Yealink SIP-T28P User Guide

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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.

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

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

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

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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 interferences 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.

About This Guide

Thank you for choosing the SIP-T28P IP phone, an exquisitely designed SIP IP phone. This

unit provides business telephony features such as Call Hold, Call Transfer, Busy Lamp

Field, Shared Line, Hot Desking, Multicast Paging and Conference over an IP network.

This guide provides everything you need to quickly use your new phone. Be sure to

verify with your system administrator that your network is prepared for configuring your

IP phone. As well, be sure to read the Packing List and Regulatory Notices sections in this

guide before you set up and use the SIP-T28P IP phone.

If this is your first time using the SIP-T28P IP phone, we recommend that you first refer to

the Quick Installation Guide and Quick Reference Guide. Documents are available for

download at: http://www.yealink.com/index.php/Support/.

This is the first edition based on firmware version 61.0. The 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

User Guide SIP-T28P IP Phone

Table of Contents

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

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

Table of Contents ..................................................................... vii

Overview .................................................................................. 1

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

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

LED Instructions ..................................................................................................................... 5

User Interfaces ..................................................................................................................... 6

Phone User Interface ........................................................................................................ 6

Web User Interface ........................................................................................................... 7

Documentation ..................................................................................................................... 9

Getting Started ....................................................................... 11

Packing List .......................................................................................................................... 11

Phone Installation ............................................................................................................... 13

Phone Initialization ............................................................................................................. 15

Phone Status ....................................................................................................................... 16

Basic Network Settings ...................................................................................................... 16

Registration ......................................................................................................................... 17

Idle Screen .......................................................................................................................... 17

Customizing Your Phone ......................................................... 19

General Settings ................................................................................................................ 19

Contrast ............................................................................................................................ 19

Backlight .......................................................................................................................... 20

Language ......................................................................................................................... 21

Time and Date ................................................................................................................. 21

Key as Send ..................................................................................................................... 24

Keypad Lock .................................................................................................................... 24

Audio Settings .................................................................................................................... 26

Volume ............................................................................................................................. 26

Ring Tones ........................................................................................................................ 26

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

vii

User Guide SIP-T28P IP Phone

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

Blacklist ............................................................................................................................ 32

Remote Phonebook ........................................................................................................ 32

Call History Management ................................................................................................ 33

System Customizations ...................................................................................................... 35

Logo Customization ........................................................................................................ 35

Headset Use .................................................................................................................... 35

DSS Keys .......................................................................................................................... 36

Account Management ................................................................................................... 41

Dial Plan ........................................................................................................................... 43

Emergency Number ........................................................................................................ 46

Live Dialpad .................................................................................................................... 46

Hot Line ............................................................................................................................ 47

Basic Call Features ................................................................. 49

Placing Calls ....................................................................................................................... 49

Answering Calls ................................................................................................................. 51

Ending Calls ........................................................................................................................ 52

Redialing Numbers ............................................................................................................ 53

Call Return ........................................................................................................................... 53

Call Mute ............................................................................................................................. 53

Call Hold/Resume ............................................................................................................... 54

Do Not Disturb (DND) ........................................................................................................ 55

Call Forward ....................................................................................................................... 55

Call Transfer ........................................................................................................................ 58

Conference ......................................................................................................................... 59

Local Conference ............................................................................................................ 59

Network Conference ...................................................................................................... 60

Call Park .............................................................................................................................. 61

Call Pickup .......................................................................................................................... 62

Anonymous Call ................................................................................................................. 64

Anonymous Call Rejection ................................................................................................ 65

Advanced Phone Features ..................................................... 67

Busy Lamp Field (BLF) ....................................................................................................... 67

BLF List ................................................................................................................................. 68

Shared Line ......................................................................................................................... 69

Call Recording .................................................................................................................... 71

Hot Desking ........................................................................................................................ 73

Intercom .............................................................................................................................. 74

Outgoing Intercom Calls ................................................................................................ 74

Incoming Intercom Calls ................................................................................................ 75

Multicast Paging ................................................................................................................. 77

viii

Table of Contents

Sending RTP Stream ....................................................................................................... 77

Receiving RTP Stream ..................................................................................................... 78

Music on Hold ..................................................................................................................... 79

Automatic Call Distribution (ACD).................................................................................... 80

Messages ............................................................................................................................ 82

Short Message Service (SMS) ...................................................................................... 82

Voice Mail ........................................................................................................................ 84

Message Waiting Indicator (MWI) ............................................................................... 86

Troubleshooting ...................................................................... 87

Regulatory Notices ................................................................. 91

Service Agreements .......................................................................................................... 91

Limitations of Liability ........................................................................................................ 91

Safety Instructions .............................................................................................................. 91

Appendix A - Time Zones ....................................................... 93

Index ....................................................................................... 95

User Guide SIP-T28P IP Phone

Overview

This chapter provides the overview of the SIP-T28P IP phone. The topics include:

 Hardware Component Instructions

 Icon Instructions

 LED Instructions

 User Interfaces

 Documentation

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

system administrator.

The main hardware components of the SIP-T28P IP phone are the LCD screen and the

keypad.

User Guide SIP-T28P 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 files! Please wait…")

• Time and date

②

Power Indicator LED

Indicates phone power status.

③

Line Keys

Use these keys to activate up to six accounts.

④

Memory Keys

Use these keys to assign various features. The key LED

will light up when the assigned feature is enabled.

⑤

MESSAGE Key

Indicates and accesses voice messages.

⑥

HEADSET Key

Toggles and indicates the headset mode.

⑦

HOLD Key

Places a call on hold or resumes a held call.

⑧

TRAN Key

Transfers a call to another party.

⑨

MUTE Key

Toggles the Mute feature on or off.

⑩

Speakerphone Key

Toggles the hands-free speakerphone mode.

⑪

Redial Key

Redials a previously dialed number.

⑫

CONF Key

Conducts a conference call with multiple other parties.

⑬

Volume Key

Adjusts the volume of the handset, headset, speaker,

and ringer.

⑭

Keypad

Provides the digits, letters, and special characters in

context-sensitive applications.

⑮

Scroll through the displayed information.

Confirms actions or answers an incoming call.

Cancels actions or rejects an incoming call.

⑯

Soft Keys

Labels automatically to identity their context-sensitive

features.

Hardware component instructions of the SIP-T28P IP phone are:

Icons appear on the phone LCD screen are described in the following table:

Icons

Description

Network is unavailable

Registered successfully

Registered fail

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

Voice Mail

Text Message

Auto Answer

Do Not Disturb

Call Forward

Call Hold

Call Mute

Ringer volume is 0

Overview

User Guide SIP-T28P IP Phone

Icons

Description

Keypad Lock

Received Calls

Dialed Calls

Missed Calls

Recording box is full

A call cannot be recorded

Recording starts successfully

Recording cannot be started

Recording cannot be stopped

Power Indicator LED

LED Status

Description

Solid green

The phone is powered on.

Flashing green

The phone is ringing (Hardware version must be 1.0.0.1

or higher).

Off

The phone is powered off.

LED Status

Description

Solid green

The line is active.

Fast flashing green

The line receives an incoming call, the phone is ringing.

Slow flashing green

The call is placed on hold.

Off

The line is inactive.

LED Status

Description

Solid green

The monitored user is idle.

Fast flashing green

The monitored user is ringing.

Slow flashing green

The monitored user is busy.

Off

The monitored user does not exist.

LED Status

Description

Solid green

All the shared line parties are idle.

Slow flashing green

The shared line is seized.

Some party receives the ringback.

The shared line conversation is placed on private

hold.

For multi-party call, all the parties place the shared

line conversation on hold.

Fast flashing green

The shared line receives an incoming call.

The shared line is in conversation.

The shared line conversation is placed on public hold.

Off

The shared line does not exist.

LED Status

Description

Solid green

The monitored user is idle.

Flashing red

The monitored user is ringing.

Line key LED

Overview

Line key LED (configured as BLF key)

Line key LED (configured as shared line key)

Memory key LED (configured as BLF key)

User Guide SIP-T28P IP Phone

LED Status

Description

Solid red

The monitored user is busy.

Off

The monitored user does not exist.

LED Status

Description

Solid green

All the parties are idle.

Solid red

The shared line is seized.

Fast flashing green

Some party receives the ringback.

Fast flashing red

The shared line receives an incoming call.

Solid orange

The shared line is in conversation.

Slow flashing orange

The shared line conversation is placed on public hold.

Slow flashing green

The shared line conversation is placed on private hold.

