Hi,
I have Cisco Call Manager and GSM gtw configured as SIP trunk
When I call from inside to GSM, and GSM doesn't answer and I finish calling on VoIP phone, GSM mobile phone still ringing.
Or if GSM mobile drop a call, I can here a voice on VoIP phone that the connection with a calling number can 't be delivered.
When I call from GSM it works fine.
What could be a problem?
Thanks