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 “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-phone 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
Yealink phone-specific user guide, available online:
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage.
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.