Yealink EXP20 User Manual

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About This Guide

Thank you for choosing the Yealink EXP20 LCD expansion module. EXP20 is designed to expand

the functional capability of the SIP-T29G, SIP-T27P and SIP-T27G IP phones. It features a

160*320 graphic LCD screen and 20 physical keys with dual-color LEDs. You can add 20

additional keys via a page switch key, bringing the number of keys up to 40. Up to six expansion

modules can be daisy-chained to a single SIP-T29G/T27P/T27G host phone, offering a maximum

of 240 Ext keys per phone.

Yealink EXP20 is ideal for receptionists, administrative assistants, call center agents, power-users,

and executives who need to monitor and manage a large volume of calls on a regular basis.

This guide provides everything you need to quickly set up and use the EXP20 LCD expansion

module. Be sure to read the Packing Contents in this guide before you set up and use your

EXP20 LCD expansion module. This guide takes the working together of the Yealink SIP-T29G IP

phone running firmware version 81 and the Yealink EXP20 LCD expansion module as an example

for reference.

About This Guide

In This Guide

Topics provided in this guide include:

 Chapter 1 Getting Started

 Chapter 2 Configuring the Yealink EXP20 LCD Expansion Module

 Chapter 3 Using the Yealink EXP20 LCD Expansion Module

 Chapter 4 Troubleshooting

Summary of Changes

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

Changes for Guide Version 1.1

Documentations of the newly released SIP-T27G IP phones have also been added.

v

Yealink EXP20 User Guide

vi

Table of Contents

Table of Contents

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

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

Summary of Changes ............................................................................................................................................. v

Changes for Guide Version 1.1 ....................................................................................................................... v

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

Getting Started ............................................................................... 1

Packaging Contents ................................................................................................................................................ 1

Physical Features ...................................................................................................................................................... 2

LED Instructions ........................................................................................................................................................ 3

Installation .................................................................................................................................................................. 4

Startup

........................................................................................................................................................................... 6

Configuring the Yealink EXP20 LCD Expansion Module ............ 7

Switch ........................................................................................................................................................................... 8

Line ................................................................................................................................................................................ 9

Speed Dial ................................................................................................................................................................ 10

Busy Lamp Field (BLF) .......................................................................................................................................... 11

Voice Mail ................................................................................................................................................................ 12

Direct Pickup ........................................................................................................................................................... 13

Group Pickup .......................................................................................................................................................... 14

Call Park .................................................................................................................................................................... 15

Intercom ................................................................................................................................................................... 16

DTMF .......................................................................................................................................................................... 17

Prefix .......................................................................................................................................................................... 18

Local Group ............................................................................................................................................................. 19

XML Group............................................................................................................................................................... 20

XML Browser ........................................................................................................................................................... 21

LDAP ........................................................................................................................................................................... 22

Conference .............................................................................................................................................................. 23

Forward ..................................................................................................................................................................... 24

Transfer ..................................................................................................................................................................... 25

Hold ............................................................................................................................................................................ 26

DND ............................................................................................................................................................................ 27

ReCall ......................................................................................................................................................................... 28

SMS ............................................................................................................................................................................. 29

Record ....................................................................................................................................................................... 30

URL Record .............................................................................................................................................................. 31

Multicast Paging .................................................................................................................................................... 32

Group Listening ..................................................................................................................................................... 33

Private Hold ............................................................................................................................................................. 34

Hot Desking ............................................................................................................................................................ 35

ACD ............................................................................................................................................................................. 36

Zero Touch............................................................................................................................................................... 37

URL .............................................................................................................................................................................. 38

Phone Lock .............................................................................................................................................................. 39

Retrieve Park ........................................................................................................................................................... 40

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Yealink EXP20 User Guide

Directory ................................................................................................................................................................... 41

Using the Yealink EXP20 LCD Expansion Module ..................... 43

Using the Line Key ................................................................................................................................................ 43

Adjusting the Contrast ........................................................................................................................................ 44

Adjusting the Backlight ...................................................................................................................................... 45

Using the Busy Lamp Field ................................................................................................................................ 46

Resetting the Yealink EXP20 LCD Expansion Module ............................................................................ 46

Troubleshooting ........................................................................... 49

viii

Getting Started

This chapter provides basic installation instructions and information for obtaining the best

performance with the EXP20 LCD expansion module. Topics include:

 Packaging Contents

 Physical Features

 LED Instructions

 Installation

 Startup

Packaging Contents

Getting Started

The following items are included in your package:

 LCD Expansion Module

 Stand

 Connecting Sheet

 Connecting Cord

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Yealink EXP20 User Guide

Item

Description

①

Ext Keys

Assign various features to these keys.

