[cisco-voip] Re: Two trunks between CCM and gatekeeper

[Oleg Shevtsov]

Hi,


I'm not sure that such configuration realy works.
With my understanding of situation, it should be another network entity
to recode long-distance calls from g711 to g729. For example gateway
with such media function of softswitch/SBC with media transcoding.

My last CMM doesn't support g729 codec as well as g723 for outbound calls.
May be I missed something...




On Thu, Jan 20, 2005 at 06:43:02PM +0300, Alex A. Pavlenko wrote:
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>Date: Thu, 20 Jan 2005 18:43:02 +0300
>Subject: [cisco-voip] Two trunks between CCM and gatekeeper
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>Hello.
>It seems a'm at the dead end...
>I have CCM 4.0 connected to third party H.323 gatekeeper by means of h225 trunk.
>Everything works fine, however in such configuration single codec can be used.
>I mean if a phone is in device pool "Pool1" for example and trunk is in "Pool2" 
>the only
>codec being used is one configured in device pools and corresponding regions. 
>But i need at least
>two codecs: g729 for long distance calls and g711 for local calls. Both types
>of calls are served by the same gatekeeper which routes them to different 
>gateways.
>I can't bypass gatekeeper and create direct connections between CCM and gateways
>since gatekeeper functions as central accounting point.
>  So I've set up a new region with g279 codec, new device pool and second trunk 
>to the gatekeeper.
>But this environment does not work. Lets consider a small example.
>There is route pattern 9.XXX with PreDot discard digits rule. If this pattern 
>references old trunk
>which was working from the beginning, calls are completed successfully. If I 
>change old trunk to new,
>Q931 setup message being sent to the gatekeeper includes not transformed
>called number 9XXX as it was dialed instead of XXX. The result is failed call. 
>If I switch back to old trunk calls
>complete successfully again. I have no idea. Is there any method to make it 
>work?
>Sorry for long story and thanks for any responses.
>
>--
>Alex Pavlenko
>System Administrator
>Sandy Info
>
>
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-- 
Oleg Shevtsov
Chief of NOC IntereXchange Carrier
phone +380442399740
mobile +380672341642
fax +380442468910
http://www.ixcaccounting.com