Yealink SIP-T21 User Manual
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.
Copyright © 2013 YEALINK NETWORK TECHNOLOGY CO., LTD
Copyright © 2013 Yealink Network Technology CO., LTD. All rights reserved. No parts of this
publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, photocopying, recording, or otherwise, for any purpose, without the express written
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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.
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.
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.
Note: This device is tested and complies with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experience radio/TV technician for help.
We are striving to improve our documentation quality and we appreciate your feedback. Email
your opinions and comments to DocsFeedback@yealink.com.
Yealink SIP-T21P/SIP-T21 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
Shared Line, Busy Lamp Field List, Network Directory and Network Call Log features are
hidden for IP phones in neutral firmware version, which are designed for BroadWorks
environment. Please contact your system administrator for more information.
Thank you for choosing the SIP-T21P/SIP-T21 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. The difference between the SIP-T21P and
SIP-T21 IP phone is that the former supports PoE, while the latter does not.
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/SIP-T21 IP phone.
If this is your first time using the SIP-T21P/SIP-T21 IP phone, we recommend that you first
refer to the
Quick Installation Guide
and
Quick Reference Guide
, available online:
http://www.yealink.com/SupportDownloadfiles_detail.aspx?CateId=333&flag=142.
Note
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
This section describes the changes to this guide for each release and guide version.
Major updates have occurred to the following sections:
LED Instructions on page 4
v
User Guide for the SIP-T21P/SIP-T21 IP Phone
Anonymous Call on page 93
Documentations of the SIP-T21 IP phone have also been added.
Major updates have occurred to the following sections:
LED Instructions on page 4
Anonymous Call on page 93
Troubleshooting on page 117
vi
Table of Contents
About This Guide ...................................................................... v
In This Guide ......................................................................................................................... v
Summary of Changes .......................................................................................................... v
Changes for Release 72, Guide Version 72.1 ................................................................ v
Changes for Release 71, Guide Version 71.91 ............................................................. vi
Changes for Release 71, Guide Version 71.90 ............................................................. vi
Table of Contents ..................................................................... vii
Overview .................................................................................. 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
vii
User Guide for the SIP-T21P/SIP-T21 IP Phone
Volume ............................................................................................................................. 24
Ring Tones ........................................................................................................................ 25
Contact Management ....................................................................................................... 27
Directory........................................................................................................................... 27
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 ........................................................................................................ 60
Live Dialpad .................................................................................................................... 61
Hotline .............................................................................................................................. 62
Basic Call Features ................................................................. 63
Placing Calls ....................................................................................................................... 63
Answering Calls ................................................................................................................. 65
Ending Calls ........................................................................................................................ 66
Redialing Numbers ............................................................................................................ 67
Recent Call In Dialing ........................................................................................................ 67
Auto Answer ....................................................................................................................... 68
Auto Redial .......................................................................................................................... 69
Call Completion ................................................................................................................. 70
Call Return ........................................................................................................................... 71
Call Mute ............................................................................................................................. 71
Call Hold/Resume ............................................................................................................... 72
Do Not Disturb (DND) ........................................................................................................ 73
Call Forward ....................................................................................................................... 76
Call Transfer ........................................................................................................................ 82
Call Waiting ........................................................................................................................ 84
Conference ......................................................................................................................... 84
Local Conference ............................................................................................................ 85
Network Conference ...................................................................................................... 85
Call Park .............................................................................................................................. 87
Call Pickup .......................................................................................................................... 88
Anonymous Call ................................................................................................................. 93
Anonymous Call Rejection ................................................................................................ 94
Advanced Phone Features ..................................................... 95
viii
Table of Contents
Busy Lamp Field (BLF) ....................................................................................................... 95
Call Recording .................................................................................................................... 97
Hot Desking ........................................................................................................................ 99
Intercom ............................................................................................................................ 101
Outgoing Intercom Calls .............................................................................................. 101
Incoming Intercom Calls .............................................................................................. 101
Multicast Paging ............................................................................................................... 103
Sending RTP Stream ..................................................................................................... 103
Receiving RTP Stream ................................................................................................... 105
Music on Hold ................................................................................................................... 106
Automatic Call Distribution (ACD).................................................................................. 107
Messages .......................................................................................................................... 109
Short Message Service (SMS) .................................................................................... 109
Voice Mail ...................................................................................................................... 111
Message Waiting Indicator (MWI) ............................................................................. 112
Troubleshooting .....................................................................117
Regulatory Notices ................................................................127
Service Agreements ........................................................................................................ 127
Limitations of Liability ...................................................................................................... 127
Safety Instructions ............................................................................................................ 127
Appendix A - Time Zones ......................................................129
Index ......................................................................................131
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User Guide for the SIP-T21P/SIP-T21 IP Phone
x
Overview
This chapter provides the overview of the SIP-T21P/SIP-T21 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/SIP-T21 IP phone are the LCD screen and
the keypad.