②

Page Key

Presses this key to navigate to a different page to view

additional keys.

③

LED Indicators

Indicate the Ext key status. For more information, refer to LED

Instructions on page 3.

④

LCD Screen

Shows key feature label, key feature icon and the label of

switch key (such as List 1 or List 2) indicating the current page

at the top of the LCD screen.

 Screws x 4

 Quick Start Guide

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

Physical Features

The main physical features of the EXP20 LCD expansion module are LCD screen, Ext keys, LED

indicators, Ext in jack, Ext out jack and power interface.

The main physical features of the EXP20 LCD expansion module are described as below:

2

Item

Description

⑤

Ext out Jack

Connects the supplied cord to the Ext in jack on the next

expansion module.

⑥

Power Interface

Connects a power adapter to the expansion module. When

more than two expansion modules are connected to a single

host phone, you need to connect a power adapter to any one

of the expansion modules.

⑦

Ext in Jack

Connects the supplied cord to the Ext jack on the host phone

or to the Ext out jack on the prior expansion module.

LED Instructions

LED Status

Description

Solid green

The line is in conversation.

The line is seized.

Fast flashing green

The line receives an incoming call.

Slow flashing green

The call is placed on hold.

Off

The line is inactive.

LED Status

Description

Solid green

The monitored user is idle.

Fast flashing red

The monitored user receives an incoming call.

Solid red

The monitored user is talking.

The monitored user’s conversation is placed on hold

(This LED status requires server support).

The monitored user is dialing.

The call is parked against the monitored user’s phone

number.

Off

The monitored user does not exist.

Ext key LED (configured as a line key)

Getting Started

Ext key LED (configured as a BLF key)

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Yealink EXP20 User Guide

Up to six expansion modules can be connected to an IP phone.

Installation

The EXP20 LCD expansion module applies to Yealink SIP-T29G/T27P/T27G IP phones. To

connect the EXP20 to the phone more easily, unplug the phone stand from the IP phone before

installation.

Note

To

unplug

1. Unplug the power adapter and Ethernet cable from the IP phone.

2. Unplug the handset attached to the IP phone.

3. Turn the IP phone over and lay it on a non-slip, flat surface.

4. Unplug the stand from the IP phone.

the stand from the IP phone:

To install the

1. Turn the IP phone and the expansion module over and lay them on a flat, non-slip surface.

2. Position the expansion module on the left of the IP phone.

3. Connect the EXP20 LCD expansion module and the IP phone using the supplied connecting

sheet and screws.

EXP20 LCD expansion module:

4

Getting Started

Connecting an expansion module on a single host phone is shown as below:

4. Follow the same step (1-3) to add an expansion module

Connecting two expansion modules on a single host phone is shown as below

.

:

5

Yealink EXP20 User Guide

Power is automatically transferred from the host phone to the expansion module(s) upon
connection. If you want to use more than two expansion modules on a single phone, you need to
connect an additional power adapter to any one of the expansion modules.

5. Connect the Ext jack on the host phone and the Ext in jack of the first module using one

supplied cord. If you want to connect another module, connect the Ext out jack of the first

module and the Ext in jack of the second module using one supplied cord. Connecting two

expansion modules on a single host phone is shown as below:

Note

To attach the stand of the expansion module:

Startup

After the EXP20 LCD expansion module is powered on, the LCD screen of the EXP20 LCD

expansion module will display “Loading…”. After a short time, the loading screen will disappear,

and then you can assign the desired feature to the EXP20 LCD expansion module.

6

Configuring the Yealink EXP20 LCD Expansion Module

Configuring the Yealink EXP20 LCD Expansion

Module

The EXP20 LCD expansion module supports 40 Ext keys. You can access additional 20 keys via

the page key. Each key can be assigned a feature using the configuration files, via phone user

interface or web user interface. For more information on using the configuration files to assign a

feature, refer to

Long press the desired key, the phone LCD screen will enter the setting screen of this key. Then

you can assign the desired feature to this key.

