Yealink SIP-T2 Series, SIP-T19 E2 T4 Series, SIP-T5 Series, CP860, SIP-T19P E2 T4 Series Administrator's Manual

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Warranty

(1) Warranty

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE SUBJECT TO

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

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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:

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Introduction

About This Guide

Yealink administrator guide is intended for administrators who need to properly configure,

customize, manage, and troubleshoot the IP phone system rather than end-users. This guide will

help you understand the Voice over Internet Protocol (VoIP) network and Session Initiation

Protocol (SIP) components, and provides descriptions of all available phone features.

This guide describes three methods for configuring IP phones: central provisioning, web user

interface and phone user interface. It will help you perform the following tasks:



Configure your IP phone on a provisioning server



Configure your phone’s features and functions via web/phone user interface

Introduction



Troubleshoot some common phone issues

Many of the features described in this guide involve network settings, which could affect the IP

phone’s performance in the network. So an understanding of IP networking and a prior

knowledge of IP telephony concepts are necessary.

The information detailed in this guide is applicable to firmware version 81 or higher. The

firmware format is like x.x.x.x.rom. The second x from left must be greater than or equal to 81

(e.g., the firmware version of SIP-T46G IP phone: 28.81.0.20.rom).

See the

Yealink Products Regulatory Notices guide

Chapters in This Guide

This administrator guide includes the following chapters:

 Chapter 1, “Product Overview” describes the SIP IP phones and expansion modules.

 Chapter 2, “Getting Started” describes how Yealink phones fit in your network and how to

install and connect IP phones, and also gives you an overview of IP phone’s initialization

process.

 Chapter 3, “Setting Up Your System” describes some essential information on how to set

up your phone network and set up your phone with a provisioning server.

for all regulatory and safety guidance.

 Chapter 4, “Configuring Basic Features” describes how to configure the basic features on IP

phones.

 Chapter 5, “Configuring Advanced Features” describes how to configure the advanced

features on IP phones.

 Chapter 6, “Configuring Audio Features” describes how to configure the audio features on

IP phones.

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

 Chapter 7, “Configuring Security Features” describes how to configure the security features

on IP phones.

 Chapter 8, “Troubleshooting” describes how to troubleshoot IP phones and provides some

common troubleshooting solutions.

 Chapter 9, “Appendix” provides the glossary, time zones, trusted certificates, auto

provisioning flowchart, reference information about IP phones compliant with RFC 3261,

SIP call flows and some other function lists (e.g., DSS keys, reading icons).

Conventions Used in Yealink Documentations

Convention

Description

Bold

Highlights 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 (e.g., Click on

Settings->Upgrade.).

Also used to emphasize text (e.g., Important!).

Italics

Used to show the format of examples (e.g.,

http(s)://[IPv6

address]

), or to show the title of a section in the reference

documentations available on the Yealink Technical Support

Website (e.g.,

Triggering the IP phone to Perform the Auto

Provisioning

Blue Text

Used for cross references to other sections within this

documentation (e.g., refer to Ring Tones on page 809), for

hyperlinks to non-Yealink websites (e.g., RFC 3315) or for

hyperlinks to Yealink Technical Support website.

Blue Text in Italics

Used for hyperlinks to Yealink resources outside of this

documentation such as the Yealink documentations (e.g.,

Yealink_SIP-T2_Series_T19(P)

E2_T4_Series_T5_Series_W5_Series_CP860_IP_Phones_Auto_Provisi

oning_Guide_V81

Convention

Description

Indicates 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.

Indicates 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.

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:

Introduction

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

Reading the Configuration Parameter Tables

The feature descriptions discussed in this guide include two tables. One is a summary table of

provisioning methods that you can use to configure the features. The other is a table of details

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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

of the configuration parameters that you configure to make the features work.

This brief section describes the conventions used in the summary table and configuration

parameter table. In order to read the tables and successfully perform configuration changes, an

understanding of these conventions is necessary.

Summary Table Format

The following summary table indicates three provisioning methods (central provisioning, web

user interface and phone user interface, refer to Provisioning Methods for more information)

you can use to configure a feature. Note that the types of provisioning methods available for

each feature will vary; not every feature uses all these three methods.

The central provisioning method requires you to configure parameters located in CFG format

configuration files that Yealink provides. For more information on configuration files, refer to

Configuration Files on page 133. As shown below, the table specifies the configuration file name

and the corresponding parameters. That is, the <MAC>.cfg file contains the

account.X.auto_answer

feature.auto_answer_delay

parameter, and the <y0000000000xx>.cfg file contains the

parameter.

The web user interface method requires you to configure features by navigating to the specified

link. This navigation URL can help you quickly locate the webpage where you can configure the

feature.

viii

Configuration Parameter Table Format

Sometimes you will see the words “Refer to the following content” in the Permitted Values or

cannot be configured via web/phone user interface.

The following configuration parameter table describes the parameter that you can configure to

make the feature (e.g., auto answer) work.

