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Change the audio codec in Exchange Server

Applies to: Exchange Server 2013, Exchange Server 2016

Unified Messaging can use one of four codecs for creating voice mail messages: MP3, Windows Media Audio (WMA), Group System Mobile (GSM) 06.10, and G.711 Pulse Code Modulation (PCM) Linear. By default, when you create a Unified Messaging (UM) dial plan, the UM dial plan uses the MP3 audio codec to record voice messages. The MP3 audio format is a popular audio format that is used across multiple operating systems, email clients, and MP3 players. After the UM dial plan is created, you can configure the UM dial plan to use one of the other audio formats including the WMA, GSM 06.10, or G.711 PCM Linear audio codecs. To listen to the voice message, a mobile phone or computer must have a compatible audio software application installed.

For additional tasks related to UM dial plans, see UM dial plan procedures in Exchange Server.

What do you need to know before you begin?

Tip

Having problems? Ask for help in the Exchange forums. Visit the forums at Exchange Server.

Use the EAC to change the audio codec on a Unified Messaging dial plan

  1. In the EAC, navigate to Unified Messaging > UM dial plans.

  2. In the list view, select the UM dial plan you want to modify, and then click Edit Edit icon..

  3. On the UM dial plan page, click Configure.

  4. In Settings, under Audio codec, use the drop-down list to select one the following:

    • MP3

    • WMA

    • GSM

    • G711

  5. Click Save.

Use the Shell to change the audio codec on a Unified Messaging dial plan

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