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User Guide for the SIP-T21P/SIP-T21 IP Phone
Item
Description
①
LCD Screen
Shows information about calls, messages, soft keys,
time, date and other relevant data:
• Call information — caller ID, call duration
• Icons (for example, )
• Missed call text or second incoming caller information
• Prompt text (for example, "Saving config file!")
• Time and date
②
Power Indicator LED
Indicates phone power status and phone status.
③
Line Keys
Use these keys to activate up to two accounts and assign
various features.
④
MESSAGE Key
Indicates and accesses voice mails.
⑤
HEADSET Key
Toggles the headset mode.
⑥
TRAN Key
Transfers a call to another party.
⑦
RD Key
Redials a previously dialed number.
⑧
Speakerphone Key
Toggles the hands-free speakerphone mode.
⑨
Volume Key
Adjusts the volume of the handset, headset, speaker,
and ringer.
⑩
Keypad
Provides the digits, letters and special characters in
context-sensitive applications.
⑪
Scroll through the displayed information.
Confirms actions or answers incoming calls.
Cancels actions, rejects incoming calls, mutes or
un-mutes calls.
⑫
Soft Keys
Label automatically to identity their context-sensitive
features.
Hardware component instructions of the SIP-T21P/SIP-T21 IP phone are:
2
Icons appearing on the LCD screen are described in the following table:
Icon
Description
Network is unavailable
Registered successfully
Register failed
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
Overview
3
User Guide for the SIP-T21P/SIP-T21 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
LED Status
Description
Solid green
The phone is initializing.
The phone is busy.
The phone is idle.
The call is placed on hold or is held.
The phone receives a text message or voice mail.
Fast flashing green (300ms)
The phone is ringing.
The call is mute.
Off
The phone is powered off.
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.
Power Indicator LED
Line key LED
4
LED Status
Description
Solid green
The monitored user is idle.
Fast flashing green (200ms)
The monitored user receives an incoming call.
Slow flashing green (500ms)
The monitored user is dialing.
The monitored user is talking.
The monitored user’s conversation is placed on
hold.
Slow flashing green (1s)
The call is parked against the monitored user ’s
phone number.
Off
The monitored user does not exist.
Note
The above introduces the default LED status. The statuses of the power indicator LED and
BLF key are configurable via web user interface. For more information, refer to
Yealink_SIP-T2xP_and_SIP-T19P_IP_Phone_Family_Administrator_Guide
.
Line key LED (configured as a BLF key)
Overview
Two ways to customize configurations of your SIP-T21P/SIP-T21 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
5
User Guide for the SIP-T21P/SIP-T21 IP Phone
Options
Phone User Interface
Web User Interface
Status
√
√
--IP Address
--MAC
--Firmware
--Network
--Phone
--Accounts
Basic Phone Settings
--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
√
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:
6
Overview
Options
Phone User Interface
Web User Interface
--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
√
--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
√
The table above lists most of the feature options. Please refer to the relevant sections for
more information.
