Yealink SIP-T48G User Manual

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

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

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

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

1. This device may not cause harmful interference, and

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

operation.

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

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

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

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

collect such WEEE separately.

Note: This device is tested and complies with the limits for a Class B digital device, pursuant to Part 15 of the

FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not

installed and used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a particular installati on. If

this equipment does cause harmful interference to radio or television reception, which can be determined

by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more

of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

4. Consult the dealer or an experience radio/TV technician for help.

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

opinions and comments to DocsFeedback@yealink.com.

Yealink SIP-T48G IP phone firmware contains third-party software under the GNU General Public License

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

and conditions of the license.

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

be downloaded online:

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About This Guide

Shared Line, Busy Lamp Field List, Network Directory and Network Call Log features are hidden for IP phones in neutral firmware, which are designed for BroadWorks environment. Please contact your system administrator for more information.

Thank you for choosing the SIP-T48G IP phone, an ultra-elegant gigabit IP phone which is

exquisitely designed to provide business telephony features, such as Call Hold, Call

Transfer, Busy Lamp Field, Call Recording, Multicast Paging and Conference over an IP

network. Newly developed industrial designs and user experience appears the

commerce, touch panel enabling switching between screens and application.

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

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

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

before you set up and use the SIP-T48G IP phone.

If this is your first time using the SIP-T48G IP phone, we recommend that you first refer to

the

Quick Installation Guide

and

Quick Reference Guide

, available online:

http://www.yealink.com/SupportDownloadfiles_detail.aspx?CateId=1206&flag=142.

Note

Topics provided in this guide include:

 Chapter 1 Overview

 Chapter 2 Getting Started

 Chapter 3 Customizing Your Phone

 Chapter 4 Basic Call Features

 Chapter 5 Advanced Phone Features

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

Major updates have occurred to the following sections:

 Documentations on page 7

User Guide for the SIP-T48G IP Phone

 Packaging Contents on page 9

Table of Contents

About This Guide .................................................................. ix

In This Guide.................................................................................................................... ix

Summary of Changes ..................................................................................................... ix

Changes for Release 72, Guide Version 72.2 ............................................................. ix

Table of Contents .................................................................. xi

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

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

Icon Instructions................................................................................................................ 2

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

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

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

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

Documentations ............................................................................................................... 7

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

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

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

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

Registration .................................................................................................................... 14

Touch Screen Display ..................................................................................................... 14

Navigating Menus and Fields ....................................................................................... 16

Entering Data and Editing Fields .................................................................................. 17

Phone Status................................................................................................................... 18

Basic Network Settings .................................................................................................. 19

Customizing Your Phone....................................................... 23

General Settings ............................................................................................................ 23

Wallpaper.................................................................................................................... 23

Backlight ...................................................................................................................... 24

Contrast ....................................................................................................................... 25

Language .................................................................................................................... 26

Time & Date ................................................................................................................. 27

Administrator Password ............................................................................................. 30

User Guide for the SIP-T48G IP Phone

Key as Send ................................................................................................................ 31

Audio Settings ................................................................................................................ 31

Volume ......................................................................................................................... 31

Ring Tones ................................................................................................................... 32

Contact Management ................................................................................................... 34

Directory ...................................................................................................................... 34

Local Directory ............................................................................................................ 36

Blacklist........................................................................................................................ 51

Remote Phone Book ................................................................................................... 53

Call History Management ............................................................................................. 55

System Customizations .................................................................................................. 59

Headset Use ............................................................................................................... 59

Bluetooth Headset ...................................................................................................... 61

DSS Keys ..................................................................................................................... 67

Account Management ............................................................................................... 75

Dial Plan ...................................................................................................................... 78

Live Dialpad ................................................................................................................ 83

Hotline ......................................................................................................................... 84

Basic Call Features .............................................................. 87

Placing Calls ................................................................................................................... 88

Answering Calls ............................................................................................................. 90

Ending Calls ................................................................................................................... 91

Redialing Numbers ........................................................................................................ 92

Recent Call In Dialing .................................................................................................... 92

Auto Answer ................................................................................................................... 93

Auto Redial ..................................................................................................................... 94

Call Completion ............................................................................................................. 95

Call Return ...................................................................................................................... 97

Call Mute ........................................................................................................................ 98

Call Hold/Resume .......................................................................................................... 98

Do Not Disturb (DND) .................................................................................................... 99

Call Forward................................................................................................................. 104

Call Transfer ................................................................................................................. 111

Call Waiting .................................................................................................................. 113

Conference ................................................................................................................... 113

Local Conference ...................................................................................................... 114

Network Conference ................................................................................................ 115

Call Park ....................................................................................................................... 117

Call Pickup .................................................................................................................... 118

Anonymous Call ........................................................................................................... 122

Anonymous Call Rejection ........................................................................................... 123

Advanced Phone Features ................................................ 125

xii

Table of Contents

Busy Lamp Field (BLF).................................................................................................. 125

Call Recording .............................................................................................................. 128

Hot Desking .................................................................................................................. 131

Intercom........................................................................................................................ 132

Outgoing Intercom Calls .......................................................................................... 133

Incoming Intercom Calls ........................................................................................... 133

Multicast Paging .......................................................................................................... 135

Sending RTP Stream ................................................................................................. 135

Receiving RTP Stream ............................................................................................... 137

Music on Hold .............................................................................................................. 139

Messages ..................................................................................................................... 140

Voice Mail.................................................................................................................. 140

Message Waiting Indicator (MWI) .......................................................................... 142

Troubleshooting ................................................................. 145

Regulatory Notices ............................................................ 155

Service Agreements .................................................................................................... 155

Limitations of Liability................................................................................................... 155

Safety Instructions ........................................................................................................ 155

Appendix A - Time Zones .................................................. 157

Index ................................................................................. 159

xiii

User Guide for the SIP-T48G IP Phone

xiv

Overview

This chapter provides the overview of the SIP-T48G IP phone. Topics include:

 Hardware Component Instructions

 Icon Instructions

 LED Instructions

 User Interfaces

 Documentations

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

system administrator.

The main hardware components of the SIP-T48G IP phone are the touch screen and the

keypad.

User Guide for the SIP-T48G IP Phone

Item

Description

①

Power Indicator LED

Indicates phone power and some feature statuses.

②

Touch 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 file…”)

• Time and date

③

HEADSET Key

Toggles and indicates the headset mode.

④

MUTE Key

Toggles and indicates mute feature.

⑤

HOLD Key

Places a call on hold or resumes a held call.

⑥

TRANSFER Key

Transfers a call to another party.

⑦

Speakerphone Key

Toggles the hands-free speakerphone mode.

⑧

MESSAGE Key

Accesses voice messages.

⑨

REDIAL Key

Redials a previously dialed number.

