I have a problem with SIP trunk.
Problem Description >
I am dialing an external phone number (mobile number in this case) from my IP phone registered to CUCM 11.5 and I know the mobile is switched off, but I get ringing tone still.
Could someone give me a clue as to what is causing this behavior.
IP phone > CUCM 11.5 > SIP Trunk > CUBE > ITSP
I have attached the call logs. I see no 180 ringing in the logs.
Calling number > 3061090
Called number > 90565549955