[asterisk-users] busy hangup HDLC Bad FCS (8) on Primary D-channel

[randall]

On 06/01/2011 03:55 PM, randall wrote:
> On 06/01/2011 03:41 PM, Tzafrir Cohen wrote:
>> On Wed, Jun 01, 2011 at 08:06:02AM +0200, randall wrote:
>>> Hi all,
>>>
>>> After running fine for a few months now asterisk seems to hang
>>> frequently , still functioning but the DAHDI channels seem busy  (users
>>> report a busy signal when calling or being called)
>>>
>>> A reboot will allow it to run for another day or maybe 2  or 3 till the
>>> problem occurs again.
>>>
>>>
>>> running stock Asterisk 1.6.2.9-2+squeeze2 on Debian with stock kernel
>>> 2.6.32-5-686
>>>
>>> i get the following errors:
>>> pri_dchannel: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 2
>>>
>>> (happens on all 4 spans)
>>>
>>> and the following in dmesg:
>>> [ 9004.635323] NOTICE-xpd_bri: XBUS-00/XPD-01: D-Chan RX DROP: BADFCS: 252
>>> [ 9004.635332] NOTICE-xpd_bri: XBUS-00/XPD-01: D-Chan RX:    current
>>> packet[0..2]: 55 55 FC
>>> [ 9004.635340] NOTICE-xpd_bri: XBUS-00/XPD-01: Multibyte Drop: errno=-71
>>>
>>>
>>> Channel 0/1, span 1 got hangup, cause 18
>>
>> Is this happening in the middle of a call? Or only a while after the
>> call ended?
>>
> 
> the "bad fcs" messages seem to happen random
there seems to be a relation indeed, have seen them happen randomly
quite spurious, but they indeed tend to happen a while after the call is
made.
> 
> the hangup happens when a call through DAHDI is attempted,
> (usually after it has been working fine for a while a day or 2)