YEALINK T21P IP Phone User Manual

YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD. IP Phone Users Manual

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T21P User Manual HTML Version

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translating into another language or format.

When this publication is made available on media, Yealink Network Technology CO., LTD. gives

its consent to downloading and printing copies of the content provided in this file only for private

use but not for redistribution. No parts of this publication may be subject to alteration,

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damages arising from use of an illegally modified or altered publication.

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE

SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND

RECOMMENDATIONS IN THIS GUIDE ARE BELIEVED TO BE ACCURATE AND PRESENTED

WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL

RESPONSIBILITY FOR THEIR APPLICATION OF PRODUCTS.

YEALINK NETWORK TECHNOLOGY CO., LTD. MAKES NO WARRANTY OF ANY KIND WITH

REGARD TO THIS GUIDE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Yealink Network Technology

CO., LTD. shall not be liable for errors contained herein nor for incidental or consequential

damages in connection with the furnishing, performance, or use of this guide.

Hereby, Yealink Network Technology CO., LTD. declares that this phone is in conformity

with the essential requirements and other relevant provisions of the CE, FCC.

This device is marked with the CE mark in compliance with EC Directives 2006/95/EC and 2004/108/EC.

This device is compliant with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference that may cause undesired

operation.

iii

Note:

This

device is

tested

and complies

with

the limits for

Class

digital

device, pursuant

Part

of the

FCC

Rules.

These

limits

are

designed

provide reasonable

protection

against harmful

interference

residential

installation.

This equipment

generates, uses,

and

can

radiate

radio

frequency

energy

and,

if not

installed

and used

accordance

with

the

instructions,

may

cause harmful

interference

to radio

communications.

However, there is

guarantee that

interference

will

not

occur

particular

installation.

this equipment

does

cause harmful

interference

radio

television reception,

which can

determined

turning

the equipment

off and on,

the

user

is encouraged to

try

correct

the

interference by

one

the

following

measures:

Reorient

relocate the receiving

antenna.

Increase

the

separation

between

the

equipment

and receiver.

Connect

the

equipment

into

outlet

on a

circuit

different

from

that

which

the

receiver

connected.

Consult

the

dealer

or an experience

radio/TV

technician for help.

To avoid the potential effects on the environment and human health as a result of the

presence of hazardous substances in electrical and electronic equipment, end users of

electrical and electronic equipment should understand the meaning of the crossed-out

wheeled bin symbol. Do not dispose of WEEE as unsorted municipal waste and have to

collect such WEEE separately.

. Changes or modifications not expressly approved by the party responsible for compliance could

void the user’s authority to operate the equipment.

Yealink SIP-T21P firmware contains third-party software under the GNU General Public License (GPL).

Yealink uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms and

conditions of the license.

The original GPL license, source code of components licensed under GPL and used in Yealink products can

be downloaded online:

http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.

About This Guide

Thank you for choosing the SIP-T21P IP phone, exquisitely designed to provide business

telephony features, such as Call Hold, Call Transfer, Busy Lamp Field, Multicast Paging

and Conference over an IP network.

This guide provides everything you need to quickly use your new phone. First, verify

with your system administrator that the IP network is ready for phone configuration. Also

be sure to read the Packaging Contents and Regulatory Notices sections in this guide

before you set up and use the SIP-T21P IP phone.

If this is your first time using the SIP-T21P IP phone, we recommend that you first refer to

the and , available online:

http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.

Note

This is the first edition based on firmware version 71. Topics provided in this guide

include:

Chapter 1 Overview

Chapter 2 Getting Started

Chapter 3 Customizing Your Phone

Chapter 4 Basic Call Features

Chapter 5 Advanced Phone Features

Shared Line, Busy Lamp Field List, Network Directory and Network Call Log features are

hidden for IP phones in neutral version, which are designed for BroadWorks environment.

Please contact your system administrator for more information.

User Guide for the SIP-T21P IP Phone

Table of Contents

vii

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

In This Guide ......................................................................................................................... v

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

O v e r v i e w .................................................................................. 1

Hardware Component Instructions .................................................................................... 1

Icon Instructions .................................................................................................................... 3

LED Instructions ..................................................................................................................... 4

User Interfaces ..................................................................................................................... 5

Phone User Interface ........................................................................................................ 5

Web User Interface ........................................................................................................... 5

Documentations ................................................................................................................... 8

Getting Started ......................................................................... 9

Packaging Contents ............................................................................................................. 9

Phone Installation ............................................................................................................... 11

Phone Initialization ............................................................................................................. 13

Phone Status ....................................................................................................................... 13

Basic Network Settings ...................................................................................................... 14

Registration ......................................................................................................................... 16

Idle Screen .......................................................................................................................... 16

Customizing Your Phone ......................................................... 17

General Settings ................................................................................................................ 17

Contrast ............................................................................................................................ 17

Language ......................................................................................................................... 18

Time & Date ..................................................................................................................... 19

Administrator Password ................................................................................................. 20

Key as Send ..................................................................................................................... 21

Keypad Lock .................................................................................................................... 21

Audio Settings .................................................................................................................... 24

Volume ............................................................................................................................. 24

Ring Tones ........................................................................................................................ 25

Contact Management ....................................................................................................... 27

Directory........................................................................................................................... 27

User Guide for the SIP-T21P IP Phone

viii

Local Directory ................................................................................................................ 28

Blacklist ............................................................................................................................ 38

Remote Phone Book ........................................................................................................ 40

Call History Management ................................................................................................ 42

System Customizations ...................................................................................................... 44

Logo Customization ........................................................................................................ 44

Headset Use .................................................................................................................... 45

DSS Keys .......................................................................................................................... 46

Account Management ................................................................................................... 54

Dial Plan ........................................................................................................................... 55

Emergency Number ........................................................................................................ 61

Live Dialpad .................................................................................................................... 62

Hotline .............................................................................................................................. 63

Basic Call Features ................................................................. 65

Placing Calls ....................................................................................................................... 65

Answering Calls ................................................................................................................. 67

Ending Calls ........................................................................................................................ 68

Redialing Numbers ............................................................................................................ 69

Recent Call In Dialing ........................................................................................................ 69

Auto Answer ....................................................................................................................... 70

Auto Redial .......................................................................................................................... 71

Call Completion ................................................................................................................. 72

Call Return ........................................................................................................................... 73

Call Mute ............................................................................................................................. 73

Call Hold/Resume ............................................................................................................... 74

Do Not Disturb (DND) ........................................................................................................ 75

Call Forward ....................................................................................................................... 78

Call Transfer ........................................................................................................................ 84

Call Waiting ........................................................................................................................ 86

Conference ......................................................................................................................... 86

Local Conference ............................................................................................................ 87

Network Conference ...................................................................................................... 87

Call Park .............................................................................................................................. 89

Call Pickup .......................................................................................................................... 90

Anonymous Call ................................................................................................................. 95

Anonymous Call Rejection ................................................................................................ 96

Advanced Phone Features ..................................................... 97

Busy Lamp Field (BLF) ....................................................................................................... 97

Call Recording .................................................................................................................... 99

Hot Desking ...................................................................................................................... 101

Intercom ............................................................................................................................ 103

Table of Contents

Outgoing Intercom Calls .............................................................................................. 103

Incoming Intercom Calls .............................................................................................. 103

Multicast Paging ............................................................................................................... 105

Sending RTP Stream ..................................................................................................... 105

Receiving RTP Stream ................................................................................................... 107

Music on Hold ................................................................................................................... 108

Automatic Call Distribution (ACD).................................................................................. 109

Messages .......................................................................................................................... 111

Short Message Service (SMS) .................................................................................... 111

Voice Mail ...................................................................................................................... 113

Message Waiting Indicator (MWI) ............................................................................. 114

Troubleshooting .....................................................................119

Regulatory Notices ................................................................129

Service Agreements ........................................................................................................ 129

Limitations of Liability ...................................................................................................... 129

Safety Instructions ............................................................................................................ 129

Appendix A - Time Zones ......................................................131

I n d e x ......................................................................................133

User Guide for the SIP-T21P IP Phone

Overview

This chapter provides the overview of the SIP-T21P IP phone. Topics include:

Hardware Component Instructions

Icon Instructions

LED Instructions

User Interfaces

Documentations

If you require additional information or assistance with your new phone, contact your

system administrator.

The main hardware components of the SIP-T21P IP phone are the LCD screen and the

keypad.

User Guide for the SIP-T21P IP Phone

Hardware component instructions of the SIP-T21P IP phone are:

Item Description

LCD Screen

Shows information about calls, messages, soft keys,

time, date and other relevant data:

caller ID, call duration

(for example, )

"Saving config file!")

Power Indicator LED

Indicates phone power status and phone status.

Line Keys Use these keys to activate up to two accounts and

assign

various features.

MESSAGE Key Indicates and accesses voice mails.

HEADSET Key Toggles the headset mode.

TRAN Key Transfers a call to another party.

RD Key Redials a previously dialed number.

Speakerphone Key Toggles the hands-free speakerphone mode.

Volume Key Adjusts the volume of the handset, headset, speaker,

and ringer.

Keypad Provides the digits, letters and special characters in

context-sensitive applications.

Scroll through the displayed information.

Confirms actions or answers incoming calls.

Cancels actions, rejects incoming calls, mutes or

un-mutes calls.

Soft Keys Label automatically to identity their context-sensitive

features.

Overview

Icons appearing on the LCD screen are described in the following table:

Icon Description

Network is unavailable

Registered successfully

Registering

Hands-free speakerphone mode

Handset mode

Headset mode

Multi-lingual lowercase letters input mode

Multi-lingual uppercase letters input mode

Alphanumeric input mode

Numeric input mode

Multi-lingual uppercase and lowercase

letters input mode

Voice Mail

Text Message

Auto Answer

Do Not Disturb

Call Forwarded/Forwarded Calls

Call Hold

Call Mute

Ringer volume is 0

User Guide for the SIP-T21P IP Phone

Icon Description

Keypad Lock

Received Calls

Placed Calls

Missed Calls

Recording box is full

A call cannot be recorded

Recording starts successfully

Recording cannot be started

Recording cannot be stopped

Line key LED

LED Status Description

Solid green

The line is in conversation.

The line is seized.

Fast flashing green The line receives an incoming call.

Slow flashing green The call is placed on hold.

Off The line is inactive.

Line key LED (configured as BLF key)

LED Status Description

Solid green The monitored user is busy.

Fast flashing green The monitored user receives an incoming call.

Off The monitored user is idle.

The monitored user does not exist.

Overview

Two ways to customize configurations of your SIP-T21P IP phone:

The user interface on the IP phone.

The user interface in a web browser on your PC.

The hardware components keypad and LCD screen constitute the phone user interface,

which allows the user to execute all call operation tasks and basic configuration

changes directly on the phone. In addition, you can use the web user interface to

access all configuration settings. In many cases, either the phone user interface and/or

the web user interface interchangeably. However, in some cases, it is only possible to

use one or the other interface to operate the phone and change settings.

You can customize your phone by pressing the Menu soft key to access the phone user

interface. The Advanced Settings option is only accessible to the administrator, and the

default administrator password is admin (case-sensitive). For more information on

customizing your phone with the available options from the phone user interface, refer

to Customizing Your Phone on page 17.

In addition to the phone user interface, you can also customize your phone via web user

interface. In order to access the web user interface, you need to know the IP address of

your new phone. To obtain the IP address, press the OK key on the phone. Enter the IP

address (e.g., http://192.168.0.10 or 192.168.0.10) in the address bar of web browser on

your PC. The default administrator user name and password are both admin

(case-sensitive).

The options you can use to customize the IP phone via phone user interface and/or via

web user interface are listed in the following table:

Options Phone User Interface Web User Interface

Status

--IP Address

--IPv6

--MAC

--Firmware

--Network

--Phone

--Accounts

Basic Phone Settings

User Guide for the SIP-T21P IP Phone

Options Phone User Interface Web User Interface

--Contrast

--Language

--Time & Date

--Administrator Password

--Key as Send

--Keypad Lock

-- Volume

--Ring Tones

--Contact Management

--Directory

--Local Directory

--Blacklist

--Remote Phone Book

--Call History Management

--Logo Customization

--Headset Prior

--DSS Keys

--Account Registration

--Dial Plan

--Emergency Number

--Live Dialpad

--Hotline

Basic Call Features

--Recent Call In Dialing

--Auto Answer

--Auto Redial

--Call Completion

--Call Return

--DND

--Call Forward

--Call Transfer

--Call Waiting

--Conference

--Call Park

--Call Pickup

--Anonymous Call

--Anonymous Call Rejection

Advanced Phone Features

--BLF

--Call Recording

--Hot Desking

Overview

Options Phone User Interface Web User Interface

--Intercom

--Multicast Paging

--Music on Hold

--ACD

--Messages

SIP Account

--User Options

--Register Status

--Activation

--Label

--Display Name

--Register Name

--User Name

--Password

--SIP Server1/2

--Server Option

--Server Port

--Outbound Status

--Outbound Proxy

--NAT Traversal

--STUN Status

--STUN Server

Note

The

table above

list

most of the

eature options

Please refer to the rel

evant

section

s for

more information.