Introduction

Note

Default field. It means the permitted value or the default value of the parameter has the model

difference or there are many permitted values of the parameter, you can get more details from the following Description field.

The word “None” in the Web User Interface or Phone User Interface field means this feature

The above table also indicates three methods for configuring the feature.

Method 1: Central Provisioning

This table specifies the details of

the auto answer feature. This parameter is disabled by default. If you want to enable the auto

answer feature, open the MAC.cfg file and locate the parameter name

Set the parameter value to “1” to enable the auto answer feature or “0” to disable the auto

answer feature.

Note that some parameters described in this guide contain one or more variables (e.g., X or Y).

But the variables in the parameters described in the CFG file are all replaced with specific value

in the scope of variable. You may need to assign a value to the variable before you search and

account.X.auto_answer

parameter, which enables or disables

account.X.auto_answer

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

locate the specific parameter in the CFG file.

For example, if you want to enable the auto answer feature for account 1, you need to locate the

account.1.auto_answer

account.1.auto_answer = 1). If you want to configure the SIP server 1 for account 1, you can

locate the

account.1.sip_server.1.address = 10.2.1.48).

The following shows a segment of MAC.cfg file:

account.1.sip_server.1.address

in the MAC.cfg file and then configure it as required (e.g.,

in the MAC.cfg file and configure it as required (e.g.,

Method 2: Web User Interface

As described in the chapter Summary Table Format, you can directly navigate to the specified

webpage to configure the feature. You can also first log into the web user interface, and then

locate the feature field according to the web path (e.g., Account->Basic->Auto Answer) to

configure it as required.

Introduction

As shown in the following illustration:

To successfully log into the web user interface, you may need to enter the user name (default:

admin) and password (default: admin). For more information, refer to Web User Interface on

page 130.

Method 3: Phone User Interface

You can configure features via phone user interface. Access to the desired feature according to

the phone path (e.g., Menu->Features->Auto Answer->Line X->Auto Answer) and then

configure it as required.

As shown in the following illustration:

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.

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

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

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

browser.

This guide mainly takes the SIP-T46G IP phones as example for reference. For more details on

other IP phones, refer to

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

Yealink phone-specific user guide

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

Understanding VoIP Principle and SIP Components

This section mainly describes the basic knowledge of VoIP principle and SIP components, which

will help you have a better understanding of the phone’s deployment scenarios.

VoIP Principle

VoIP

VoIP (Voice over Internet Protocol) is a technology using the Internet Protocol instead of

traditional Public Switch Telephone Network (PSTN) technology for voice communications.

It is a family of technologies, methodologies, communication protocols, and transmission

techniques for the delivery of voice communications and multimedia sessions over IP networks.

The H.323 and Session Initiation Protocol (SIP) are two popular VoIP protocols that are found in

widespread implementation.

H.323

H.323 is a recommendation from the ITU Telecommunication Standardization Sector (ITU-T)

that defines the protocols to provide audio-visual communication sessions on any packet

network. The H.323 standard addresses call signaling and control, multimedia transport and

control, and bandwidth control for point-to-point and multi-point conferences.

It is widely implemented by voice and video conference equipment manufacturers, is used

within various Internet real-time applications such as GnuGK and NetMeeting and is widely

deployed by service providers and enterprises for both voice and video services over IP

networks.

xii

SIP

SIP (Session Initiation Protocol) is the Internet Engineering Task Force’s (IETF’s) standard for

multimedia conferencing over IP. It is an ASCII-based, application-layer control protocol

(defined in RFC 3261) that can be used to establish, maintain, and terminate calls between two

or more endpoints. Like other VoIP protocols, SIP is designed to address functions of signaling

and session management within a packet telephony network. Signaling allows call information

to be carried across network boundaries. Session management provides the ability to control

attributes of an end-to-end call.

Introduction

SIP provides capabilities to:

 Determine the location of the target endpoint -- SIP supports address resolution, name

mapping, and call redirection.

 Determine media capabilities of the target endpoint -- Via Session Description Protocol

(SDP), SIP determines the “lowest level” of common services between endpoints.

Conferences are established using only media capabilities that can be supported by all

endpoints.

 Determine the availability of the target endpoint -- A call cannot be completed because

the target endpoint is unavailable, SIP determines whether the called party is already on

the IP phone or does not answer in the allotted number of rings. It then returns a message

indicating why the target endpoint is unavailable.

 Establish a session between the origin and target endpoint -- The call can be completed,

SIP establishes a session between endpoints. SIP also supports mid-call changes, such as

the addition of another endpoint to the conference or the change of a media characteristic

or codec.

 Handle the transfer and termination of calls -- SIP supports the transfer of calls from one

endpoint to another. During a call transfer, SIP simply establishes a session between the

transferee and a new endpoint (specified by the transferring party) and terminates the

session between the transferee and the transferring party. At the end of a call, SIP

terminates the sessions between all parties.

SIP Components

SIP is a peer-to-peer protocol. The peers in a session are called User Agents (UAs). A user agent

can function as one of following roles:

 User Agent Client (UAC) -- A client application that initiates the SIP request.

