[cisco-voip] How to use G711 when call placed via CM H323 gateway

Samuel Womack samuel.womack1 at gmail.com
Wed Jan 7 10:02:11 EST 2009


Try Setting Inbound/Outbound VoIP DP's to utilize G711u; if you don't  
specify a codec on a DP then the default is G729r8.
Sam

On Jan 7, 2009, at 8:51 AM, Andy Yerofyeyev wrote:

> Hello ,
>
> I'll appreciate if you can help me understand how codecs is selected  
> and how to restrict gateway to use only G711 when call placed via  
> H323 gateway.
> I created H323 gateway , assigned gateway to same device pool and  
> location as all of my phones , but when I place call thru this  
> gateway I can see only g729 codec in H245 capabilities .
>
> debug h245 asn on gateway itself shows about incoming call (from CM)
>       capabilityTable
>       {
>
>         {
>           capabilityTableEntryNumber 6
>           capability receiveAudioCapability : g729AnnexA : 2
>         },
>         {
>           capabilityTableEntryNumber 5
>           capability receiveAudioCapability : g729 : 2
>         }
>       }
>
>       capabilityTable
>       {
>
>         {
>           capabilityTableEntryNumber 1
>           capability receiveAudioCapability : g729 : 6
>         },
>         {
>           capabilityTableEntryNumber 44
>           capability receiveAndTransmitUserInputCapability :  
> hookflash : NULL
>         },
>         {
>           capabilityTableEntryNumber 45
>           capability receiveAndTransmitUserInputCapability :  
> basicString : NULL
>         },
>         {
>           capabilityTableEntryNumber 46
>           capability receiveAndTransmitUserInputCapability : dtmf :  
> NULL
>         }
>       }
>
> If I use Non-gatekeeper controlled intracluster trunk situation  
> pretty the same. Just FUI , location bandwidth is Unlimited and 711  
> codec configured to use inside Region to which phones and gateway  
> belongs to. If call placed from one 7960 to anoter they use 711 codec.
>
> If I restrict to use only 711 codec on gateway itself (by using  
> codec-class on incoming dial-peer) call failed.
>
>
>
> -- 
> Best Regards,
>
> Andriy Yerofyeyev CCIE #21607
> http://www.linkedin.com/in/ccie21607
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip

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