User Guide for the SIP-T21P IP Phone

The following table shows documentations available for the SIP-T21P IP phone.

Name Contents Where found Format/Language

Quick Installation

Guide

Basic setup of the

phone

In the

package PDF/English

Quick Reference

Guide

Basic call features and

phone customizations

In the

package PDF/English

User Guide

Phone/Web user

interface settings

Basic call features and

advanced phone

features

CD attached

in the

package

PDF/English

Note

You can also download the latest documentations online:

http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.

Getting Started

This chapter provides basic installation instructions and information for obtaining the

best performance with the SIP-T21P IP phone. Topics include:

Packaging Contents

Phone Installation

Phone Initialization

Phone Status

Basic Network Settings

Registration

Idle Screen

If you require additional information or assistance with your new phone, contact your

system administrator.

The following components are included in your SIP-T21P IP phone package:

SIP-T21P IP Phone

Phone Stand

User Guide for the SIP-T21P IP Phone

Power Adapter

Handset & Handset Cord

Ethernet Cable

Quick Installation Guide & Quick Reference Guide

CD-ROM

Check the list before installation. If you find anything missing, contact your system

administrator.

Getting Started

If your phone is already installed, proceed to Phone Initialization on page 13.

This section introduces how to install the phone:

1) Attach the stand

2) Connect the handset and optional headset

3) Connect the network and power

1) Attach the stand

2) Connect the handset and optional headset

Note

3) Connect the network and power

You have two options for power and network connections. Your system administrator will

advise you which one to use.

AC power

Power over Ethernet (PoE)

A h

eadset is not

included

in the pack

ing

contents

ontact your

system administrator

for more information.

User Guide for the SIP-T21P IP Phone

AC Power

To connect the AC power:

1. Connect the DC plug on the power adapter to the DC5V port on the phone and

connect the other end of the power adapter into an electrical power outlet.

2. Connect the included or a standard Ethernet cable between the Internet port on the

phone and the one on the wall or switch/hub device port.

Power over Ethernet

With the included or a regular Ethernet cable, the SIP-T21P IP phone can be powered

from a PoE-compliant switch or hub.

To connect the PoE:

1. Connect the Ethernet cable between the Internet port on the phone and an

available port on the in-line power switch/hub.

Note

If in

adapter. Make sure the switch/hub is PoE-compliant.

The phone can also share the network with another network device such as a PC

(personal computer). It is an optional connection.

Important! Do not unplug or remove power to the phone while it is updating firmware

and configurations.

Getting Started

After your phone is powered on, the system boots up and performs the following steps:

Automatic Phone Initialization

The phone finishes the initialization by loading the saved configuration. The LCD screen

DHCP (Dynamic Host Configuration Protocol)

The phone attempts to contact a DHCP server in your network to obtain valid IPv4 and

IPv6 network settings (e.g., IP address, subnet mask, default gateway address and DNS

address) by default.

Note

You can view phone status via phone user interface or web user interface.

Available information of phone status includes:

Network status (e.g., IPv4 status, IPv6 status, IP mode and MAC address).

Phone status (e.g., device model, hardware version, firmware version, product ID,

MAC address and device certificate status: factory, installed and not installed).

Account status (e.g., the register status of SIP accounts).

To view the phone status via phone user interface:

1. Press , or press Menu->Status.

2. Press or to scroll through the list and view the specific information.

To view the phone status via web user interface:

1. Open the web browser of your computer.

2. Enter the IP addres , and then press Enter.

If your network does not use DHCP, proceed to Basic Network Settings on page 14.

User Guide for the SIP-T21P IP Phone

3. Enter the user name (admin) and password (admin) in the login page.

4. Click Confirm to login.

The phone status is displayed on the first page of the web user interface.

If your phone cannot contact a DHCP server for any reason, you need to configure

network settings manually. The IP phone can support either or both IPv4 and IPv6

addresses.

To configure the IP address mode via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN

Getting Started

Port.

2. Press or to select IPv4, IPv6 or IPv4 & IPv6 from the IP Mode field.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

To configure a static IPv4 address via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN

Port->IPv4->Static IP Client.

2. Enter the desired values in the IP Address, Subnet Mask, Default Gateway, Pri.DNS

and Sec.DNS fields respectively.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

To configure a static IPv6 address via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN

Port->IPv6->Static IPv6 Client.

2. Enter the desired values in the IPv6 , IPv6 Prefix, IPv6 Gateway, IPv6 Pri.DNS and

IPv6 Sec.DNS fields respectively.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

If you are using an xDSL modem for IPv4 network connection, you can connect your

phone to the Internet via PPPoE mode. Set the WAN port as a PPPoE port. The PPPoE port

will perform a PPP negotiation to obtain the IP address. Contact your system

administrator for the PPPoE user name and password.

User Guide for the SIP-T21P IP Phone

To configure PPPoE via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN

Port->IPv4->PPPoE IP Client.

2. Enter the user name and password in the corresponding fields.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

Note

Generally, your phone will be deployed with multiple other phones. In this case, your

system administrator will configure the phone parameters beforehand, so that after you

start up your phone, the phone will be registered and ready for use. If your phone is not

registered, you may have to register it. For more information on how to register your

phone, refer to Account Management on page 54.

If the phone has successfully started up, the idle screen will be shown as below:

The idle screen shows the label of current account, time and date, and four soft keys.

Using the wrong network parameters may result in inaccessibility of your phone and may

also have an impact on your network performance. For more information on these

parameters, contact your system administrator.

Customizing Your Phone

You can customize your SIP-T21P IP phone by personally configuring certain settings, for

example, contrast, language and time & date.

local directory manually or from call history. You can also personalize different ring

tones for different callers.

This chapter provides basic operating instructions for customizing your phone. Topics

include:

General Settings

Audio Settings

Contact Management

Call History Management

System Customizations

If you require additional information or assistance with your new phone, contact your

system administrator.

You can configure the contrast of the LCD screen to a comfortable level.

To configure the contrast via phone user interface:

1. Press Menu->Settings->Basic Setting->Contrast.

2. Press or , or the Switch soft key to increase or decrease the intensity of

contrast.

The default contrast level is 6.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

Contrast is configurable via web user interface at the path Settings->Preference.

User Guide for the SIP-T21P IP Phone

The default language of the phone user interface is English. The phone will detect and

use the same language as which of your web browser for the web user interface. If the

language of your web browser is not supported by the phone, the web user interface

will use English. You can change the language for the phone user interface and the web

user interface respectively.

Note

To change the language for the phone user interface:

1. Press Menu->Settings->Basic Setting->Language.

2. Press or to select the desired language.

3. Press the Save soft key to accept the change.

Text displayed on the LCD screen will change to the selected language.

To change the language for the web user interface:

1. Click on Settings->Preference.

2. Select the desired language from the pull-down list of Language.

Not a

of the

support

ed l

anguages

are

available for selection. The available languages

depend on the language packs currently loaded to the IP phone. Please contact your

system administrator for more information on the available languages of your new

phone.

Customizing Your Phone

3. Click Confirm to accept the change.

Text displayed on the web user interface will change to the selected language.

The time and date are displayed on the LCD screen when the phone is idle. If the phone

cannot obtain the time and date from the Simple Network Time Protocol (SNTP) server,

you need to configure the time and date manually. For more information on the SNTP

server, contact your system administrator.

To configure the SNTP settings via phone user interface:

1. Press Menu->Settings->Basic Setting->Time & Date->SNTP Settings.

2. Press or , or the Switch soft key to select the time zone that applies to your

area from the Time Zone field.

The default time zone is "+8 China(Beijing)".

3. Enter the domain names or IP addresses in the NTP Server 1 and NTP Server 2 fields

respectively.

4. Press or , or the Switch soft key to select the desired value from the DST

field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Note

To configure the time and date manually via phone user interface:

1. Press Menu->Settings->Basic Setting->Time & Date->Manual Settings.

2. Enter the specific date in the Date field.

3. Enter the specific time in the Time field.

lease refer to

Appendix A

Time Zones

for

the

list of available time zones on the IP

phone.

User Guide for the SIP-T21P IP Phone

4. Press the Save soft key to accept the change.

The date and time displayed on the LCD screen will change accordingly.

To configure the time and date format via phone user interface:

1. Press Menu->Settings->Basic Setting->Time & Date->Time & Date Format.

2. Press or , or the Switch soft key to select the desired time format from the

Clock field.

3. Press or , or the Switch soft key to select the desired date format from the

Date Format field.

4. Press the Save soft key to accept the change or the Back soft key to cancel.

There are 7 available date formats. For example, for WWW DD MMM ,

WWW represents the abbreviation of the week DD s the two-digit day,

MMM s the first three letters of the month.

The date formats you need to know:

Date Format Example(2013-1-16)

WWW MMM DD Wed Jan 16

DD-MMM-YY 16-Jan-13

YYYY-MM-DD 2013-01-16

DD/MM/YYYY 16/01/2013

MM/DD/YY 01/16/13

DD MMM YYYY 16 Jan 2013

WWW DD MMM Wed 16 Jan

Time and date is configurable via web user interface at the path Settings->Time & Date.

The Advanced Settings option is only accessible to the administrator. The default

administrator password is admin . For security reasons, you should change the default

administrator password as soon as possible.

Customizing Your Phone

To change the administrator password via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Set Password.

2. Enter the current password in the Current PWD field.

3. Enter the new password in the New PWD field.

4. Enter the new password again in the Confirm PWD field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Administrator password is configurable via web user interface at the path

Security->Password.

You can set the perform as a send key while dialing.

To configure key as send via phone user interface:

1. Press Menu->Features->Key as Send.

2. Press or , or the Switch soft key to select # or * from the Key as Send field,

or select Disable to disable this feature.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

Key as send is configurable via web user interface at the path Features->General

Information.

You can lock the keypad of your phone temporarily when you are not using it. This

feature helps you to protect your phone from unauthorized use.

Keypad lock consists of the following:

Menu Key: The Menu soft key is locked. You cannot access the menu of the

User Guide for the SIP-T21P IP Phone

phone until unlocked.

Function Keys: The function keys are locked. You cannot use the MESSAGE, RD,

TRAN, OK, X, navigation keys, soft keys and line keys until

unlocked.

All Keys: All keys are locked except the Volume key. You are only allowed

to dial emergency numbers, reject incoming calls by pressing

the X key, answer incoming calls by lifting the handset, pressing

the Speakerphone key, the HEADSET key or the OK key, mute an

active call by pressing the X key, place an active call on hold by

pressing the Hold soft key, resume the held call by pressing the

Resume soft key, and end the call by hanging up the handset or

pressing the Speakerphone key.

Note

To activate the keypad lock via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Keypad Lock.

2. Press or , or the Switch soft key to select the desired type from the Keypad

Lock field.

3. Press the Save soft key to accept the change.

4. Long press to lock the keypad immediately when the phone is idle.

The LCD screen prompts Keypad locked. and displays the icon .

You can configure the interval (in seconds) to automatically lock the keypad instead of

long pressing .

To configure the interval of automatic keypad lock via web user interface:

1. Click on Features->Phone Lock.

The emergency number

setting, if desired, must be made before lock

ctivation

For

more information, refer to Emergency Number on page 61.

Customizing Your Phone

2. Enter the desired interval in the Phone Lock Time Out (0~3600s) field.

3. Click Confirm to accept the change.

Note

To unlock the keypad, you must know the keypad unlock PIN of the phone. The default

keypad unlock PIN is 123 .

To change the keypad unlock PIN via phone user interface:

1. Press Menu->Settings->Basic Setting->Phone Unlock PIN.

2. Enter the current PIN in the Current PIN field.

3. Enter the new PIN in the New PIN field.

4. Enter the new PIN again in the Confirm PIN field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Note

he default interval is 0 second

, that is, you can long press

to lock the keypad only.

The interval of automatic keypad lock is configurable via web user interface only.

The

nlock PIN length must be within 15 characters.

User Guide for the SIP-T21P IP Phone

To unlock the keypad via phone user interface:

1. Press any locked key, the LCD screen prompts Please Enter PIN .

2. Enter the PIN in the PIN field.

3. Press the Confirm soft key to unlock the keypad.

The icon disappears from the LCD screen.

You can long press or wait for a period of time (if configured) to lock the

keypad again.

Note

To deactivate the keypad lock via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Keypad Lock.

2. Press or , or the Switch soft key to select Disable from Keypad Lock field.

3. Press the Save soft key to accept the change.

Keypad lock is configurable via web user interface at the path Features->Phone Lock.

You can press the Volume key to adjust the ringer volume when the phone is idle. You

can also press the Volume key to adjust the receiver volume of currently engaged audio

devices (handset, speakerphone or headset) when the phone is in use.