 User Agent Server (UAS) -- A server application that contacts the user when a SIP request is

received and that returns a response on behalf of the user.

User Agent Client (UAC)

The UAC is an application that initiates up to six feasible SIP requests to the UAS. The six

requests issued by the UAC are: INVITE, ACK, OPTIONS, BYE, CANCEL and REGISTER. When the

SIP session is being initiated by the UAC SIP component, the UAC determines the information

essential for the request, which is the protocol, the port and the IP address of the UAS to which

the request is being sent. This information can be dynamic and will make it challenging to put

through a firewall. For this reason, it may be recommended to open the specific application type

on the firewall. The UAC is also capable of using the information in the request URI to establish

the course of the SIP request to its destination, as the request URI always specifies the host

which is essential. The port and protocol are not always specified by the request URI. Thus if the

request does not specify a port or protocol, a default port or protocol is contacted. It may be

preferential to use this method when not using an application layer firewall. Application layer

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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

firewalls like to know what applications are flowing through which ports and it is possible to use

content types of other applications other than the one you are trying to let through what has

been denied.

User Agent Server (UAS)

UAS is a server that hosts the application responsible for receiving the SIP requests from a UAC,

and on reception it returns a response to the request back to the UAC. The UAS may issue

multiple responses to the UAC, not necessarily a single response. Communication between UAC

and UAS is client/server and peer-to–peer.

Typically, a SIP endpoint is capable of functioning as both a UAC and a UAS, but it functions only

as one or the other per transaction. Whether the endpoint functions as a UAC or a UAS depends

on the UA that initiates the request.

Summary of Changes

This section describes the changes to this guide for each release and guide version.

Changes for Release 81, Guide Version 81.90

The following section is new for this version:

 Ringer Volume on page 841

Major updates have occurred to the following sections:

 Physical Features of IP Phones on page 1

 Key Features of IP Phones on page 14

 Connecting the Optional USB Flash Drive (Only Applicable to

SIP-T54S/T52S/T48G/T48S/T46G/T46S/T42S/T41S/T29G/T27G/CP860 IP Phones) on page

 Wi-Fi on page 65

 Bluetooth on page 205

 Call Recording on page 565

 Audio Codecs on page 842

 Appendix G: Reading Icons on page 1024

Changes for Release 81, Guide Version 81.71

Documentations of the newly released SIP-T54S/T52S, CP860 IP phones and EXP50 color-screen

expansion modules have been added.

xiv

Introduction

The following sections are new for this version:

 Connecting the Optional Expansion PSTN Box CPN10 (Only Applicable to CP860 IP Phones)

on page 37

 Linekey Length in Short on page 216

 PSTN Account on page 228

 Idle Recording on page 566

 Cloud on page 570

Major updates have occurred to the following sections:

 Missed Call Log on page 339

 Auto Answer on page 377

 Call Recording on page 565

 Ring Tones on page 810

Changes for Release 81, Guide Version 81.70

Documentations of the newly released SIP-T40G IP phones have been added.

The following sections are new for this version:

 Page Switch Key on page 208

 Backing up the Call Log on page 335

Major updates have occurred to the following sections:

 Upgrading Firmware from the Provisioning Server on page 144

 Power Indicator LED on page 167

 Label Length on page 213

 Call Display on page 237

 Directory List on page 327

 Search Source List In Dialing on page 330

 Missed Call Log on page 339

 Customizing a Local Contact File on page 342

 Auto Answer on page 377

 Do Not Disturb (DND) on page 401

 Call Forward on page 437

 Call Park on page 508

 Lightweight Directory Access Protocol (LDAP) on page 581

 Visual Alert and Audio Alert for BLF Pickup on page 601

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

 Busy Lamp Field (BLF) List on page 625

 Receiving RTP Stream on page 682

 Action URI on page 729

 Ring Tones on page 810

 Audio Codecs on page 842

 Jitter Buffer on page 870

 Transport Layer Security (TLS) on page 921

 Local Logging on page 948

 Syslog on page 956

Changes for Release 81, Guide Version 81.20

Major updates have occurred to the following sections:

 Wallpaper on page 178

 Screen Saver on page 188

Changes for Release 81, Guide Version 81.15

Documentations of the newly released SIP-T48S, SIP-T46S, SIP-T42S, SIP-T41S and SIP-T27G IP

phones have been added.

