Has anyone seen any issues where calls in prgress just drop after 15 minutes. It is a callmanager 5.1, woth IPCC version 7 so there is sip integration but the trunks to the telco are PRI's.
We got this error
Sep 15 14:19:52.018: ISDN Se0/0/1:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x93A2
Cause i = 0x80FF - Interworking error; unspecified
Sep 15 14:19:52.074: ISDN Se0/0/1:23 Q931: RX <- RELEASE pd = 8 callref = 0x13A2