Slow flashing red

For multi-party call, all the parties place the shared line

conversation on hold.

Off

The shared line does not exist.

Memory key LED (configured as shared line key)

There are two ways to customize specific configurations on your SIP-T28P IP phone:

 Using the user interface on the IP phone.

 Using the user interface in an internet browser window from 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 instances, it is possible to use both the phone

user interface and the web user interface to operate the phone and change settings.

However, in some instances, it is only possible to use the phone or the web user

interface.

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

interface. The "Advanced Settings" options are administrator level features only, the

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

phone using the available options from the phone user interface, refer to Customizing

Your Phone on page 19.

Note

Options

Phone User Interface

Web User Interface

Status

--IP

--MAC

--Firmware

--Network

--Phone

--Accounts

√

Basic Call Features

--Call Forward

--Call Park

--Call Pickup

--Call Return

--Conference

--Anonymous Call

--Anonymous Call Rejection

--DND

√

Basic Phone Settings

--Language

--Time & Date

--Ring Tones

--Contrast

--Backlight

--Call Waiting

--Keypad Lock

--Phone Volume

--Logo Customization

--Call History Management

--Contact Management

√

Please locate your PC in the same network segment of the IP phone (192.168.0.X) to access the web user interface.

Overview

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 user name is admin (case-sensitive) and the password is 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:

User Guide SIP-T28P IP Phone

Options

Phone User Interface

Web User Interface

--Local Directory

--Blacklist

--Remote Phonebook

--Dial Plan

--DSS Keys

--Key as Send

--Hot Line

--Live Dialpad

--Emergency

√

Advanced Phone Features

--BLF/BLF List

--Shared Line

--Intercom

--Call Recording

--Hot Desking

--Multicast Paging

--Music on Hold

--ACD

--Messages

√

SIP Account

--User Options

--Register Status

--Activation

--Label

--Display Name

--Register Name

--User Name

--Password

--SIP Server

--Server Option

--Registrar Port

--Outbound Status

--Outbound Proxy

--Backup 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

The following table shows documentations available for the SIP-T28P IP phone.

Name

Contents

Where found

Format/ Language

Quick Installation

Guide

Basic set up 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

You can also download the latest documentations from website:

http://www.yealink.com/index.php/Support/

Overview

Note

User Guide SIP-T28P IP Phone

Getting Started

This chapter provides basic installation instructions and information for obtaining the

best performance with the SIP-T28P IP phone. The topics include:

 Packing List

 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-T28P IP phone package:

 SIP-T28P IP phone

 Phone Stand

User Guide SIP-T28P 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

A headset is not provided in the packing list. Contact your system administrator for more information.

If your phone is already installed, proceed to Phone Initialization on page 15.

This section introduces how to install the phone with the components in the packing list:

 Attach the Stand

 Connect the Handset and optional Headset

 Connect the Network and Power

1) Attach the Stand:

2) Connect the Handset and optional Headset:

Note

User Guide SIP-T28P IP Phone

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)

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 supplied Ethernet cable between the Internet port on the phone and

the Internet port in your network or switch/hub device port.

Power over Ethernet

Using a regular Ethernet cable, the SIP-T28P IP phone can be powered from a PoE (IEEE

802.3af) compliant switch or hub.

Getting Started

If in-line power is provided, you don’t need to connect the AC adapter. Make sure the Ethernet cable and switch/hub is PoE compliant.

The phone can also share the network with other 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.

If your network does not use DHCP, proceed to Basic Network Settings on page 16.

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

After your phone has been powered up, the system boots up and performs the

following steps:

Automatic Phone Initialization

The phone finishes the initialization process by loading the saved configuration. The

phone LCD screen will display "Initializing, Please Wait" during the initialization.

DHCP (Dynamic Host Configuration Protocol)

By default the phone attempts to contact a DHCP server in your network in order to

obtain its valid network settings, e.g. IP address, subnet mask, gateway, DNS server.

Note

User Guide SIP-T28P IP Phone

You can view the system status of your phone via phone user interface or web user

interface.

Available information of phone status includes:

 Network status including WAN port and LAN port information.

 Phone status including device model, firmware version and MAC address.

 Account status indicating 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 click Enter.

3. Enter the User Name (admin) and Password (admin) in the pop-up dialogue box.

4. Click OK to log in.

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

static IP address manually.

To configure a static IP address via phone user interface:

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

Port->Static IP Client.

Note

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 about these parameters, contact your system administrator.

Getting Started

2. Enter the parameters IP, subnet mask, default gateway, primary DNS, second DNS

in the corresponding fields.

3. 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 to 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 41.

If the phone has successfully started up, the idle screen will appear on the phone LCD

screen as shown below.

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

User Guide SIP-T28P IP Phone

Customizing Your Phone

You can customize your SIP-T28P IP phone by configuring the setting for time and date,

display contrast, and ring tones, for example. You can add contacts to the phone’s local

directory manually or from call history. You can also handle incoming calls from different

contacts in different ways.

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

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->Advanced Settings (password: admin) ->Phone

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.

You can also configure contrast via web user interface at the path Phone->Preference.

User Guide SIP-T28P IP Phone

Backlight Level means the backlight intensity.

You can configure the backlight status on the LCD screen as the following types:

 Always off: Backlight is turned off completely.

 Always on: Backlight is on permanently.

 On (duration): Backlight is turned off when the phone is inactive for approximately

15seconds, 30seconds, 60seconds or 120seconds.

To configure the backlight via phone user interface:

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

Settings->Backlight.

Note

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

Backlight Level field.

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

Backlight Time field.

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

You can also configure the backlight via web user interface at the path

Phone->Preference.

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

Not all 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 about the available languages of your new phone.

use the same language as which of your internet browser for the web user interface, if

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

interface will use English by default. You can change the language for the phone user

interface and the web user interface respectively from each other.

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.

Customizing Your Phone

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

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

To change the language for the web user interface:

1. Click on Phone->Preference.

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

3. Click Confirm to accept the change.

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

The time and date appears on the LCD screen of the SIP-T28P IP phone. If the phone

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

contact your system administrator for more information. You can configure the phone to

obtain the time and date from SNTP server automatically, or configure the time and

date manually.

User Guide SIP-T28P IP Phone

Please refer to Appendix A - Time Zones for the list of available time zones on the IP phone.

To configure the SNTP settings via phone user interface:

1. Press Menu->Settings->Basic Settings->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 Server1 and NTP Server2 fields,

respectively.

4. Press or , or the Switch soft key to select Automatic from the Daylight

Saving field.

Note

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 and Time.

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

The time that appears 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.

Customizing Your Phone

Date Format

Example(2011-8-17)

WWW MMM DD

Wed Aug 17

DD-MMM-YY

17-Aug-11

YYYY-MM-DD

2011-08-17

DD/MM/YYYY

17/08/2011

MM/DD/YY

08/17/11

DD MMM YYYY

17 Aug 2011

WWW DD MMM

Wed 17 Aug

2. Press or , or the Switch soft key to select the desired time format(12 hour or

24 hour) 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, the date format "WWW DD MMM",

"WWW" represents the first three letters of the week, "DD" represents two-digit of the

date, and "MMM" represents the first three letters of the month.

The date formats you need to know:

You can also configure the time and date settings via web user interface at the path

Phone->Preference.

User Guide SIP-T28P IP Phone

The emergency number setting, if desired, must be made before lock activation. For more information, refer to Emergency Number on page 46.

You can set the "#" or "*" to perform as a send key while dialing a call.

To set the 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.

You can also configure key as send via web user interface at the path Phone->Features.

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

feature helps you to protect your phone from unauthorized use.

This feature allows you to perform the following:

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

phone until unlocked.

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

CONF, HOLD, MUTE, TRAN, OK, X, navigation keys, Volume key,

soft keys, line keys and memory keys until unlocked.

All Keys: All keys are locked. You are only allowed to dial emergency

numbers, answer incoming calls by lifting the handset, pressing

the Speakerphone key or pressing the HEADSET key.

Lock&Answer: All keys are locked, except the Menu soft key and the HEADSET

key. Incoming calls will be answered automatically, but cannot

be ended by your party. The previous conversation is placed on

hold.

Note

Customizing Your Phone

The default password for unlock is admin.

To activate the keypad lock via phone user interface:

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

Settings->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 activate the keypad lock.

The icon appears on the LCD screen. If the keypad lock feature is activated to

be Lock&Answer, an additional icon will appear on the LCD screen.

