04-21-2017 07:21 AM - edited 03-17-2019 10:07 AM
Hello all,
I am working on a lab setup using Twilio SIP trunk, Cisco 2821 with IOS: c2800nm-ipvoicek9-mz.151-4.M3.bin, and CUCM (System version: 9.1.2.11900-12).
I am trying to test incoming calls. The call is successfully sent to CUCM, I can hear the ringing tone, but when the call is answered, it gets disconnected (Picture attached)
I have also attached the
debug ccsip messages
and
debug ccsip all
output.
Solved! Go to Solution.
10-01-2018 04:49 AM
The problem occurred, because the CUBE was sitting behind a NAT firewall
https://www.twilio.com/docs/sip-trunking/troubleshooting#problem30
Changing the SIP headers fixed the issue.
10-01-2018 04:49 AM
The problem occurred, because the CUBE was sitting behind a NAT firewall
https://www.twilio.com/docs/sip-trunking/troubleshooting#problem30
Changing the SIP headers fixed the issue.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide