[cisco-voip] Transcoding Meeting Place

[Schmitz, Daniel]

Hi John,

the MRGL setup looks like this:

CUCM Germany has a SIP trunk to MPE                      - The SIP trunks device pool has a MRGL with the transcoder assigned.
CUCM Germany has a SIP trunk to CUCM China          - The SIP trunks device pool has a MRGL with the transcoder assigned.

The region setup looks like this:
Between CUCM Germany and MPE                              - only G.729 allowed (do I have to change this to G.711?)
Between CUCM Germany and CUCM China                  - only G.729 allowed


What do you mean with meeting place MRGL? The MRGL of the SIP trunk pointing to MPE?
I am not able to enter the  IOS command "dspfarm profile 3 transcode universal"

Regards
Daniel


Von: Divin John (dijohn) [mailto:dijohn at cisco.com]
Gesendet: Dienstag, 23. Juli 2013 09:29
An: Divin John (dijohn); Schmitz, Daniel; voip puck
Betreff: Re: [cisco-voip] Transcoding Meeting Place

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:image001.png at 01CE878A.6DE7D6B0]

Do I miss anything?

Regards
Daniel




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

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