[Asterisk-Users] HDLC Bad FCS / HDLC Abort

[Sergey Kuznetsov]

This is happens because of imperfect HDLC code. I am having the same in 
my logs, but quite rare
and on spans which is idle. Therefore this is not an issue with PRIs itself.

I may be wrong, but telco technician checked my PRIs as well, and didn't 
find any flaws.
I can tell you more. IT happens when server not being rebooted for quite 
long time.
Right now I am rebooting server every day or two.


Alex G Robertson wrote:

> Some news.....
>
> It is not caused by transmission lines, conectors or anything like that.
>
> The telco tecnician just came here and analyzed the circuit and he got 
> no erros!
>
>
> He sugested me to loop my PRI port in the balum attached in my 
> asterisk box. And.... Surprise...
>
> I got the same errors!
> The error is on my hardware/software.
>
> []s
> Alex Robertson
>
> Alex G Robertson wrote:
>
>> Hi everybody,
>>
>> I just installed asterisk, but this NOTICE dont stop appearing on my 
>> log file;;
>>
>>
>> Feb 17 18:30:11 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:29:42 NOTICE[1336]: PRI got event: HDLC Abort (6) on 
>> Primary D-channel of span 4
>> Feb 17 18:29:41 NOTICE[1336]: PRI got event: HDLC Abort (6) on 
>> Primary D-channel of span 4
>> Feb 17 18:29:41 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:27:11 NOTICE[1336]: PRI got event: HDLC Abort (6) on 
>> Primary D-channel of span 4
>> Feb 17 18:26:51 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:25:11 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:24:41 NOTICE[1336]: PRI got event: HDLC Abort (6) on 
>> Primary D-channel of span 4
>> Feb 17 18:22:21 NOTICE[1336]: PRI got event: HDLC Abort (6) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:16 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:15 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:15 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:15 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:15 NOTICE[1336]: PRI got event: HDLC Abort (6) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:15 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:14 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:14 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:14 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:13 NOTICE[1336]: PRI got event: HDLC Abort (6) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:12 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:11 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>> Feb 17 18:21:01 NOTICE[1336]: PRI got event: HDLC Bad FCS (8) on 
>> Primary D-channel of span 4
>>
>>
>> And from time to time this is happening....
>>
>>     -- B-channel 0/1 successfully restarted on span 4
>>     -- B-channel 0/2 successfully restarted on span 4
>>     -- B-channel 0/3 successfully restarted on span 4
>>     -- B-channel 0/4 successfully restarted on span 4
>>     [...]
>>     -- B-channel 0/29 successfully restarted on span 4
>>     -- B-channel 0/30 successfully restarted on span 4
>>     -- B-channel 0/31 successfully restarted on span 4
>>
>> And the conversation stops.
>>
>>
>> Telco, with a traffic analyzer, says that the clock is sliding.
>>
>> Does anybody knows what can it be? Hardware, software, transmission 
>> (conectors) etc.... ?
>>
>>
>> Thanks in advance.
>
>


-- 
All the Best!
Sergey.
=========================
Sergey Kuznetsov
President/CEO
         High Intellectual Technologies, Inc.

           Web: http://www.hitcalls.com
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