I have a VoIP environment, SCCP phoneA --- Call Manager --- H323 IP2IP GW ----CME--- SCCP phoneB. When Phone B call Phone A, PhoneA rings and accepts, it shows connected, however PhoneB is still ringing, call can not be established. anyone had similar problem before? and how to fix it. Thanks.
We has a similar problem, only our setup was like this:
Phone A -> Callmanager -> Cisco ASA Firewall - > Callmanager -> Phone B.
In our case, the problem was that SIP inspection was only working in one direction. This is likely the case for you if:
You are using SIP trunks between CUCM and CME
You are using NAT between the two Callmanagers.
You need to have SIP inspeciton working properly on the IP2IPGW if you are using NAT, as NAT doesn't properly translate some stuff within SIP packets, but enabling and correctly configuring SIP inspection on IP2IPGW should do it (don't ask me how - should be plenty of documentation on it though).
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...