[Asterisk-Users] HDLC Bad FCS / HDLC Abort

[Alex G Robertson]

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.
-- 
Alex G Robertson
NOC - Microlink