask

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin)->Network->WAN Port->IPv4->Static

IP->Subnet Mask

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IPv4->Static IPv4 Client->Subnet Mask

Parameter

static.network.internet_port.gateway

[1]

<y0000000000xx>.cfg

Description

It configures the IPv4 default gateway.

Example:

static.network.internet_port.gateway = 192.168.1.254

Note: It works only if “static.network.ip_address_mode” is set to 0 (IPv4) or 2 (IPv4 &

IPv6), and "static.network.internet_port.type" is set to 2 (Static IP Address).

Permitted

Values

IPv4 Address

Default

Blank

Web UI

Network->Basic->IPv4 Config->Static IP Address->Default Gateway

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin)->Network->WAN Port->IPv4->Static

IP->Default Gateway

8

Phone Network

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IPv4->Static IPv4 Client->Default Gateway

Parameter

static.network.static_dns_enable

[1]

<y0000000000xx>.cfg

Description

It triggers the static DNS feature to on or off.

Note: It works only if “static.network.internet_port.type” is set to 0 (DHCP).

Permitted

Values

0-Off, the IP phone will use the IPv4 DNS obtained from DHCP.

1-On, the IP phone will use manually configured static IPv4 DNS.

Default

0

Web UI

Network->Basic->IPv4 Config->Static DNS

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin) ->Network->WAN

Port->IPv4->Type(DHCP)->Static DNS

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin) ->Network->WAN

Port->IPv4->DHCP IPv4 Client->Static DNS

Parameter

static.network.primary_dns

[1]

<y0000000000xx>.cfg

Description

It configures the primary IPv4 DNS server.

Example:

static.network.primary_dns = 202.101.103.55

Note: It works only if “static.network.ip_address_mode” is set to 0 (IPv4) or 2 (IPv4 &

IPv6). In DHCP environment, you also need to make sure

“static.network.static_dns_enable" is set to 1 (On).

Permitted

Values

IPv4 Address

Default

Blank

Web UI

Network->Basic->IPv4 Config->Static IP Address->Primary DNS

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin)->Network->WAN Port->IPv4->Static

IP->Primary DNS

Or Menu->Settings->Advanced (default password: admin)->Network->WAN

Port->IPv4->DHCP->Static DNS (Enabled) ->Primary DNS

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IPv4->Static IPv4 Client->Pri.DNS

Or Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

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Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones

Port->IPv4->DHCP IPv4 Client->Static DNS (Enabled) ->Pri.DNS

Parameter

static.network.secondary_dns

[1]

<y0000000000xx>.cfg

Description

It configures the secondary IPv4 DNS server.

Example:

static.network.secondary_dns = 202.101.103.54

Note: It works only if “static.network.ip_address_mode” is set to 0 (IPv4) or 2 (IPv4 &

IPv6). In DHCP environment, you also need to make sure

“static.network.static_dns_enable" is set to 1 (On).

Permitted

Values

IPv4 Address

Default

Blank

Web UI

Network->Basic->IPv4 Config->Static IP Address->Secondary DNS

Phone UI

T54S/T52S/T48S/T48G/T46S/T46G/T29G:

Menu->Advanced (default password: admin)->Network->WAN Port->IPv4->Static

IP->Secondary DNS

Or Menu->Advanced (default password: admin)->Network->WAN

Port->IPv4->DHCP->Static DNS (Enabled) ->Secondary DNS

T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:

Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IPv4->Static IPv4 Client->Sec.DNS

Or Menu->Settings->Advanced Settings (default password: admin)->Network->WAN

Port->IPv4->DHCP IPv4 Client->Static DNS (Enabled) ->Sec.DNS

Parameter

static.network.ipv6_internet_port.type

[1]

<y0000000000xx>.cfg

Description

It configures the Internet port type for IPv6.

Note: It works only if “static.network.ip_address_mode” is set to 1 (IPv6) or 2 (IPv4 &

IPv6).

[1]

If you change this parameter, the IP phone will reboot to make the change take effect.

IPv6 Configuration

If you configure the network settings on the phone for an IPv6 network, you can set up an IP address for

the phone by using SLAAC (ICMPv6), DHCPv6 or by manually entering an IP address. Ensure that your

network environment supports IPv6. Contact your ISP for more information.

When you enable both SLAAC and DHCPv6 on the phone, the server can specify the IP phone to obtain

the IPv6 address and other network settings either from SLAAC or from DHCPv6, if the SLAAC server is

not working, the IP phone will try to obtain the IPv6 address and other network settings via DHCPv6.

The following table lists the parameters you can use to configure IPv6.

10