LOG alert, Shelf 1, Controller, Time: 17:15:34-- SIP proxy fail-over occurred on system '' LOG info, Shelf 1, Controller, Time: 17:15:34-- Releasing : Calling = 8481241316,Called = 58 71940, Q850 Cause = 41,Sip Response = 481 (Call Leg/Transaction Does Not Exist), Progress Cause = NONE LOG warning, Shelf 1, Slot 3, Time: 17:15:34-- [1/3/9/0] STOP: ''; cause 841.; progress 1481.; host 0.0.0.0 [MBID 9; 84812413 16->5551940]