The following section is new for this version:

 Transparency on page 185

Major updates have occurred to the following sections:

 VPN on page 92

 Upgrading Firmware from the Provisioning Server on page 144

 Wallpaper on page 178

 Screen Saver on page 188

 Power Saving on page 195

 Backlight on page 200

xvi

 Account Registration on page 219

 Time and Date on page 243

 Language on page 261

 Customizing Softkey Layout Template File on page 283

 Dial Plan using Digit Map String Rules on page 309

 Call Number Filter on page 506

 Calling Line Identification Presentation (CLIP) on page 522

 Intercom on page 533

 Lightweight Directory Access Protocol (LDAP) on page 581

 Visual Alert and Audio Alert for BLF Pickup on page 601

 Server Redundancy on page 739

 Audio Codecs on page 842

 Methods of Transmitting DTMF Digit on page 874

 Appendix C: Trusted Certificates on page 994

Introduction

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xviii

Table of Contents

Introduction.................................................................................... v

About This Guide ....................................................................................................................................................................... v

Chapters in This Guide ............................................................................................................................................................. v

Related Documentations ....................................................................................................................................................... vi

Conventions Used in Yealink Documentations ........................................................................................................... vii

Reading the Configuration Parameter Tables .............................................................................................................. vii

Summary Table Format ............................................................................................................................................... viii

Configuration Parameter Table Format .................................................................................................................. ix

Recommended References ................................................................................................................................................... xi

Understanding VoIP Principle and SIP Components ................................................................................................ xii

VoIP Principle ................................................................................................................................................................... xii

SIP Components ............................................................................................................................................................. xiii

Summary of Changes ............................................................................................................................................................ xiv

Changes for Release 81, Guide Version 81.90 ................................................................................................... xiv

Changes for Release 81, Guide Version 81.71 ................................................................................................... xiv

Changes for Release 81, Guide Version 81.70 .................................................................................................... xv

Changes for Release 81, Guide Version 81.20 ................................................................................................... xvi

Changes for Release 81, Guide Version 81.15 ................................................................................................... xvi

Table of Contents ........................................................................ xix

Product Overview .......................................................................... 1

SIP IP Phone Models ................................................................................................................................................................. 1

Physical Features of IP Phones .................................................................................................................................... 1

Key Features of IP Phones .......................................................................................................................................... 14

Expansion Modules ................................................................................................................................................................ 16

Getting Started ............................................................................. 19

What IP Phones Need to Meet .......................................................................................................................................... 19

Yealink IP Phones in a Network ........................................................................................................................................ 19

Connecting the IP Phones ................................................................................................................................................... 20

Attaching the Stand and the Optional Wall Mount Bracket (not Applicable to CP860 IP Phones)

............................................................................................................................................................................................... 21

Connecting the Handset and Optional Headset (not Applicable to CP860 IP Phones) ................... 29

Connecting the Power and Network ..................................................................................................................... 31

Connecting the Optional USB Flash Drive (Only Applicable to

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SIP-T54S/T52S/T48G/T48S/T46G/T46S/T42S/T41S/T29G/T27G/CP860 IP Phones) ......................... 34

Connecting the Optional Expansion Microphones (Only Applicable to CP860 IP Phones) ........... 35

Connecting the Optional PC or Mobile Device (only applicable to CP860 IP phones) .................... 36

Connecting the Optional Expansion PSTN Box CPN10 (Only Applicable to CP860 IP Phones) ... 37

Initialization Process Overview .......................................................................................................................................... 37

Verifying Startup ..................................................................................................................................................................... 39

Setting Up Your System .............................................................. 41

Setting Up Your Phone Network ...................................................................................................................................... 41

DHCP ................................................................................................................................................................................... 42

DHCP Option ................................................................................................................................................................... 46

Configuring Network Parameters Manually ....................................................................................................... 51

Configuring Transmission Methods of the Internet Port and PC Port .................................................... 56

Configuring PC Port Mode ........................................................................................................................................ 60

Web Server Type ............................................................................................................................................................ 61

Wi-Fi .................................................................................................................................................................................... 65

VLAN ................................................................................................................................................................................... 71

IPv6 Support .................................................................................................................................................................... 83

VPN ...................................................................................................................................................................................... 92

Network Address Translation (NAT) ...................................................................................................................... 95

Quality of Service (QoS) ............................................................................................................................................ 113

802.1X Authentication ............................................................................................................................................... 116

Setting Up Your Phones with a Provisioning Server .............................................................................................. 127

Provisioning Points to Consider ............................................................................................................................ 127

Provisioning Methods ................................................................................................................................................ 128

Boot Files, Configuration Files and Resource Files ........................................................................................ 131

Setting Up a Provisioning Server .......................................................................................................................... 140

Upgrading Firmware ................................................................................................................................................... 143

Keeping User Personalized Settings after Auto Provisioning ................................................................... 153

Configuring Basic Features ....................................................... 165

Power Indicator LED ............................................................................................................................................................. 167

Notification Popups ............................................................................................................................................................. 173

Contrast ..................................................................................................................................................................................... 176

Wallpaper ................................................................................................................................................................................. 178

Transparency ........................................................................................................................................................................... 185

Screen Saver ............................................................................................................................................................................ 188

Power Saving .......................................................................................................................................................................... 195

Backlight ................................................................................................................................................................................... 200

Idle Clock Display .................................................................................................................................................................. 204

Bluetooth .................................................................................................................................................................................. 205

Page Switch Key ..................................................................................................................................................................... 208

Enable Page Tips ................................................................................................................................................................... 209

Table of Contents

Page Tips for Expansion Module .................................................................................................................................... 211

Label Length ............................................................................................................................................................................ 213

