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!