I searched the web and mailing list but nothing matched. It occurs during ringing of Bria on an iPad, when I press the notification to answer the call this error occurs intermittently. Can anyone shed some light on this? Been on this problem for months now. Thanks,
Mario G 

2012-08-06 18:02:48.620334 [DEBUG] switch_core_state_machine.c:385 (sofia/internal/sip:110@11.135.1.10:56309) Running State Change CS_REPORTING
2012-08-06 18:02:48.620334 [DEBUG] switch_core_state_machine.c:685 (sofia/internal/sip:110@11.135.1.10:56309) State REPORTING
2012-08-06 18:02:48.620334 [DEBUG] switch_core_state_machine.c:79 sofia/internal/sip:110@11.135.1.10:56309 Standard REPORTING, cause: RECOVERY_ON_TIMER_EXPIRE
2012-08-06 18:02:48.620334 [DEBUG] switch_core_state_machine.c:685 (sofia/internal/sip:110@11.135.1.10:56309) State REPORTING going to sleep
2012-08-06 18:02:48.620334 [DEBUG] switch_core_state_machine.c:410 (sofia/internal/sip:110@11.135.1.10:56309) State Change CS_REPORTING -> CS_DESTROY
2012-08-06 18:02:48.620334 [DEBUG] switch_core_session.c:1229 Send signal sofia/internal/sip:110@11.135.1.10:56309 [BREAK]
2012-08-06 18:02:48.620334 [DEBUG] switch_core_session.c:1429 Session 76 (sofia/internal/sip:110@11.135.1.10:56309) Locked, Waiting