You can also unlock the keypad by administrator password. When you enter the

administrator password to unlock the keypad, the phone will turn to the Reset Phone PIN

screen.

Customizing Your Phone

To adjust the volume when the phone is idle:

1. Press to adjust the ringer volume.

Note

To adjust the volume when the phone is during a call:

1. Press to adjust the volume of currently engaged audio device

(handset, speakerphone or headset).

Ring tones are used to indicate incoming calls. You can select different ring tones to

distinguish different accounts registered on your phone, or to distinguish your phone

To select a ring tone for the phone via phone user interface:

1. Press Menu->Settings->Basic Setting->Ring Tone.

2. Press or to select the desired ring tone.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

If the ringer volume is adjusted to minimum, the icon will appear on the LCD screen.

User Guide for the SIP-T21P IP Phone

To select a ring tone for the account via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Basic.

4. Select the desired ring tone from the pull-down list of Ring Type.

If Common is selected, this account will use the ring tone selected for the phone.

Refer to the above instruction.

5. Click Confirm to accept the change.

Note

To upload a custom ring tone for your phone via web user interface:

1. Click on Settings->Preference.

2. Click Browse to locate a ring tone (file format must be *.wav) file from your local

system.

A ring tone for the account is configurable via web user interface only.

Customizing Your Phone

3. Click Upload to upload the file.

Note

This section provides the operating instructions for managing contacts. Topics include:

Directory

You can use this key feature to easily access frequently used lists. For more information,

refer to Directory on page 27.

Dependencies:

Usage: Press the DSS key to immediately access to frequently used lists.

Note

You can customize the soft keys, navigation keys and function keys on the keypad.

To customize the programmable keys via web user interface:

1. Click on DSSKey->Programmable Key.

he DSS key

performs the same function as the

soft

key

when the phone is idle.

User Guide for the SIP-T21P IP Phone

2. Customize specific features for these keys.

3. Click Confirm to accept the change.

You can click Reset to default to reset custom settings to defaults.

Note

You can register one or multiple accounts on the SIP-T21P IP phone. You can also

configure each line key to associate with an account or configure multiple line keys to

associate with an account.

To register an account via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Accounts.

2. Select the desired account and then press the Enter soft key.

3. Select Enable from the Activation field.

4. Enter the desired values in the Label, Display Name, Register Name, User Name,

Password and Sip Server1/2 fields respectively. Contact your system administrator

for more information.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Programmable keys are configurable via web user interface only.

Customizing Your Phone

You can repeat steps 2 to 5 to register more accounts.

To disable an account via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Accounts.

2. Select the desired account and then press the Enter soft key.

3. Select Disable from the Activation field to disable the account.

4. Press the Save soft key to accept the change or the Back soft key to cancel.

Account registration is configurable via web user interface at the path

Account->Register.

You can configure multiple line keys to associate with an account. This enhances call

visualization and simplifies call handling.

Incoming calls to this account will be distributed evenly among the available line keys.

Outgoing calls will be distributed similarly.

Dial plan is a string of characters that governs the way your SIP-T21P IP phone processes

the inputs received from your phone keypad. The SIP-T21P IP phone supports the

following dial plan features:

Replace Rule

Dial-now

Area Code

Block Out

The basic expression syntax you need to know:

The dot multiple placeholders for any

character. Example:

12. would match 123 , 1234 , 12345 , "12abc", etc.

x An x can be used as a placeholder for any character. Example:

12x would match 121 , 122 , 123 , "12a", etc.

[]

The square brackets [] can be used as a placeholder for a single character

which matches any of a set of characters. Example:

91[5-7]1234 would match 9151234 , 9161234 , 9171234 .

()

The parentheses ( ) can be

used to group together patterns, for instance, to

logically combine two or more patterns. Example:

91([5-7])1(x) would match 91511 , 91618 , 91715 , etc.

User Guide for the SIP-T21P IP Phone

placed in the parenthesis. The number directs to the right parenthesis when

there are more than one. Example:

A replace rule configuration: Prefix: "9([5-7]) (.)", Replace: "5$2". When you

enter "96123" to dial out on your phone, the number will be replaced as "5123"

You can configure one or more replace rules (up to 100) to remove the specified string

and replace it with another string. You can configure a pattern with wildcards (refer to

the expression syntax in the table above), so that any string that matches the pattern

will be replaced. This feature is convenient for you to dial out a long number. For

example, a replace rule is configured as Prefix: 1 and Replace: 1234567 . When

trying to dial out the number 1234567 , you just need to enter 1 on the phone and

then press the Send soft key.

To add a replace rule via web user interface:

1. Click on Settings->Dial Plan->Replace Rule.

2. Enter the string (e.g., 1) in the Prefix field.

3. Enter the string (e.g., 1234) in the Replace field.

4. Enter the desired line ID in the Account field or leave it blank.

5. Click Add to add the replace rule.

Customizing Your Phone

When you enter the number 1 using the keypad and then press the Send soft key,

the phone will dial out 1234 instead.

Note

To edit a replace rule via web user interface:

1. Click on Settings->Dial Plan->Replace Rule.

2. Select the desired replace rule by checking the check box.

3. Edit the values in the Prefix and Replace fields.

4. Enter the desired line ID in the Account field or leave it blank.

5. Click Edit to accept the change.

To delete one or more replace rules via web user interface:

1. Click on Settings->Dial Plan->Replace Rule.

2. Select one or more replace rules by checking the check box(es).

3. Click Del to delete the replace rule(s).

Note

You can configure one or more dial-now rules (up to 100) on your phone. When the

dialed out number matches the dial-now string, the number will be dialed out

automatically. For example, a dial-now rule is configured as 2xx , then any entered

three-digit string beginning with 2 will be dialed out automatically on the phone.

To add a dial-now rule via web user interface:

1. Click on Settings->Dial Plan->Dial-now.

2. Enter the desired value (e.g., 1234) in the Rule field.

3. Enter the desired line ID in the Account field or leave it blank.

The valid

values of

field can be one or two digits among

1 and 2

. Each digit must

be separated by a comma. For example, when you enter the value 1, 2 in the Account

field, this replace rule will apply to account1 and account2.

If you leave the Account field blank or enter 0, the replace rule will apply to all accounts.

Replace rule is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

For more information on the valid values of Account field, refer to Replace Rule on

page 56.

4. Click Add to add the dial-now rule.

When you enter the number 1234 using the keypad, the phone will dial out 1234

automatically without pressing any key.

Note

Delay Time for Dial-now Rule

You can configure the delay time for dial-now rules. That is, you can configure your

phone to dial out the phone number automatically, which matches a dial-now rule, after

the specified delay time.

To configure the delay time for dial-now rule via web user interface:

1. Click on Features->General Information.

You can also edit

delete the dial

now rule, refer to

Replace

Rule

on page

for more

information.

Dial-now rule is configurable via web user interface only.

Customizing Your Phone

2. Enter the time within 1-14 (in seconds) in the Time-Out for Dial-Now Rule field.

3. Click Confirm to accept the change.

Note

Area codes are also known as Numbering Plan Areas (NPAs). They usually indicate

geographical areas in a country. This feature is necessary only when dialing the number

outside the code area. For example, area code is configured as Code: 0592, Min

Length: 4, Max Length: 11 , then when you dial out the number 56789 , which has the

digits between 4 to 11, the phone will add the area code and dial out the number

059256789 . You can only configure one area code rule on your phone.

To configure the area code via web user interface:

1. Click on Settings->Dial Plan->Area Code.

2. Enter the desired values in the Code, Min Length (1-15) and Max Length (1-15)

fields.

3. Enter the desired line ID in the Account field or leave it blank.

Delay time for dial-now rule is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

For more information on the valid values of Account field, refer to Replace Rule on

page 56.

4. Click Confirm to accept the change.

Note

You can block some specific numbers from being dialed on your phone. When you dial

a block out number on your phone, the dialing will fail and the LCD screen will prompt

Forbidden Number . You can add 10 block out rules at most on your phone.

To add a block out number via web user interface:

1. Click on Settings->Dial Plan->Block Out.

2. Enter the desired value in the BlockOut Number field.

3. Enter the desired line ID in the Account field or leave it blank.

Area code is configurable via web user interface only.

Customizing Your Phone

For more information on the valid values of Account field, refer to Replace Rule on

page 56.

4. Click Confirm to add the block out number.

Note

Public telephone networks in countries around the world have a single emergency

telephone number (emergency services number), that allows a caller to contact local

emergency services for assistance when necessary. The emergency telephone number

may differ from country to country. It is typically a three-digit number so that it can be

easily remembered and dialed quickly. Some countries have different emergency

numbers for different emergency services.

You can specify the emergency telephone number on the IP phone for contacting the

emergency services in an emergency situation.

Note

To specify emergency numbers via web user interface:

1. Click on Features->Phone Lock.

2. Enter the emergency number in the Emergency field.

Contact your local phone service provider for available emergency numbers in your

area.

Block out number is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

For multiple numbers, enter a comma between every two emergency numbers. The

default emergency numbers are 110, 911 and 120.

3. Click Confirm to accept the change.

Note

You can enable live dialpad on the SIP-T21P IP phone, which enables the IP phone to

automatically dial out the phone number without pressing the send key. You can also

configure a delay, where the phone will dial out the phone number automatically after

the specified period of time.

To enable live dialpad via web user interface:

1. Click on Settings->Preference.

2. Select Enabled from the pull-down list of Live Dialpad.

Emergency number is configurable via web user interface only.

Customizing Your Phone

3. Enter the desired delay time in the Inter Digit Time (1~14s) field.

The default delay time is 4s.

4. Click Confirm to accept the change.

Note

You can dial a hotline number immediately upon lifting the handset, pressing the

Speakerphone key or pressing a line key. You can also configure a delay, where the

phone will dial out the hotline number automatically after the specified period of time.

To configure the hot line number via phone user interface:

1. Press Menu->Features->Hotline.

2. Enter the desired number in the Number field.

3. Enter the delay time (in seconds) in the Hotline Time-out field.

The valid values range from 0 to 10.

4. Press the Save soft key to accept the change or the Back soft key to cancel.

Hotline is configurable via web user interface at the path Features->General

Information.

Live dialpad is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

Basic Call Features

The SIP-T21P IP phone is designed to be easily used like a regular phone on a public

switched telephone network (PSTN). You can place calls, answer calls, transfer a call to

someone else, or conduct a conference call.

This chapter provides basic operating instructions for the SIP-T21P IP phone. Topics

include:

Placing Calls

Answering Calls

Ending Calls

Redialing Numbers

Recent Call In Dialing

Auto Answer

Auto Redial

Call Completion

Call Return

Call Mute

Call Hold/Resume

Do Not Disturb (DND)

Call Forward

Call Transfer

Call Waiting

Conference

Call Park

Call Pickup

Anonymous Call

Anonymous Call Rejection

If you require additional information or assistance with your new phone, contact your

system administrator.

You can place a call in three ways using your SIP-T21P IP phone:

Using the handset

User Guide for the SIP-T21P IP Phone

Using the speakerphone

Using the headset

You can also dial the number first, and then choose the way you want to speak to the

other party.

You can also search and dial a contact from call history, local directory or remote phone

book. For more information, refer to Contact Management on page 27 and Call History

Management on page 42.

During a call, you can alternate between Speakerphone, Headset and Handset modes

by pressing the Speakerphone key, the HEADSET key, or picking up the handset.

The call duration of active call is visible on the LCD screen. In the figure below, the call to

Kame has lasted 9 seconds.

To place a call using the handset:

1. Pick up the handset.

2. Enter the desired number using the keypad.

3. Press , , or the Send soft key.

The # key is configured as a send key by default. You can also set the * key as the send

key, or set neither. For more information, refer to Key as Send on page 21.

Note

To place a call using the hands-free speakerphone mode:

Do one of the following:

- With the handset on-hook, press or the line key to obtain a dial tone.

Enter the desired number using the keypad.

Press , , or the Send soft key.

- With the handset on-hook, enter the desired number using the keypad.

Press , , , or the Send soft key.

You can also dial using the SIP URI or IP address. To obtain the IP address of

the

phone,

press the OK key. The maximum SIP URI or IP address length is 32 characters. For

example, SIP URI: 2210@sip.com, IP: 192.168.1.15.

Your phone may not support direct IP dialing. Contact your system administrator for more

information.

Basic Call Features

To place a call using the headset:

Do one of the following:

- With the optional headset connected, press to activate the headset mode.

Press the line key to obtain a dial tone.

Enter the desired number using the keypad.

Press , , or the Send soft key.

- With the optional headset connected, press to activate the headset mode.

Enter the desired number using the keypad.

Press , , or the Send soft key.

Note

To place multiple calls:

You can have more than one call on your SIP-T21P IP phone. To place a new call during

an active call, do one of the following:

- Press the line key. The active call is placed on hold.

