I have a test IP to IP Gateway on 2811 with PVDM2-16 DSPs.
The software is c2800nm-ipvoice_ivs-mz version 12.3(11)T7.
Accortding to the documentation it should be able to do transcoding between inbound
and ourbound call legs (Transcoding G.711-G.729). However, the configuration guide points to
“Configuring Enhanced Conferencing and Transcoding for Voice Gateway Routers” chapter
of the Cisco CallManager and Cisco IOS Interoperability Guide. This configuration is for
CallManager transcoders. But I need the gateway to do transcoidng and do so with NO need
for CallManager. The gatway is not registered in gatekeeper also. It should be standalone
and make static routing of h323 calls between endpoints.
I've searched in the documentation but I did not find any configurations
that I can use. I made a lot of tests with diferents configurations but when there is no match
in codec betweend in and out legs (with slowstart) the debug says:
__________
*Aug 18 11:10:03.030: //2546/3AD381928396/H323/cch323_prepare_preferred_codec_list: Check the filter: Not a single match
*Aug 18 11:10:03.030: //2546/3AD381928396/H323/cch323_peer_caps_ind_common: No Matching Codec after filtering. Hence try to find xcoder
-----------
When faststart is enabled the two call legs have different codecs in " show call history " but I here strange sounds
which means that there is no proper ( or no at all) transocding in the gateway but the endpints try to decode the incorect codec.
So I don't know if this is some problem in this recent version of IOS or I have to make some reconfigurations or even change the DSPs.
Or may be it's not (yet) possible to to this kind of transcoding and I misunderstood the features description in the docs?
Any ideas are welcome!
