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After the transcoding sessions are configured on the 28xx router, unable to add the transcoder on the Cisco CallManager 4.x, and the "Device in use already" error message appears

Core Issue

On a 2651XM router, after a few transcoding sessions are created in order to configure Xcoder in the Cisco CallManager Admin page in the Cisco CallManager 4.x with a High Density Voice Network Module (NM HDV), it returns the Device in use already error message.

Resolution

This is a design limitation. On the NM HDV, it is not possible to configure both the Media Termination Point (MTP) and a transcoder. If a transcoder is to be added, delete the MTP from the Cisco CallManager Admin page and add the transcoder. Make sure to add the new transcoder to the same media resource group (MRG) as the MTP.

Refer to Configuring Enhanced Conferencing and Transcoding for Voice Gateway Routers documents for more information.

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