Linekey Length in Short ...................................................................................................................................................... 216

Account Registration ........................................................................................................................................................... 219

SIP Account .................................................................................................................................................................... 220

PSTN Account................................................................................................................................................................ 228

Multiple Line Keys per Account ...................................................................................................................................... 230

Multiple Call Appearances ................................................................................................................................................ 236

Call Display .............................................................................................................................................................................. 237

Display Method on Dialing ............................................................................................................................................... 241

Time and Date ........................................................................................................................................................................ 243

NTP Time Server ........................................................................................................................................................... 244

Time and Date Settings ............................................................................................................................................. 249

Daylight Saving Time (DST) ..................................................................................................................................... 254

Language .................................................................................................................................................................................. 261

Loading Language Packs .......................................................................................................................................... 262

Specifying the Language to Use............................................................................................................................ 269

Input Method .......................................................................................................................................................................... 271

Keypad Input Method Customization ................................................................................................................. 271

Specifying the Default Input Method.................................................................................................................. 275

Logo Customization ............................................................................................................................................................. 276

Customizing a Logo Template File ....................................................................................................................... 277

Configuring the Logo Shown on the Idle Screen ........................................................................................... 278

Softkey Layout ........................................................................................................................................................................ 281

Customizing Softkey Layout Template File ....................................................................................................... 283

Key As Send ............................................................................................................................................................................. 289

Dial Plan .................................................................................................................................................................................... 293

Dial Plan using XML Template Files ..................................................................................................................... 293

Dial Plan using Digit Map String Rules ............................................................................................................... 309

Emergency Dialplan ............................................................................................................................................................. 318

Hotline ....................................................................................................................................................................................... 322

Off Hook Hot Line Dialing ................................................................................................................................................. 325

Directory List ........................................................................................................................................................................... 327

Customizing a Directory Template File .............................................................................................................. 327

Search Source List In Dialing ............................................................................................................................................ 330

Customizing a Super Search Template File ...................................................................................................... 331

Call Log ...................................................................................................................................................................................... 333

Save Call Log ................................................................................................................................................................. 333

Backing up the Call Logs .......................................................................................................................................... 335

Call List Show Number ........................................................................................................................................................ 337

Missed Call Log ...................................................................................................................................................................... 339

Local Directory ....................................................................................................................................................................... 342

Customizing a Local Contact File .......................................................................................................................... 342

Configuring Local Directory .................................................................................................................................... 355

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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

Backing up the Local Contacts ............................................................................................................................... 359

Live Dialpad ............................................................................................................................................................................. 361

Speed Dial ................................................................................................................................................................................ 363

Call Waiting ............................................................................................................................................................................. 371

Auto Redial .............................................................................................................................................................................. 375

Auto Answer ............................................................................................................................................................................ 377

IP Direct Auto Answer ......................................................................................................................................................... 384

Allow IP Call ............................................................................................................................................................................. 386

Accept SIP Trust Server Only ............................................................................................................................................ 387

Call Completion ..................................................................................................................................................................... 389

Anonymous Call ..................................................................................................................................................................... 392

Anonymous Call Rejection ................................................................................................................................................ 397

Do Not Disturb (DND) ......................................................................................................................................................... 401

Busy Tone Delay .................................................................................................................................................................... 418

Return Code When Refuse ................................................................................................................................................ 420

Early Media .............................................................................................................................................................................. 422

180 Ring Workaround ......................................................................................................................................................... 422

Use Outbound Proxy in Dialog ....................................................................................................................................... 423

SIP Session Timer .................................................................................................................................................................. 425

Session Timer .......................................................................................................................................................................... 427

Call Hold ................................................................................................................................................................................... 431

Music on Hold (MoH) ................................................................................................................................................ 435

Call Forward ............................................................................................................................................................................. 437

Call Transfer ............................................................................................................................................................................. 460

Local Conference ................................................................................................................................................................... 463

Network Conference ............................................................................................................................................................ 464

Transfer on Conference Hang Up .................................................................................................................................. 466

Feature Key Synchronization ............................................................................................................................................ 468

Transfer Mode via Dsskey.................................................................................................................................................. 469

Allow Trans Exist Call ........................................................................................................................................................... 471

Directed Call Pickup ............................................................................................................................................................. 472

Group Call Pickup ................................................................................................................................................................. 484

Dialog Info Call Pickup ........................................................................................................................................................ 496

Recent Call In Dialing .......................................................................................................................................................... 499

ReCall ......................................................................................................................................................................................... 500

Call Number Filter ................................................................................................................................................................. 506

Call Park .................................................................................................................................................................................... 508

Calling Line Identification Presentation (CLIP) .......................................................................................................... 522

Connected Line Identification Presentation (COLP) ............................................................................................... 527

Mute ........................................................................................................................................................................................... 530

Allow Mute ..................................................................................................................................................................... 530

Keep Mute ...................................................................................................................................................................... 532

Intercom .................................................................................................................................................................................... 533

