Configure the Audio Codec on a UM Dial Plan
Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2
Unified Messaging (UM) servers can use one of four codecs for creating voice messages: MP3, Windows Media Audio (WMA), Group System Mobile (GSM) 06.10, and G.711 Pulse Code Modulation Linear. By default, when you create a UM dial plan, the UM dial plan uses the MP3 audio codec. However, after the UM dial plan is created, you can configure the UM dial plan to use the WMA, GSM 06.10 or G.711 PCM Linear audio codecs.
Looking for other management tasks related to UM dial plans? Check out Managing UM Dial Plans.
Prerequisites
A UM dial plan has been created. For detailed steps, see Create a UM Dial Plan.
Use the EMC to change the audio codec on a Unified Messaging dial plan
You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "UM dial plans" entry in the Unified Messaging Permissions topic.
In the console tree, navigate to Organization Configuration > Unified Messaging.
In the work pane, on the UM Dial Plans tab, select the UM dial plan you want to modify.
In the action pane, click Properties.
On the dial plan Properties page, click the Settings tab.
On the Settings tab, use the Audio codec list to select the audio codec you want.
Click OK to accept your changes.
Use the Shell to change the audio codec on a Unified Messaging dial plan
You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "UM dial plans" entry in the Unified Messaging Permissions topic.
This example sets the audio codec on a UM dial plan named MyUMDialPlan to G.711.
Set-UMDialPlan -Identity MyUMDialPlan -AudioCodec G711
This example sets the audio codec on a UM dial plan named MyUMDialPlan to WMA.
Set-UMDialPlan -Identity MyUMDialPlan -AudioCodec Wma
For more information about syntax and parameters, see Set-UMDialplan.
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