We are having trouble setting up a SIP Trunk between CUCME 6.1 and Asterisk 1.4.18 .
Signaling works and phones are ringing but CUCME is sending "Ressource unavailable Q850 Cause 47" when hanging up.
Another trunk to this Asterisk setup with CCM but version 4.1 works fine with similar configuration.
CUCME 6.1 is running on VMWare, CCM 4.1 runs on a MCS Server. Could VMWare be a problem ?
Thanks for your feedback.