[cisco-voip] CallManager 4.2(3) vs. Asterisk

[Kelemen Zoltan]

Hi!

  I had a working voicemail system on an Asterisk server, with CCM 4.0, 
through a SIP trunk.

  However, right now (post-upgrade) my SIP trunk seems dead, and that 
mostly from the CCM side. I have no phones registered to the Asterisk 
box, so I can't really test it from that direction.
 
  Capturing traffic on the Asterisk end shows almost no SIP traffic 
(except for Asterisk regularly sending out an OPTIONS request, and 
receiving a 400 Bad Request "Malformed/Missing URL" response from 
CiscoCM), so the calls simply don't make it from the CCM to the Asterisk 
server. Real Time monitoring on CCM shows CallsAttempted increasing on 
the SIP trunk.

I can't find anything in the traces, however, I might be looking in the 
wring direction :-)

Any ideas?

thanks,
  Zoltan