I have this very weird problem.
I have a site with a callmanager integrated with a legacy PBX through four FXO ports. It was workingn earlier and its configuration was pretty straight forward and it was working fine.
I have the gateway configured as an H323 gateway and I had a route pattern pointing to this gateway. A pots dial-peer points to the FXO ports.
WHile i also have a "connection plar opx XXXX" on the voice ports then a voip dial-peer pointing to the call-manager's ip.
However, all of a sudden, the integration failed and now calls cann't be made.
For example, when an analog phone from the PBX side calls an IP Phone, the IP Phone does ring, however, it cannot pick up the call!!!, Meanwhile the analog phones can hear a ringback and I can see the FXo port move from Alerting to Ringing then to guardout then to onhook and this process repeats forever.
And when an IP Phone calls an analog phone, the analog phone does ring but he cannot hear anything at all on the line, while the IP Phone doesn't hear a ringback tone and see connected on the ip phone screen, but after about 10 seconds, the IP phone would get a busy tone!!!!
what is that? I checked the configuration a thousand of times and i also checked the PBX side and it was fine as well.
the only thing i couldn't do was a restart since the router has a couple of E1s and they are use by the employees.
Out of desperation, I even tweaked with the signaling on the port, changing the timout values but still no progress.
Any idea what am i doing wrong
Really appreciate the response.