Outgoing Intercom Calls .......................................................................................................................................... 533

xxii

Table of Contents

Incoming Intercom Calls ........................................................................................................................................... 544

Call Timeout ............................................................................................................................................................................ 547

Ringing Timeout .................................................................................................................................................................... 548

Send user=phone ................................................................................................................................................................. 549

SIP Send MAC ......................................................................................................................................................................... 551

SIP Send Line........................................................................................................................................................................... 553

Reserve # in User Name ..................................................................................................................................................... 555

Password Dial.......................................................................................................................................................................... 557

Unregister When Reboot ................................................................................................................................................... 559

100 Reliable Retransmission ............................................................................................................................................. 561

Reboot in Talking .................................................................................................................................................................. 563

Answer By Hand .................................................................................................................................................................... 564

USB Recording ....................................................................................................................................................................... 565

Call Recording ............................................................................................................................................................... 565

Idle Recording ............................................................................................................................................................... 566

CSTA Control ........................................................................................................................................................................... 567

Quick Login .............................................................................................................................................................................. 569

Cloud .......................................................................................................................................................................................... 570

Configuring Advanced Features ............................................... 573

Remote Phone Book ............................................................................................................................................................ 574

Customizing Remote Phone Book Template File ........................................................................................... 574

Lightweight Directory Access Protocol (LDAP) ......................................................................................................... 581

Busy Lamp Field (BLF) .......................................................................................................................................................... 597

BLF Subscription ........................................................................................................................................................... 597

Visual Alert and Audio Alert for BLF Pickup ..................................................................................................... 601

BLF LED Mode ............................................................................................................................................................... 604

Configuring BLF LED Status and BLF Key Behavior ....................................................................................... 607

Configuring a BLF Key................................................................................................................................................ 619

Busy Lamp Field (BLF) List ................................................................................................................................................. 625

Hide Feature Access Codes ............................................................................................................................................... 633

Automatic Call Distribution (ACD) ................................................................................................................................. 635

Shared Call Appearance (SCA) ......................................................................................................................................... 643

Bridge Lines Appearance (BLA) ....................................................................................................................................... 653

Message Waiting Indicator (MWI) ................................................................................................................................. 656

Short Message Service (SMS) .......................................................................................................................................... 662

Multicast Paging .................................................................................................................................................................... 663

Sending RTP Stream ................................................................................................................................................... 664

Receiving RTP Stream ................................................................................................................................................ 682

Dsskey Recording (Record and URL Record) ............................................................................................................ 688

Hot Desking ............................................................................................................................................................................. 698

Logon Wizard ......................................................................................................................................................................... 706

Action URL ............................................................................................................................................................................... 709

Action URI ................................................................................................................................................................................ 729

xxiii

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

Configuring Trusted IP Address for Action URI .............................................................................................. 734

Scenario A - Capturing the Current Screen of the Phone .......................................................................... 737

Scenario B - Placing a Call via Web User Interface ........................................................................................ 738

Server Redundancy............................................................................................................................................................... 739

Server Domain Name Resolution .......................................................................................................................... 753

Static DNS Cache................................................................................................................................................................... 757

Real-Time Transport Protocol (RTP) Ports .................................................................................................................. 765

TR-069 Device Management ............................................................................................................................................ 767

XML Browser ........................................................................................................................................................................... 773

Enhanced DSS Keys .............................................................................................................................................................. 780

Some Guidelines for Configuring Enhanced DSS Keys ................................................................................ 780

Understanding Macro Action Strings .................................................................................................................. 780

Configuring EDK Feature .......................................................................................................................................... 785

Configuring EDK List................................................................................................................................................... 787

Configuring EDK Prompt .......................................................................................................................................... 788

Configuring EDK Soft Keys ...................................................................................................................................... 790

Configuring a Custom Key ....................................................................................................................................... 799

Example Macros ........................................................................................................................................................... 806

Configuring Audio Features ...................................................... 809

Redial Tone .............................................................................................................................................................................. 809

Ring Tones ............................................................................................................................................................................... 810

Distinctive Ring Tones ......................................................................................................................................................... 816

Tones .......................................................................................................................................................................................... 823

Voice Mail Tone ..................................................................................................................................................................... 830

Ringer Device for Headset ................................................................................................................................................ 832

Handset/Headset/Speakerphone Mode ..................................................................................................................... 834

Headset Prior .......................................................................................................................................................................... 835

Dual Headset ........................................................................................................................................................................... 837

Sending Volume .................................................................................................................................................................... 839

Ringer Volume ........................................................................................................................................................................ 841

Audio Codecs .......................................................................................................................................................................... 842

Supported Audio Codecs ......................................................................................................................................... 842

Packetization Time (PTime) ..................................................................................................................................... 863

Acoustic Clarity Technology ............................................................................................................................................. 865

Acoustic Echo Cancellation (AEC) ......................................................................................................................... 865

Background Noise Suppression (BNS) ................................................................................................................ 866

Automatic Gain Control (AGC) ............................................................................................................................... 867

Voice Activity Detection (VAD) .............................................................................................................................. 867

