[AsteriskBrasil] problemas com r2

[Lilian Goncalves]

eu converso com 2 ramais iax e no meio da chamada ele desliga com o seguinte
erro:

Jul 19 16:57:15 WARNING[3669]: chan_unicall.c:634 unicall_report: MFC/R2
UniCall/27 1001  ->      [1/IDLE    /Idle          /Idle         ]
    -- Registered IAX2 '2006' (AUTHENTICATED) at 55.55.10.110:4569
Jul 19 16:58:35 WARNING[3891]: chan_unicall.c:634 unicall_report: MFC/R2
UniCall/22      <- 0011  [1/CONNECTD/Answered      /Category     ]
Jul 19 16:58:35 WARNING[3891]: chan_unicall.c:634 unicall_report: MFC/R2
UniCall/22 R2 prot. err. [1/CONNECTD/Answered      /Category     ] cause
32773 - Unexpected CAS bit pattern
Jul 19 16:58:35 WARNING[3891]: chan_unicall.c:634 unicall_report: MFC/R2
UniCall/22 1001  ->      [1/IDLE    /Idle          /Idle         ]
Jul 19 16:58:35 WARNING[3891]: chan_unicall.c:2694 handle_uc_event:
Unicall/22 event Protocol failure
    -- Unicall/22 protocol error. Cause 32773
Jul 19 16:58:35 WARNING[3891]: chan_unicall.c:634 unicall_report: MFC/R2
UniCall/22 Channel echo cancel
Jul 19 16:58:35 WARNING[3891]: chan_unicall.c:634 unicall_report: MFC/R2
UniCall/22 Channel gains
Jul 19 16:58:35 WARNING[3891]: chan_unicall.c:634 unicall_report: MFC/R2
UniCall/22 Channel switching
    -- Hungup 'UniCall/22-1'

Alguém  já passou por isso e tem a solução do problema?
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