Note

To deactivate the keypad lock via phone user interface:

1. Press the Menu soft key, the LCD screen prompts for the password.

2. Enter the password (admin).

3. Press the Confirm soft key to deactivate the keypad lock.

The icon disappears from the LCD screen. If you want to deactivate the keypad

lock type of Lock&Answer, you should press Menu-> Settings->Advanced Settings

(password: admin) ->Phone Settings-> Keypad Lock, and then select Disable from

the Keypad Lock field.

You can also activate or deactivate the keypad lock via web user interface at the path

Phone->Preference.

User Guide SIP-T28P IP Phone

You can press the Volume key to adjust the receiver volume of currently used audio

devices (handset, speakerphone or headset), when the phone is in the dialing interface

or during a call. You can also press the Volume key to adjust the ringer volume when the

phone is idle.

To adjust the volume via phone user interface:

1. Press Menu->Settings->Basic Settings->Phone Volume.

2. Select the Handset Volume, Speaker Volume, Headset Volume or Ringer Volume,

and then press the Enter soft key.

3. Press , or to adjust the volume.

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

Note

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

distinguish the accounts or to distinguish your phone from your neighbor’s.

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

1. Press Menu->Settings->Basic Settings->Ring Tones.

Customizing Your Phone

The ring tone for an incoming call on the phone may be different. For example, when the phone receives an incoming call from a contact stored in the local directory, it will play the ring tone assigned to the contact in the contact directory (refer to Adding Contacts in the Contact Management section). Otherwise, the phone will play the ring tone assigned to the account. If both the contact ring tone and the account ring tone are not assigned, then the phone will play the ring tone assigned for the phone.

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.

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

1. Click on Phone->Preference.

2. Select the desired ring tone from the pull-down list of Ring Tones.

3. Click Confirm to accept the change.

Note

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

If common is selected, this account will use the ring tone selected for the phone at

Phone->Preference. Refer to the above instruction.

4. Click Confirm to accept the change.

You can also upload custom ring tones for your phone, contact your system

administrator for more information.

This section provides the operating instructions for managing contacts. The topics

include:

 Local Directory

 Blacklist

 Remote Phonebook

User Guide SIP-T28P IP Phone

If the contact has existed in the directory, the LCD screen will prompt “Existed in Contacts!”.

The built-in phone directory stores the names and phone numbers of your contacts. You

can store up to 300 contacts in your phone's local directory. You can add, edit, delete or

search for a contact in the local directory. You can also dial a contact from the local

directory.

You can add contacts to your local directory in the following ways:

 Manually

 From call history

 From remote phonebook

Adding Contacts Manually

To add a contact to the local directory manually:

1. Press Directory->Local Directory.

2. Select the desired contact group (For example, select Contacts).

3. Press the Add soft key.

4. Enter the Name and the Office, Mobile or Other numbers.

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

Account field. If Auto is selected, the phone will use the first available account when

placing calls to the contact from the local directory.

6. Press or , or the Switch soft key to select the desired ring tone from the Ring

Tones field.

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

Note

Customizing Your Phone

Adding Contacts from Call History

To add a contact to the local directory from the call history:

1. Press the History soft key.

2. Press or to highlight the desired entry.

3. Press the Option soft key, and then select Add to Contacts from the prompt list.

4. Enter the contact name.

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

The entry is successfully saved in the local directory.

Adding Contacts from remote phonebook

To add a contact to the local directory from the remote phonebook:

1. Press Directory->Remote Phonebook.

2. Press or to highlight the desired entry.

3. Press the Option soft key, and then select Move to Contacts from the prompt list.

4. Press the Save soft key to save the contact in the local directory.

If the contact has already existed in the local directory, the LCD screen will prompt

"Overwrite the original contact?". Press the OK soft key to overwrite the original

contact in the local directory or the Cancel soft key to cancel.

For more information on remote phonebook operating, refer to Remote Phonebook on

page 32.

To edit a contact in the local directory:

1. Press Directory->Local Directory->Contacts.

2. Press or to highlight the desired contact.

User Guide SIP-T28P IP Phone

3. Press the Option soft key, and then select Detail from the prompt list.

4. Press or to highlight the contact information and then edit.

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

To delete a contact from the local directory:

1. Press Directory->Local Directory->Contacts.

2. Press or to highlight the desired contact.

3. Press the Option soft key, and then select Delete from the prompt list.

The LCD screen prompts the following warning:

4. Press the OK soft key to confirm the deleting or the Cancel soft key to cancel.

To place a call to a contact from the local directory:

1. Press Directory->Local Directory.

2. Select the desired contact group.

3. Press or to highlight the desired contact.

4. Press the Dial soft key.

Customizing Your Phone

To search for a contact in the local directory:

1. Press Directory->Local Directory.

2. Press the Search soft key.

3. Enter a few continuous characters of the contact name or continuous numbers of the

contact phone number using the keypad.

4. Press the OK soft key.

The contacts whose name or phone number matches the characters entered will

appear on the LCD screen. You can dial from the result list.

You can manage your phone’s local directory via phone or web user interface. But you

can only import or export the contact list via web user interface.

To import an XML file of contact list via web user interface:

1. Click on Contacts->Local Directory.

2. Click Browse to select a contact list file (file format must be .xml) from your local

system.

3. Click Import XML to import the contact list.

The web user interface prompts "The original contact will be covered, continue?".

4. Click OK to complete importing the contact list.

To import a CSV file of contact list via web user interface:

1. Click on Contacts->Local Directory.

2. Click Browse to select a contact list file (file format must be .csv) from your local

system.

3. Click Import CSV to import the contact list.

You can then select whether to delete all old contacts while importing the contact

list, and select the contact information you want to import into the local directory.

Such as contact name, office number or mobile number.

4. Click Import to complete importing the contact list.

User Guide SIP-T28P IP Phone

To export a contact list via web user interface:

1. Click on Contacts->Local Directory.

2. Click Export XML (or Export CSV).

3. Click Save to save the contact list to your local system.

The built-in phone directory stores the names and phone numbers of the blacklist. You

can store up to 30 contacts in your phone’s blacklist directory. You can add, edit, delete

or search for a contact in the blacklist directory. You can also dial a contact in the

blacklist directory, but an incoming call from the blacklist directory will be rejected

automatically.

Operating instructions of adding blacklists, editing blacklists, deleting blacklists, placing

call to blacklists and searching for contact in the blacklist, refer to the operating

instructions of Local Directory on page 28.

You can access your corporate directory through your phone. You can add contacts

from the corporate directory to your local directory. You can also dial a contact from the

corporate directory.

You can configure your new phone to access up to 5 corporate directories. Contact your

system administrator for the access URL of the corporate directory.

To configure an access URL for remote phonebook via web user interface:

1. Click on Contacts->Remote PhoneBook.

2. Enter the access URL in the Phone Book Url field.

3. Enter the name in the Phone Book Name field.

4. Click Confirm to accept the change.

To access your corporate directory via phone user interface:

1. Press Directory->Remote Phonebook.

2. Select the desired remote group, and then press the Enter soft key.

Customizing Your Phone

The phone connects to load the corporate directory, and then displays the

corporate contact list on the LCD screen.

3. Press the Cancel soft key to back to the previous interface or the Back soft key to

disconnect.

To place a call from the corporate directory:

1. Press Directory->Remote Phonebook.

2. Select the desired remote group, and then press the Enter soft key to load the

corporate directory.

3. Select the desired contact in the corporate directory.

4. Press the Dial soft key.

In addition, you can enable the phone to present the caller identity stored in the

corporate directory when receiving a call.

To enable the presentation of caller identity stored in the remote phonebook:

1. Click on Phone-> Features.

2. Select Enabled from the pull-down list of SRemoteName.

3. Enter the refresh period of corporate directory in the SRemoteNameFlashTime field.

The default value is 3600 seconds.

4. Click Confirm to accept the change.

The SIP-T28P IP phone maintains call history lists of Dialed Calls, Received Calls, Missed

Calls and Forwarded Calls. The call history list supports up to 100 entries in all. You can

check the call history, dial a call, add a contact or delete an entry from the call history

list.

To check the call history:

1. Press the History soft key.

The LCD screen displays All Calls list.

2. Press or to switch between All Calls, Dialed Calls, Received Calls, Missed

Calls and Forwarded Calls.

User Guide SIP-T28P IP Phone

3. Press or to select the desired entry.

4. Press the Option soft key, and then select Detail from the prompt list.

The detailed information of the entry appears on the LCD screen.

