Justin,That looks exactly like the behavior we are experiencing.  We are running 7.1(3).  We are scheduled to upgrade to 8.0 soon, so I may wait until then to continue my troubleshooting.Thanks for the link,Darryl

Justin,Thanks for the link.  I tried what was suggested.  I tried a call_connect_delay parameter of 500, 1500 and 2000.  The only change is the number of retries before the no lines available message.Darryl

I am having the same issue.  We are running Unity Connection 7.1(3) running in active-active HA mode.  We are SIP integrated to CUCM 8.0.  I created 2 new SIP trunks (reused the SIP security profile and SIP Profile from the original CUCM integration,...