I have a problem with my SIP trunk to my voice carrier. I have CUCM6 with a SIP trunk to a CUBE and then a SIP trunk from the CUBE to my carrier.
When I make a call from an internal phone to a PSTN number I see a SIP INVITE hit the CUBE but the content length is 0 and there is no SDP information.
Is there a command or parameter tweak on CUCM6/CUBE to enable this?
My internal IP phones are running a SCCP image.
Any help would be highly appreciated.
PS. This is a new system and has never worked.