⑩

Position the cursor.

Enable or disable fields.

Turn pages or scroll through values for a field.

Scroll through items.

Confirms actions or answers incoming calls.

Cancels actions or rejects incoming calls.

⑪

Volume Key

Adjusts the volume of the handset, headset, speaker and

ringer.

⑫

Keypad

Provides the digits, letters and special characters in

context-sensitive applications.

Icons

Description

Network is unavailable

Registered successfully

Hardware component instructions of the SIP-T48G IP phone are:

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

Overview

Icons

Description

(Flashing)

Registering Hands-free speakerphone mode

Handset mode

Headset mode

Multi-lingual lowercase letters input mode

Multi-lingual uppercase letters input mode

Alphanumeric input mode

Numeric input mode

Multi-lingual uppercase and lowercase letters

input mode

Voice Mail

Auto Answer

Do Not Disturb

Call Forward

Call Hold

Call Mute

Ringer volume is 0

Received Calls

Placed Calls

Missed Calls

Forwarded Calls

Recording box is full

User Guide for the SIP-T48G IP Phone

Icons

Description

A call cannot be recorded

Recording starts successfully

Recording cannot be started

Recording cannot be stopped

Bluetooth mode is on

Bluetooth headset is both paired and connected

The default caller photo and contact icon

LED Status

Description

Solid red

The phone is initializing.

Fast flashing red

The phone is ringing.

Slow flashing red

The phone receives a voice mail.

Off

The phone is powered off.

The phone is idle.

The phone is busy.

The call is placed on hold or is held.

The call is mute.

The above introduces the default power indicator LED status. The status of the power indicator LED is configurable via web user interface. For more information, refer to

Yealink_SIP-T4X_IP_Phone_Family_Administrator_Guide_V72_2

Note

Power Indicator LED

Overview

Options

Phone User Interface

Web User Interface

Status

√

--IPv4

--MAC

--Firmware

--Network

--Phone

--Accounts

Basic Call Features

Two ways to customize configurations of your SIP-T48G IP phone:

 The user interface on the IP phone.

 The user interface in a web browser on your PC.

The hardware components keypad and touch screen constitute the phone user

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

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

interface to access all configuration settings. In many cases, it is possible to use either

the phone user interface and/or the web user interface interchangeably. However, in

some cases, it is only possible to use one or the other interface to operate the phone

and change settings.

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

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

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

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

to Customizing Your Phone on page 23.

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

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

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

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

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

(case-sensitive).

The main 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 for the SIP-T48G IP Phone

Options

Phone User Interface

Web User Interface

--Auto Answer

√

--Auto Redial

√

--Call Completion

√

--Call Forward

√

--Call Waiting

√

--Call Park

√

--Call Pickup

√

--Call Return

√

--Conference

--Anonymous Call

√

--Anonymous Call Rejection

√

--DND

√

Basic Phone Settings

--Language √ √

--Time & Date

√

--Administrator Password

√

--Ring Tones √ √

--Wallpaper √ √

--Backlight √ √

--Call History Management

√

--Contact Management

√

--Local Directory

√

--Blacklist √ √

--Remote Phone Book

√

--LDAP √

--Dial Plan √

--DSS Keys √ √

--Key as Send

√

--Hotline √ √

--Live Dialpad

√

Advanced Phone Features

√

--BLF

√

--Call Recording

√

--Hot Desking

√

--Intercom

√

--Multicast Paging

--Music on Hold

--Messages

√

SIP Account

√

--User Options

--Register Status

√

Overview

Options

Phone User Interface

Web User Interface

--Account Status

√

--Label

√

--Display Name

√

--Register Name

√

--User Name

√

--Password

√

--SIP Server 1/2

√

--Server Option

--Registrar Port

--Outbound Status

√

--Outbound Proxy

√

--NAT Traversal

--STUN Status

√

--STUN Server

√

Name

Contents

Where found

Language

Quick Installation

Guide

Basic setup of the

phone

In the package

English

Quick Reference

Guide

Basic call features

and phone

customizations

In the package

English

User Guide

Phone/Web user

interface settings

Basic call features

and advanced

phone features

On the website

English

The table above lists most of the feature options. Please refer to the relevant sections for more information.

You can also download the latest documentations online:

http://www.yealink.com/SupportDownloadfiles_detail.aspx?CateId=1206&flag=142.

Note

The following table shows documentations available for the SIP-T48G IP phone.

Note

User Guide for the SIP-T48G IP Phone

Getting Started

This chapter provides the following basic installation instructions and information for

obtaining the best performance with the SIP-T48G IP phone. Topics include:

 Packaging Contents

 Phone Installation

 Phone Initialization

 Phone Status

 Basic Network Settings

 Registration

 Touch Screen Display

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

system administrator.

The following components are included in your SIP-T48G IP phone package:

 SIP-T48G IP Phone

 Phone Stand

User Guide for the SIP-T48G IP Phone

 Wall Mount Bracket (Optional)

 Power Adapter (Optional)

 Handset & Handset Cord

 Ethernet Cable

 Quick Installation Guide & Quick Reference Guide

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

administrator.

Getting Started

The wall mount bracket should be purchased separately.

The top two slots are plugged up by silica gel. You need to pull out silica gel before attaching the wall mount bracket. For more information on how to mount your phone to a wall, refer to

Yealink Wall Mount Quick Installation Guide for T4X IP Phones

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

This section introduces how to install the phone:

1) Attach the stand or the optional wall mount bracket

2) Connect the handset and optional headset

3) Connect the network and power

1) Attach the stand or the optional wall mount bracket

Desk Mount Method

Note

Wall Mount Method (Optional)

User Guide for the SIP-T48G IP Phone

The headset, wireless headset adapter EHS36 and Bluetooth USB Dongle BT40 should be purchased separately.

The EXT port can also be used to connect an expansion module EXP40.

For more information on how to use EHS36, EXP40 and Bluetooth USB Dongle BT40, refer to Yealink EHS36 User Guide, Yealink EXP40 User Guide and Yealink Bluetooth USB Dongle BT40 User Guide.

2) Connect the handset and optional headset

Note

3) Connect the network and power

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

advise you which one to use.

 AC power (Optional)

 Power over Ethernet (PoE)

AC Power (Optional)

To connect the AC power:

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

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

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

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

Getting Started

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

The phone can also share the network with another network device such as a PC (personal computer). It is an optional connection.

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

If your network does not use DHCP, proceed to Basic Network Settings on page 19.

Power over Ethernet

With the included or a regular Ethernet cable, the SIP-T48G IP phone can be powered

from a PoE-compliant switch or hub.

To connect the PoE:

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

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

Note

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

Automatic Phone Initialization

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

screen displays "Initializing…Please wait" during the initialization.

DHCP (Dynamic Host Configuration Protocol)

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

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

address) by default.