Comfort Noise Generation (CNG) ......................................................................................................................... 868

Jitter Buffer ..................................................................................................................................................................... 870

DTMF .......................................................................................................................................................................................... 874

Methods of Transmitting DTMF Digit ................................................................................................................. 874

Suppress DTMF Display ............................................................................................................................................ 880

xxiv

Table of Contents

Transfer via DTMF ........................................................................................................................................................ 882

DTMF Send Event Flash ............................................................................................................................................. 884

Play Local DTMF Tone ............................................................................................................................................... 886

Voice Quality Monitoring (VQM) .................................................................................................................................... 887

RTCP-XR ........................................................................................................................................................................... 887

VQ-RTCPXR .................................................................................................................................................................... 889

Configuring Security Features .................................................. 907

User and Administrator Passwords................................................................................................................................ 907

Auto Logout Time ................................................................................................................................................................. 909

Phone Lock .............................................................................................................................................................................. 910

Transport Layer Security (TLS) ......................................................................................................................................... 921

Secure Real-Time Transport Protocol (SRTP) ............................................................................................................ 932

Encrypting and Decrypting Files ..................................................................................................................................... 935

Configuration Parameters ........................................................................................................................................ 935

Encrypting and Decrypting Configuration Files .............................................................................................. 940

Encrypting and Decrypting Contact Files .......................................................................................................... 943

Incoming Signaling Validation ........................................................................................................................................ 943

Troubleshooting ......................................................................... 947

Troubleshooting Methods ................................................................................................................................................ 947

Viewing Log Files ......................................................................................................................................................... 947

Capturing Packets ........................................................................................................................................................ 962

Enabling Watch Dog Feature .................................................................................................................................. 964

Getting Information from Status Indicators ..................................................................................................... 966

Analyzing Configuration Files ................................................................................................................................. 966

Exporting All the Diagnostic Files ......................................................................................................................... 969

Ping and Traceroute ................................................................................................................................................... 970

Troubleshooting Solutions ................................................................................................................................................ 972

IP Address Issues.......................................................................................................................................................... 972

Time and Date Issues ................................................................................................................................................. 973

Display Issues ................................................................................................................................................................ 974

Phone Book Issues ...................................................................................................................................................... 974

Audio Issues ................................................................................................................................................................... 974

Wi-Fi and Bluetooth Issues ...................................................................................................................................... 975

Firmware and Upgrading Issues ............................................................................................................................ 976

Provisioning Issues ...................................................................................................................................................... 977

System Log Issues ....................................................................................................................................................... 978

Resetting Issues ............................................................................................................................................................ 978

Rebooting Issues .......................................................................................................................................................... 982

Protocols and Ports Issues ....................................................................................................................................... 984

Password Issues ............................................................................................................................................................ 987

Logo Issues ..................................................................................................................................................................... 987

xxv

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

Power and Startup Issues ......................................................................................................................................... 987

Other Issues ................................................................................................................................................................... 988

Appendix..................................................................................... 991

Appendix A: Glossary ........................................................................................................................................................... 991

Appendix B: Time Zones .................................................................................................................................................... 993

Appendix C: Trusted Certificates .................................................................................................................................... 994

Appendix D: Configuring DSS Keys ............................................................................................................................... 996

Appendix E: Auto Provisioning Flowchart (Keep User Personalized Configuration Settings) ........... 1017

Appendix F: Static Settings ............................................................................................................................................ 1018

Appendix G: Reading Icons ............................................................................................................................................ 1024

Appendix H: SIP (Session Initiation Protocol)......................................................................................................... 1035

RFC and Internet Draft Support .......................................................................................................................... 1035

SIP Request.................................................................................................................................................................. 1038

SIP Header ................................................................................................................................................................... 1039

SIP Responses ............................................................................................................................................................ 1040

SIP Session Description Protocol (SDP) Usage ............................................................................................. 1043

Appendix I: SIP Call Flows ............................................................................................................................................... 1043

Successful Call Setup and Disconnect ............................................................................................................. 1044

Unsuccessful Call Setup—Called User is Busy ............................................................................................... 1046

Unsuccessful Call Setup—Called User Does Not Answer ......................................................................... 1048

Successful Call Setup and Call Hold ................................................................................................................. 1050

Successful Call Setup and Call Waiting ........................................................................................................... 1053

Call Transfer without Consultation .................................................................................................................... 1057

Call Transfer with Consultation ........................................................................................................................... 1061

Always Call Forward ................................................................................................................................................. 1066

Busy Call Forward ..................................................................................................................................................... 1068

No Answer Call Forward ........................................................................................................................................ 1071

Call Conference ......................................................................................................................................................... 1074

Index ......................................................................................... 1079

xxvi

Product Overview

This chapter contains the following information about IP phones:

 SIP IP Phone Models

 Expansion Modules

SIP IP Phone Models

This section introduces SIP-T54S, SIP-T52S, SIP-T48G/S, SIP-T46G/S, SIP-T42G/S, SIP-T41P/S,

SIP-T40P/G, SIP-T29G, SIP-T27P/G, SIP-T23P/G, SIP-T21(P) E2, SIP-T19(P) E2 and CP860 IP phone

models. These IP phones are endpoints in the overall network topology, which are designed to

interoperate with other compatible equipments including application servers, media servers,

internet-working gateways, voice bridges, and other endpoints. These IP phones are

characterized by a large number of functions, which simplify business communication with a

high standard of security and can work seamlessly with a large number of SIP PBXs.

