[asterisk-users] Bad FCS & hangup

[Eugeniy Khvastunov]

Hello, All!

It is a Piece of my log At the moment of a call:
Jan  9 09:50:21 NOTICE[10902]: chan_zap.c:8194 pri_dchannel: PRI got 
event: HDLC Bad FCS (8) on Primary D-channel of span 3
    -- Accepting call from '' to '0033444' on channel 1/1, span 1
    -- Executing Dial("Zap/1-1", "SIP/3444|60|rgT") in new stack
    -- Called 3444
    -- SIP/3444-0823e6b0 is ringing
    -- Channel 1/1, span 1 got hangup request
    -- Hungup 'Zap/1-1'
    -- Accepting call from '80577591759' to '7666686' on channel 3/1, span 3
    -- Executing Dial("Zap/63-1", "SIP/3444|60|rgT") in new stack
    -- Called 3444
    -- Channel 3/1, span 3 got hangup
    -- Hungup 'Zap/63-1'

The description of actions:
I call from number 80577591759 on number 7666686
Then the asterisk should translate a call on internal SIP 3444
Translates and does hangup
:-(

And messages of type of it emerge constantly:
Jan  9 09:50:21 NOTICE[10902]: chan_zap.c:8194 pri_dchannel: PRI got 
event: HDLC Bad FCS (8) on Primary D-channel of span 3

Please Help!