Sip Trunk to Provider has no audio on CUCM

[pea123]

Greetings.

I have recently set-up a sip trunk. I can make incoming or outgoing calls but there is no speech audio or ringing alert.
Using G.711ulaw matching the provider. If I test with a sip softphone on the same LAN with the CUCM the calls have audio and ringing alert.
What do I have to check on the CUCM?

 

[CaseFile]

I had a similar problem.
The fix for me was to check the Media Termanatoin Point checkbox.

 

[pea123]

Thanks for the response. My MTP box has been checked all along with no luck.

 

[pea123]

Just reposting as I did not get much response.
Please assist.

 

[RobertoGritar]

Hi!

I have been expieriencing the same, and the problem was the session manager of the provider. You must first check if you are registered to your proxy provider, in your cube #show sip-ua register status. Check debbugs for sip in order to see wich codecs you negotiated.

Rgards!

 

[pea123]

Thanks for your response.My CUCM is the BE6000 and the sip trunk connects straight to the CUCM. No cube.
How do I check sip trunk registration on this CUCM?