Hi,
Our architecture:
sip client---->sip server---->SP1 in obi device---->gateway1---->user1
SP1: sip account register to sip server. When a call comes, use inbound_call_route route the call to gateway1.
The problem is when user1 is ringing(not answered), sip client got answered(the call timer of the call in the screen showed) from SP1 obi device. How to get ringback before user1 answers?
Thank you.