This is a new install with CUCM 8.5.1. External calls are experiencing a slight delay in the audio which causes a lot of people speaking on top of each other, specifically in conference calls.
This is not limited to conference calls, and those conf calls hosted externally with a single caller from this environment are having the same issue.
There are no other call audio issues, no static, jitter, fade out, etc.
Also, the system connects to the pstn via a 2951 h323 gw.
