User Guide

Yealink EXP20 User Guide
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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).