Note

User Guide for the SIP-T48G IP Phone

No.

Name

Description

Status Bar

Displays the phone’s default account, icons and

the time and date.

Default Account

The label of the default account is displayed on

the left of the status bar.

Icons

Icons are displayed in the center of the status

bar.

Time and Date

The phone’s time and date are displayed on the

right of the status bar.

Line Keys (1-11)

The idle screen displays line keys 1-11 and the

line keys 1-6 on the left can be used to activate

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

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

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

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

phone, refer to Account Management on page 75.

Idle Screen Display

If the phone has successfully started up, the idle screen will be shown. The following

figure is an example of what is displayed on the touch screen.

Getting Started

No.

Name

Description

up to six lines.

Various features can be assigned to line keys.

Each line key can show the label and indicate

status of the assigned feature.

DSS Key

Provides a quick access to the line key

configuration screen.

Wallpaper

Shows the specified wallpaper. You can

customize the wallpaper. For more information,

refer to Wallpaper on page 23.

Call Window

Displays the call information.

Shortcut Keys

: tap this shortcut key to enter the History

screen and view call history.

: tap this shortcut key to enter the Directory

screen and view contacts.

: tap this shortcut key to toggle the DND

mode or enter the custom DND configuration

screen.

: tap this shortcut key to enter the main

menu.

Configuration Screen Display

User Guide for the SIP-T48G IP Phone

No.

Name

Description

Screen Title Area

Displays the title of the access menu screen.

Operation Option Area

Displays various operation options for

different menu screens.

Menu Tree Area

Displays menu items.

You can tap the desired menu item to enter

the corresponding feature configuration

screen.

Configuration Area

Displays configuration items of the

highlighted menu item in the menu tree area.

You can configure feature settings in this

area.

Soft Keys

Label automatically to identify their

context-sensitive features.

If you want to

Action

Enter the main menu.

Tap .

Return to the idle screen.

Tap .

Go back to the previous menu.

Tap or press .

Select an item.

Tap the item.

Scroll to the item by pressing or .

Scroll through items page by

page.

Tap or .

(If you are in the call history, recent call list,

language configuration screen or ring tones

configuration screen, you can also press

or .)

Scroll through values for a field.

Tap the field’s highlighted gray box. From the

pull-down list, tap or to scroll through

The menu system will automatically exit to the idle screen after 60 seconds of inactivity.

Note

To navigate menus and fields, you can:

 Tap soft keys on the touch screen.

 Tap menu items, fields, and arrows on the touch screen.

 Press keys on the phone keypad.

To operate your phone, follow these tips:

values page by page, or press or to

scroll values one by one.

Select a value for a field.

From the pull-down list, tap the value or scroll

to the value and then press .

You can enter data and edit fields using the keypad on the phone:

If you want to

Action

Enter only numbers (1),

uppercase (A) characters,

lowercase (a) characters, or

alphanumeric (2aB) characters.

Press a digit key one or more times to enter the

characters (in either lowercase or uppercase

mode) or number that displays on the digit

key.

You can tap the IME soft key one or more times

to switch between uppercase (ABC soft key),

numeric (123 soft key), alphanumeric (2aB soft

key), title case (Abc soft key) and lowercase

(abc soft key) input modes.

For example, if the input mode is ABC:

- To enter “A”, press once.

- To enter “B”, press two times quickly.

- To enter “C”, press three times

quickly.

Enter special characters.

Press the digit key , or .

(These keys provide a different set of special

characters.)

Delete text you entered.

Press or to position the cursor to the

right of the text you want to delete, and then

tap the Delete soft key.

Delete an entire field of data.

Double tap the field of data, so that the data is

highlighted, and then tap the Delete soft key.

When the phone is in the pre-dialing screen, you can enter characters using the on-screen keypad.

To enter or edit data:

1. Tap the field.

2. Do one of the following:

Getting Started

Note

3. Press or tap the Save soft key.

User Guide for the SIP-T48G IP Phone

You can view the device certificate status via phone user interface only.

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

Available information of phone status includes:

 General information (IP address, MAC address and firmware version)

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

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

certificate status)

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

Note

To view the phone status via phone user interface:

1. Press , or tap ->Status.

2. Tap the desired item to view the specific information.

To view the phone status via web user interface:

1. Open the web browser on your computer.

2. Enter the IP address in the browser’s address bar, and then press the Enter key.

Getting Started

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

4. Click Confirm to login.

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

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

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

addresses.

To configure the IP address mode via phone user interface:

1. Tap ->Advanced (password: admin) ->Network->WAN Port.

2. Tap the gray box of the IP Mode field.

User Guide for the SIP-T48G IP Phone

3. Tap the desired value (IPv4, IPv6 or IPv4 & IPv6) from the pull-down list.

4. Tap the Save soft key to accept the change or to cancel.

To configure a static IPv4 address via phone user interface:

1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv4.

2. Tap the gray box of the Type field.

3. Tap Static IP from the pull-down list.

4. Enter the desired values in the IP Address, Subnet Mask, Gateway, Primary DNS

and Secondary DNS fields respectively.

5. Tap the Save soft key to accept the change or to cancel.

To configure a static IPv6 address via phone user interface:

1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv6.

2. Tap the gray box of the Type field.

3. Tap Static IP from the pull-down list.

Getting Started

Wrong network settings may result in inaccessibility of your phone and may also have an impact on your network performance. For more information on these parameters, contact your system administrator.

4. Enter the desired values in the IP Address, IPv6 IP Prefix, Gateway, Primary DNS and

Secondary DNS fields respectively.

5. Tap the Save soft key to accept the change or to cancel.

If you are using an xDSL modem, you can connect your phone to the Internet via PPPoE

mode. Set the WAN port as a PPPoE port. The PPPoE port will perform a PPP negotiation

to obtain the IP address. Contact your system administrator for the PPPoE user name

and password.

To configure PPPoE via phone user interface:

1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv4.

2. Tap the gray box of the Type field.

3. Tap PPPoE from the pull-down list.

4. Enter the PPPoE user name and password in the corresponding fields.

5. Tap the Save soft key to accept the change or to cancel.

Note

User Guide for the SIP-T48G IP Phone

Customizing Your Phone

You can customize your SIP-T48G IP phone by personally configuring certain settings, for

example, wallpaper, time & date and ring tones. You can add contacts to the phone’s

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

tones for different callers.

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

include:

 General Settings

 Audio Settings

 Contact Management

 Call History Management

 System Customizations

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

system administrator.

You can customize the wallpaper of the SIP-T48G IP phone. You can change the

wallpaper image via phone user interface or web user interface. You can also upload

custom wallpaper images via web user interface. The file format of wallpaper image

must be *.jpg, *.png or *.bmp. A single file size must be less than 5M. and the total size

of all custom wallpaper must be within 20M.