To dial a call from the call history list:

1. Press the History soft key.

2. Press or to switch between All Calls, Dialed Calls, Received Calls, Missed

Calls and Forwarded Calls.

3. Press or to select the desired entry.

4. Press the Send soft key.

To add a contact from the call history list:

1. Press the History soft key.

2. Press or to switch between All Calls, Dialed Calls, Received Calls, Missed

Calls and Forwarded Calls.

3. Press or to select the desired entry.

4. Press the Option soft key, and then select Add to Contacts (or Add to Blacklist) from

the prompt list.

For more information, refer to Contact Management on page 27.

To delete an entry from the call history list:

1. Press the History soft key.

2. Press or to switch between All Calls, Dialed Calls, Received Calls, Missed

Calls and Forwarded Calls.

3. Press or to select the desired entry.

4. Press the Delete soft key.

To delete all entries from the call history list:

1. Press the History soft key.

2. Press or to switch between All Calls, Dialed Calls, Received Calls, Missed

Calls and Forwarded Calls

3. Press the Option soft key, and then select Delete All from the prompt list.

4. Press the OK soft key.

The LCD screen prompts "Delete all records?".

5. Press the OK soft key to confirm the deleting or the Cancel soft key to cancel.

Customizing Your Phone

The logo file format must be “.dob”, contact your system administrator for more information.

You can upload your custom logo which will be shown on the idle screen.

To upload a custom logo via web user interface:

1. Click on Phone->Features.

2. Select Custom Logo from the pull-down list of Use Logo.

3. Click Browse to select the logo file from your local system.

4. Click Upload to upload the file.

5. Click Confirm to accept the change.

6. Reboot the phone, the custom logo will be shown on the LCD screen after rebooting.

Note

Physically connect your headset, refer to Phone Installation on page 13 and

activate/deactivate it for use.

To activate the headset mode:

1. Press on the phone.

The HEADSET key LED illuminates solid green indicates that the headset mode is

activated. Press the line key or the Answer soft key to receive a call, the call will connect

to your headset automatically.

To deactivate the headset mode:

1. Press again on the phone.

The HEADSET key LED turns off when the headset mode is deactivated.

You can use headset in priority when enabling the headset prior feature. This feature is

especially useful for permanent or full-time headset users.

User Guide SIP-T28P IP Phone

If headset prior feature is enabled, the headset mode will not be deactivated until you press the HEADSET key again.

To enable Headset Prior via web user interface:

1. Click on Phone->Features.

2. Select Enabled from the pull-down list of Headset Prior.

3. Click Confirm to accept the change.

To use headset prior, you should activate the headset mode in advance:

1. Physically connect the headset.

2. Press to activate the headset mode.

Note

You can use two headsets when enabling the dual headset feature. To use this feature,

you must physically connect headsets both to the headset jack and handset jack

respectively. Once the phone joins in a call, people with the headset connected to the

headset jack has a full-duplex conversation, another people with the headset

connected to the handset jack is only allowed to listen to.

To enable Dual Headset via web user interface:

1. Click on Phone->Features.

2. Select Enabled from the pull-down list of Dual Headset.

3. Click Confirm to accept the change.

There are three types of DSS keys: Memory Keys, Line Keys and Programmable Keys.

The details will be introduced as following. The use of line keys and memory keys are

almost the same. The SIP-T28P IP phone supports 10 memory keys and 6 line keys.

You can assign predefined functionalities to the memory keys located on the right of the

phone. Memory keys allow you to use quick access features such as Call Return and

Voice Mail. The memory keys LED will indicate the monitoring status when the keys are

assigned specific features, such as BLF and Shared Line. The default key type of each

memory key is N/A, which indicates that this memory key provides no functionality.

To configure the memory key via phone user interface:

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

2. Select the desired memory key, and then press the Enter soft key.

Customizing Your Phone

3. Select the desired key type from the Type field.

4. (Optional.) Select the desired key event type from the Key Type field.

5. (Optional.) Select the desired line from the Account ID field.

6. (Optional.) Enter the corresponding value in the Value field.

7. (Optional.) Enter the corresponding value in the Extension field.

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

You can also configure the memory key via web user interface at the path Phone->DSS

Keys->Memory Keys.

The memory key features are explained in the following subchapters in detail:

 Line

 Speed Dial

 DTMF

 Prefix

 Conference

 Forward

 Transfer

 Hold

 DND

 Redial

 SMS

 Group Listening

For more information, contact your system administrator.

Line

You can use this key feature to accept the incoming calls, place active calls on hold or

resume a held call. It performs the same as a hard line key.

Dependencies:

Type (Line)

Account ID (the account this feature will be applied to)

Usage: When receiving an incoming call, the DSS key LED flashes green:

1. Press the DSS key to accept the incoming call.

2. Press the DSS key to place the active call on hold.

3. Press the DSS key again to resume the held call.

If Auto is selected from the Account ID field, press the DSS key when the phone is idle,

you can then dial out using the first registered account.

Speed Dial

You can use this key feature to speed up dialing the numbers often used or hard to

remember.

User Guide SIP-T28P IP Phone

DTMF sequence is allowed to be: "0-9", "*", "#" and "A-D".

When leaving the Value field blank, the DSS key performs the same as the CONF key or the Conf soft key during a call.

Note

Dependencies:

Type (Speed Dial)

Value (the number you want to dial out)

Account ID (the account this feature will be applied to)

Usage: Press the DSS key to dial out the number specified in the Value field, using the

account selected from the Account ID field.

DTMF

You can use this key feature to send the specification of arbitrary key sequences via

DTMF.

Dependencies:

Type (Key Event)

Key Type (DTMF)

Value (DTMF sequence)

Usage: Press the DSS key during an active call to send the key sequence specified in the

Value field.

Prefix

You can use this key feature to dial a call with a specified prefix number.

Dependencies:

Type (Key Event)

Key Type (Prefix)

Value (the prefix number)

Usage: Press the DSS key when the phone is idle, the phone will be ready to make a

new call and show up the prefix number which you specified in the Value field, enter

other digits and then dial out.

Conference

You can use this key feature to set up a conference call. For more information, refer to

Conference on page 59.

Dependencies:

Type (Key Event)

Key Type (Conf)

Value (the number you want to add to the conference)

Usage: Press the DSS key during an active call to set up a conference with the number

specified in the Value field.

Note

Customizing Your Phone

When leaving the Value field blank, the DSS key performs the same as the TRAN key or the Transfer soft key during a call.

When leaving the Value field blank, the DSS key performs the same as the Forward soft key when receiving an incoming call.

Forward

You can use this key feature to forward an incoming call to someone else. For more

information, refer to Call Forward on page 55.

Note

Dependencies:

Ty pe (Key Event)

Key Type (Forward)

Value (the number you want to forward to)

Usage: Press the DSS key to forward an incoming call to the number specified in the

Value field.

Transfer

You can use this key feature to perform a Blind/Attended/Semi-Attended Transfer during

a call. For more information, refer to Call Transfer on page 58.

Dependencies:

Type (Key Event)

Key Type (Transfer)

Value (the number you want to transfer to)

Usage: Press the DSS key during a call to transfer the call to the number specified in the

Value field.

Note

Hold

You can use this key feature to place an active call on hold or retrieve a held call.

Dependencies:

Usage:

1. Press the DSS key during an active call to place the call on hold.

2. Press the DSS key again to retrieve the held call.

DND

You can use this key feature to activate or deactivate the DND mode.

Dependencies:

Usage:

Type (Key Event)

Key Type (Hold)

Type (Key Event)

Key Type (DND)

1. Press the DSS key to activate the DND mode.

User Guide SIP-T28P IP Phone

When the DND mode is activated, all incoming calls will be rejected automatically.

2. Press the DSS key again to deactivate the DND mode.

Note

Redial

You can use this key feature to access the Dialed Calls list. Press the DSS key when the

phone is idle, then you can select an entry to redial.

Dependencies:

Usage:

1. Press the DSS key when the phone is idle to access the dialed calls list.

2. Select an entry and press the DSS key again to redial the call.

SMS

You can use this key feature to quick access the text message feature. For more

information, refer to Short Message Service (SMS) on page 82.

Dependencies:

Usage: Press the DSS key when the phone is idle to access the text message feature.

Group Listening

You can use this key feature to activate the Speakerphone and Handset/Headset mode

at the same time. It is suitable for the group conversation which has more than one

person at one side. You are able to speak and listen through the handset/headset,

meanwhile the others nearby can only listen through the speaker.

