I have a Windows Mobile 6 device and have provisioned the integrated SIP client to register with my 3CX server - a few teething troubles but it's registered now and I can make calls. However if I disable the SIP client I don't think it cleanly un-registers with the Server and it remains 'Registered' in the Line Status. Are there any keepalives or timers that I need to change?
Also when the phone re-registers it dynamically allocates the local SIP signalling port it uses but 3CX fails to use this new port for subsequent calls. I can see on a sniffer trace the device sending ICMP port unreachables back to the 3CX Server when it attempts to send a call to it.
Thanks
Andy
Also when the phone re-registers it dynamically allocates the local SIP signalling port it uses but 3CX fails to use this new port for subsequent calls. I can see on a sniffer trace the device sending ICMP port unreachables back to the 3CX Server when it attempts to send a call to it.
Thanks
Andy