To change the wallpaper via phone user interface:

1. Tap ->Basic->Display->Wallpaper.

User Guide for the SIP-T48G IP Phone

2. Tap or , or press or to select the desired wallpaper image.

3. Tap the Save soft key to accept the change or to cancel.

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

To upload the custom wallpaper via web user interface:

1. Click on Settings->Preference.

2. In the Upload Wallpaper (800*480) field, click Browse to locate the wallpaper

image from your local system.

3. Click Upload to upload the file.

4. Click Confirm to accept the change.

The custom wallpaper appears in the pull-down list of Wallpaper.

You can configure backlight to adjust the brightness of the touch screen. Backlight On

Intensity is used to adjust the backlight intensity of the touch screen. Backlight time

specifies the delay time to turn off or dusky the backlight when the IP phone is inactive.

Customizing Your Phone

Backlight Idle Intensity decides whether the IP phone turns off or dusky the backlight of

the touch screen after a period of inactivity.

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

 Always On: Backlight is on permanently.

 15s, 30s, 60s, 120s, 300s, 600s, 1800s: Backlight goes out or turns dusky when the

phone has been inactive for approximately 15, 30, 60, 120, 300, 600 or 1800

seconds.

To configure the backlight via phone user interface:

1. Tap ->Basic->Display->Backlight.

2. Tap the gray box of the Backlight Active Level field.

3. Tap the desired level from the pull-down list.

4. Tap the gray box of the Backlight Inactive Level field.

5. Tap the desired value from the pull-down list.

6. Tap the gray box of the Backlight Time field.

7. Tap the desired time from the pull-down list.

8. Tap the Save soft key to accept the change or to cancel.

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

You can configure the contrast of the expansion module EXP40 connected to the

SIP-T48G IP phone to a comfortable level on the phone. Ensure that the expansion

module has been connected to the phone before configuration.

To configure the contrast via phone user interface:

1. Tap ->Basic->Display->Contrast.

2. Tap the gray box of the Contrast Level field.

User Guide for the SIP-T48G IP Phone

Not all of the supported languages are available for selection. The available languages depend on the language packs currently loaded to the IP phone. Please contact your system administrator for more information on the available languages of your new phone.

3. Tap the desired value from the pull-down list.

The default contrast level is 6.

4. Tap the Save soft key to accept the change or to cancel.

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

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

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

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

and the web user interface respectively.

Note

To change the language for the phone user interface:

1. Tap ->Basic->Language.

Customizing Your Phone

2. Tap the desired language.

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

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

To change the language for the web user interface:

1. Click on Settings->Preference.

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

3. Click Confirm to accept the change.

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

The time and date are displayed on the touch screen when the phone is idle. You can

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

configure the time and date manually. If the phone cannot obtain the time and date

from the Simple Network Time Protocol (SNTP) server, contact your system administrator

for more information.

User Guide for the SIP-T48G 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. Tap ->Basic->Time & Date->General.

2. Tap the gray box of the Type field.

3. Tap SNTP Settings from the pull-down list.

4. Tap the gray box of the Time Zone field.

5. Tap the time zone that applies to your area from the pull-down list.

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

6. Enter the domain names or IP addresses of SNTP servers in the NTP Server 1 and

NTP Server 2 fields respectively.

7. Tap the gray box of the Daylight Saving field.

8. Tap the desired value from the pull-down list.

9. Tap the Save soft key to accept the change or to cancel.

Note

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

1. Tap ->Basic->Time & Date->General.

2. Tap the gray box of the Type field.

3. Tap Manual Settings from the pull-down list.

Customizing Your Phone

Date Format

Example (2013-7-27)

WWW MMM DD

Sat Jul 27

DD-MMM-YY

27-Jul-13

YYYY-MM-DD

2013-07-27

DD/MM/YYYY

27/07/2013

MM/DD/YY

07/27/13

DD MMM YYYY

27 Jul 2013

WWW DD MMM

Sat 27 Jul

4. Enter the specific date and time in the corresponding fields.

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

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

There are 7 available date formats. For example, for the date format “WWW DD MMM”,

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

and “MMM” represents the first three letters of the month.

The date formats you need to know:

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

1. Tap ->Basic->Time & Date->Format.

2. Tap the gray box of the Date Format field.

3. Tap the desired date format from the pull-down list.

4. Tap the gray box of the Time Format field.

User Guide for the SIP-T48G IP Phone

5. Tap the desired time format (12 Hour or 24 Hour) from the pull-down list.

6. Tap the Save soft key to accept the change or to cancel.

Time and date are configurable via web user interface at the path Settings->Time &

Date.

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

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

password as soon as possible.

To change the administrator password via phone user interface:

1. Tap ->Advanced (password: admin) ->Set Password.

2. Enter the old password in the Current Password field.

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

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

5. Tap the Save soft key to accept the change or to cancel.

Administrator password is configurable via web user interface at the path

Security->Password.

Customizing Your Phone

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

To configure key as send via phone user interface:

1. Tap ->Call Features->General.

2. Tap the gray box of the Key as Send field.

3. Tap # or * from the pull-down list, or tap Disabled to disable this feature.

4. Tap the Save soft key to accept the change or to cancel.

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

Information.

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

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

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

User Guide for the SIP-T48G IP Phone

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

To adjust the volume when the phone is idle:

1. Press to adjust the ringer volume.

Note

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

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

speakerphone or headset).

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

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

from your neighbor’s.

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

1. Tap ->Basic->Sound->Ring Tones.

2. Tap the desired ring tone.

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

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 local directory (refer to Adding Contacts). If no ring tone is assigned to the contact, the phone will play the ring tone assigned to the associated group (refer to Groups). Otherwise, the phone will play the ring tone assigned to the account. If no ring tone is assigned to the contact, the associated group and account, the phone will play the ring tone assigned to the phone.

3. Tap the Save soft key to accept the change or to cancel.

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

1. Click on Account.

Customizing Your Phone

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

3. Click on Basic.

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

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

Refer to the above instruction.

5. Click Confirm to accept the change.

Note

User Guide for the SIP-T48G IP Phone

All custom ring tone files must be within 100KB. Uploading custom ring tones for your phone is configurable via web user interface only.

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

1. Click on Settings->Preference.

2. In the Upload Ringtone field, click Browse to locate a ring tone file (the file format

must be *.wav) from your local system.

3. Click Upload to upload the file.

Note

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

 Directory

 Local Directory

 Blacklist

 Remote Phone Book

Directory provides easy access to frequently used lists. The lists may contain Local

Directory, History, Remote Phone Book and LDAP.

To configure the directory via web user interface:

1. Click on Directory->Setting.

2. In the Directory block, select the desired list from the Disabled column and then

click .

