Monday, 20 February 2012

Turn off 2nd incoming call alert - Call Waiting in Lync

The setting is held in the current windows sound scheme, which is held in the registry under HKCU:\AppEvents\Schemes\Apps\Communicator
When the Data field is full it plays that sound. If no sound is set the Data field is empty.
Once you know this you can use GPO to change the registry setting, or use PowerShell to script the change.
To list the current settings:

Get-itemproperty -Path "HKCU:\AppEvents\Schemes\Apps\Communicator\Communicator_secondcall\.Current”

To remove this value, so that no sound is played.

Clear-Itemproperty -Path "HKCU:\AppEvents\Schemes\Apps\Communicator\Communicator_secondcall\.Curent\" -name "(Default)"

Once that command has run the setting will be blank, and no sound will be played.

The same principle applies for changing any of the other Lync sound settings.
Note: It my reset if the user changes the sound theme (as users can have different application sounds in each theme. If you want it to apply to all themes you should blank out the setting for all themes, not just .Current

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