To log into the web user interface, you should obtain the IP address of the host phone in

advance. Press the OK key on the keypad when the host phone is idle, and the LCD screen of the

host phone will display the IP address and some other information. Enter the IP address (e.g.,

http://192.168.0.10 or 192.168.0.10) in the address bar of the web browser on your PC. The

default user name and password are both “admin” (case-sensitive).

Yealink Auto Provisioning Guide

.

This chapter provides you with the instructions of assigning a feature to an Ext key via web user

interface. Topics include:

 Switch

 Line

 Speed Dial

 Busy Lamp Field (BLF)

 Voice Mail

 Direct Pickup

 Group Pickup

 Call Park

 Intercom

 DTMF

 Prefix

 Local Group

 XML Group

 XML Browser

 LDAP

 Conference

 Forward

 Transfer

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Yealink EXP20 User Guide

Quick access features like intercom and voice mail should be configured on your SIP server in

later and SIP-T27G IP phone running firmware 81 or later.

 Hold

 DND

 ReCall

 SMS

 Record

 URL Record

 Multicast Paging

 Group Listening

 Private Hold

 Hot Desking

 ACD

 Zero Touch

 URL

 Phone Lock

 Retrieve Park

 Directory

Note

advance to make sure they will work on your phone. Contact your system administrator for more
information.

If more than one expansion module is connected, select the desired expansion module from the
pull-down list of Expansion Key.

Feature codes may vary between different servers.

The available key features may vary between different phone firmware versions. This guide
introduces key features available on the SIP-T29G/T27P IP phone running firmware version 80 or

Switch

EXP20 supports 20 physical keys and two pages, providing a total of 40 keys. The 20 additional

keys are sorted from 21 to 40 and displayed on the second page. You can configure the first Ext

key (key 1) as the switch key. The key 21 will be configured as the switch key automatically when

you configure the first Ext key (key 1) as the switch key. You can then press the first key to view

the 20 additional keys or the key 21 to return to the first page.

To configure the first Ext key as the switch key:

1. Click on Dsskey->Ext Key.

2. In the first Ext key field, select Switch from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

8

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Switch”. The default label of key 21 is “List 2”.

4. Click Confirm to accept the change.

Line

You can configure an Ext key as the line key. You can press this key to enter the pre-dialing

screen when the phone is idle. You can also press this key to place a new call during an active

call, and then the original call is placed on hold. For more information on using the line key, refer

to Using the Line Key on page 43.

To configure an Ext key as the line key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Line from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label the extension number of the selected line (e.g., 1001).

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Yealink EXP20 User Guide

4. Select the desired line to apply this key from the pull-down list of Line.

5. Click Confirm to accept the change.

Speed Dial

You can configure an Ext key as the speed dial key. Then you can dial out the pre-defined

number using the specified line by pressing the speed dial key.

To configure an Ext key as the speed dial key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Speed Dial from the pull-down list of Type.

3. Enter the desired number you want to dial out in the Value field (e.g., 1037).

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the number specified in the Value field.

10

Configuring the Yealink EXP20 LCD Expansion Module

5. Select the desired line to apply this key from the pull-down list of Line.

6. Click Confirm to accept the change.

Busy Lamp Field (BLF)

Busy Lamp Field (BLF) allows you to monitor the status changes of a user. You can configure an

Ext key as the BLF key, which allows you to monitor the status (idle, ringing or busy) of the

pre-defined phone user. You can also pick up the incoming call of the monitored user directly by

pressing the BLF key. For more information on using the BLF feature, refer to Using the Busy

Lamp Field on page 46.

To configure an Ext key as the BLF key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select BLF from the pull-down list of Type.

3. Enter the phone number you want to monitor in the Value field.

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the value specified in the Value field (e.g., 1011).

5. Select the desired line to apply this key from the pull-down list of Line.

11

Yealink EXP20 User Guide

6. Enter the BLF pickup code in the Extension field.

7. Click Confirm to accept the change.

Voice Mail

You can configure an Ext key as the voice mail key. Then you can press the voice mail key when

the phone is idle to dial out the pre-defined voice mail access code and follow the voice prompt

to listen to voice mails.