Type (Key Event)

Key Type (Redial)

Type (Key Event)

Key Type (SMS)

Dependencies:

Type (Key Event)

Key Type (Group Listening)

Usage:

1. During a call, press the DSS key to activate group listening mode.

You can then speak and listen through the handset/headset, other people at your

side can listen through speaker at the same time.

2. Press the DSS key again to deactivate group listening mode.

You can assign predefined functionalities to the line keys. You can also define a label for

the line key feature which will appear on the LCD screen. The default key type of each

line key is Line.

To configure the line key via phone user interface:

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

Customizing Your Phone

You can configure the programmable keys via web user interface only.

2. Select the desired line key, and then press the Enter soft key.

3. Select the desired key type from Type field.

4. (Optional.) Select the desired key event type from the key type field.

5. (Optional.) Select the desired line from the Account ID field.

6. (Optional.) Enter the string that will appear on the LCD screen in the Label field.

7. (Optional.) Enter the corresponding value in the Value field.

8. (Optional.) Enter the corresponding value in the Extension field.

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

You can also configure the line key via web user interface at the path Phone->DSS

Keys->Line Keys.

For more information on using the line keys, refer to Memory Keys introduced above.

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

Note

To customize the programmable keys via web user interface:

1. Click on Phone->DSS Keys->Programmable Keys.

2. Customize specific features for these keys.

3. Click Confirm to accept the change.

You can register one or multiple accounts on the SIP-T28P IP phone. You can also

configure each line key associated with an account or configure multiple line keys

associated 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 Label, Display Name, Register Name, User Name, Password and SIP

Server 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.

6. Repeat steps 2 to 5 until you have registered all accounts.

User Guide SIP-T28P IP Phone

The following figures show single or multiple accounts registered on the phone:

Single account:

Multiple 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.

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

You can also register or disable an account via web user interface at the path

Account->Basic.

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

visualization and simplifies call handling. If this is the case, the LCD screen could

resemble the following figure:

Customizing Your Phone

The dot "." can be used as a placeholder or multiple placeholders for any

character. Example:

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

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", etc.

()

The parentheses "( )"can be used to group together patterns, for instance, to

logically combine two or more patterns. Example:

"([1-9])([2-7])3" would match "923", "153", "773", etc.

Followed by the sequence number of a pattern. Example:

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

enter "95123" to dial out on your phone, the number will be replaced as "5123"

and then dialed out.

You can configure the dial plan rules via web user interface only.

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

Similarly, outgoing calls will be distributed.

Your phone can be configured to have a combination of lines with a single line key and

lines with multiple line keys.

Dial plan is a string of characters that governs the way your SIP-T28P IP phone processes

the inputs received from your phone keypad. The SIP-T28P IP phone supports the

following dial plan features:

 Replace Rule

 Dial-now

 Area Code

 Block Out

Note

The basic expression syntax you need to know:

You can configure one or more replace rules to remove the specified string and replace

it with another string. You can configure a pattern with wildcards (expression syntax

refer to the table above), so that any string that matches the pattern will be replaced.

This feature is designed for convenience when you try to dial out a number. For example,

a replace rule is configured as "Prefix: 1" and "Replace: 1234567", then when you try to

User Guide SIP-T28P IP Phone

The valid value of Account field can be one or more digits among 1, 2, 3, 4, 5 and 6. Each digit must be separated by a “,”. 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 an invalid value, then the replace rule will apply to all accounts.

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 Phone->Dial Plan->Replace Rule.

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

3. Enter the string (e.g. 12345) 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.

When you enter the number “234” using the keypad and then dial out, the phone

will dial out “12345” instead.

Note

To edit a replace rule via web user interface:

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

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

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

You can configure one or more dial-now rules 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 entering any three-digit string

begins with 2 will be dialed out automatically on the phone.

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

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

2. Enter the desired value (e.g. 1234) in the Dial-now Rule field.

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

Note

The default values of minimum and maximum length are 1 and 15 respectively.

You can also edit or delete the dial-now rule, refer to Replace Rule on page 43 for more information.

Customizing Your Phone

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.

Time Out for Dial-now Rule

You can configure the interval for dial-now rules. That is, you can configure your phone

to dial out the phone number, which matches a dial-now rule, in a fixed time.

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

1. Click on Phone->Features.

2. Enter the time within 0-14 (in seconds) in the Time Out for Dial-now Rule field.

3. Click Confirm to accept the change.

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 outside the

code area. For example, area code is configured as "Code: 011, Min Length: 4, Max

Length: 11", then when you dial out the number "56789", the phone will add the area

code and dial out the number "01156789".

To configure the area code and lengths via web user interface:

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

2. Enter the desired values in the Code, Min Length and Max Length fields.

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

4. Click Confirm to accept the change.

Note

You can block the dialing of specific numbers. When you dial a block out number on

your phone, the dialing will fail and the LCD screen will prompt "Forbidden Number".

To add a block out number via web user interface:

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

2. Enter the desired value in the Block Out Number field.

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

4. Click Add to add the block out number.

User Guide SIP-T28P IP Phone

The default delay time of live dialpad feature is 4s.

You can configure live dialpad via web user interface only.

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

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 required. 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 a different emergency

number for each of the different emergency services.

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

emergency services in an emergency situation.

Note

To specify emergency numbers via web user interface:

Note

1. Click on Phone->Features.

2. Enter the emergency services number in the Emergency field. For multiple numbers,

enter a "," between each emergency number (Default value for this field is blank).

3. Click Confirm to accept the change.

You can enable the live dialpad feature on the SIP-T28P IP phone, which enables the IP

phone to automatically dial out the phone number without pressing any other key. You

can also configure a period of time before automatically dialing out the phone number.

To enable the live dialpad via web user interface:

1. Click on Phone->Preference.

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

3. Enter the desired delay time (0~14s) in the Inter Digit Time field.

4. Click Confirm to accept the change.

Customizing Your Phone

You can dial a hotline number immediately once you lift the handset, press the

speakerphone key or press a line key. You can also configure to dial out the hotline

number in a period of time, the phone will dial out the hotline number automatically

after the specified delay time.

To configure the hot line number via phone user interface:

1. Press Menu->Features->Hot Line.

2. Enter the desired number in the Number field.

3. Enter the delay time (seconds) in the HotLine Delay field.

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

You can also configure hot line via web user interface at the path Phone->Features.

User Guide SIP-T28P IP Phone

Basic Call Features

The SIP-T28P 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-T28P IP phone. The topics

include:

 Placing Calls

 Answering Calls

 Ending Calls

 Redialing Numbers

 Call Return

 Call Mute

 Call Hold/Resume

 Do Not Disturb (DND)

 Call Forward

 Call Transfer

 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-T28P IP phone:

 Using the handset

 Using the speakerphone

 Using the headset

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

other party.

You can search the call history, the local contact directory or the remote phonebook and

User Guide SIP-T28P IP Phone

You can also dial using the SIP URI or IP address. To obtain the IP address of your phone, press the OK key. The maximum SIP URI or IP address length is 32 characters. For example, 192.168.1.15, sip:2210@sip.com.

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

dial from the search results. For more information, refer to Contact Management on

page 27 and Call History Management on page 33.

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

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

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

to the number”7890” has lasted 1 minute and 15 seconds.

To place a call using the handset:

Note

1. Pick up the handset.

2. Enter the desired number using the keypad.

3. Press , , or the Send soft key.

By default, the # key is set as a send key. You can set the * key as send key or set neither

of them as send keys. For more information, refer to the Key as Send on page 24.

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.

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.

Note

To permanently enable your headset, refer to Headset Prior on page 35.

You can ignore incoming calls by pressing the X key, 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 55.

You can forward incoming calls to someone else by pressing the Forward soft key. For more information, refer to Call Forward on page 55.

Basic Call Features

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.

To place multiple calls:

You can have more than one call on your SIP-T28P 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.

Note

Press , , or the Send soft key.

- Press or 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

Answering When Not in Another Call

In all cases, the active call will appear on the LCD screen showing call duration and

destination.

User Guide SIP-T28P IP Phone

To end a call placed on hold, you can press the Cancel soft key to end the call directly, or press the Resume soft key to resume the call before ending it.

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 the headset mode deactivated, press the Answer

soft key.

- With the handset on-hook and the 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 a headset, press the Cancel soft key.

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

Note

Basic Call Features

To redial the last placed call from your phone:

1. Press twice.

A call to your last placed call is attempted.

To redial a previously placed call from your phone:

1. Press when the phone is idle.

2. Press or to select the desired entry from the dialed calls list, and then press

or the Send soft key.