Enter the desired number using the keypad.

Press , , or the Send soft key.

- Press the Hold soft key to place the original call on hold.

Press the NewCall soft key.

Enter the desired number using the keypad.

Press , , or the Send soft key.

You can press or to switch between the calls, and then press the Resume soft

key to retrieve the desired call.

When you are not in another call, you can answer a call in three ways:

Using the handset

Using the speakerphone

Using the headset

Note

To permanently enable your headset, refer to

Headset Prior

on page

You can ignore incoming calls by pressing the Reject soft key or the Silence soft key. You

can also activate Do Not Disturb mode to ignore all incoming calls without ring on your

phone. For more information, refer to Do Not Disturb (DND) on page 75.

You can forward incoming calls to someone else by pressing the Fwd soft key. For more

information, refer to Call Forward on page 78.

User Guide for the SIP-T21P IP Phone

Answering When Not in Another Call

Call duration and destination will always appear on the LCD screen for the active call.

To answer a call using the handset:

1. Pick up the handset.

To answer a call using the hands-free speakerphone mode:

Do one of the following:

- Press .

- With the handset on-hook and headset mode deactivated, press the Answer soft

key.

- With the handset on-hook and headset mode deactivated, press the line key (the

line key LED flashes green).

To answer a call using the headset:

Do one of the following:

- Press .

- With the headset mode activated, press the Answer soft key.

- With the headset mode activated, press the line key (the line key LED flashes

green).

Answering When in Another Call

If you have an active call, and an incoming call arrives on the phone, do one of the

following:

- Press the Answer soft key.

The incoming call is answered and the original call is placed on hold.

- Press to access the new call.

Press or the Answer soft key.

The incoming call is answered and the original call is placed on hold.

To end a call:

Do one of the following:

- If you are using the handset, press the Cancel soft key or hang up the handset.

- If you are using the headset, press the Cancel soft key.

Basic Call Features

- If you are using the speakerphone, press or the Cancel soft key.

Note

To redial the last dialed number from your phone:

1. Press twice.

A call to your last dialed number is attempted.

To redial a previously dialed number from your phone:

1. Press when the phone is idle.

2. Press or to select the desired entry, and then press or the Send soft

key.

You can view the placed calls list when the phone is in the pre-dialing screen. To do this,

you should enable recent call in dialing in advance.

To enable recent call in dialing via web user interface:

1. Click on Directory->Setting.

2. Select Enabled from the pull-down list of Recent Call In Dialing.

To end a call placed on hold,

you can press the

soft key

to end the call

directly,

press the Resume soft key to resume the call before ending it.

User Guide for the SIP-T21P IP Phone

3. Click Confirm to accept the change.

Note

To view placed calls list when the phone is in the pre-dialing screen:

1. Pick up the handset, press the speakerphone or press the line key.

The LCD screen displays the placed calls list. You can press or to select

the desired entry and then place a call to the contact.

You can use auto answer to automatically answer an incoming call on a line. Auto

answer is configurable on a per-line basis.

To configure auto answer via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin) ->Accounts.

2. Select the desired account and then press the Enter soft key.

3. Press or , or the Switch soft key to select Enable from the Auto Answer

field.

4. Press the Save soft key to accept the change or the Back soft key to cancel.

The icon appears on the LCD screen.

Recent call in dialing is configurable via web user interface only.

Basic Call Features

Auto answer is configurable via web user interface at the path Account->Basic.

Note

You can enable auto redial to redial the phone number automatically when the called

party is busy. You can also configure the times settings for auto redial and the time to

wait between redial attempts.

To configure auto redial via phone user interface:

1. Press Menu->Features->Auto Redial.

2. Press or , or the Switch soft key to select Enable from the Auto Redial field.

3. Enter the desired time in the Interval field.

The default time interval is 10s.

4. Enter the desired times in the Times field.

The default times are 10.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Auto redial is configurable via web user interface at the path Features->General

Information.

To use auto redial:

When the called party is busy, the following prompt will appear on the LCD screen of the

phone:

Auto answer is only applicable when there is no other call in progress on the phone.

User Guide for the SIP-T21P IP Phone

1. Press the Ok soft key to activate auto redial.

The following prompt will appear on the LCD screen of the phone:

2. Wait for a period of time or press the Ok soft key to redial the phone number.

The phone will retry as many times as configured until the called party is idle.

You can use call completion to notify the caller who failed to reach a desired callee

when the callee becomes available to receive a call.

To configure call completion via phone user interface:

1. Press Menu->Features->Call Completion.

2. Press or , or the Switch soft key to select Enable from the Call Completion

field.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

Call completion is configurable via web user interface at the path Features->General

Information.

To use call completion:

When the called party is busy, the following prompt will appear on the LCD screen of the

phone:

Basic Call Features

1. Press the Ok soft key, the phone returns to the idle screen and call completion is

activated.

When the called party becomes idle, the following prompt appears on the LCD

screen of the phone:

2. Press the Ok soft key to redial the number.

Note

You can press a call return key to place a call back to the last incoming call.

To configure a call return key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select a desired DSS key.

3. Press or , or the Switch soft key to select Key Event from the Type field.

4. Press or , or the Switch soft key to select Call Return from the Key Type field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Call return key is configurable via web user interface at the path DSSKey->Line Key.

You can mute the microphone of the active audio device during an active call, and then

the other party cannot hear you.

To mute a call:

1. Press during an active call.

Call completion

is not available on all servers. For more information, contact your system

administrator.

User Guide for the SIP-T21P IP Phone

The LCD screen indicates that the call is on mute.

To un-mute a call:

1. Press again to un-mute the call.

You can place an active call on hold. Only one active call can be in progress at any time.

Other calls can be made and received while placing the original call on hold. When you

place a call on hold, your IP PBX may play music on hold to the other party while

waiting.

To place a call on hold:

1. Press the Hold soft key during a call.

The line key LED flashes green. The LCD screen indicates that the call is on hold.

Note

To resume a held call:

1. Press the Resume soft key.

Multiple Calls on Hold:

If multiple calls are placed on hold, do one of the following:

- Press or to switch between the calls, and then press the Resume soft key

to retrieve the desired call.

- Press the corresponding line key to retrieve the desired call.

If more than one call is placed on hold, a numbered prompt appears on the LCD screen,

The phone will beep softly

every

30 seconds to remind you that you still have a call on

hold.

Basic Call Features

for example 3 three calls.

You can use DND to reject incoming calls automatically on the phone. Callers will

receive a busy message.

You can enable/disable DND for the phone system, or you can customize DND for each

or all accounts. Two DND modes:

Phone (default): DND is effective for the phone system.

Custom: DND can be configured for each or all accounts.

You can receive incoming calls from authorized numbers when DND is enabled.

To configure the DND mode via web user interface:

1. Click on Features->Forward & DND.

2. In the DND block, mark the desired radio box in the Mode field.

3. Click Confirm to accept the change.

Note

DND mode is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

To activate DND in phone mode:

1. Press the DND soft key when the phone is idle.

The icon on the idle screen indicates that DND is enabled.

Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n"

indicates the number of the missed calls) will appear on the LCD screen.

To activate DND in custom mode for a specific account:

1. Press the DND soft key when the phone is idle.

The LCD screen displays a list of accounts on the phone.

2. Press or to select the desired account.

3. Press or soft key to select On to active DND.

4. Press the Save soft key to accept the change.

The icon appears on the idle screen and the associated line icon changes

to .

Incoming calls on this line will be rejected automatically and "n New Missed Call(s)"

("n" indicates the number of the missed calls) will appear on the LCD screen.

To activate DND in custom mode for all accounts:

1. Press the DND soft key when the phone is idle.

Basic Call Features

The LCD screen displays a list of the accounts on the phone.

2. Press the All On soft key to activate DND for all accounts.

3. Press the Save soft key to accept the change.

The icon appears on the idle screen and all line icons change to .

Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n"

indicates the number of the missed calls) will appear on the LCD screen.

Note

To configure the DND authorized numbers via web user interface:

1. Click on Features->Forward & DND.

2. Select Enabled from the pull-down list of DND Emergency.

The prompt message displays only if Missed Call Log for the line is enabled. Missed Call

Log is configurable via web user interface at the path Account->Basic.

Do Not Disturb is local to the phone, and may be overridden by the server settings. For

more information, contact your system administrator.

User Guide for the SIP-T21P IP Phone

3. Enter the numbers in the DND Authorized Numbers field.

For multiple numbers, enter a comma between every two numbers.

4. Click Confirm to accept the change.

When DND is enabled on the phone, the phone can still receive incoming calls from

the numbers specified in the DND Authorized Numbers field.

Note

You can configure your phone to forward incoming calls to another party by the static

forwarding. You can also forward calls while your phone is ringing, refer to the dynamic

forwarding.

Static Forwarding

Three types of static forwarding:

Always Forward: Incoming calls are immediately forwarded.

Busy Forward: Incoming calls are immediately forwarded if the phone is busy.

No Answer Forward: Incoming calls are forwarded if not answered after a period

DND authorized number is configurable via web user interface only.

Basic Call Features

of time.

You can enable/disable call forward for the phone system, or you can customize call

forward for each or all accounts. Two call forward modes:

Phone (default): Call forward is effective for the phone system.

Custom: Call forward can be configured for each or all accounts.

To configure the call forward mode via web user interface:

1. Click on Features->Forward & DND.

2. In the Forward block, mark the desired radio box in the Mode field.

3. Click Confirm to accept the change.

Note

To enable call forward in phone mode:

1. Press Menu->Features->Call Forward.

2. Press or to select the desired forwarding type, and then press the Enter

soft key.

Call forward mode is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

3. Depending on your selection:

a.) If you select Always Forward:

1) Press or , or the Switch soft key to select Enable from the Always

field.

2) Enter the destination number you want to forward all incoming calls to in

the Forward to field.

3) (Optional.) Enter the always forward on code or off code respectively in the

On Code or Off Code field.

b.) If you select Busy Forward:

1) Press or , or the Switch soft key to select Enable from the Busy

field.

2) Enter the destination number you want to forward all incoming calls to

when the phone is busy in the Forward to field.

3) (Optional.) Enter the busy forward on code or off code respectively in the

On Code or Off Code field.

c.) If you select No Answer Forward:

1) Press or , or the Switch soft key to select Enable from the No

Answer field.

2) Enter the destination number you want to forward all unanswered incoming

calls to in the Forward to field.

3) Press or , or the Switch soft key to select the ring time to wait

Basic Call Features

before forwarding from the After Ring Time field.

The default ring time is 12 seconds.

4) (Optional.) Enter the no answer forward on code or off code respectively in

the On Code or Off Code field.

4. Press the Save soft key to accept the change or the Back soft key to cancel.

The icon on the idle screen indicates call forward is enabled.

To enable call forward in custom mode:

1. Press Menu->Features->Call Forward.

2. Press or to select the desired account, and then press the Enter soft key.

3. Press or to select the desired forwarding type, and then press the Enter

soft key.

4. Depending on your selection:

a.) If you select Always Forward, you can enable it for a specific account.

1) Press or , or the Switch soft key to select Enable from the Always

field.

2) Enter the destination number you want to forward all incoming calls to in

the Forward to field.

3) (Optional.) Enter the always forward on code or off code respectively in the

On Code or Off Code field.

You can also enable always forward for all accounts. After always forward was

enabled for a specific account, do the following:

1) Press or to scroll to the Always field.

2) Press the All Lines soft key.

The LCD screen prompts Copy to All Lines? .

3) Press the Ok soft key to accept the change or the Cancel soft key to cancel.

User Guide for the SIP-T21P IP Phone

b.) If you select Busy Forward, you can enable it for a specific account.

1) Press or , or the Switch soft key to select Enable from the Busy

field.

2) Enter the destination number you want to forward all incoming calls to

when the phone is busy in the Forward to field.

3) (Optional.) Enter the busy forward on code or off code respectively in the

On Code or Off Code field.

You can also enable busy forward for all accounts. After busy forward was

enabled for a specific account, do the following:

1) Press or to scroll to the Busy field.

2) Press the All Lines soft key.

The LCD screen prompts Copy to All Lines? .

3) Press the Ok soft key to accept the change or the Cancel soft key to cancel.

c.) If you select No Answer Forward, you can enable it for a specific account.

1) Press or , or the Switch soft key to select Enable from the No

Answer field.

2) Enter the destination number you want to forward all unanswered incoming

calls to in the Forward to field.

3) Press or , or the Switch soft key to select the ring time to wait

before forwarding from the After Ring Time field.

The default ring time is 12 seconds.

Basic Call Features

4) (Optional.) Enter the no answer forward on code or off code respectively in

the On Code or Off Code field.

You can also enable no answer forward for all accounts. After no answer

forward was enabled for a specific account, do the following:

1) Press or to scroll to the No Answer field.

2) Press the All Lines soft key.

The LCD screen prompts Copy to All Lines? .