To configure an Ext key as the voice mail key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Voice Mail from the pull-down list of Type.

3. Enter the voice mail access code in the Value field (e.g., 88).

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Voice Mail”.

12

Configuring the Yealink EXP20 LCD Expansion Module

5. Select the desired line to apply this key from the pull-down list of Line.

6. Click Confirm to accept the change.

Direct Pickup

You can configure an Ext key as the direct pickup key. If you press the direct pickup key when

the specified phone number receives an incoming call, the incoming call will be answered on

your phone.

To configure an Ext key as the direct pickup key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Direct Pickup from the pull-down list of Type.

3. Enter the directed call pickup code followed by the specific extension you want to pick up

calls from in the Value field (e.g., *971037).

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “DPickup”.

13

Yealink EXP20 User Guide

5. Select the desired line to apply this key from the pull-down list of Line.

6. Click Confirm to accept the change.

Group Pickup

Group pickup allows you to pick up incoming calls within a pre-defined group of phone

numbers.

You can configure an Ext key as the group pickup key. When any number within the group

receives an incoming call, you can press the group pickup key to pick up the incoming call. If the

numbers within the group receive multiple incoming calls, the first incoming call will be picked

up.

To configure an Ext key as the group pickup key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Group Pickup from the pull-down list of Type.

3. Enter the group call pickup code in the Value field (e.g., *98).

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “GPickup”.

14

Configuring the Yealink EXP20 LCD Expansion Module

5. Select the desired line to apply this key from the pull-down list of Line.

6. Click Confirm to accept the change.

Call Park

The call park feature allows you to park a call at a special extension and then retrieve it on any

other phone in the system.

You can configure an Ext key as the call park key. Then you can park a call at an extension by

pressing the call park key. The call is placed on hold and can be retrieved on another IP phone.

To configure an Ext key as the call park key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Call Park from the pull-down list of Type.

3. Enter the call park feature code in the Value field (e.g., *68).

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Call Park”.

15

Yealink EXP20 User Guide

5. Select the desired line to apply this key from the pull-down list of Line.

6. Click Confirm to accept the change.

Intercom

You can configure an Ext key as the intercom key. You can connect to the operator or the

secretary quickly by pressing the intercom key. This feature is especially helpful in an office

environment.

To configure an Ext key as the intercom key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Intercom from the pull-down list of Type.

3. Enter the extension number in the Value field (e.g., 121).

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Intercom”.

16

Configuring the Yealink EXP20 LCD Expansion Module

5. Select the desired line to apply this key from the pull-down list of Line.

6. Click Confirm to accept the change.

DTMF

You can configure an Ext key as the DTMF key. If you press the DTMF key during an active call,

the phone will send the pre-defined DTMF digits.

To configure an Ext key as the DTMF key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select DTMF from the pull-down list of Type.

3. Enter the desired DTMF digits in the Value field (e.g., 123A).

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

4. Enter the desired value in the Label field or leave it blank.

17

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “DTMF”.

5. Click Confirm to accept the change.

Prefix

You can configure an Ext key as the prefix key. If you press the prefix key when the phone is idle,

the phone will enter the dialing screen and display the prefix number you specified. You can

enter other digits and then dial out.

To configure an Ext key as the prefix key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Prefix from the pull-down list of Type.

3. Enter the prefix number you want to add before the dialed number in the Value field (e.g.,

0592).

4. Enter the desired value in the Label field or leave it blank.

18

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

“Prefix: ‘the value specified in the Value field’ ” (e.g., Prefix:0592) for SIP-T29G IP phones or

“Prefix” for and SIP-T27P/T27G IP phones.

5. Click Confirm to accept the change.

Local Group

You can configure an Ext key as the local group key. Then you can press the local group key to

access the pre-defined contact group in the local directory quickly.

To configure an Ext key as the local group key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Local Group from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “the selected group name” (e.g., All Contacts).

