Since we upgraded CallManagers to 4.2(3)SR3a, our ATAs don't hold calls. Sometimed 2 minutes, sometimes 30 minutes, but the call WILL get dropped with a 'Temp Fail' message on the Desk Phone and a CDR disconnect code of 41 (Temporary Failure).
No routers involved, just ATA/Pots phone to 7940 Desk phone on same subnet (or not, it doesn't matter).
Any ideas? Anyone else experience this?
I think this may be something TAC needs to know about.