Jul  3 11:17:47 WARNING[4090] chan_unicall.c: MFC/R2 UniCall/5 R2 prot. err. [2/      40/Group I       /DNIS         ] cause 32769 - T1 timed out
Jul  3 11:17:47 WARNING[4090] chan_unicall.c: MFC/R2 UniCall/5 7 off ->      [1/       1/Idle          /Idle         ]
Jul  3 11:17:47 WARNING[4090] chan_unicall.c: MFC/R2 UniCall/5 1001  ->      [1/       1/Idle          /Idle         ]
Jul  3 11:17:47 WARNING[4090] chan_unicall.c: Unicall/5 event Protocol failure
Jul  3 11:17:47 VERBOSE[4090] logger.c:     -- Unicall/5 protocol error. Cause 32769
Jul  3 11:17:47 WARNING[4090] chan_unicall.c: MFC/R2 UniCall/5 Channel echo cancel
Jul  3 11:17:47 DEBUG[4090] chan_unicall.c: disabled echo cancellation on channel 5
Jul  3 11:17:47 WARNING[4090] app_dial.c: Unable to forward voice
Jul  3 11:17:47 WARNING[4090] chan_unicall.c: MFC/R2 UniCall/5 Channel gains
Jul  3 11:17:47 WARNING[4090] chan_unicall.c: MFC/R2 UniCall/5 Channel switching
Jul  3 11:17:47 DEBUG[4090] chan_unicall.c: Hangup: channel: 5 index = 0, normal = 27, callwait = -1, thirdcall = -1
Jul  3 11:17:47 DEBUG[4090] chan_unicall.c: Updated conferencing on 5, with 0 conference users
Jul  3 11:17:47 DEBUG[3873] channel.c: Avoiding initial deadlock for 'UniCall/5-1'
Jul  3 11:17:47 VERBOSE[4090] logger.c:     -- Hungup 'UniCall/5-1'
Jul  3 11:17:47 VERBOSE[4090] logger.c:   == Everyone is busy/congested at this time (1:0/0/1)
Jul  3 11:17:47 DEBUG[4090] app_dial.c: Exiting with DIALSTATUS=CHANUNAVAIL.