3) Press the Ok soft key to accept the change or the Cancel soft key to cancel.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

The icon appears on the idle screen and the associate line icon changes to .

Call forward is configurable via web user interface at the path Features->Forward &

DND.

Note

To disable call forward in phone mode:

Do one of the following:

- Press when the phone is idle.

- Press Menu->Features->Call Forward.

Press or to select the desired forwarding type, then press the Enter soft

key.

Press , , or the Switch soft key to select Disable to disable the call forward.

You can also enter the SIP URL or IP address

in the

field

. For more information

on using the SIP URL or IP address, refer to Placing Calls on page 65.

Call forward is local to the phone, and may be overridden by the server settings. Call

forward on code or off code may be different between servers. For more information,

contact your system administrator.

User Guide for the SIP-T21P IP Phone

Press the Save soft key to accept the change.

To disable call forward in custom mode for a specific account:

1. Press Menu->Features->Call Forward or press when the phone is idle.

2. Press or to select the desired account, then press the Enter soft key.

3. Press or to select the desired forwarding type, then press the Enter soft

key.

4. Press , or the Switch soft key to select Disable to disable the call forward.

5. Press the Save soft key to accept the change.

Dynamic Forwarding

To forward an incoming call to another party:

1. When the phone is ringing, press the Fwd soft key.

2. Enter the number you want to forward the incoming call to.

3. Press , , or the Send soft key.

The incoming call is forwarded. The LCD screen prompts a call forward message.

You can transfer a call to another party in one of the three ways:

Blind Transfer: Transfer a call directly to another party without consulting.

Semi-Attended Transfer: Transfer a call when the target phone is ringing.

Attended Transfer: Transfer a call with prior consulting.

To perform a blind transfer:

1. Press or the Tran soft key during a call.

2. Enter the number you want to transfer the call to.

Basic Call Features

3. Press or the Tran soft key to complete call transfer.

Then the call is connected to the number to which you are transferring.

To perform a semi-attended transfer:

1. Press or the Tran soft key during a call.

2. Do one of the following:

- Enter the number you want to transfer the call to.

- Press the Dir soft key, and then select Local Directory. Select the desired group,

and search for the contact (Directory should be configured in advance. Refer to

Directory on page 27 for more information.).

- Press the Dir soft key, and then select History. Select the desired list and use

or to select the entry (Directory should be configured in advance. Refer to

Directory on page 27 for more information.).

- Press the Dir soft key, and then select Remote Phone Book. Select the desired

group and search for the contact (Directory and remote phone book should be

configured in advance. Refer to Directory on page 27 and Remote Phone Book

on page 40 for more information.).

3. Press or to dial out.

4. Press or the Tran soft key to complete call transfer when receiving the

ringback.

To perform an attended transfer:

1. Press or the Tran soft key during a call.

2. Do one of the following:

- Enter the number you want to transfer the call to.

- Press the Dir soft key, and then select Local Directory. Select the desired group,

and search for the contact (Directory should be configured in advance. Refer to

Directory on page 27 for more information.).

- Press the Dir soft key, and then select History. Select the desired list and use

or to select the entry (Directory should be configured in advance. Refer to

Directory on page 27 for more information.).

- Press the Dir soft key, and then select Remote Phone Book. Select the desired

group and search for the contact (Directory and remote phone book should be

configured in advance. Refer to Directory on page 27 and Remote Phone Book

on page 40 for more information.).

3. Press or to dial out.

4. After the party answers the call, press or the Tran soft key to complete call

transfer.

User Guide for the SIP-T21P IP Phone

If you are using a handset, call transfer can be completed by hanging up the handset.

You can cancel call transfer before the call is connected by pressing the Cancel soft key.

You can enable or disable call waiting on the phone. If call waiting is enabled, you can

receive another call when there is an active call on the phone. Otherwise, another

incoming call is automatically rejected by the phone with a busy message when there is

an active call on the phone. You can also enable or disable the phone to play a warning

tone when receiving another call.

To configure call waiting via phone user interface:

1. Press Menu->Features->Call Waiting.

2. Press or , or the Switch soft key to select Enable from the Call Waiting

field.

3. Press or , or the Switch soft key to select Enable from the Play Tone field.

4. (Optional.)Enter the call waiting on code or off code respectively in the CW On

Code or CW Off Code field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Call waiting is configurable via web user interface at the path Features->General

Information.

can create a conference between an active call and a call on hold (on the same or

another line) by pressing the Conference soft key.

Note

etwork conference is not available on all servers. For more information, contact your

system administrator.

Basic Call Features

The SIP-T21P IP phone supports up to 3 parties (including yourself) in a conference call.

This is the default method of conference called Local Conference.

To set up a local conference call:

1. Place a call to the first party.

2. When the first party answers the call, press the Conference soft key to place a new

call.

The active call is placed on hold.

3. Enter the number of the second party and press , , or the Send soft key.

4. When the second party answers the call, you can consult with him or her before

adding to the conference.

5. Press the Conference soft key again to join all parties in the conference.

To join two calls in a conference:

1. Place two calls using two different accounts on the phone (for example, place the

first call using account 1, and then place the second call using account 2).

2. Press or to select the call for conference and make sure the call is active

(for example, select the call on account 1).

3. Press the Conference soft key to join the two calls in the conference on the selected

account.

You can press the Hold soft key to place the conference on hold. You can press the Split

soft key to split the conference call into two individual calls. To drop the conference call,

press the Cancel soft key.

You can use network conference on the SIP-T21P IP phone to conduct a conference with

multiple participants.

This feature allows you to perform the following:

Join two calls together into a conference call.

Invite another party into an active conference call.

User Guide for the SIP-T21P IP Phone

To use this feature, contact your system administrator for the network conference URI in

advance.

To configure network conference via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Advanced.

4. Select Network Conference from the pull-down list of Conference Type.

5. Enter the conference URI (e.g., conference@example.com) in the Conference URI

field.

6. Click Confirm to accept the change.

To set up a network conference call:

1. Place a call to the first party.

2. Press the Conference soft key to place a new call.

The active call is placed on hold.

3. Enter the number of the second party and press , , or the Send soft key.

4. When the second party answers the call, press the Conference soft key to add the

second party to the conference.

5. Press the Conference soft key to place a new call.

The conference is placed on hold.

6. Enter the number of the new party and then press , , or the Send soft key.

Basic Call Features

7. When the new party answers the call, press the

8. Conference soft key to add the new party to the conference.

9. Repeat steps 5 to 7 until you have added all intended parties.

The procedures to set up a network conference call for specific servers may be different

from introduced above. Contact your system administrator for more information.

You can use call park to place a call on hold, and then retrieve the call from another

phone in the system (for example, a phone in another office or conference room). You

can park an active call by pressing the call park key on the phone. If the call is parked

successfully, the response is either a voice prompt confirming that the call was parked,

or a visible prompt on the LCD screen.

Note

To configure a call park key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select Key Event from the Type field.

4. Press or , or the Switch soft key to select Call Park from the Key Type field.

5. Press or , or the Switch soft key to select the desired line from the Account

ID field.

6. Enter the call park code in the Value field.

7. Press the Save soft key to accept the change or the Back soft key to cancel.

Call park key is configurable via web user interface at the path DSSKey->Line Key.

To use call park:

1. User on phone A places a call to phone B.

2. User on phone A wants to take the call in a conference room for privacy, then

presses the call park key on phone A.

3. User on phone A walks to an available conference room where the phone is

all

ark is not available on all servers. Contact your system administrator for more

information.

User Guide for the SIP-T21P IP Phone

designated as phone C. The user dials the call park retrieve code to retrieve the

parked call.

The system establishes call between phone C and B.

Note

You can use call pickup to answer on the phone. The

SIP-T21P IP phone supports directed call pickup and group call pickup. Directed call

pickup is used for picking up a call that is ringing at a specific phone number. Group call

pickup is used for picking up a call that is ringing at any phone number in the group. The

pickup group should be predefined, contact your system administrator for more

information.

You can pick up an incoming call by using the DPickup/GPickup soft key. To use call

pickup, you need to configure the call pickup code beforehand on a global or per-line

basis via web user interface.

Note

Directed Call Pickup

To enable the directed call pickup via web user interface:

1. Click on Features->Call Pickup.

2. Select Enabled from the pull-down list of Directed Call Pickup.

The

call park code and

call park

retrieve code

are

predefine

the system

server

Contact your system administrator for more information.

If the parked call is not retrieved within a period of time assigned by the system, the

phone performing call park feature will receive call back.

If there are many incoming calls at the same time,

press

ing

the

soft

key on the

phone will pick up the call that rings first.

Basic Call Features

3. Click Confirm to accept the change.

To configure the directed call pickup code on a global basis via web user interface:

1. Click on Features->Call Pickup.

2. Enter the directed call pickup code in the Directed Call Pickup Code field.

3. Click Confirm to accept the change.

To configure the directed call pickup code on a per-line basis via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Advanced.

User Guide for the SIP-T21P IP Phone

4. Enter the directed call pickup code in the Directed Call Pickup Code field.

5. Click Confirm to accept the change.

To pick up a call directly:

1. Pick up the handset.

The DPickup soft key appears on the LCD screen.

2. Press the DPickup soft key on your phone when a phone receives an incoming call.

3. Enter the phone number which receives an incoming call.

4. Press the DPickup soft key again.

The call is answered on your phone.

You can also configure a DSS key as directed pickup key via phone user interface or

web user interface.You can pick up acall by pressing the directedpickup key directly.

Basic Call Features

Group Call Pickup

To enable the group call pickup via web user interface:

1. Click on Features->Call Pickup.

2. Select Enabled from the pull-down list of Group Call Pickup.

3. Click Confirm to accept the change.

To configure the group call pickup code on a global basis via web user interface:

1. Click on Features->Call Pickup.

2. Enter the group call pickup code in the Group Call Pickup Code field.

3. Click Confirm to accept the change.

To configure the group call pickup code on a per-line basis via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Advanced.

User Guide for the SIP-T21P IP Phone

4. Enter the group call pickup code in the Group Call Pickup Code field.

5. Click Confirm to accept the change.

To pick up a call in the group:

1. Pick up the handset.

The GPickup soft key appears on the LCD screen.

2. Press the GPickup soft key on your phone when a phone in the group receives an

incoming call.

The call is answered on your phone.

You can also configure a DSS key as a group pickup key via phone user interface or

web user interface. You can pick up a call by pressing the group pickup key directly.

Note

directed call pickup

code and

group call pickup code

are

predefine

the system

server. Contact your system administrator for more information.

The call pickup code configured on a per-line basis takes precedence over that

configured on a global basis.

Basic Call Features

You can use anonymous call to block the identity and phone number from showing up to

the called party when you call someone. For example, you want to call to consult some

of the services, but don t want to be harassed. Anonymous call is configurable on a

per-line basis.

Note

To configure anonymous call via phone user interface:

1. Press Menu->Features->Anonymous Call.

2. Press or , or the Switch soft key to select the desired line from the Line ID

field.

3. Press or to select Enable from the Anonymous Call field.

4. (Optional.) Enter the anonymous call on code in the Call On Code field.

5. (Optional.) Enter the anonymous call off code in the Call Off Code field.

6. Press the Save soft key to accept the change or the Back soft key to cancel.

Anonymous call is configurable via web user interface at the path Account->Basic.

To place an anonymous call:

1. Using the specific line on the phone to place a call to phone B.

The LCD screen of phone B prompts an incoming call from anonymity.

nonymous call is not available on all servers

Contact your system administrator for the

anonymous call on code and off code.

User Guide for the SIP-T21P IP Phone

You can use anonymous call rejection to reject incoming calls from anonymous callers.

Anonymous call rejection automatically rejects incoming calls from callers who

deliberately block their identities and numbers from showing up. Anonymous call

rejection is configurable on a per-line basis.

To configure anonymous call rejection via phone user interface:

1. Press Menu->Features->Anonymous Call.

2. Press or , or the Switch soft key to select the desired line from the Line ID

field.

3. Press or to scroll to the Rejection field.

4. Press or , or the Switch soft key to select Enable from the Rejection field.

5. (Optional.) Enter the anonymous call rejection on code in the Reject On Code field.

6. (Optional.) Enter the anonymous call rejection off code in the Reject Off Code field.

7. Press the Save soft key to accept the change or the Back soft key to cancel.

Anonymous call rejection is configurable via web user interface at the path

Account->Basic.

Advanced Phone Features

This chapter provides operating instructions for the advanced features of the SIP-T21P IP

phone. Topics include:

Busy Lamp Field (BLF)

Call Recording

Hot Desking

Intercom

Multicast Paging

Music on Hold

Automatic Call Distribution (ACD)

Messages

If you require additional information or assistance with your new phone, contact your

system administrator.

You can use BLF to monitor a specific line for status changes on the phone. For example,

(busy or idle). The BLF key LED illuminates solid green when the friend's line is in use. For

more information on BLF key LED indications, refer to LED Instructions on page 4.

