This is what I started with. See Attached.

Adding a 2 second delay between the start and accept step fixed this problem for us.

We also are experiencing this problem with 4.0(3) but much worse. This number will go up over the course of the day to more the 15[00:00:00]. No contacts are reported in RTR in appadmin.

We seem to only get the 'temp failed' message on calls coming across 2 PRI's from another PBX. The calls on the other PRI's at this site have not reported this error.