[cisco-voip] Transcoding Meeting Place

[Divin John (dijohn)]

Meeting place MRGL needs the transcoder. CUCM tries to invoke the xcoder on the HEAVY weight codec side (G711 in this case).

Regards,
Divin

From: Divin John <dijohn at cisco.com<mailto:dijohn at cisco.com>>
Date: Tuesday, 23 July 2013 12:50 PM
To: "Schmitz, Daniel" <Daniel.Schmitz at didas.de<mailto:Daniel.Schmitz at didas.de>>, voip puck <cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>>
Subject: Re: [cisco-voip] Transcoding Meeting Place

I would say, CUCM Germany. Also, note: normal transcoder support only G711 to any other codec. One leg has to be G711. To remove this restriction configure Universal Transcoders (any codec to any codec) "dspfarm profile 3 transcode universal"

Also, make sure, Meeting place to Transcoder is G711
Transcoder to SIP Trunk is G729.
China Phone to SIp Trunk is G729.

Regards,
Divin

From: <Schmitz>, Daniel <Daniel.Schmitz at didas.de<mailto:Daniel.Schmitz at didas.de>>
Date: Tuesday, 23 July 2013 12:42 PM
To: voip puck <cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>>
Subject: [cisco-voip] Transcoding Meeting Place

Hi all,
a customer has the following setup.


-       Across the MPLS, G.729 should be used

-       Meeting Place is just configured for High Capacity (G.711) only

-       CUCM has an IOS transcoder with the following configuration
dspfarm profile 3 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
codec g729br8
maximum sessions 6
associate application SCCP

For some reason it is not possible to call from China to the Meeting Place, as soon as I allow G.711 via the SIP trunk everything works just fine, but with G.729 the call cannot be established.
Which component needs the correct MRGL for the transcoding?


[cid:image002.png at 01CE8784.BA459C00]

Do I miss anything?

Regards
Daniel




Senior IT-Specialist
Team leader Network & Communication Services
Managed & Cloud Services

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