Product Overview

These IP phones provide a powerful and flexible IP communication solution for Ethernet TCP/IP

networks, delivering excellent voice quality. The high-resolution graphic display supplies

content in multiple languages for system status, call log and directory access. IP phones also

support advanced functionalities, including LDAP, Busy Lamp Field, Sever Redundancy and

Network Conference.

IP phones comply with the SIP standard (RFC 3261), and they can only be used within a network

that supports this model of phone.

For a list of key features available on Yealink IP phones running the latest firmware, refer to Key

Features of IP Phones on page 14.

Physical Features of IP Phones

This section lists the available physical features of SIP-T54S, SIP-T52S, SIP-T48G/S, SIP-T46G/S,

SIP-T42G/S, SIP-T41P/S, SIP-T40P/G, SIP-T29G, SIP-T27P/G, SIP-T23P/G, SIP-T21(P) E2 and

SIP-T19(P) E2 desktop IP phones and CP860 IP conference phones.

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

SIP-T54S

Physical Features:

- 4.3” 480 x 272 pixel color display with backlight

- 16 VoIP accounts, Broadsoft Validated/Asterisk

- HD Voice: HD Codec, HD Handset, HD Speaker

- 36 dedicated hard keys and 4 context-sensitive soft keys

- 1*RJ9 (4P4C) handset port

- 1*RJ9 (4P4C) headset port

- 2*RJ45 10/100/1000Mbps Ethernet ports

- 14 LEDs: 1*power, 10*line, 1*mute, 1*headset, 1*speakerphone

- Power adapter: AC 100~240V input and DC 5V/2A output

- Power over Ethernet (IEEE 802.3af)

- Built-in USB port, support wired USB headset, expansion module EXP50, USB flash drive,

wireless USB headset and Wi-Fi

- Wall Mount

- Hearing aid compatible (HAC) handset

- Bulit-in Bluetooth

Compatible

SIP-T52S

Physical Features:

Product Overview

- 2.8” 320 x 240 pixel color display with backlight

- 12 VoIP accounts, Broadsoft Validated/Asterisk

- HD Voice: HD Codec, HD Handset, HD Speaker

- 32 dedicated hard keys and 4 context-sensitive soft keys

- 1*RJ9 (4P4C) handset port

- 1*RJ9 (4P4C) headset port

- 2*RJ45 10/100/1000Mbps Ethernet ports

- 11 LEDs: 1*power, 8*line, 1*mute, 1*headset

- Power adapter: AC 100~240V input and DC 5V/2A output

- Power over Ethernet (IEEE 802.3af)

- Built-in USB port, support wired USB headset, expansion module EXP50, USB flash drive,

wireless USB headset and Wi-Fi

- Wall Mount

- Hearing aid compatible (HAC) handset

- Bulit-in Bluetooth

Compatible

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

SIP-T48G/S

Physical Features:

- 7” 800 x 480 pixel color touch screen with backlight

- 24 bit depth color

- 16 VoIP accounts, Broadsoft Validated/Asterisk

- HD Voice: HD Codec, HD Handset, HD Speaker

- 26 dedicated hard keys

- 1*RJ9 (4P4C) handset port

- 1*RJ9 (4P4C) headset port

- 2*RJ45 10/100/1000Mbps Ethernet ports

- 1*RJ12 (6P6C) expansion module port

- 4 LEDs: 1*power, 1*mute, 1*headset, 1*speakerphone

- Power adapter: AC 100~240V input and DC 5V/2A output

- Power over Ethernet (IEEE 802.3af)

- Built-in USB port, support USB flash drive, Bluetooth headset and Wi-Fi

- Wall Mount

Compatible

- Hearing aid compatible (HAC) handset (only applicable to SIP-T48S IP phones)

+ 1078 hidden pages

Yealink SIP-T2 Series, SIP-T19 E2 T4 Series, SIP-T5 Series, CP860, SIP-T19P E2 T4 Series Administrator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

About This Guide

Chapters in This Guide

Related Documentations

Conventions Used in Yealink Documentations

Reading the Configuration Parameter Tables

Summary Table Format

Configuration Parameter Table Format

Recommended References

Understanding VoIP Principle and SIP Components

VoIP Principle

SIP Components

Summary of Changes

Changes for Release 81, Guide Version 81.90

Changes for Release 81, Guide Version 81.71

Changes for Release 81, Guide Version 81.70

Changes for Release 81, Guide Version 81.20

Changes for Release 81, Guide Version 81.15

Table of Contents

Product Overview

SIP IP Phone Models

Physical Features of IP Phones