I have cucm 11.5
I have problem with configuring sip on cube, my scenario is like below:
I have no incoming and outgoing call.
the problem is that when i call the sip number from PSTN or my cellphone. the ip phone ring and answer the phone but i haven't any ring back or voice from the ip phone. and the call disconnect after exactly 20 seconds.
as i see debug ccsip message it disconnect SIP 2.0 504 gateway timeout with cause=102.
I attach debug ccsip message and ccapi inout and cube configuration.
i configure the CUCM side with All default parameter(1.standar sip profile 2.non secure sip trunk security profile 3.MTP required is Checked 4.Correct MRGL 5.g711alaw 6.change min-se to 90 and sip session timer to 300)
i appreciate if someone could help me.
I am having a similar issue.
CUBE sits behind our firewall, NAT is configured. We are able to make two voice communication with twilio elastic trunk however the call disconnect each time after 20 sec. I suspect the ACK is being sent back to the private IP. What is a possible fix for this