19

Yealink EXP20 User Guide

4. Select the desired contact group from the pull-down list of Line.

5. Click Confirm to accept the change.

XML Group

You can configure an Ext key as the XML group key. If you press the XML group key when the

phone is idle, the phone will automatically download the corresponding phonebook from the

server and display phonebook entries on the LCD screen of the phone. To use this key feature,

you need to configure the remote phonebook on the phone in advance.

To configure an Ext key as the XML group key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select XML Group from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “the selected XML group name” (e.g., Sales).

20

Configuring the Yealink EXP20 LCD Expansion Module

4. Select the desired XML group from the pull-down list of Line.

5. Click Confirm to accept the change.

XML Browser

XML browser is a simple browser feature, which is based on XML language and http/https

service. Users can use tools such as PHP, JavaScript, etc., accordance with the established syntax,

to generate server-side features dynamically to meet the needs of the user xml file, and then

download the xml file to a SIP phone by http/https, so as to realize a simple browser feature.

Using XML browser, users can achieve the personalized features, such as weather information,

stock information, date of inquiry, access to address book, configuration of the terminal

parameters and so on.

To configure an Ext key as the XML browser key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select XML Browser from the pull-down list of Type.

3. Enter the URL you want to set as the XML Browser in the Value field (e.g.,

http://10.3.6.17/xmlBro.xml).

4. Enter the desired value in the Label field or leave it blank.

21

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “XML Browser”.

5. Click Confirm to accept the change.

LDAP

LDAP (Lightweight Directory Access Protocol) is an application protocol for accessing and

maintaining information services of the distributed directory over an IP network. The IP phone

can be configured to interface with a corporate directory server that supports LDAP.

You can configure an Ext key as the LDAP key. If you press the LDAP key when the phone is idle,

the IP phone will download and display the LDAP entries on the LCD screen of the phone. For

more information on LDAP, refer to

To configure an Ext key as the LDAP key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select LDAP from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

LDAP Phonebook on Yealink IP Phones

.

22

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “LDAP”.

4. Click Confirm to accept the change

Conference

You can configure an Ext key as the conference key. When you are in a call, you can press the

conference key to invite a third party to join a conference.

To configure an Ext key as the conference key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Conference from the pull-down list of Type.

3. Enter the phone number or extension of the destination party in the Value field or leave it

blank.

If a phone number is configured, you can dial out the number by pressing the conference

key when the phone is idle or during a call.

4. Enter the desired value in the Label field or leave it blank.

23

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Conference”.

5. Click Confirm to accept the change.

Forward

You can configure an Ext key as the forward key. When the phone is idle, you can press the

forward key to enter the setting screen of the call forward feature. When the phone receives an

incoming call, you can press the forward key to forward the incoming call to the pre-defined

number (if configured).

To configure an Ext key as the forward key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Forward from the pull-down list of Type.

3. Enter the destination number you want to forward the incoming calls to in the Value field

or leave it blank.

4. Enter the desired value in the Label field or leave it blank.

24

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “FWD”.

5. Click Confirm to accept the change.

Transfer

You can configure an Ext key as the transfer key. Then you can perform a Blind, Semi-Attended

or Attended transfer by pressing the transfer key during a call.

To configure an Ext key as the transfer key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Transfer from the pull-down list of Type or leave it blank.

3. Enter the destination number you want to transfer the calls to in the Value field or leave it

blank.

If a destination number is configured, the active call will be directly transferred by pressing

the transfer key without consulting.

4. Enter the desired value in the Label field or leave it blank.

25

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label (“Transfer” for SIP-T29G IP phones; “Tran” for SIP-T27P/T27G IP phones).

5. Click Confirm to accept the change.

Hold

You can configure an Ext key as the hold key. Then you can place a call on hold or retrieve a held

call by pressing the hold key.

To configure an Ext key as the hold key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Hold from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

26

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “Hold”.

4. Click Confirm to accept the change.

DND

You can configure an Ext key as the DND key. If the DND key mode is configured to “phone”,

press the DND key when the phone is idle to activate or deactivate DND on a per-line basis. If

the DND key mode is configured to “custom”, press the DND key when the phone is idle to

enter the DND setting screen. For more information on DND mode, refer to the

(DND)

section of

To configure an Ext key as the DND key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select DND from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

Yealink phone-specific user guide

Do Not Disturb

.

27

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “DND”.

