11-26-2012 04:25 AM - edited 03-18-2019 12:11 AM
Hi,
I'm having problems routing PSTN based calls via CUCM, here is an overview of current configuration:
So, currently i can't dial out to a PSTN number from a video endpoint registered to the VCS, but i can dial a CTS registered to CUCM. When attempting to dial a PSTN number, the calls drops straight away, search history on the VCS shows that the request was matched against the CUCM SIP Trunk, outbound alias is {PSTN}@{CUCM-IP}; but displays a reson code of 'Bad Request'.
I've used DNA in CUCM to ensure CSS and PT's aren't causing the problem, everything can route OK.
Has anyone come across this problem before....??
Cheers,
11-26-2012 05:50 AM
Can you give us more info about your setup?
Are your endpoints dual registered with SIP and H.323?
Is interworking turned on?
Are you using traversal/interworking to make this call work?
What protocols are available on the neighbor zone between VCS and CUCM?
Can you ping from VCS endpoint to CUCM, and from that endpoint to your voice gateway, or whatever is terminating the call on the PSTN?
Sent from Cisco Technical Support iPhone App
11-26-2012 06:21 AM
Michael,
Thanks for replying, please see responses below:
I hope this helps? Apart from the search history returning the search as a 'bad request', i haven't had chance to get traces, hopefully i'll be able to get these soon.
Thanks,
11-26-2012 09:35 PM
Hi Simon
What about VCS call history (view)?
Can you attach traces from CUCM? What version of VCS and CUCM you have?
Also please capture screenshot of trunk, PSTN gateway and route patter configuration.
Cheers!
Rafal
12-03-2012 03:58 AM
Rafal,
Under VCS Call History, i see the following happening:
- Call Status: Connection Failed
- Disconnect Reason: 400 Bad Request
- Duration: 2 Seconds
- Protocol: SIP -> SIP
I am running VCS X7.2 and CUCM version 8.6.2.
Which section of the trunk are you interested in looking at, i'll see if i can get the right info in one screencap, also the route pattern is: 907XXXXXXXXX, routed to the PSTN GW.
Cheers,
01-10-2013 06:26 AM
Hi,
This has now been resolved.
The PSTN Gateway associated with CUCM was rejecting the calls due to an invalid source address. Endpoints initiating PSTN calls where C series codecs registered to VCS as the following SIP URI:
Regards,
02-01-2014 09:18 AM
What did you do to resolve I'm having the same issue ,but when I create a transform to send just the number I get a bad SIP URI error on the VCS.
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