I have the following:
For whatever reason, I can get the call to go through, but it seems to drop on the codec after you answer the call.
I have a similar setup... PBX---H323---h323----CUCM. This setup, I have no issue.
On the dial peer at the 3825.. I am forcing G711
dial-peer voice 809 voip
progress_ind setup enable 3
session target ipv4:172.17.210.8
ip qos dscp cs5 media
Im not super exciting about, but it seems to be the only way the Shortel via SIP will work.
Where Im cloudy on is if the 3825 router itself can transcode a G711 call to G729 (from SIP to H323)... or is this not possible and we need to keep it G711.
I just added this site and it seems to give me grief with the rest of my point to point H323 calling legs.
When use the CSIM Start and the dial peer, the call goes through still, but then later, it gives
csim err csimDisconnected recvd DISC cid(1401)
csim: loop = 1, failed = 1
csim: call attempted = 1, setup failed = 1, tone failed = 0
On another router, I get it to connect, and I can see th codec of the IP phone sending G729 and receiving G711. ( even get the cool beep!)
Not sure what I should adjust on here.