Hello,
 
I am trying to establish a sip trunk to call manager.
 
Scenario.
 
CUCM---(SIP trunk)----->CME------>Sip provider.
 
I can make call from CME router to outside based on the sip-ua configuration.
I can also make calls from CUCM extensions to CME extensions.
But the problem is, I am not able to call from CUCM to outside.
 
debug ccsip shows an disconnect code 403 and 57.
Also I can see the negotiated codec as none.(the codec I set is g711ulaw).
 
Thanks in Advance.