4. Click Confirm to accept the change.

ReCall

You can configure an Ext key as the recall key. When the phone is idle, you can place a call back

to the caller of the last incoming call by pressing the recall key.

To configure an Ext key as the recall key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select ReCall from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

28

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “ReCall”.

4. Click Confirm to accept the change.

SMS

You can configure an Ext key as the SMS key. Then you can access the text message screen more

quickly and easily by pressing the SMS key.

To configure an Ext key as the SMS key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select SMS from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

29

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “SMS”.

4. Click Confirm to accept the change.

Record

Call recording allows users to record calls. Normally, there are 2 main methods to trigger a

recording on a certain server. We call them record and URL record. Record is for the phone to

send the server a SIP INFO message containing a specific header. URL record is for the phone to

send an HTTP URL to the server. The server processes these messages and decides to start or

stop a recording.

You can configure an Ext key as the record key. Then you can record calls using the record

method by pressing the record key. For more information on URL record, refer to URL Record on

page 31.

To configure an Ext key as the record key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Record from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

30

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Record”.

4. Click Confirm to accept the change.

URL Record

You can configure an Ext key as the URL record key. Then you can record calls using the URL

record method by pressing the URL record key.

To configure an Ext key as the URL record key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select URL Record from the pull-down list of Type.

3. Enter the URL in the Value field (e.g., http://192.168.0.1).

4. Enter the desired value in the Label field or leave it blank.

31

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “URL Record”.

5. Click Confirm to accept the change.

Multicast Paging

Multicast paging feature allows you to quickly and easily announce time sensitive

announcements to people within the multicast group. You can configure a multicast paging key

on the phone, which allows you to send Real Time Transport Protocol (RTP) streams to the

pre-configured multicast address(es) without involving SIP signaling.

To configure an Ext key as the multicast paging key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Multicast Paging from the pull-down list of Type.

3. Enter the multicast IP address and port number in the Value field (e.g., 224.5.6.20:10008).

The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.

4. Enter the desired value in the Label field or leave it blank.

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

“the value specified in the Value field” (e.g., 224.5.6.20:10008).

32

5. Enter the desired channel in the Extension field.

Configuring the Yealink EXP20 LCD Expansion Module

The valid channel ranges from 0 to 30.

6. Click Confirm to accept the change.

Group Listening

You can configure an Ext key as the group listening key. Then you can activate the

Speakerphone mode and Handset/Headset mode at the same time by pressing the group

listening key. It is suitable for the group conversation which has more than one person at one

side. You are able to speak and listen using the handset/headset; meanwhile the others nearby

can only listen using the speaker. You can get back to the previous mode by pressing the group

listening key again.

To configure an Ext key as the group listening key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Group Listening from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

33

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “Group Listening”.

4. Click Confirm to accept the change.

Private Hold

You can configure an Ext key as the private hold key. Then you can private hold a shared call by

pressing the Private hold key when using Shared Call Appearance.

To configure an Ext key as the private hold key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Private Hold from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

34

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Private Hold”.

4. Click Confirm to accept the change.

Hot Desking

Hot Desking is regularly used in places where not all employees are in the office at the same

time, or not in the office for a very long time, which means actual personal offices would be

often vacant, consuming valuable space and resources.

Hot Desking is a phone feature that allows users to login or logout an IP phone. You can

configure an Ext key as the hot desking key. Press the hot desking key to clear registration

configurations of all accounts on the IP phone, and then register your account on line 1.

To configure an Ext key as the hot desking key:

5. Click on Dsskey->Ext Key.

6. In the desired Ext key field, select Hot Desking from the pull-down list of Type.

7. Enter the desired value in the Label field or leave it blank.

35

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “Hot Desking”.

8. Click Confirm to accept the change.

ACD

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. ACD

feature on the IP phone allows the ACD system to distribute large volumes of incoming calls to

the registered IP phone users.

To log into the ACD system, you should configure an Ext key as the ACD key in advance.

To configure an Ext key as the ACD key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select ACD from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

36

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “ACD”.

4. Click Confirm to accept the change.

Zero Touch

You can configure an Ext key as the zero touch key. Then you can configure auto provisioning

and network settings quickly by pressing the zero touch key when the phone is idle.

