User Guide

Configuring the Yealink EXP40 Expansion Module
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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.