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->Memory Keys (or Line 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.

You can also configure a call return key via web user interface at the path Phone->DSS

Keys.

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

other party cannot hear you.

To mute a call:

1. Press during an active call.

User Guide SIP-T28P IP Phone

The phone will beep softly every 30 seconds to remind you that you still have a call on hold.

The phone 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. At any time, at most one active call can be in

progress on your phone, other calls can be received and made while placing the

original call on hold. When placing a call on hold, your IP PBX might play a melody or

message to the other party while waiting.

Note

To place a call on hold:

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

The phone LCD screen shows the call is on hold and the line key LED flashes green.

To resume a held call:

1. Press or the Resume soft key.

Multiple Calls on Hold:

If multiple calls are placed on hold, press or to switch between the calls, and

then press the Resume soft key to retrieve the desired call.

Basic Call Features

The Do Not Disturb feature is local to the phone, and may be overridden by the server settings. For more information, contact your system administrator.

If more than two calls are on hold, an indication appears on the LCD screen, for

example "2/4", indicating that this is the second call out of four calls.

If multiple calls are on hold on more than one line keys, you can view the details of the

calls by pressing the corresponding line key, and then press the Resume soft key to

retrieve the call.

You can enable or disable the Do Not Disturb (DND) mode on the phone. If DND mode is

enabled, the phone will reject all incoming calls automatically, and the callers will hear

a busy signal or a message, depending on how your system administrator set up the

configuration server.

To activate DND mode on the SIP-T28P IP phone:

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

The icon on the idle screen indicates that the Do Not Disturb mode is enabled.

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

the number of the missed call) will prompt on the LCD screen.

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 rings, refer to the Dynamic

Forwarding.

Static Forwarding

To enable call forward:

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

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

soft key. The options are:

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 of time.

3. Depending on your selection:

a.) If you select Always Forward:

User Guide SIP-T28P IP Phone

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 always off code

respectively in the On Code or Off Code field.

b.) If you selected 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 busy off code

respectively in the On Code or Off Code field.

c.) If you selected 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

before forwarding in the After Ring Time field (The default ring time is

60 seconds).

Basic Call Features

You can also enter the SIP URL or IP address in the Forward to field. For more information on using the SIP URL or IP address, refer to Placing Calls on page 49.

Call forward feature 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.

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 the call forward is enabled.

You can also configure forward feature via web user interface at the path

Phone->Features.

Note

To disable call forward:

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 , or the Switch soft key to select Disable to disable the call

forward.

Dynamic Forwarding

To forward an incoming call to another party:

1. When the phone rings, press the Forward soft key.

User Guide SIP-T28P IP Phone

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

3. Press , , or the Send soft key.

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 Transfer soft key during a call.

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

3. Press or the Transfer soft key to complete the transfer.

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

To perform a semi-attended transfer:

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

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

3. Press or to dial out.

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

ringback.

Basic Call Features

The network conference feature is not available on all servers. For more information, contact your system administrator.

To perform an attended transfer:

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

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

3. Press or to dial out.

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

transfer.

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

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

You can create a conference with other parties using the phone’s local conference

feature. You can create a conference between an active call and a call on hold (on the

same or another line) by pressing the CONF key or the Conf soft key. The network

conference feature allows you to add and remove specific conference parties.

Note

The SIP-T28P IP phone supports up to 3 parties (including yourself) in a conference call.

This is called Local Conference and is the default method of conference.

To set up a local conference call:

1. Place a call to the first party.

2. Press or the Conf soft key to create 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 or the Conf soft key again to join all parties in the conference.

User Guide SIP-T28P IP Phone

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 or the Conf soft key to join the two calls in the conference on account 1.

You can press or 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 feature on the SIP-T28P 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.

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

advance, and configure the phone via web user interface:

1. Click on Account->Advanced.

2. Select the desired conference type from the pull-down list of Conference Type.

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

field.

4. Click Confirm to accept the change.

To set up a network conference call:

1. Place a call to the first party.

2. Press or the Conf soft key to create 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 or the Conf soft key to add the

second party to the conference.

5. Press the Conf soft key to create 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.

7. When the new party answers the call, press or the Conf soft key to add the

new party to the conference.

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

Note

Call Park feature is not available on all servers. Contact your system administrator for more information.

Basic Call Features

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 feature 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 indication on the LCD screen. When the call is parked successfully,

someone can retrieve the parked call on another phone.

To configure a call park key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line 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 feature code (contact your system administrator for it) in the

Value field.

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

You can also configure a call park key via web user interface at the path Phone->DSS

Keys.

To use the Call Park feature:

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.

User Guide SIP-T28P IP Phone

The call park feature code and call park extension are predefined on the system server. Contact the system administrator for more information.

If the parked call is not retrieved within a period 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 the pickup key on the phone will pick up the call that rings first.

3. (Optional.)The SIP Server sends the first available call park extension (e.g.150), will

appear on the LCD screen of phone A.

4. The user on phone A walks to an available conference room where the phone is

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

extension (e.g. 150)) to retrieve the parked call.

The system establishes call between phone C and B.

Note

You can press a pickup key to answer someone else’s incoming call on the phone. The

SIP-T28P IP phone supports the directed call pickup and group call pickup features.

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.

Note

Directed Call Pickup

To configure a pickup key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory keys (or Line 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 Pick Up from the Key Type field.

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

ID field.

Basic Call Features

6. Enter the pickup code followed by the specific phone number you want to pick up in

the Value field.

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

You can also configure a direct pickup key via web user interface at the path

Phone->DSS Keys.

To pick up a call directly:

1. Press the pickup key on your phone when the specific phone number receives an

incoming call.

The call is answered on your phone.

Group Call Pickup

To configure a group pickup key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line 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 Group Pick Up 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 group pickup feature code in the Value field.

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

You can also configure a group pickup key via web user interface at the path

Phone->DSS Keys.

To pick up a call in the group:

1. Press the group pickup key on your phone when a phone number in the group

receives an incoming call.

The call is answered on your phone.

User Guide SIP-T28P IP Phone

The anonymous call feature is not available on all servers. Contact your system administrator for the anonymous call on code and off code.

You can use anonymous call feature 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 you don’t want to be harassed.

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 , or the Switch soft key 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.

You can also configure anonymous call 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.

Basic Call Features

You can use anonymous call rejection feature 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.

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.

You can also configure anonymous call rejection via web user interface at the path

Account->Basic.

User Guide SIP-T28P IP Phone

Advanced Phone Features

This chapter provides operating instructions for the advanced features of the SIP-T28P IP

phone. The topics include:

 Busy Lamp Field (BLF)

 BLF List

 Shared Line

 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 the BLF feature to monitor a specific user for status changes on the phone.

For example, you can configure a BLF key on the phone for monitoring the status of a

friend’s phone (busy or idle). When the friend picks up his phone to make a call, the BLF

key (memory key) LED illuminates solid red on your phone to indicate that the friend’s

phone is in use and busy. For more BLF key LED indications, refer to LED Instructions on

page 5.

You can press a BLF key to dial out the monitored user when he is in idle. You can also

pick up a call directly by pressing the BLF key when the monitored user is ringing. For

more information, contact your system administrator.

To configure a BLF key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).

2. Select the desired DSS key.

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

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.

User Guide SIP-T28P IP Phone

For more information about the BLF List pickup and BLF List barge in feature, contact your system administrator.

You can configure the BLF List settings via web user interface only.

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.

You can also configure the BLF key via web user interface at the path Phone->DSS Keys.

You can use the BLF List feature to monitor a list of users defined by your system

administrator. For example, your system administrator enables BLF List, and creates a

BLF List URI (e.g., BLFList@example.com) including a list of user1, user2 and user3 on the

server. You can configure BLF List keys on the phone to monitor the status changes of

user1, user2 and user3. The key LEDs illuminate either flashing or solid depending on the

status of those users. For more BLF List key LED indications, refer to LED Instructions on

page 5.

Note

You can use the BLF List keys in the following ways:

 When the monitored user is in idle, press the BLF List key to dial out the phone

number.

 When the monitored user is ringing, press the BLF List key to pick up the call directly.

 When there is a conversation on the monitored user, press the BLF List key to barge

in and set up a conference call.

To configure the BLF List settings via web user interface:

1. Click on Account.

2. Select the desired account from the Account field.

3. Click on Advanced.

4. Enter the BLF List URI in the BLF List URI field.

5. (Optional.) Enter the BLF pickup code in the BLF List Code field.

