User Guide

Configuring the Yealink EXP40 Expansion Module
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If you leave this field blank, the LCD screen of the EXP40 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.