> actual format = alaw,
       > host prefs = (alaw),
       > priority = mine
    -- Executing Dial("IAX2/208.49.138.238:4569-3", "Unicall/g1/50612610") in new stack
Oct 11 10:17:27 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 Call control(1)
Oct 11 10:17:27 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 Make call
Oct 11 10:17:27 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 Making a new call with CRN 32773
Oct 11 10:17:27 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 0001  ->      [1/       1/Idle          /Idle         ]
    -- Called g1/50612610
Oct 11 10:17:28 WARNING[24549]: chan_unicall.c:2644 handle_uc_event: Unicall/1 event Dialing
Oct 11 10:17:28 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1      <- 1101  [1/      40/Seize         /Idle         ]
Oct 11 10:17:28 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 5 on  ->      [2/      40/Group I       /Idle         ]
Oct 11 10:17:33 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 R2 prot. err. [2/      40/Group I       /DNIS         ] cause 32769 - T1 timed out
Oct 11 10:17:33 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 5 off ->      [1/       1/Idle          /Idle         ]
Oct 11 10:17:33 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 1001  ->      [1/       1/Idle          /Idle         ]
Oct 11 10:17:33 WARNING[24549]: chan_unicall.c:2644 handle_uc_event: Unicall/1 event Protocol failure
    -- Unicall/1 protocol error. Cause 32769
Oct 11 10:17:33 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 Channel gains
Oct 11 10:17:33 WARNING[24549]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 Channel switching
    -- Hungup 'UniCall/1-1'
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing Congestion("IAX2/208.49.138.238:4569-3", "") in new stack
Oct 11 10:17:33 WARNING[24336]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1      <- 1001  [1/       1/Idle          /Idle         ]
Oct 11 10:17:33 WARNING[24336]: chan_unicall.c:627 unicall_report: MFC/R2 UniCall/1 1001  ->      [1/       1/Idle          /Idle         ]
  == Spawn extension (iax-in, 950612610, 2) exited non-zero on 'IAX2/208.49.138.238:4569-3'
    -- Hungup 'IAX2/208.49.138.238:4569-3'