Customizing Your Phone

Directory is configurable via web user interface only.

If the remote phone book and LDAP are not configured in advance, you cannot view remote phone book and LDAP lists on the phone user interface. For more information on remote phone book, refer to Remote Phone Book on page 53. For more information on LDAP, refer to

Yealink_SIP-T4X_IP_Phone_Family_Administrator_Guide_V72_2

The selected list appears in the Enabled column.

3. Repeat the step 2 to add more lists to the Enabled column.

4. To remove a list from the Enabled column, select the desired list and then click .

5. Click Confirm to accept the change.

Note

To check directory via phone user interface:

1. Tap when the phone is idle.

- If there is only one list is enabled for the directory, tap to view the list

directly.

User Guide for the SIP-T48G IP Phone

- If more than one list is enabled for the directory, tap the desired list you want to

view, and then tap the OK soft key.

The built-in phone directory can store the names and phone numbers of your contacts.

You can store up to 1000 contacts and 48 groups in your phone's local directory. There

are three default groups in the local directory: Company, Family and Friend. You can

add new groups and contacts; edit, delete or search for a contact; or simply dial a

contact number from the local directory.

To add a group to the local directory:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap Setting.

3. Tap New Group.

4. Enter the desired group name in the highlighted field.

5. Tap to accept the change.

6. Tap to specify a ring tone for the group.

Customizing Your Phone

7. Tap the desired ring tone.

If Auto is selected, the contact in this group will use the ring tone specified to the

contact. Otherwise, it then plays the ring tone specified to the account. For more

information on the ring tone for the account, refer to Ring Tones on page 32.

8. Tap the OK soft key to accept the change.

You can also edit or delete the Company, Family, Friend and the new added contact

groups.

To edit a group in the local directory:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

User Guide for the SIP-T48G IP Phone

2. Tap Setting.

3. Tap the desired group.

4. Tap after the group.

5. Edit the group name in the highlighted field.

6. Tap to accept the change.

To delete a group from the local directory:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap Setting.

3. Tap the desired group.

4. Tap before the group.

The touch screen prompts the following warning:

5. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.

Customizing Your Phone

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

 Manually

 From call history

 From remote phone book

Adding Contacts Manually

To add a contact to the local directory manually:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap the desired contact group.

3. Tap Add.

4. Enter the name and the office, mobile or other numbers in the corresponding fields.

5. Tap the gray box of the Account field.

6. Tap the desired account from the pull-down list.

If Auto is selected, the phone will use the first available account when placing calls

to the contact from the local directory.

7. Tap the gray box of the Ring field.

8. Tap the desired ring tone from the pull-down list.

If Auto is selected, this contact will use the ring tone assigned to the group.

9. Tap the gray box of the Photo field.

10. Tap the desired photo from the pull-down list.

User Guide for the SIP-T48G IP Phone

If the contact has existed in the directory, the touch screen will prompt “Contact name already existed!”.

11. Tap the Save soft key to accept the change or to cancel.

Note

Adding Contacts from Call History

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

1. Tap .

2. Tap or to turn pages.

3. Tap after the desired entry.

4. Tap Add.

5. Edit the corresponding fields.

6. Tap the Save soft key to accept the change.

The entry is successfully saved to the local directory.

Customizing Your Phone

Adding Contacts from remote phone book

To add a contact to the local directory from remote phone book:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

2. Tap Remote Phone Book.

If Remote Phone Book is disabled for the directory, tap ->Directory ->Remote

Phone Book to enter the remote phone book.

3. Tap the desired remote phone book.

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

contacts on the touch screen.

4. Tap after the desired corporate contact.

5. Tap Add.

User Guide for the SIP-T48G IP Phone

6. Edit the corresponding fields.

7. Tap the Save soft key to save the contact to the local directory.

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

"Overwrite the original contact?". Tap 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 phone book operation, refer to Remote Phone Book on

page 53.

To edit a contact in the local directory:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Ta p after the desired contact.

3. Tap the desired field to edit the contact information.

You can tap or to switch the contact you want to edit.

Customizing Your Phone

4. Tap the Save soft key to accept the change or to cancel.

To delete a contact from the local directory:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap after the desired contact.

3. Tap Delete.

The touch screen prompts the following warning:

4. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.

To delete all contacts:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

User Guide for the SIP-T48G IP Phone

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap Setting.

3. Tap the checkbox of Select All.

4. Tap Delete.

The touch screen prompts the following warning:

5. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.

To upload a new custom photo for a contact via web user interface:

1. Click on Directory->Local Directory.

2. Click Browse, and then locate a photo file from your local computer.

3. Click Upload Photo to upload the photo.

The phone only supports the *.png, *.jpg and .bmp format files. The file size must be less than 5M.

You can only delete the custom photo.

Customizing Your Phone

Note

You can click Delete Photo to delete the custom photo.

To change the custom photo for the contact via web user interface:

1. Click on Directory->Local Directory.

2. Click the desired entry you want to edit.

3. Select the desired photo from the pull-down list of Photo.

4. Click Edit to accept the change.

When you place a call to the contact or receive a call from the contact, the touch screen

will display the contact photo.

User Guide for the SIP-T48G IP Phone

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

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap the desired contact.

- If only one number of the contact is stored in the local directory, the contact

number will be dialed out.

- If multiple numbers of the contact are stored in the local directory, the touch

screen will prompt:

Tap the desired number.

The tapped number is dialed out.

Customizing Your Phone

To search for a contact in the local directory:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap Search.

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

the keypad.

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

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

You can search for a contact from the desired lists when the phone is in the pre-dialing

screen. The lists can be Local Directory, History, Remote Phone Book and LDAP.

To configure search source list in dialing via web user interface:

1. Click on Directory->Setting.

2. In the Search Source List In Dialing block, select the desired list from the Disabled

column and click .

The selected list appears in the Enabled column.

3. Repeat step 2 to add more lists to the Enabled column.

4. (Optional.) To remove a list from the Enabled column, select the desired list and

then click .

User Guide for the SIP-T48G IP Phone

Search source list in dialing is configurable via web user interface only.

5. To adjust the display order of the enabled list, select the desired list, and click

or .

Note

6. Click Confirm to accept the change.

The touch screen will display the search results in the adjusted order.

To search for an entry in the enabled search source lists:

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

2. Enter a few continuous characters of the entry’s name or the entry’s phone number.

The entries in the enabled search source lists whose name or phone number

matches the characters entered will appear on the touch screen.

You can tap the desired entry to place a call to the entry.

Customizing Your Phone

You can manage your phone’s local directory via phone user interface 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 Directory->Local Directory.

2. Click Browse to locate 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 Directory->Local Directory.

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

system.

3. (Optional.)Check the Show Title checkbox.

