[Freeswitch-users] Diagnosing locked calls

[Alex Lake]

Got a few calls that are seeming to last indefinitely.
The last entries in the log are

632b92fd-3729-4e5e-af82-152192f86533 2013-10-21 16:44:04.553092 [DEBUG] switch_core_state_machine.c:92 sofia/internal/002347067124224 at 87.238.73.160 Standard REPORTING, cause: NORMAL_CLEARING
632b92fd-3729-4e5e-af82-152192f86533 2013-10-21 16:44:04.553092 [DEBUG] switch_core_state_machine.c:761 (sofia/internal/002347067124224 at 87.238.73.160) State REPORTING going to sleep
632b92fd-3729-4e5e-af82-152192f86533 2013-10-21 16:44:04.553092 [DEBUG] switch_core_state_machine.c:440 (sofia/internal/002347067124224 at 87.238.73.160) State Change CS_REPORTING -> CS_DESTROY
632b92fd-3729-4e5e-af82-152192f86533 2013-10-21 16:44:04.553092 [DEBUG] switch_core_session.c:1338 Send signal sofia/internal/002347067124224 at 87.238.73.160 [BREAK]
632b92fd-3729-4e5e-af82-152192f86533 2013-10-21 16:44:04.553092 [DEBUG] switch_core_session.c:1546 Session 4 (sofia/internal/002347067124224 at 87.238.73.160) Locked, Waiting on external entities

I need a strategy to work out what it's waiting for!