To configure an Ext key as the zero touch key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Zero Touch from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

37

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “Zero Touch”.

4. Click Confirm to accept the change.

URL

You can configure an Ext key as the URL key. If you press the URL key when the phone is idle, the

phone will send HTTP requests to a web server.

To configure an Ext key as the URL key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select URL from the pull-down list of Type.

3. Enter the URL of the web server you want to access in the Value field (e.g.,

http://192.168.0.1).

4. Enter the desired value in the Label field or leave it blank.

38

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will

display the default label “URL”.

5. Click Confirm to accept the change.

Phone Lock

You can configure an Ext key as the phone lock key. After you enable the phone lock feature,

you can press the phone lock key to immediately lock your phone instead of long pressing the

pound key.

To configure an Ext key as the phone lock key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Phone Lock from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

39

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “Phone Lock”.

4. Click Confirm to accept the change.

Retrieve Park

You can configure an Ext key as the retrieve park key. You can press the retrieve park key to

retrieve a parked call.

To configure an Ext key as the retrieve park key:

1. Click on Dsskey->Ext Key.

2. In the desired Ext key field, select Retrieve Park from the pull-down list of Type.

3. Enter the desired value in the Label field or leave it blank.

40

Configuring the Yealink EXP20 LCD Expansion Module

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “Directory”.

4. Click Confirm to accept the change.

Directory

You can configure an Ext key as the directory key. You can press the directory key to quickly

access the local directory, call history, LDAP and remote phonebook.

To configure an Ext key as the directory key:

5. Click on Dsskey->Ext Key.

6. In the desired Ext key field, select Directory from the pull-down list of Type.

7. Enter the desired value in the Label field or leave it blank.

41

Yealink EXP20 User Guide

If you leave this field blank, the LCD screen of the EXP20 LCD expansion module will display

the default label “Directory”.

8. Click Confirm to accept the change.

42

Using the Yealink EXP20 LCD Expansion Module

Using the Yealink EXP20 LCD Expansion Module

The use of Ext keys on the EXP20 LCD expansion module and DSS keys on the host phone are

almost the same. For more information on using DSS keys on the host phone, refer to the

keys

section of

Yealink phone-specific user guide

.

This chapter provides you the following operating instructions for the EXP20 LCD expansion

module. Topics include:

 Using the Line Key

 Adjusting the Contrast

 Adjusting the Backlight

 Using the Busy Lamp Field

 Resetting the Yealink EXP20 LCD Expansion Module

DSS

Using the Line Key

You can configure line keys to associate with a line for the connected EXP20 LCD expansion

module. Incoming calls to the line can be distributed evenly among the available line keys both

on the host phone and the connected EXP20 LCD expansion module. Each line key on the

connected EXP20 LCD expansion module can only handle one call. For more information on

configuring an Ext key as the line key, refer to Line on page 9.

You can use a line key to do the following:

 Placing a call

 Answering a call

 Placing an active call on hold

 Resuming a held call

To place a call using the line key:

1. Press the line key on the EXP20 LCD expansion module, the host phone will enter the

pre-dialing screen.

2. Enter the desired number using the keypad on the host phone.

3. Press , or the Send soft key on the host phone.

For more information on placing a call, refer to the

phone-specific user guide

.

Placing Calls

section of

Yealink

43

Yealink EXP20 User Guide

The line configured on the phone takes precedence over that configured on the expansion

new incoming call.

To answer a call using the line key:

1. Press the line key with the fast flashing green LED indicator on the EXP20 LCD expansion

module.

Note

module. Only if the line configured on the phone is being used, the LED indicator of the line key
corresponding to this line on the expansion module will fast flash green when this line receives a

To place an active call on hold using the line key:

1. Press the line key corresponding to line with the active call you want to place on hold.

To resume a held call using the line key:

1. Press the line key corresponding to line with the held call you want to resume.

You can also view the line status through LED indicators. For more information on line key LED

indications, refer to LED Instructions on page 3.

Adjusting the Contrast

You can adjust the contrast on the LCD screen of the EXP20 LCD expansion module via the host

phone. The contrast on the LCD screen of the EXP20 LCD expansion module is synchronized

with that of the host phone.