6. (Optional.) Enter the BLF barge in code in the BLFListBargeInCode field.

7. Click Confirm to accept the change.

Advanced Phone Features

The shared Line feature is not available on all servers. For more information, contact your system administrator.

To assign BLF List keys via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).

2. Select the desired DSS key.

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

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

ID field.

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

6. Repeat steps 2 to 5 to configure more BLF List keys.

You can also configure the BLF List key via web user interface at the path Phone->DSS

Keys.

After the above configurations, according to the response message from the BLF List

server, the IP phone will automatically assign the phone number of the BLF List users to

the BLF List keys in order.

Shared line is configured by assigning the same extension number to multiple lines. You

can use the shared line feature to share an extension number which is used on two or

more IP phones at the same time. An incoming call to that number will cause all phones

to ring simultaneously. The incoming call can be answered on one of the phones but not

all of them. This feature is very useful in the boss and secretary scenario. For example,

the secretary can share the boss' extension number by configuring a shared line key on

her phone. When there is an incoming call to the extension number of the boss, both the

phones of the boss and the secretary will ring simultaneously. Either the boss or the

secretary can answer the call. Calls on shared line can be placed on hold or barged in.

Note

To place a call on public hold:

1. Press , the shared line key or the Hold soft key when there is an active call on

the shared line.

User Guide SIP-T28P IP Phone

The private held call can be only retrieved by the hold party.

If the call is placed on private hold, and you attempt to pick up the call by pressing the shared line key, the retrieve will fail and the LCD screen will prompt “Forbidden”.

To retrieve a call placed on public hold:

1. Press the shared line key on any phone when there is a public held call on the

shared line.

The shared line key LED illuminates flashing when the shared line call is placed on

public hold. For more Shared Line key LED indications, refer to LED Instructions on page

To place the call on private hold, you should configure a private hold key in advance:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line 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 Private Hold from the Key Type

field.

Note

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

You can also configure a private hold key via web user interface at the path

Phone->DSS Keys.

To place a call on private hold:

1. Press the private hold key when there is an active call on the shared line.

To barge in a shared line call:

1. Press the shared line key on any other phone when there is an active call on the

shared line.

For more shared line key LED instructions, refer to LED Instructions on page 5.

Note

The record feature is not available on all servers. Contact your system administrator for more information.

Advanced Phone Features

You can record calls by pressing a record key on the SIP-T28P IP phone. There are 2

different ways of configuring call recording and they even work differently:

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

a recording.

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

system administrator for the predefined URL.

To configure a Record key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line 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 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->Memory Keys (or Line 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 filed.

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

You can also configure the Record or URL Record keys via web user interface at the path

Phone->DSS Keys.

The Record/URL Record keys control the recording and are available:

 During an active call

 When calls are on hold or mute

User Guide SIP-T28P IP Phone

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 cannot be recorded

appears for 1 second

The way listening to the recordings may be different on different servers. Contact your system administrator for more information.

 During a blind or attended transfer

 During a conference call

 When the phone prompts you to answer an incoming call

The Record/ URL Record keys are not available:

 When there are no connected calls on your phone

 When you place a new call

To record a call:

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

If the recording starts successfully, the recording icon appears on the LCD screen

and the Record or URL Record key LED flashes green.

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 turns off.

Note

Recording status indications you need to know:

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

The hot desking feature is not available on all servers. Contact your system administrator for more information.

Advanced Phone Features

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-T28P IP phone to log out the existing accounts and

then log in 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.

To configure a hot desking key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line 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 Hot Desking from the Key Type

field.

5. Leave the Value field blank.

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

You can also configure a hot desking key via web user interface at the path

Phone->DSS Keys.

To use hot desking:

1. Press the hot desking key when the phone is idle.

User Guide SIP-T28P IP Phone

The intercom feature is not available on all servers. Contact your system administrator for more information.

The phone prompts the following warning:

2. Press the OK soft key, all currently configured accounts will be unregistered

immediately and their configuration data will be removed from the phone.

3. The login wizard will be shown as below:

Note

4. Enter the Login information in each filed.

After successfully login, you can place calls, receive messages, answer calls, etc.

5. Press the hot desking key again to log out.

Intercom is a useful feature in an office environment to quickly connect with the operator

or the secretary. You can press the configured intercom key to automatically connect

with a remote extension for outgoing intercom calls, and the remote extension will

automatically answer the incoming intercom calls.

To configure an intercom key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).

2. Select the desired DSS key.

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

Advanced Phone Features

Intercom features

Description

Intercom Allow

Allows you to enable or disable the IP phone to

automatically answer an incoming intercom call.

Intercom Mute

Allows you to enable or disable the microphone on

the IP phone for Intercom calls.

Intercom Tone

Allows you to enable or disable a warning tone when

the phone receives an incoming intercom call.

Intercom Barge

Allows you to enable or disable the IP phone to

automatically answer an incoming intercom call

while there is already an active call on the phone.

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.

You can also configure an intercom key via web user interface at the path Phone->DSS

Keys.

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.

By default, the SIP-T28P IP phone supports to answer an incoming intercom call

automatically. 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 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:

User Guide SIP-T28P IP Phone

Your administrator can set a time period delay before the phone automatically answers. Contact your system administrator for more information.

To configure intercom features via phone user interface:

1. Press Menu->Features->Intercom.

2. Make the desired changes.

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

You can also configure these specific parameters via web user interface at the path

Phone->Features.

Note

Intercom Allow

You can enable or disable the phone to automatically answer an incoming intercom call.

If Intercom Allow is enabled, the phone automatically answers an incoming intercom

call. If Intercom Allow is disabled, the phone rejects incoming intercom calls and sends

a busy signal to the caller. Intercom Allow is enabled by default.

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

Mute is disabled, the microphone is un-muted for incoming calls. Intercom Mute is

disabled by default.

Intercom Tone

You can enable or disable the phone to play a warning tone when receiving an

intercom call. If Intercom Tone is enabled, the phone plays a warning tone to alert you

before answering the intercom call. If Intercom Tone is disabled, the phone

automatically answers the intercom call without warning. Intercom 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

Advanced Phone Features

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 allow it 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->Memory Keys (or Line 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 number (e.g. 224.5.6.20:10008) in the Value

field.

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

You can also configure a multicast paging key via web user interface at the path

Phone->DSS Keys.

You can also configure the phone to use a default codec for sending Multicast RTP

stream via web user interface.

To configure a default codec for multicast paging via web user interface:

1. Click on Phone->Features.

2. Select the desired codec from the pull-down list of MulticastCodec.

User Guide SIP-T28P IP Phone

If G722 codec is used for multicast paging, the phone LCD screen prompts "HD" to indicate that is providing high definition voice.

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.

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

involved.

The multicast paging key LED illuminates solid green.

The following figure shows a multicast RTP session on the phone:

Note

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.

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.

You can also change the behavior of how the phone handles incoming multicast paging

calls by configuring specific parameters via web user interface. The specific parameters

are: Paging Barge and Paging Priority Active.

Paging Barge

You can use the paging barge feature to define 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,

then it will be ignored automatically. If Disabled is selected from the pull-down list of

Advanced Phone Features

The multicast IP addresses range from 224.0.0.0 to 239.255.255.255. The priorities of listening addresses are predefined: 1 with the highest priority, 10 with the lowest priority.

Both the multicast paging sender and the receiver will play a warning tone when pressing the multicast paging key.

Paging Barge, the voice call in progress shall take precedence over all incoming

multicast paging calls. The valid values in the Paging Barge field are:

 1 to 10: Define the priority of the active call, 1 is the highest priority, 10 is the lowest

priority.

 Disabled: The voice call in progress shall take precedence over all incoming paging

calls.

Paging Priority Active

You can enable or disable this feature to decide 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 the incoming multicast paging call with a lower priority,

otherwise, the phone will play the incoming multicast RTP and place the previous

multicast paging call on hold. If disabled, the phone will automatically ignore all

incoming multicast paging calls.

To configure multicast listening addresses via web user interface:

1. Click on Contacts->MulticastIP.

Note

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.

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.

Music on hold (MOH) is the business practice of playing recorded music to fill the

silence that would be heard by the callers who have been placed on hold. To use this

feature, you should specify a SIP URI pointing to a Music on Hold Server account, when

placing a call on hold, the phone will invite this SIP URI to the Music on Hold Server

account. The Music on Hold 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.

User Guide SIP-T28P IP Phone

All involved parties cannot use encrypted RTP (SRTP).