Note
7
User Guide for the SIP-T21P/SIP-T21 IP Phone
Name
Contents
Where found
Language
Quick Installation
Guide
Basic setup of the
phone
In the
package
English
Quick Reference
Guide
Basic call features and
phone customizations
In the
package
English
User Guide
Phone/Web user
interface settings
Basic call features and
advanced phone
features
CD attached
in the
package
English
You can also download the latest documentations online:
http://www.yealink.com/SupportDownloadfiles_detail.aspx?CateId=333&flag=142.
The following table shows documentations available for the SIP-T21P/SIP-T21 IP phone.
Note
8
Getting Started
This chapter provides basic installation instructions and information for obtaining the
best performance with the SIP-T21P/SIP-T21 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/SIP-T21 IP phone package:
SIP-T21P/SIP-T21 IP Phone
Phone Stand
9
User Guide for the SIP-T21P/SIP-T21 IP Phone
Power Adapter
Handset & Handset Cord
Ethernet Cable
Quick Installation Guide & Quick Reference Guide
CD-ROM
10
Check the list before installation. If you find anything missing, contact your system
administrator.
Getting Started
A headset is not included in the packaging contents. Contact your system administrator
for more information.
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
Note
2) Connect the handset and optional headset
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)
11
User Guide for the SIP-T21P/SIP-T21 IP Phone
If in-line power switch/hub is provided, you don’t need to connect the phone to the power
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.
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. PoE is not applicable to the SIP-T21 IP phone.
To connect the PoE for the SIP-T21P IP phone:
1. Connect the Ethernet cable between the Internet port on the phone and an
available port on the in-line power switch/hub.
Note
12
Note
If your network does not use DHCP, proceed to Basic Network Settings on page 14.
You can view device certificate status via phone user interface only.
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
displays “Initializing…please wait” during this process.
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).
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 address in the browser’s address bar, and then press Enter.
13
User Guide for the SIP-T21P/SIP-T21 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
Port.
14
Getting Started
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.
2. Press to select IPv4 and press the Enter soft key.
3. Press to select Static IP Client and press the Enter soft key.
4. Enter the desired values in the IP Address, Subnet Mask, Default Gateway, Pri.DNS
and Sec.DNS fields respectively.
5. 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.
2. Press to select IPv6 and press the Enter soft key.
3. Press to select Static IPv6 Client and press the Enter soft key.
4. Enter the desired values in the IPv6 , IPv6 Prefix, IPv6 Gateway, IPv6 Pri.DNS and
IPv6 Sec.DNS fields respectively.
5. 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
15
User Guide for the SIP-T21P/SIP-T21 IP Phone
Wrong network settings 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.
will perform a PPP negotiation to obtain the IP address. Contact your system
administrator for the PPPoE user name and password.
To configure PPPoE via phone user interface:
1. Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port.
2. Press to select IPv4 and press the Enter soft key.
3. Press to select PPPoE IP Client and press the Enter soft key.
4. Enter the user name and password in the corresponding fields.
Note
5. Press the Save soft key to accept the change or the Back soft key to cancel.
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.
16
Customizing Your Phone
You can customize your SIP-T21P/SIP-T21 IP phone by personally configuring certain
settings, for example, contrast, language and time & date. You can add contacts to the
phone’s 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 Settings->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.
17
User Guide for the SIP-T21P/SIP-T21 IP Phone
Not all of the supported languages 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.
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 Settings->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.
18
Customizing Your Phone
Please refer to Appendix A - Time Zones for the list of available time zones on the IP
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 Settings->Time & Date->SNTP Settings.
Note
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.
To configure the time and date manually via phone user interface:
1. Press Menu->Settings->Basic Settings->Time & Date->Manual Settings.
2. Enter the specific date in the Date field.
3. Enter the specific time in the Time field.
19
User Guide for the SIP-T21P/SIP-T21 IP Phone
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
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 Settings->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 the date format “WWW DD MMM”,
“WWW” represents the abbreviation of the week, “DD” represents the two-digit day,
and “MMM” represents the first three letters of the month.
The date formats you need to know:
Time and date is configurable via web user interface at the path Settings->Time & Date.
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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.
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