User Guide for the SIP-T48G IP Phone

It will prevent importing the title of the contact information which is located in the

first line of the CSV file.

4. Click Import CSV to import the contact list.

5. (Optional.) Mark the On radio box in the Delete Old Contacts field.

It will delete all existing contacts while importing the contact list.

6. (Optional.) Select the contact information you want to import into the local directory

from the pull-down list of Index.

7. Click Import to complete importing the contact list.

Note

Importing/exporting contact lists is available via web user interface only.

Customizing Your Phone

To export a contact list via web user interface:

1. Click on Directory->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 can store the names and phone numbers for a blacklist. You

can store up to 30 contacts; add, edit, delete or search for a contact in the blacklist

directory; even call a contact from the blacklist directory, but incoming calls from the

blacklist directory contacts will be rejected automatically.

To add a contact to the blacklist directory manually:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

2. Tap Blacklist.

If Local Directory is disabled for the directory, tap ->Directory ->Blacklist to

enter the blacklist directory.

3. Tap Add.

User Guide for the SIP-T48G IP Phone

4. Enter the name and the office, mobile or other numbers in the corresponding fields.

5. Tap the gray box of the Account field.

6. Tap the desired account from the pull-down list.

If Auto is selected, the phone will use the first available account when placing calls

to the contact from the blacklist directory.

7. Tap the Save soft key to accept the change or to cancel.

To add a contact to the blacklist directory from the local directory:

1. Tap .

The IP phone enters the local directory directly as there is only Local Directory in the

directory by default.

If Local Directory is disabled for the directory, tap ->All Contacts or tap ->

Directory ->All Contacts to enter the local directory.

2. Tap after the desired contact.

3. Tap Blacklist.

The touch screen prompts the following warning:

4. Tap the OK soft key to confirm the setting.

For operating instructions on editing, deleting, placing calls to and searching for

contacts in the blacklist directory, refer to the operating instructions of Local Directory on

Customizing Your Phone

An access URL for remote phone book is configurable via web user interface only.

page 36.

You can add local contacts, search for a contact, or simply dial a contact number from

the corporate directory.

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

supports up to 5000 corporate directory entries. For the access URL of the corporate

directory, contact your system administrator.

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

1. Click on Directory->Remote Phone Book.

2. Enter the access URL in the Remote URL field.

3. Enter the name in the Display Name field.

4. Click Confirm to accept the change.

Note

To access your corporate directory via phone user interface:

1. Tap ->Remote Phone Book.

2. Tap the desired remote phone book.

User Guide for the SIP-T48G IP Phone

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

contacts on the touch screen.

You can tap to back to the previous interface.

To search for a contact in the corporate directory:

1. Tap ->Remote Phone Book.

2. Tap Search.

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

contact number using the keypad.

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

appear on the touch screen. You can place a call from the result list.

To place a call from the corporate directory:

1. Tap ->Remote Phone Book.

2. Tap the desired remote phone book to load the corporate directory.

3. Tap the desired contact in the corporate directory.

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

corporate directory when receiving a call.

Customizing Your Phone

To enable the presentation of caller identity stored in remote phone book via web user

interface:

1. Click on Directory->Remote Phone Book.

2. Select Enabled from the pull-down list of Search Remote Phonebook Name.

3. Enter the refresh period in the Search Flash Time (Seconds) field.

The default value is 21600 seconds.

4. Click Confirm to accept the change.

The SIP-T48G IP phone maintains call history lists of Missed calls, Placed calls, Received

calls and Forwarded calls. Call history lists support 400 entries in all. You can view the

call history, place a call, add a contact or delete an entry from the call history list. You

should enable history record in advance.

To enable history record via phone user interface:

1. Tap ->Call Features->General.

2. Tap the On radio box of the History Record field.

3. Tap the Save soft key to accept the change or to cancel.

User Guide for the SIP-T48G IP Phone

To view the call history:

1. Tap .

The touch screen displays all call records.

2. Tap or to turn pages.

You can also press or to switch pages.

You can tap Missed, Placed, Received or Forwarded to view entries in each call list

directly.

3. Tap after the desired entry.

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

To place a call from the call history list:

1. Tap .

The touch screen displays all call records.

2. Tap or to turn pages.

You can also press or to switch pages.

You can tap Missed, Placed, Received or Forwarded to view entries in each call list

directly.

3. Tap the desired entry.

Customizing Your Phone

To add a contact to the blacklist directory from the call history list:

1. Tap .

The touch screen displays all call records.

2. Tap or to turn pages.

You can also press or to switch pages.

You can tap Missed, Placed, Received or Forwarded to view entries in each call list

directly.

3. Tap after the desired entry.

4. Tap Blacklist.

5. Enter the desired values in the corresponding fields.

6. Tap the Save soft key.

For more information, refer to Contact Management on page 34.

To delete an entry from the call history list:

1. Tap .

The touch screen displays all call records.

2. Tap or to turn pages.

You can also press or to switch pages.

You can tap Missed, Placed, Received or Forwarded to view entries in each call list

directly.

3. Tap after the desired entry.

4. Tap Delete.

User Guide for the SIP-T48G IP Phone

The touch screen prompts the following warning:

5. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.

To delete all entries from the call history list:

1. Tap .

The touch screen displays all call records.

2. Tap or to turn pages.

You can also press or to switch pages.

You can tap Missed, Placed, Received or Forwarded to view entries in each call list

directly.

3. Tap Setting.

4. Tap the checkbox of Select All.

5. Tap Delete.

Customizing Your Phone

If both a Bluetooth headset and a wired headset are connected, only the Bluetooth headset can be used.

The touch screen prompts the following warning:

6. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.

Note

If you want to use a wired headset, physically connect your headset and activate the

headset mode for use. For more information on physically connecting a headset, refer

to Phone Installation on page 11.

If you want to use a wireless headset, insert the Bluetooth USB dongle BT40 into the USB

port on the back of the phone. For more information on using a Bluetooth headset, refer

to Bluetooth Headset on page 61.

This section provides the introduction of the wired headset.

To activate the headset mode:

1. Press on the phone.

The HEADSET key LED illuminates solid green, and the icon appears on the

status bar of the touch screen when the headset mode is activated. When you tap

the line key or the Answer soft key to answer an incoming call, the call is connected

to your headset automatically. For more information on using the headset to answer

a call, refer to Answering Calls on page 90.

With the handset on-hook, enter the desired number and tap the Send soft key, then

the phone will place a call using the headset automatically. For more information on

User Guide for the SIP-T48G IP Phone

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

Headset prior is configurable via web user interface only.

using the headset to place a call, refer to Placing Calls on page 88.

To deactivate the headset mode:

1. Press again on the phone.

The HEADSET key LED goes out, and the icon disappears from the touch screen

when the headset mode is deactivated.

