We're new to the VoIP scene, but after moving office we've gone totally VoIP.
We've tried a few softphones (SJPhone, X-Lite [aka eyeBeam] and Express Talk), and Express Talk seems to be the best of the bunch. The others were clunky or had issues such as a 5 second delay answering a call - not good!
We want to use a virtual PBX to be able to transfer calls between all the office staff (only 6 of us) and to share our 3 SIP "lines".
I installed axon on a test machine (my workstation) to try it out and it seemed to work pretty well. I forwarded port 5060 (both TCP and UDP - is that right?) and port range 10000-30000 UDP to my machine and set Axon accordingly.
After my tests, we decided to use it live. I installed Axon on our "server" computer (in reality just another WinXP Pro box) and this is where things took a turn for the worse.
Axon fails to register to the SIP server, saying that the server did not respond, yet inbound calls arrive.
Outbound calls are attempted, work briefly, but die after 10 seconds.
The server has no 3rd party firewall installed, and Windows firewall is switched off. It did used to have ZoneAlarm, but I removed that after we had trouble getting VoIP to work in conjunction with it.
Has anyone got any ideas what to try?
Edit to add this line from the logs:
23:50:32 Server [the SIP server] did not respond to register (sip:[username]@[the SIP server])