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UCM 6.1 SIP Trunk - MTP Preferred Originating Codec

colan.haisell
Beginner
Beginner

G'day,

I have a question regarding SIP Trunk configuration/capability. My SIP trunk is configured with Media Termination Point Required. When configuring the MTP Preferred Originating Codec if I choose 711alaw does that mean that G.728 will also work across this SIP Trunk?

Thanks in advance,

Col

1 REPLY 1

Based on a TAC case I have open at the moment the answer appears to be no. Apparently, once the MTP is allocated a final codec selection is chosen between the MTP and the calling endpoint. The final called party must support that codec or a transcoder will be invoked.

I'll try to remember to update this thread in a few days based on the final answer from the BU. If not bump it to remind me or have TAC query 615746593.

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