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

useful for permanent or full-time headset users.

To enable headset prior via web user interface:

1. Click on Features->General Information.

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

Customizing Your Phone

Dual headset is configurable via web user interface only.

Ensure that the Bluetooth USB dongle BT40 is properly connected into the USB port on the back of the phone. For more information, refer to Phone Installation on page 11.

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

physically connect headsets to the headset jack and handset jack respectively. Once

the phone connects to a call, the headset connected to the headset jack will have

full-duplex capabilities, while the one connected to the handset jack will only be able to

listen.

To enable dual headset via web user interface:

1. Click on Features->General Information.

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

Note

3. Click Confirm to accept the change.

The SIP-T48G IP phone supports Bluetooth. Bluetooth enables low-bandwidth wireless

connections within a range of 10 meters (32 feet). The best performance is in the 1- to

2-meter (3- to 6-foot) range.

You can activate/deactivate the Bluetooth mode, and then pair and connect the

Bluetooth headset with your phone. You can also disconnect and delete your Bluetooth

headset from the phone.

User Guide for the SIP-T48G IP Phone

To activate the Bluetooth mode via phone user interface:

1. Tap ->Basic->Bluetooth.

2. Tap the On radio box of the Bluetooth field.

The IP phone scans the available Bluetooth headset automatically.

The touch screen displays the Bluetooth icon and the Bluetooth device

information (device name and MAC address).

Before you pair a Bluetooth headset, check the indicator on the Bluetooth headset to

make sure the Bluetooth headset is discoverable. For more information, refer to the

documentation from the Bluetooth headset manufacturer.

To pair and connect your Bluetooth headset to your phone:

1. Tap ->Basic->Bluetooth.

2. Tap the found Bluetooth device to connect the Bluetooth headset to your phone.

Customizing Your Phone

When there is no found Bluetooth devices on the touch screen, tap the Scan soft key

to search the Bluetooth device.

The phone prompts you to enter the password.

3. Enter the PIN in the Password field.

The default PIN is “0000”.

4. Tap the OK soft key.

After a while, the Bluetooth headset is automatically connected to your phone. The

touch screen displays as below:

User Guide for the SIP-T48G IP Phone

The Bluetooth icon appears on the touch screen.

With the Bluetooth headset paired and connected, you can use the Bluetooth headset

to place and answer calls. For more information, refer to the documentation from the

Bluetooth headset manufacturer.

Auto connection feature enables or disables the phone to connect with the Bluetooth

headset automatically. This feature is enabled by default.

To disable auto connection feature via phone user interface:

1. Tap ->Basic->Bluetooth.

The touch screen displays the paired and connected Bluetooth headset.

2. Tap after the desired Bluetooth headset.

3. Tap the Off radio box of the Auto Connect field.

To change the priority of paired Bluetooth devices：

1. Tap ->Basic->Bluetooth.

2. Tap after the desired Bluetooth headset.

Customizing Your Phone

3. Tap Move Up or Move Down from the prompt list.

The top one has the highest priority. When there is no Bluetooth headset connected,

the phone will automatically connect to a Bluetooth headset with the highest

priority.

You can disconnect the Bluetooth headset from your phone. When you disconnect the

Bluetooth headset, it still displays in the Bluetooth Devices list. You can easily connect it

to your phone again.

To disconnect your Bluetooth headset from your phone:

1. Tap ->Basic->Bluetooth.

2. Tap the connected Bluetooth headset.

The Bluetooth headset is disconnected. To connect it to your phone again, tap the

Bluetooth headset again.

You can delete your Bluetooth headset from your phone. When you delete the Bluetooth

headset, it disappears from the Bluetooth Devices list. To connect it to your phone again,

User Guide for the SIP-T48G IP Phone

If you cannot connect a Bluetooth headset to the phone successfully, we recommend you to delete the Bluetooth headset in the Bluetooth Devices list (if existed) before pairing it.

you need to scan and connect it again.

To delete your Bluetooth headset from your phone:

1. Tap ->Basic->Bluetooth.

2. Tap after the desired Bluetooth headset you want to delete.

3. Tap the Delete soft key from the prompt list.

Note

The touch screen prompts the following warning “Delete the selected item?”.

4. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.

You can also delete all headsets by tapping the Delete All soft key.

To deactivate the Bluetooth mode via phone user interface:

1. Tap ->Basic->Bluetooth.

Customizing Your Phone

2. Tap the Off radio box of the Bluetooth field.

The Bluetooth icon disappears from the touch screen.

Bluetooth mode is configurable via web user interface at the path Features->Bluetooth.

Two types of DSS keys: Line Keys and Programmable Keys. Details will be introduced in

the following. The SIP-T48G IP phone supports 30 line keys.

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

key feature which will appear on the touch screen. Line keys allow you to quickly access

features such as call return and voice mail. The line key can indicate the monitored

status when the line keys are assigned with particular features, such as BLF. The default

key type of line key 1-6 is Line. The default key type of line key 30 is DSS Key, which

provides a quick access to the line key configuration screen. You can also tap the line

keys 1-11 on the idle screen to enter into the line key configuration screen directly.

To assign functionality to the line key via phone user interface:

1. Tap ->Call Features->DSS Keys.

2. Tap the desired line key.

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

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

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

6. (Optional.) Enter a label that will appear on the touch 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.

This option is only applicable to BLF feature. For more information, refer to Busy

Lamp Field (BLF) on page 125.

User Guide for the SIP-T48G IP Phone

9. Tap the Save soft key to accept the change or to cancel.

You can also tap the line key 30 (DSS Key), and then tap the desired line key to assign

functionality to it.

Line key features are explained in the following subchapters in detail:

 Line

 Speed Dial

 Voice Mail

 Directed Pickup

 Group Pickup

 DTMF

 Prefix

 Local Group

 XML Group

 XML Brower

 LDAP

 Conference

 Forward

 Transfer

 Hold

 DND

 Group Listening

 Zero Touch

 URL

 Directory

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 the phone receives an incoming call,

1. Tap the line key to accept the incoming call.

2. Tap the line key to place the active call on hold.

3. Tap the line key again to resume the held call.

Customizing Your Phone

Speed Dial

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

remember.

Dependencies:

Type (Speed Dial)

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

Label (key label displayed on the touch screen)

Value (the number you want to dial out)

Usage: Tap the speed dial key to dial out the number specified in the Value field, using

the account selected from the Account ID field.

Voice Mail

You can use this key feature to connect voice mail quickly. For more information, refer to

Voice Mail on page 140.

Dependencies:

Type (Key Event)

Key Event (Voice Mail)

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

Label (key label displayed on the touch screen)

Value (the voice mail access code)

Usage: Tap the voice mail key to dial out the voice mail access code, you can follow the

voice prompt to listen to the voice mails.

