[cisco-voip] Gateway to G.729 Region calls

[Wes Sisk]

sounds like your transcoder does not have IP connectivity (IP routing 
issue?) to either the phone or the gateway.

/wes

Matthew Melbourne wrote:
> Hi,
>
> I'm just setting up a Region for using G.729 across the WAN. In
> addition, we have introduced some transcoding resources for access to
> CRS and Unity (and this works fine using a G.729-only Region; I can
> see transcoding resources being invoked).
>
> However, more fundamentally, called entering the voice gateways from
> the PSTN, and destined for G.729-only handsets are being set up, but
> there is no audio (in either direction). If I place the call on hold
> on the IP Phone, the other end hears CCM MoH and when the call is
> released, the audio path is present, using the G.729 codec.
>
> On the gateway, I can see that the G.729 VOIP leg has been established
> (before and after the call is placed on hold):
>
> voice-gw1#sh call active voice compact | inc g729
> 49632 ORG     T781   g729br8     VOIP        P       10.80.2.42:16384
> 49631 ORG     T781   g729br8     TELE        P
>
> The gateways are MGCP-controlled and are running 12.4(15)T3.
>
> If I change the phone's Region to use G.711 only, then everything is fine.
>
> Cheers,
>
> Matt
>
>