You can press a BLF key to dial out the monitored phone number when the monitored

line is idle. You can receive a visual and an audio alert (if enabled), and also pick up the

call when the monitored line receives an incoming call. For more information, contact

your system administrator.

To configure a BLF key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select BLF from the Type field.

User Guide for the SIP-T21P IP Phone

4. Press or , or the Switch soft key to select the desired line from the Account

ID field.

5. Enter the phone number or extension you want to monitor in the Value field.

6. (Optional.) Enter the pickup code in the Extension field.

7. Press the Save soft key to accept the change or the Back soft key to cancel.

BLF key is configurable via web user interface at the path DSSKey->Line Key.

You can enable audio alert for BLF pickup feature on the phone. This allows the

monitoring phone to play a warning tone when the monitored line receives an incoming

call. You can also enable visual alert for BLF pickup feature on the phone. This allows the

LCD screen of the monitoring phone to display the caller ID when the monitored line

receives an incoming call.

To enable visual and audio alert features via web user interface:

1. Click on Features->Call Pickup.

2. Select Enabled from the pull-down list of Visual Alert for BLF Pickup.

3. Select Enabled from the pull-down list of Audio Alert for BLF Pickup.

4. Click Confirm to accept the change.

Note

When the monitored line receives an incoming call, the followings occur on the phone:

The phone plays a warning tone (if enabled).

The BLF key LED flashes green.

The caller ID appears on the LCD screen (if enabled).

isual and audio alert

features

are

configurable via web user interface only.

Advanced Phone Features

In the following figure, the LCD screen shows an incoming call from 2020 on the

monitored line.

Note

When there is an active call on the IP phone, you can transfer the active call to the

monitored phone number directly by pressing the BLF key. The phone transfers the

active call differently depending on the transfer mode on DSS key. For more information

on the transfer mode on DSS key, refer to transfer in the DSS Keys section on page 46.

You can record calls by pressing a record key on the phone. The SIP-T21P IP phone

supports record and URL record.

Two ways of call recording:

Record: The phone sends SIP INFO message containing a specific header Record:

on/off to trigger a recording.

URL Record: The phone sends HTTP URL request to trigger a recording. Contact

your system administrator for the predefined URL.

Note

To configure a record key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select Key Event from the Type field.

Call

ecord

is not

available

on all servers. C

ontact your system administrator

for more

information.

If your phone is locked and the type of the keypad lock is

configured as

All Keys, you cannot use the Pickup, DIAL, NewCall and Cancel soft keys until unlocked.

User Guide for the SIP-T21P IP Phone

100

4. Press or , or the Switch soft key to select Record from the Key Type field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

To configure a URL record key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select URL Record from the Type field.

4. Enter the URL (e.g., http://10.1.2.224/phonerecording.cgi) in the Value field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Record and URL record keys are configurable via web user interface at the path

DSSKey->Line Key.

The record and URL record keys control the recording, and are available:

During an active call

When calls are on hold or mute

During a blind or attended transfer

During a conference call

When the phone prompts you to answer an incoming call

The record and URL record keys are not available when:

There are no connected calls on your phone

You place a new call

To record a call:

1. Press a record or a URL record key during a call.

If the recording starts successfully, the recording icon will appear on the LCD screen

and the record or URL record key LED will flash green.

Advanced Phone Features

101

2. Press the record or URL record key again to stop recording.

The recording icon disappears from the LCD screen and the record or URL record

key LED goes out.

Recording status indications you need to know:

Circumstance Icons on the LCD screen

A recording is started appears on the LCD screen

A recording cannot be started appears for 1 second

A recording cannot be stopped appears for 1 second, then goes back

The recording box is full appears for 1 second

The call cannot be recorded appears for 1 second

You can listen to the recordings stored on your server system. For example, you can dial

an access code to listen to the recordings.

Note

Hot desking originates from the definition of being the temporary physical occupant of

a work station or surface by a particular employee. A primary motivation for hot

desking is cost reduction. This feature is regularly used in places where not all the

employees are in the office at the same time, or not in the office for very long at all,

which means actual personal offices would be often vacant, consuming valuable space

and resources.

You can use hot desking on the SIP-T21P IP phone to log out of the existing accounts and

then log into a new account, that is, many users can share the phone resource in

different time. To use this feature, you need to configure a hot desking key in advance.

Note

To configure a hot desking key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select Key Event from the Type field.

The way

in which you listen

to the recordings

may be different on different servers.

Contact your system administrator for more information.

ot desking

is not

available on all

ervers

ontact your system administrator

for more

information.

User Guide for the SIP-T21P IP Phone

102

4. Press or , or the Switch soft key to select Hot Desking from the Key Type

field.

5. Press the Save soft key to accept the change or the Back soft key to cancel.

Hot desking key is configurable via web user interface at the path DSSKey->Line Key.

To use hot desking:

1. Press the hot desking key when the phone is idle.

The LCD screen prompts Clear all account config? .

2. Press the Ok soft key, registration configurations (e.g., display name, register name,

user name and password) of all accounts will be cleared immediately.

The login wizard will be shown as below:

3. Enter the desired values in the User Name and Password respectively. Contact your

system administrator for more information.

4. Press the Save soft key to login or Cancel soft key to cancel.

Advanced Phone Features

103

Intercom is a useful feature in an office environment to quickly connect with the operator

or the secretary. You can press the intercom key to automatically connect with a remote

extension for outgoing intercom calls, and the remote extension will automatically

answer the incoming intercom calls.

Note

To configure an intercom key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select Intercom from the Type field.

4. Select the desired line from the Account ID field.

5. Enter the remote extension number in the Value field.

6. Press the Save soft key to accept the change or the Back soft key to cancel.

Intercom key is configurable via web user interface at the path DSSKey->Line key.

To place an intercom call:

1. Press the intercom key when the phone is idle.

The phone is automatically connected to the extension specified in the Value field.

2. Press the intercom key again or the Cancel soft key to end the intercom call.

The SIP-T21P IP phone supports automatically to answer an incoming intercom call by

default. The phone automatically plays a warning tone when it receives an incoming

intercom call. In addition, you can enable the phone to mute the microphone when it

automatically answers an incoming intercom call. You can also enable the phone to

ntercom is

not

available

all

servers

Contact your system administrator for more

information.

User Guide for the SIP-T21P IP Phone

104

automatically answer an incoming intercom call while there is already an active call on

the phone, the active call is placed on hold.

Intercom features you need to know:

Intercom Feature Description

Accept Intercom Enable or disable the IP phone to automatically

answer an incoming intercom call.

Intercom Mute E

nable or disable the microphone on the IP phone for

intercom calls.

Warning Tone Enable or disable the IP phone to play a warning

tone when it receives an incoming intercom call.

Intercom Barge

Enable or disable the IP phone to automatically

answer an incoming intercom call while there is

already an active call on the phone.

To configure intercom features via phone user interface:

1. Press Menu->Features->Intercom.

2. Make the desired changes (Press or to switch between different intercom

features).

3. Press the Save soft key to accept the change or the Back soft key to cancel.

These specific parameters are configurable via web user interface at the path

Features->Intercom.

Accept Intercom

You can enable or disable the phone to automatically answer an incoming intercom call.

If Accept Intercom is enabled, the phone automatically answers an incoming intercom

call. If Accept Intercom is disabled, the phone rejects incoming intercom calls and sends

a busy message to the caller. Accept Intercom is enabled by default.

Note

Intercom Mute

You can mute or un-mute the microphone on the phone for intercom calls automatically.

If Intercom Mute is enabled, the microphone is muted for intercom calls. If Intercom

Your

dministrator can set

delay

time

before the phone automatically answers

intercom calls. Contact your system administrator for more information.

Advanced Phone Features

105

Mute is disabled, the microphone works for intercom calls. Intercom Mute is disabled by

default.

Warning Tone

You can enable or disable the phone to play a warning tone when receiving an

intercom call. If Warning Tone is enabled, the phone plays a warning tone before

answering the intercom call. If Warning Tone is disabled, the phone automatically

answers the intercom call without warning. Warning Tone is enabled by default.

Intercom Barge

You can enable or disable the phone to automatically answer an incoming intercom call

while there is already an active call on the phone. If Intercom Barge is enabled, the

phone automatically answers the intercom call and places the active call on hold. If

Intercom Barge is disabled, the phone handles an incoming intercom call like a waiting

call. Intercom Barge is disabled by default.

You can use multicast paging to quickly and easily forward time sensitive

announcements out to people within the multicast group. You can configure a multicast

paging key on the phone, which allows you to send a Real Time Transport Protocol (RTP)

stream to the pre-configured multicast address(es) without involving SIP signaling. You

can configure the phone to receive an RTP stream from pre-configured multicast

listening address(es) without involving SIP signaling. You can specify up to 10 multicast

listening addresses.

To configure a multicast paging key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select Key Event from the Type field.

4. Press or , or the Switch soft key to select Multicast Paging from the Key

Type field.

5. Enter the multicast IP address and port (e.g., 224.5.6.20:10008) in the Value field.

User Guide for the SIP-T21P IP Phone

106

The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.

6. Press the Save soft key to accept the change or the Back soft key to cancel.

Multicast paging key is configurable via web user interface at the path DSSKey->Line

Key.

You can also configure the phone to use a default codec for sending multicast RTP

stream via web interface.

To configure a default codec for multicast paging via web user interface:

1. Click on Features->General Information.

2. Select the desired codec from the pull-down list of Multicast Codec.

The default codec is G722.

3. Click Confirm to accept the change.

Note

To send RTP stream:

1. Press the multicast paging key when the phone is idle.

The phone sends RTP to a preconfigured multicast address (IP: Port). Any phone in

the local network then listens to the RTP on the preconfigured multicast address (IP:

Port). For both sending and receiving of the multicast RTP, there is no SIP signaling

If G722 codec is used for multicast paging, the LCD screen prompts "HD" to indicate that

the phone is providing high definition voice.

Default codec for multicast paging is configurable via web user interface only.

Advanced Phone Features

107

involved.

The multicast paging key LED illuminates solid green.

The following figure shows a multicast RTP session on the phone:

2. Press the Hold soft key to place the current multicast RTP session on hold.

3. Press the Cancel soft key to cancel the multicast RTP session.

Note

You can configure the phone to receive a Real Time Transport Protocol (RTP) stream from

the pre-configured multicast address(es) without involving SIP signaling. You can

specify up to 10 multicast addresses that the phone listens to on the network.

How the phone handles incoming multicast paging calls depends on Paging Barge and

Paging Priority Active parameters configured via web user interface.

Paging Barge

Paging barge parameter defines the priority of the voice call in progress. If the priority

of an incoming multicast paging call is lower than that of the active call, it will be

ignored automatically. If Disabled is selected from the pull-down list of Paging Barge,

the voice call in progress takes precedence over all incoming multicast paging calls.

Valid values in the Paging Barge field:

1 to 10: Define the priority of an active call, 1 with the highest priority, 10 with the

lowest.

Disabled: The voice call in progress shall take precedence over all incoming

paging calls.

Paging Priority Active

Paging priority active parameter decides how the phone handles the incoming

multicast paging calls when there is already a multicast paging call on the phone. If

enabled, the phone will ignore incoming multicast paging calls with lower priorities,

otherwise, the phone will answer incoming multicast paging calls automatically and

place the previous multicast paging call on hold. If disabled, the phone will

automatically ignore all incoming multicast paging calls.

Multicast RTP is one way only

from sender to the multicast address(es) (receiver). For

outgoing RTP multicasts, all other existing calls on the phone will be placed on hold.

User Guide for the SIP-T21P IP Phone

108

To configure multicast listening addresses via web user interface:

1. Click on Directory->MulticastIP.

2. Select the desired value from the pull-down list of Paging Barge.

3. Select the desired value from the pull-down list of Paging Priority Active.

4. Enter the multicast IP address(es) and port number (e.g., 224.5.6.20:10008) which

the phone listens for incoming RTP multicast in the Listening Address field.

The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.

5. Enter the label in the Label field.

Label will appear on the LCD screen when receiving the RTP multicast.

6. Click Confirm to accept the change.

Note

Music on hold (MoH) is the business practice of playing recorded music to fill the silence

that would be heard by the party placed on hold. To use this feature, you should specify

a SIP URI pointing to a MoH server account. When a call is placed on hold, the phone

will send a SIP INVITE message to the MoH server account. The MoH server account

automatically answers to the SIP INVITE messages and immediately plays audio from

some source located anywhere (LAN, Internet) to the held party. Contact your system

administrator for the SIP URI.

The priorities of listening addresses are predefined: 1

with

the highest priority, 10 with the

lowest.

Both the multicast paging sender and the receiver play a warning tone when pressing

the multicast paging key.

Multicast listening addresses is configurable via web user interface only.

Advanced Phone Features

109

To configure MoH server via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Advanced.

