User Guide

Yealink EXP40 User Guide
44
Using the Yealink EXP40 Expansion Module
The use of Ext keys on the EXP40 expansion module and DSS keys on the IP phone are almost
the same. For more information on using DSS keys on the IP phone, refer to Yealink
phone-specific user guide , available online:
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage.
This chapter provides you the following operating instructions for the EXP40 expansion module.
Topics include:
 Using the Line Key
 Adjusting the Contrast
 Adjusting the Backlight
 Using the Busy Lamp Field
 Resetting the Yealink EXP40 Expansion Module
Using the Line Key
You can configure line keys to associate with a line for the connected EXP40 expansion module.
Incoming calls to the line can be distributed evenly among the available line keys both on the
host phone and the connected EXP40 expansion module. Each line key on the connected EXP40
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 EXP40 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 Placing Calls section of Yealink
phone-specific user guide, available online:
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage.