[cisco-voip] Can Cisco UCM Support Multiple MTPs on same call?

[Ryan Ratliff]

Remember MTP != Transcoder (but a transcoder can do some MTP services)

But in general yes, there are some cases where you will end up with  
an MTP and transcoder invoked for the same call.  Sometimes this is  
desired behavior, other times not.

-Ryan

On Oct 1, 2008, at 3:26 PM, Matt Slaga ((US)) wrote:

If I have a call coming in through SIP requiring MTP for codec  
translation, can I also have an MTP assigned to transcode?



I.e.,

Incoming call on Direct SIP Trunk to UCM, MTP is required on the trunk.



Call is coming in G711 from SIP trunk, however Cisco UCM side is  
using G729.



In theory, UCM SIP trunk would negotiate MTP resources required for  
the SIP trunk.



Also, UCM call coming from a remote phone or remote voice gateway at  
G729 would negotiate an MTP resource for transcoding.











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