To configure music on hold 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 in the Music on hold server field.

5. Click Confirm to accept the change.

When you have placed a call on hold, the held party can then hear the music.

Note

ACD feature 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. The ACD feature on the SIP-T28P IP phone allows the ACD system to

distribute calls from large volumes of incoming calls to the registered IP phone users. To

use this feature, you should configure an ACD key in advance.

To configure an ACD key via phone user interface:

1. Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).

2. Select the desired DSS key.

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

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

ID field.

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

You can also configure an ACD key via web user interface at the path Phone->DSS

Keys.

To use the ACD feature:

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.

1. Press the ACD key when the phone is idle.

The phone LCD screen prompts you the following information:

User ID: the phone number used to log in the queue.

Password: the password used to log in the queue.

2. Press the Log In soft key to log in.

Advanced Phone Features

Note

After configuring an ACD key, you can press the ACD key to log in 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 phone status. You can press the Available/Unavailable soft key

to change your phone status. The system server monitors your phone status. When you

set the phone status to available, the ACD key LED illuminates solid green, and then the

server begins distributing calls to your phone. When you set the phone to unavailable,

the ACD key LED illuminates flashing green, and then the server temporarily stops

distributing calls to your phone. To log out the ACD system, press the Log Out soft key.

User Guide SIP-T28P IP Phone

The SMS feature is not available on all servers. Contact your system administrator for more information.

If the phone prompts receiving new text messages, you can also press the View soft key to read the new messages directly.

You can send and receive text messages using the SIP-T28P 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 phone LCD screen will prompt

receiving new text messages with the number of waiting messages (example: 5 New

Text Message) 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.

2. Compose the new text message. You can press the abc soft key to change the input

Advanced Phone Features

mode.

3. Press the Send soft key.

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.

You can also send a text message via web user interface at the path Phone->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 This to delete the desired message.

User Guide SIP-T28P IP Phone

You can also delete all text messages by pressing the Delete soft key and then select Delete All. You can refer to the above steps.

You can also delete a specific message after retrieving by pressing the Delete soft key.

Voice Mail feature is not available on all servers, contact your system administrator for more information.

The LCD screen prompts "Delete Message?".

4. Press the Yes soft key to delete this message or the No soft key to cancel.

Note

You can leave voice mails for someone else on the SIP-T28P 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 phone

LCD screen will prompt receiving a new voice mail and a flashing icon.

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 the voice mail,

and then hang up after completing the voice mail.

Advanced Phone Features

Voice mail access code must be predefined on the system server. Contact your system administrator for the more information.

Before listening to the voice mails, make sure the voice mail access code has been configured.

When all new voice mails are retrieved, the MESSAGE key LED will turn off.

To configure voice mail access codes via phone user interface:

1. Press Menu->Messages->Voice Mail->Set Voice Mail.

2. Press the navigation keys to highlight the account which you want to set.

3. Press the 123 soft key to select the proper input mode and then enter the voice mail

access code (e.g. *97).

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

Note

To listen to the voice mails:

1. When the phone user interface prompts receiving new voice mails, press or

the Connect soft key to dial out the access voice mail code.

2. Follow the voice prompt to listen to the voice mails.

To view the voice mail via phone user interface:

1. Press Menu->Messages->Voice Mail->View Voice Mail.

The phone LCD screen displays the amount of the voice mails that includes new or

old voice mails.

2. Select an account and then press the Connect soft key to listen to the voice mails.

User Guide SIP-T28P IP Phone

Options

Description

Subscribe for MWI

Enable or disable a subscription for MWI service.

MWI Subscription Period

Period of MWI subscription. The IP phone re-sends a

MWI subscription before expiring.

MWI service is not available on all servers. Contact your system administrator for more information.

The SIP-T28P IP phone supports MWI feature when receiving a new voice message. If

someone leaves you a voicemail, you will receive a message waiting indicator. MWI will

be indicated in three ways: a warning tone, the MESSAGE key LED illuminates solid

green and an indicator message (including a voice mail icon) appears on the LCD

screen. This is cleared only when you retrieve all voice mails or delete them.

For some particular servers, the MWI service is unsolicited. So the SIP-T28P IP phone just

need to handle the MWI messages sent from the server. But for some servers, the MWI

service is solicited. In this case, the SIP-T28P IP phone must enable the MWI Subscription

for MWI messages.

Note

The MWI Subscription parameters you need to know:

To enable MWI subscription via web user interface:

1. Click on Account->Advanced.

2. Select Enabled from the pull-down list of Subscribe for MWI.

3. Enter the period time (in seconds) in the MWI Subscription Period field.

4. Click Confirm to accept the change.

Troubleshooting

This chapter provides general troubleshooting information to help you solve the

problems you might encounter when using your SIP-T28P IP phone.

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

system administrator.

Why is the phone LCD screen blank?

 Ensure your phone is properly plugged into a functional AC outlet.

 Ensure that the phone isn’t plugged into a plug controlled by a switch that is off.

 If the phone is plugged into a power strip, try plugging it directly into a wall outlet

instead.

 If your phone is powered from PoE, ensure you use a PoE compliant switch or hub, or

contact your system administrator for more information.

 Check that the power LED is on to ensure the phone is powered on.

Why does the LCD screen have bad contrast?

You need to adjust the contrast of LCD screen. To adjust the contrast, refer to Contrast on

page 19.

Why does the phone display "Network Unavailable"?

 Ensure that the Ethernet cable is plugged into the Internet port o 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 Service"?

The phone LCD screen prompts "No Service" message when the SIP accounts do not

settings.

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 13.

Check whether dial tone is present on one of the audio modes.

 Switch between the Handset, Headset (if present) or Hands-Free Speakerphone to

check whether dial tone is present for one of the audio modes.

User Guide SIP-T28P IP Phone

 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 the ringer volume on your phone. To adjust the ringer volume setting, press the

Volume key when the phone is on-hook and idle. For more information, refer to Volume

on page 26.

Why can’t I receive calls?

 Check the SIP registration with your system administrator.

 Check DND (Do Not Disturb) mode is turned off on your phone. Refer to Do Not

Disturb (DND) on page 55.

 Check call forward feature is disabled on the phone. Refer to Call Forward on page

55.

 Check whether the caller number is stored in the blacklist directory. Refer to Blacklist

on page 32.

Why is my handset not working?

Check to ensure that the handset cord is fully connected to both the handset jack on the

phone and handset. Refer to Phone Installation on page 13.

Why is my headset not working?

 Check to ensure that the headset cord is fully connected to the headset jack on the

phone. Refer to Phone Installation on page 13.

 Check to ensure that the headset mode is activated. Refer to Headset

Activation/Deactivation on page 35.

 Check to ensure that the headset volume is adjusted to an appropriate level. Refer

to Volume on page 26.

How to change the user password?

You can change the user password via web user interface:

1. Click on Security->Password.

2. Enter the current user password in the Current Password field.

3. Enter the new user password in the New Password field and Confirm Password field.

4. Click Confirm to accept the change.

Yo u can also contact your system administrator for help.

Note

Any reboot of your phone may take a few minutes.

Reset of your phone may take a few minutes.

Troubleshooting

How to reboot the phone?

To reboot the IP phone via web user interface:

1. Click on Upgrade->Basic.

2. Click Reboot to reboot the IP phone.

How to reset your phone?

Reset your 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 your phone.

To reset your phone via phone user interface:

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

Note

2. Press or to scroll to Reset to factory, and then press the Enter soft key.

The LCD screen prompts the following message:

3. Press the OK soft key.

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 Upgrade->Advanced.

2. Click Start to begin recording signal traffic.

3. Recreate the error to be documented in the trace.

4. Click Stop to end recording.

5. Click Export to open file download window, and then save the file to your local

system.

User Guide SIP-T28P IP Phone

The file format of configuration file must be “.bin”.

How to Export System Log?

We may need you to provide a System Log to help analyze your problem.

To export a System Log via web user interface:

1. Click on Upgrade->Advanced.

2. Select Local from the pull-down list of Export System Log.

3. 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 your phone configurations to help analyze your problem.

In some instance, you may need to import configurations to your phone.

To export your phone configurations via web user interface:

Note

1. Click on Upgrade->Advanced.

2. Click Export to open file download window, and then save the file to your local

system.

To Import phone configurations via web user interface:

1. Click on Upgrade->Advanced.

2. Click Browse to select a configuration file from your local system.

3. Click Import to import the configuration file.

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Specifications and Main Features

Frequently Asked Questions

User Manual