[asterisk-ss7] FCS/HDLC errors

[Matthew Fredrickson]

These typically won't cause your problems, although Tomasz was right 
that these are typically caused by problems in the setup.  Aside from 
them, as long as you have link connectivity, your link should still 
work just fine.  MTP2 is designed to make sure that if there is an 
error in a received message, that it requests for retransmission of the 
message until it is received correctly.

On Oct 29, 2006, at 11:51 PM, Charl Barnard wrote:

> Hi all,
> Running a very recent version of asterisk and libss7, things seem 
> mostly OK,
> being able to place and receive calls, but with many of the following 
> errors
> logged:
>
> [Oct 30 07:40:10] ERROR[9194] chan_zap.c: !! Unable to handle 
> SIG_NET_MNG
> messag
> e with H1 = 1 and H0 = 4
> [Oct 30 07:40:10] ERROR[9194] chan_zap.c: Received error from mtp3 
> layer: -1
> [Oct 30 07:40:29] ERROR[9195] chan_zap.c: Bad FCS!
> [Oct 30 07:40:34] ERROR[9194] chan_zap.c: !! Unable to handle 
> SIG_NET_MNG
> messag
> e with H1 = 1 and H0 = 4
> [Oct 30 07:40:34] ERROR[9194] chan_zap.c: Received error from mtp3 
> layer: -1
> [Oct 30 07:40:52] ERROR[9194] chan_zap.c: HDLC Abort!
> [Oct 30 07:42:22] ERROR[9194] chan_zap.c: HDLC Abort!
> [Oct 30 07:42:36] ERROR[9195] chan_zap.c: !! Unable to handle 
> SIG_NET_MNG
> messag
> e with H1 = 1 and H0 = 4
> [Oct 30 07:42:36] ERROR[9195] chan_zap.c: Received error from mtp3 
> layer: -1
> [Oct 30 07:42:45] ERROR[9194] chan_zap.c: HDLC Abort!
> [Oct 30 07:42:45] ERROR[9194] chan_zap.c: HDLC Abort!
> [Oct 30 07:43:08] ERROR[9195] chan_zap.c: Bad FCS!
> [Oct 30 07:43:53] ERROR[9194] chan_zap.c: HDLC Abort!
> [Oct 30 07:44:16] ERROR[9194] chan_zap.c: Error in write Unknown error
> 500[Oct 3
> 0 07:44:16] ERROR[9194] chan_zap.c: HDLC Abort!
> [Oct 30 07:44:16] ERROR[9195] chan_zap.c: Bad FCS!
> [Oct 30 07:44:16] ERROR[9195] chan_zap.c: Bad FCS!
> [Oct 30 07:44:16] ERROR[9194] chan_zap.c: HDLC Abort!
> [Oct 30 07:44:16] ERROR[9195] chan_zap.c: Error in write Unknown error
> 500[Oct 3
> 0 07:44:16] ERROR[9195] chan_zap.c: Bad FCS!
>
> Any ideas of what may be causing this?
>
> Thanks,
> Charl
>
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