4. Enter the SIP URI (e.g., sip:moh@sip.com) in the Music Server URI field.

5. Click Confirm to accept the change.

When you have placed a call on hold, the held party can hear the music.

Note

ACD is often used in offices for customer service, such as call center. The ACD system

handles large volumes of incoming calls from callers who have no need to talk to a

specific person but who require assistance from any of multiple persons at the earliest

opportunity. ACD on the SIP-T21P IP phone allows the ACD system to distribute large

volumes of incoming calls to the registered ACD users. To use this feature, you should

configure an ACD key in advance.

Note

All

involved

parties cannot use encrypted RTP

(SRTP)

MoH server is configurable via web user interface only.

Make sure ACD is

enabled

on your IP phone.

or more information

on enabling ACD

contact your system administrator.

User Guide for the SIP-T21P IP Phone

110

To configure an ACD key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select ACD from the Type field.

4. Press the Save soft key to accept the change or the Back soft key to cancel.

ACD key is configurable via web user interface at the path DSSKey->Line Key.

To log into the ACD system:

1. Press the ACD key when the phone is idle.

The LCD screen prompts you the following information:

User ID: the identity used to log into the queue.

Password: the password used to log into the queue.

2. Press the Login soft key to login.

Note

After configuring an ACD key, you can press the ACD key to log into the ACD system.

After logging in, you are ready to receive calls from the ACD system. You can press the

ACD key to show your current ACD user status. You can press the Available/Unavailable

soft key to change your ACD user status. ACD user status synchronizes on both IP phone

and ACD system. When you set the ACD user status to be available, the ACD key LED

illuminates solid green, and then the server begins distributing calls to your phone.

When you set the phone to be unavailable, the ACD key LED flashes green, and then the

server temporarily stops distributing calls to your phone. To log out of the ACD system,

press the Logout soft key.

Note

It is recommended you configure no more than

one

ACD key

per

phone.

At any time, at

most one ACD key can be in progress on your phone.

Contact your system administrator for the

User ID and Password to access the

ACD

system.

Advanced Phone Features

111

You can send and receive text messages using the SIP-T21P IP phone. New text

messages can be indicated both acoustically and visually. When receiving a new text

message, the phone will play a warning tone. The LCD screen will prompt receiving new

text messages with the number of waiting messages (e.g., 1 New Text Message(s)) and

a flashing icon.

Note

To read a text message:

1. Press Menu->Messages->Text Message->Inbox.

2. Select the desired message and press the View soft key.

Note

To send a text message:

1. Press Menu->Messages->Text Message->New Message.

SMS is

not

available

all servers

ontact your system administrator

or more

information.

If the phone prompts receiving new text messages, you can also press the

soft key

to read the new messages directly.

User Guide for the SIP-T21P IP Phone

112

2. Compose the new text message. You can press the abc soft key to change the input

mode.

3. Press the Send soft key after completing the content.

4. (Optional.) Press or , or the Switch soft key to select the desired account

from the From field.

5. Enter the number you want to send the message to in the To field.

6. Press the Send soft key to send the message or the Back soft key to cancel.

Sending a text message is configurable via web user interface at the path

Features>SMS.

To reply a text message:

1. Press Menu->Messages->Text Message->Inbox.

2. Select the desired message and press the Reply soft key.

3. Compose the new text message. You can press the abc soft key to change the input

mode.

4. Press the Send soft key after completing the content.

To delete a text message:

1. Press Menu->Messages->Text Message->Inbox (sentbox, Outbox or Draftbox).

2. Select the desired message and then press the Delete soft key.

3. Select Delete to delete the desired message.

Advanced Phone Features

113

The LCD screen prompts Delete Message? .

4. Press the Ok soft key to delete this message or the Cancel soft key to cancel.

You can also delete all text messages by pressing the Delete soft key and then select

Del All. For more information, refer to the above steps.

Note

You can leave voice mails for someone else on the SIP-T21P IP phone. You can also listen

to the voice mails stored in a centralized location. When receiving a new voice mail, the

phone will play a warning tone and the MESSAGE key LED will illuminate. The LCD

screen will display a prompt message and flashing icon.

Note

To leave a voice mail:

You can leave a voice mail for someone else when he/she is busy or inconvenient to

answer the call. Follow the voice prompt from the system server to leave a voice mail,

and then hang up.

You can also delete a

specific message

fter retrieving

by pressing the

soft key.

oice

ail is not available on all servers

ontact your system administrator for more

information.

User Guide for the SIP-T21P IP Phone

114

To configure voice mail access codes via phone user interface:

1. Press Menu->Messages->Voice Mail->Set Voice Mail.

2. Press or to select the account which you want to set, press the 123 soft key

to select the proper input mode and then enter the voice mail access code.

3. Press the Save soft key to accept the change or the Back soft key to cancel.

Note

To listen to voice mails:

1. When the phone user interface prompts receiving new voice mails, press or

the Conn soft key to dial out the voice mail access code.

2. Follow the voice prompt to listen to voice mails.

Note

To view the voice mail via phone user interface:

1. Press Menu->Messages->Voice Mail->View Voice Mail.

The LCD screen displays the amount of new and old voice mails.

2. Select an account and then press the Conn soft key to listen to the voice mails.

The SIP-T21P IP phone supports MWI when receiving a new voice message. If someone

leaves you a voice mail, you will receive a message waiting indicator. MWI will be

Voice mail access code must be predefined on the system server. Contact your system

administrator for the more information.

Before

listening to

voice

mail

, make sure the

voice mail access code

has been

configured.

When all new voice mails are retrieved, the MESSAGE key LED will go out.

Advanced Phone Features

115

indicated in three ways: a warning tone, a prompt message (including a voice mail icon)

on the LCD screen, and the MESSAGE key LED illuminates solid green. This will be

cleared when you retrieve all voice mails or delete them.

The MWI service is unsolicited for some servers, so the SIP-T21P IP phone only handles

the MWI messages sent from the server. But for other servers, the MWI service is

solicited, so the SIP-T21P IP phone must enable subscription for MWI.

Note

The MWI Subscription parameters you need to know:

Option Description

Subscribe for MWI Enable or disable a subscription for MWI service.

MWI Subscription Period

Period of MWI subscription. The IP phone sends a

refresh SUBSCRIBE request before initial SUBSCRIBE

expiration.

Subscribe MWI to Voice

Mail

Enable or disable a subscription to the voice mail

number for MWI service.

To use this feature, you should configure subscribe for

MWI and the voice mail number in advance.

Note

To configure subscribe for MWI via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Advanced.

4. Select Enabled from the pull-down list of Subscribe for MWI field.

MWI

service is

not available on all servers. Contact your system administrator for more

information.

Whether the phone

sends SUBSCRIBE messages for MWI service

to the account or the

voice mail number depends on the server. Contact your system administrator for more

information.

User Guide for the SIP-T21P IP Phone

116

5. Enter the period time in the MWI Subscription Period (Seconds) field.

6. Click Confirm to accept the change.

The IP phone will subscribe to the account number for MWI service by default.

To enable Subscribe MWI to Voice Mail via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Advanced.

4. Select Enabled from the pull-down list of Subscribe MWI To Voice Mail.

5. Enter the desired voice mail number in the Voice Mail field.

Advanced Phone Features

117

6. Click Confirm to accept the change.

The IP phone will subscribe to the voice mail number for MWI service using

Subscribe MWI to Voice Mail.

Note

MWI subscription is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

118

Troubleshooting

119

This chapter provides general troubleshooting information to help to solve the problems

you might encounter when using your SIP-T21P IP phone.

If you require additional information or assistance with your new phone, contact your

system administrator.

Why is the LCD screen blank?

Ensure that the phone is properly plugged into a functional AC outlet.

Ensure that the phone is plugged into a socket controlled by a switch that is on.

If the phone is plugged into a power strip, try plugging it directly into a wall outlet

instead.

If the phone is powered from PoE, ensure you use a PoE-compliant switch or hub.

Why does the phone display Unavailable ?

Ensure that the Ethernet cable is plugged into the Internet port on the phone and

the Ethernet cable is not loose.

Ensure that the switch or hub in your network is operational.

Contact your system administrator for more information.

Why does the phone display No ?

The LCD screen displays No Service when no SIP account registers successfully.

Why doesn t the phone display time and date correctly?

Check if you have configured the phone to obtain the time and date from the SNTP

server automatically. If the phone fails to connect the SNTP server, configure the time

and date manually.

How do I find the basic information of the phone?

Press the OK key when the phone is idle to check the basic information of the phone,

such as the IP address and firmware version. For more the basic information, refer to

Phone Status on page 13.

User Guide for the SIP-T21P IP Phone

120

How to obtain the MAC address of a phone when the phone is not powered on?

Three ways you can obtain the MAC address of a phone:

You can ask your supplier for shipping information sheet which includes MAC

addresses according to the corresponding PO (Purchase Order).

You can find the MAC address in the label of carton box.

You can find the MAC address from on the back of the phone.

Why can t I get a dial tone?

Check for any loose connections and that the phone has been installed properly.

For the installation instructions, refer to Phone Installation on page 11.

Switch between the Handset, Headset (if present) and Hands-Free Speakerphone

to check whether the dial tone is present for one of the audio modes.

If the dial tone exists on another audio mode, connect a different handset or

headset to isolate the problem.

Why doesn t the phone ring?

Check that the ringer volume on the phone. To adjust the ringer volume setting, press

the Volume key when the phone is idle. For more information, refer to Volume on page

24.

Why can t I receive calls?

Check that the SIP registration with your system administrator.

Check that DND (Do Not Disturb) feature is disabled on the phone. Refer to Do Not

Disturb (DND) on page 75.

Check that call forward is disabled on the phone. Refer to Call Forward on page

78.

Check whether the caller number is stored in the blacklist. Refer to Blacklist on

page 38.

Why is my handset not working?

Check that the handset cord is fully connected to both the handset jack on the phone

and handset. Refer to Phone Installation on page 11.

Why is my headset not working?

Check that the headset cord is fully connected to the headset jack on the phone.

Refer to Phone Installation on page 11.

Check that the headset mode is activated. Refer to Headset Mode

Activation/Deactivation on page 45.

Troubleshooting

121

Check that the headset volume is adjusted to an appropriate level. Refer to Volume

on page 24.

What is the difference between user name, register name and display name?

Both user name and register name are defined by the server. A user name is used to

identify the account while a register name matched with a password is used for

authentication if the server requires. Display name is the caller ID that will be displayed

on LCD screen. Server configurations may override local configurations.

Why does the phone play a tone when there is a call on hold? How to disable it?

When there is a call on hold, the phone will play a hold tone every 30 seconds. Play hold

tone is enabled by default. Play hold tone and play hold tone delay are configurable

via web user interface only.

To configure play hold tone and play hold tone delay via web user interface:

1. Click on Features->General Information.

2. Select the desired value from the pull-down list of Play Hold Tone.

3. Enter the desired time (in seconds) in the Play Hold Tone Delay field.

4. Click Confirm to accept the change.

User Guide for the SIP-T21P IP Phone

122

Why can t I send a SMS to any other phone?

SMS depends on support from a SIP server. Contact your system administrator for more

information.

How to change the user password?

To change the user password via web user interface:

1. Click on Security->Password.

2. Select user from the pull-down list of User Type.

3. Enter the new user password in the New Password field and Confirm Password field.

4. Click Confirm to accept the change.

Note

How to make a call using SRTP?

You can enable SRTP to encrypt the audio stream(s) of phone calls. The parties

participating in the call should enable SRTP. You can enable SRTP on a per-line basis.

To enable SRTP via web user interface:

1. Click on Account.

2. Select the desired account from the pull-down list of Account.

3. Click on Advanced.

If logging into the web user interface of the phone with the user credential, you need

enter the current user password in the Old Password field.

User password is configurable via web user interface only.

Troubleshooting

123

4. Select the desired value from the pull-down list of RTP Encryption (SRTP).

5. Click Confirm to accept the change.

Note

How to reboot the phone?

To reboot the phone via web user interface:

1. Click on Settings->Upgrade.

RTP is not available on all servers. Contact your

system administrator for more

information.

SRTP is configurable via web user interface only.

User Guide for the SIP-T21P IP Phone

124

2. Click Reboot to reboot the phone.

Note

How to export PCAP trace?

We may need you to provide a PCAP trace to help analyze your problem.

To export a PCAP trace via web user interface:

1. Click on Settings->Upgrade.

2. Click Start to start recording signal traffic.

3. Recreate the error to be documented in the trace.

4. Click Stop to stop recording.

5. Click Export to open file download window, and then save the file to your local

system.

You can also long press the

key to reboot the phone directly.

Any reboot of

the

phone

may take a few minutes.

Troubleshooting

125

How to export system log?

We may need you to provide debug log information to help analyze problem. By

default, you can export the debug system log information to local PC.

To export the system log to local PC via web user interface:

1. Click on Upgrade->Advanced.

2. Select 6 from the pull-down list of System Log Level.

The default system log level is 3.