Directed Pickup

You can use this key feature to answer someone else’s incoming call on the phone.

Dependencies:

Type (Key Event)

Key Event (Directed Pickup)

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

Label (key label displayed on the touch screen)

Value (the directed pickup code followed by the specific phone

number)

Usage: Tap the directed pickup key on your phone when the specific phone number

receives an incoming call. The call is answered on your phone.

Group Pickup

You can use this key feature to answer incoming calls in a group that is associated with

their own group.

Dependencies:

Type (Key Event)

Key Event (Group Pickup)

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

Label (key label displayed on the touch screen)

User Guide for the SIP-T48G IP Phone

DTMF sequence can only contain "0-9", "*", "#" and "A-D".

Value (the group pickup code)

Usage: Tap 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.

DTMF

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

DTMF.

Note

Dependencies:

Type (Key Event)

Key Event (DTMF)

Label (key label displayed on the touch screen)

Value (DTMF sequence)

Usage: Tap the DTMF key during an active call to send the key sequence specified in the

Value field.

Prefix

You can use this key feature to add a specified prefix number before the dialing number.

Dependencies:

Type (Key Event)

Key Event (Prefix)

Label (key label displayed on the touch screen)

Value (the prefix number)

Usage: Tap the prefix key when the phone is idle, then the phone will enter into the

pre-dialing screen and display the prefix number which you specified in the Value field.

You can enter other digits and then dial out.

Local Group

You can use this key feature to access the contact group in the local directory quickly.

For more information, refer to Local Directory on page 36.

Dependencies:

Type (Key Event)

Key Event (Local Group)

Local Group (the contact group name you want to access)

Label (key label displayed on the touch screen)

Usage: Tap the local group key to access the contact group specified in the Local Group

field.

XML Group

You can use this key feature to access remote group in your corporate directory quickly.

You should configure remote phone book in advance. For more information, refer to

Remote Phone Book on page 53.

Customizing Your Phone

Dependencies:

Type (Key Event)

Key Event (XML Group)

XML Group (the remote group name you want to access if remote phone book is configured)

Label (key label displayed on the touch screen)

Usage: Tap the XML group key to access the remote group specified in the XML Group

field.

XML Browser

You can use this key feature to access the XML browser quickly. The XML browser allows

you to create custom services which meet your functional requirements on the server.

You can customize practical applications, such as weather report, stock information,

Google search, etc.

Dependencies:

Type (Key Event)

Key Event (XML Browser)

Label (key label displayed on the touch screen)

Value (the access URL for XML browser)

Usage: Tap the XML browser key to access the XML browser specified in the Value field.

LDAP

You can use this key feature to access the LDAP search interface quickly.

Dependencies:

Type (Key Event)

Key Event (LDAP)

Label (key label displayed on the touch screen)

Usage:

1. Tap the LDAP key to access the LDAP search interface.

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

contact number using the keypad.

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

appear on the touch screen.

Conference

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

Conference on page 113.

Dependencies:

Type (Key Event)

Key Event (Conference)

Label (key label displayed on the touch screen)

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

User Guide for the SIP-T48G IP Phone

If the Value field is left blank, the forward key performs the same as the Forward soft key when receiving an incoming call.

When leaving the Value field blank, the conference key performs the same as the Conference soft key during a call.

Usage: Tap the conference key during an active call to set up a conference with the

number specified in the Value field.

Note

Forward

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

information, refer to Call Forward on page 104.

Note

Dependencies:

Type (Key Event)

Key Event (Forward)

Label (key label displayed on the touch screen)

Value (the number you want to forward to)

Usage:

1. Tap the forward key to forward an incoming call to the number specified in the

Value field.

2. When call forward is in phone mode, tap the forward key to activate call forward

for the phone.

3. When call forward is in custom mode, tap the forward key to access the custom call

forward interface. You can activate or deactivate call forward for one or all

accounts.

Transfer

You can use this key feature to handle the call differently depending on the transfer

mode on DSS key when there is an active call on the phone.

Dependencies:

Type (Key Event)

Key Event (Transfer)

Label (key label displayed on the touch screen)

Value (the number you want to transfer to)

Usage:

 When the transfer mode on DSS key is Blind Transfer, tap the transfer key to

complete the blind transfer to the number specified in the Value field.

 When the transfer mode on DSS key is Attended Transfer, tap the transfer key to

dial out the number specified in the Value field, and then perform the attended or

semi-attended transfer.

 When the transfer mode on DSS key is New Call, tap the transfer key to place a

Note

Transfer mode via DSS key is configurable via web user interface at the path Features->Transfer. For more information on how to configure the transfer mode via DSS key, refer to Busy Lamp Field (BLF) on page 125.

When leaving the Value field blank, the transfer key performs the same as the TRANSFER key or the Transfer soft key during a call. For more information, refer to Call Transfer on page 111.

Customizing Your Phone

new call to the number specified in the Value field.

Hold

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

Dependencies:

Type (Key Event)

Key Event (Hold)

Label (key label displayed on the touch screen)

Usage:

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

2. Tap the hold key again to retrieve the held call.

DND

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

feature to access the custom DND screen. For more information, refer to Do Not Disturb

(DND) on page 99.

Dependencies:

Type (Key Event)

Key Event (DND)

Label (key label displayed on the touch screen)

Usage:

When DND is in phone mode:

1. Tap the DND key to activate DND.

2. Tap the DND key again to deactivate DND.

When DND is in custom mode:

1. Tap the DND key to access the custom DND screen. You can activate or deactivate

DND for one or all accounts.

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.

Dependencies:

Type (Key Event)

Key Event (Group Listening)

User Guide for the SIP-T48G IP Phone

The directory key performs the same function as the Directory soft key when the phone is idle.

Label (key label displayed on the touch screen)

Usage:

1. During a call, tap the group listening key to activate the 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. Tap the group listening key again to deactivate the group listening mode.

Zero Touch

You can use this key feature to configure auto provision and network parameters quickly.

Dependencies:

Type (Key Event)

Key Event (Zero Touch)

Label (key label displayed on the touch screen)

Usage:

1. Tap the zero touch key to access the zero touch screen.

2. Tap the OK soft key within a few seconds.

3. Configure the network parameters in the corresponding fields.

4. Tap the Next soft key.

5. Configure the auto provision parameters in the corresponding fields.

6. Tap the Next soft key.

The phone will reboot to update configurations.

URL

You can use this key feature to trigger the phone to send an HTTP GET request

containing a specific URL.

Dependencies:

Type (URL)

Label (key label displayed on the touch screen)

URL (the URL contained in the HTTP GET request)

Usage: Tap the URL key to trigger the phone to send an HTTP GET request containing the

URL specified in the URL field.

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Specifications and Main Features

Frequently Asked Questions

User Manual