To adjust the contrast on the LCD screen of the EXP20 LCD expansion module connected

to the host phone:

1. Press Menu->Basic->Display->Contrast Setting on the host phone.

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

on the host phone.

The default contrast level is 6.

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

phone.

For more information on adjusting the contrast, refer to the

44

Contrast

section of

Yealink

Using the Yealink EXP20 LCD Expansion Module

phone-specific user guide

.

Adjusting the Backlight

You can adjust the backlight on the LCD screen of the EXP20 LCD expansion module via the host

phone. The backlight on the LCD screen of the EXP20 LCD expansion module is synchronized

with that of the host phone.

Backlight has three options:

Backlight Active Level: The intensity of the LCD screen when the phone is activity. You can

choose a value to represent the intensity.

Backlight Inactive Level: The intensity of the LCD screen when the phone is inactivity. You can

choose a low intensity or turn off the backlight. It is not applicable to SIP-T27P/T27G IP phones.

Backlight Time: The delay time to change the intensity of the LCD screen when the phone is

inactivity. You can choose a designated time to change the intensity or turn on the backlight

permanently.

You can adjust the backlight on the LCD screen of the EXP20 LCD expansion module from the

following options:

 Always On: Backlight is on permanently.

 Always Off: Backlight is off permanently. It is only applicable to SIP-T27P/T27G IP phones.

 15s, 30s, 1min, 2min, 5min, 10min or 30min: Backlight is turned off when the phone is

inactive after the designated time (in seconds).

To adjust the backlight on the LCD screen of the EXP20 LCD expansion module connected

to the host phone (Taking the SIP-T29G IP phone as an example for reference):

1. Press Menu->Basic->Display->Backlight on the host phone.

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

Active Level field on the host phone.

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

Inactive Level field on the host phone.

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

Time field on the host phone.

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

45

Yealink EXP20 User Guide

phone.

For more information on adjusting the backlight on the phone, refer to the

Yealink phone-specific user guide

.

Using the Busy Lamp Field

The busy lamp field (BLF) feature allows you to monitor the status change of users through BLF

LED indicators. For example, you can configure a BLF key on the connected EXP20 LCD

expansion module to monitor the status of a friend’s line (busy or idle). For more information on

configuring an Ext key as the BLF key, refer to Busy Lamp Field (BLF) on page 11.

The BLF key LED illuminates solid red when the monitored line is in use. The BLF key LED

illuminates solid green when the monitored line is idle. For more information on BLF key LED

indications, refer to LED Instructions on page 3.

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

is idle and pick up calls that are received on the monitored line. When there is an active call on

the host phone, you can transfer the active call to the monitored phone number directly by

pressing the BLF key.

For more information on using BLF feature on the phone, refer to the

section of

Yealink phone-specific user guide

Backlight

Busy Lamp Field (BLF)

.

section of

Resetting the Yealink EXP20 LCD Expansion Module

You can reset the EXP20 LCD expansion module to clear all configurations by resetting the host

phone. The reset process of the EXP20 LCD expansion module is synchronized with the host

phone.

To reset the EXP20 LCD expansion module connected to the host phone:

1. Press Menu->Advanced (default password: admin) ->Reset Config->Reset to factory.

2. Press the Reset soft key.

The LCD screen prompts the following warning:

46

3. Press the OK soft key.

Note

Reset of the EXP20 LCD expansion module can lead to resetting the host phone. And then all

after resetting.

Using the Yealink EXP20 LCD Expansion Module

The LCD screen prompts “Welcome Initializing…Please wait”.

The host phone and the EXP20 LCD expansion module will be reset to factory settings

successfully after startup.

custom settings on the host phone and the EXP20 LCD expansion module will be overwritten

47

Yealink EXP20 User Guide

48

Troubleshooting

This chapter provides general troubleshooting information to help you solve the problems you

might encounter when using your EXP20.

If you require additional information or assistance with your EXP20, contact your system

administrator.

Why is the EXP20 LCD screen blank?

 Ensure that the Ext in/out jacks on the EXP20 LCD expansion module are properly plugged

using the supplied connecting cord. For more information, refer to Installation on page 4.

 Ensure that the contrast of the LCD screen is in a comfortable level. For more information,

refer to Adjusting the Contrast on page 44.

Troubleshooting

49