3. Click Confirm to accept the change.

The web user interface prompts Do you want to restart your machine? . The

configuration will take effect after reboot.

4. Click OK to reboot the phone.

After the IP phone finishes reboot, the system log level is set as 6, the debug level.

5. Mark the Local radio box in the Export System Log field.

6. Click Export to open file download window, and then save the file to your local

system.

You can also export the system log to a syslog server. Contact your system administrator

for more information.

How to export/import phone configurations?

We may need you to provide the phone configurations to help analyze your problem. In

some instance, you may need to import configurations to the phone.

To export the phone configurations via web user interface:

1. Click on Settings->Configuration.

User Guide for the SIP-T21P IP Phone

126

2. Click Export to open file download window, and then save the file to your local

system.

To import the phone configurations via web user interface:

1. Click on Settings->Configuration.

2. Click Browse to locate a configuration file from your local system.

3. Click Import to import the configuration file.

Note

How to upgrade firmware?

To upgrade firmware via web user interface:

1. Click on Settings->Upgrade.

The file format of configuration file must be *.bin.

Troubleshooting

127

2. Click Browse to locate the firmware from your local system.

3. Click Upgrade to upgrade the firmware.

The web user interface prompts SIP Phone will be updated. It will

take 5 minutes to complete. .

4. Click OK to confirm upgrading.

How to reset the phone?

Reset the phone when other troubleshooting suggestions do not correct the problem.

You need to note that all customized settings will be overwritten after resetting. We

recommend asking your system administrator for advice before resetting the phone.

To reset the phone via phone user interface:

1. Press Menu->Settings->Advanced Settings (password: admin).

2. Press or to scroll to Reset To Factory, and then press the Enter soft key.

The LCD screen prompts Reset to factory settings? .

User Guide for the SIP-T21P IP Phone

128

3. Press the Ok soft key.

The LCD screen prompts Resetting Please Wait! .

The LCD screen prompts Welcom Initializing please wait .

The phone will be reset to factory sucessfully after startup.

Note

Reset

of your phone may take a few minutes.

Do not power off until the phone starts up

successfully.

Regulatory Notices

129

Contact your Yealink Authorized Reseller for information about service agreements

applicable to your product.

TO THE FULL EXTENT ALLOWED BY LAW, YEALINK EXCLUDES FOR ITSELF AND ITS

SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING

NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE

DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF BUSINESS,

LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN

CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE,

FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF YEALINK OR ITS AUTHORIZED

RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH AMAGES, AND LIMITS ITS

LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE RICE PAID, AT

AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.

Save these instructions. Read these safety instructions before use!

The following basic safety precautions should always be followed to reduce risk of fire,

electrical shock, and other personal injury.

General Requirements

Before you install and use the device, read the safety instructions carefully

and observe the situation during operation.

During the process of storage, transportation, and operation, please always

keep the device dry and clean.

During the process of storage, transportation, and operation, please avoid

collision and crash of the device.

Please attempt not to dismantle the device by yourself. In case of any

discrepancy, please contact the appointed maintenance center for repair.

Without prior written consent, no organization or individual is permitted to

make any change to the structure or the safety design of the device. Yealink

is under no circumstance liable to consequences or legal issues caused by

such changes.

Please refer to the relevant laws and statutes while using the device. Legal

rights of others should be respected as well.

Environmental Requirements

Place the device at a well-ventilated place. Do not expose the device under

direct sunlight.

Keep the device dry and free of dusts.

Place the device on a stable and level platform.

User Guide for the SIP-T21P IP Phone

130

Please place no heavy objects on the device in case of damage and

deformation caused by the heavy load.

Keep at least 10 cm between the device and the closest object for heat

dissipation.

Do not place the device on or near any inflammable or fire-vulnerable object,

such as rubber-made materials.

Keep the device away from any heat source or bare fire, such as a candle or

an electric heater.

Keep the device away from any household appliance with strong magnetic

field or electromagnetic field, such as a microwave oven or a refrigerator.

Operating Requirements

Do not let a child operate the device without guidance.

Do not let a child play with the device or any accessory in case of accidental

swallowing.

Please use the accessories provided or authorized by the manufacturer only.

The power supply of the device shall meet the requirements of the input

voltage of the device. Please use the provided surge protection power

socket only.

Before plugging or unplugging any cable, make sure that your hands are

completely dry.

Do not spill liquid of any kind on the product or use the equipment near

water, for example, near a bathtub, washbowl, kitchen sink, wet basement

or near a swimming pool.

Do not tread on, pull, or over-bend any cable in case of malfunction of the

device.

During a thunderstorm, stop using the device and disconnect it from the

power supply. Unplug the power plug and the Asymmetric Digital Subscriber

Line (ADSL) twisted pair (the radio frequency cable) to avoid lightning strike.

If the device is left unused for a rather long time, disconnect it from the

power supply and unplug the power plug.

When there is smoke emitted from the device, or some abnormal noise or

smell, disconnect the device from the power supply, and unplug the power

plug immediately. Contact the specified maintenance center for repair.

Do not insert any object into equipment slots that is not part of the product or

auxiliary product.

Before connecting a cable, connect the grounding cable of the device first.

Do not disconnect the grounding cable until you disconnect all other cables.

Cleaning Requirements

Before cleaning the device, stop using it and disconnect it from the power

supply.

Use a piece of soft, dry and anti-static cloth to clean the device.

Keep the power plug clean and dry. Using a dirty or wet power plug may

lead to electric shock or other perils.

Appendix A-Time Zones

131

Time Zone Time Zone Name

11:00 Samoa

10:00 United States-Hawaii-Aleutian

10:00 United States-Alaska-Aleutian

09:00 United States-Alaska Time

08:00 Canada(Vancouver, Whitehorse)

08:00 Mexico(Tijuana, Mexicali)

08:00 United States-Pacific Time

07:00 Canada(Edmonton, Calgary)

07:00 Mexico(Mazatlan, Chihuahua)

07:00 United States-Mountain Time

07:00 United States-MST no DST

06:00 Canada-Manitoba(Winnipeg)

06:00 Chile(Easter Islands)

06:00 Mexico(Mexico City, Acapulco)

06:00 United States-Central Time

05:00 Bahamas(Nassau)

05:00

Canada(Montreal,

Ottawa

, Quebec)

05:00

Cuba

(Havana)

05:00

United States

Eastern Time

04:30 Venezuela(Caracas)

04:00 Canada(Halifax, Saint John)

04:00 Chile(Santiago)

04:00 Paraguay(Asuncion)

04:00 United Kingdom-Bermuda(Bermuda)

04:00 United Kingdom(Falkland Islands)

04:00 Trinidad&Tobago

03:30 Canada-New Foundland(St.Johns)

03:00 Denmark-Greenland(Nuuk)

03:00 Argentina(Buenos Aires)

03:00 Brazil(no DST)

03:00 Brazil(DST)

02:00 Brazil(no DST)

01:00 Portugal(Azores)

0 GMT

0 Greenland

0 Denmark-Faroe Islands(Torshavn)

0 Ireland(Dublin)

0 Portugal(Lisboa, Porto, Funchal)

0 Spain-Canary Islands(Las Palmas)

0 United Kingdom(London)

0 Morocco

+01:00 Albania(Tirane)

+01:00 Austria(Vienna)

+01:00

Belgium(Brussels)

+01:00

Caicos

+01:00

Chad

+01:00 Croatia(Zagreb)

+01:00 Czech Republic(Prague)

+01:00 Denmark(Kopenhagen)

+01:00 France(Paris)

+01:00 Germany(Berlin)

User Guide for the SIP-T21P IP Phone

132

Time Zone Time Zone Name

+01:00 Hungary(Budapest)

+01:00 Italy(Rome)

+01:00 Luxembourg(Luxembourg)

+01:00 Macedonia(Skopje)

+01:00 Netherlands(Amsterdam)

+01:00 Namibia(Windhoek)

+02:00 Estonia(Tallinn)

+02:00 Finland(Helsinki)

+02:00 Gaza Strip(Gaza)

+02:00 Greece(Athens)

+02:00 Israel(Tel Aviv)

+02:00

Jordan(Amman)

+02:00

Latvia(Riga)

+02:00

Lebanon

(Beirut)

+02:00

Moldova(Kishinev)

+02:00 Russia(Kaliningrad)

+02:00

Romania

(Bucharest)

+02:00

Syria

(Damascus)

+02:00 Turkey(Ankara)

+02:00 Ukraine(Kyiv, Odessa)

+02:00 Syria(Damascus)

+03:00 East Africa Time

+03:00 Iraq(Baghdad)

+03:00 Russia(Moscow)

+03:30 Iran(Teheran)

+04:00 Armenia(Yerevan)

+04:00 Azerbaijan(Baku)

+04:00 Georgia(Tbilisi)

+04:00 Kazakhstan(Aktau)

+04:00 Russia(Samara)

+04:30 Afghanistan

+05:00 Kazakhstan(Aqtobe)

+05:00 Kyrgyzstan(Bishkek)

+05:00 Pakistan(Islamabad)

+05:00 Russia(Chelyabinsk)

+05:30 India(Calcutta)

+06:00 Kazakhstan(Astana, Almaty)

+06:00 Russia(Novosibirsk, Omsk)

+07:00

Russia(Krasnoyarsk)

+07:00

Thailand(Bangkok)

+08:00

China(Beijing)

+08:00

Singapore(

Singapore

)

+08:00

Australia(Perth)

+09:00 Korea(Seoul)

+09:00

Japan(Tokyo)

+09:30 Australia(Adelaide)

+09:30 Australia(Darwin)

+10:00 Australia(Sydney, Melbourne, Canberra)

+10:00 Australia(Brisbane)

+10:00 Australia(Hobart)

+10:00 Russia(Vladivostok)

+10:30 Australia(Lord Howe Islands)

+11:00 New Caledonia(Noumea)

+12:00 New Zealand(Wellington, Auckland)

+12:45 New Zealand(Chatham Islands)

+13:00 Tonga(Nukualofa)

Index

133

About This Guide v

Account Management 54

Account Registration 54

Adding Contacts 31

Adding Groups 29

Administrator password 20

Anonymous Call 95

Anonymous Call Rejection 96

Answering Calls 67

Area Code 59

Attaching Stand 11

Audio Settings 24

Auto Answer 70

Auto Redial 71

Automatic Call Distribution (ACD) 109

Basic Network Settings 14

Blacklist 38

Block Out 60

Busy Lamp Field (BLF) 97

Call Completion 72

Call Forward 78

Call History Management 42

Call Hold/Resume 74

Call Mute 73

Call Park 89

Call Pickup 90

Call Recording 99

Call Return 73

Call Transfer 84

Call Waiting 86

CE Mark Warning ii

Conference 86

Contact Management 27

Contrast 17

Customizing Your Phone 17

Declaration of Conformity ii

Deleting Contacts 33

Deleting Groups 30

Dial-now 57

Dial Plan 55

Directory 27

Do Not Disturb (DND) 75

Documentations 8

DSS Keys 46

Editing Contacts 33

Editing Groups 29

Emergency Number 61

Ending Calls 68

General Settings 17

Getting Started 9

Hardware Component Instructions 1

Headset Mode Activation/Deactivation 45

Headset Prior 45

Headset Use 45

Hot Desking 101

Hotline 63

Icon Instructions 3

Idle screen 16

Importing/Exporting Contact lists 37

In This Guide v

Incoming Intercom Calls 103

Intercom 103

Key as Send 21

Keypad Lock 21

Language 18

LED Instructions 4

Limitation of Liability 129

Line Keys 46

Live Dialpad 62

Local Conference 87

Local Directory 28

Logo Customization 44

Messages 111

User Guide for the SIP-T21P IP Phone

134

Message Waiting Indicator 114

Multicast Paging 105

Music on Hold 108

Network Conference 87

Network Connection 11

No answer Forward 78

Outgoing Intercom Calls 103

Overview 1

Packaging Contents 9

Phone Initialization 13

Phone Installation 11

Phone Status 13

Phone User Interface 5

Placing Calls 65

Placing Calls to Contacts 34

Programmable Keys 53

Receiving RTP Stream 107

Recent Call In Dialing 69

Redialing Numbers 69

Registration 16

Regulatory Notices 129

Remote Phone Book 40

Replace Rule 56

Ring Tones 25

Safety Instructions 129

Search Source List in Dialing 35

Searching for Contacts 35

Semi-attended Transfer 84

Sending RTP Stream 105

Service Agreements 129

Short Message Service (SMS) 111

System Customizations 44

Time and Date 19

Time Zones 131

Troubleshooting 119

Voice Mail 113

Volume 24

Warranty ii

Web User Interface 5

WEEE Warning iii

YEALINK T21P IP Phone User Manual

YEALINK (XIAMEN ) NETWORK TECHNOLOGY CO., LTD. IP Phone Users Manual

User Manual

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