[asterisk-users] Problems with D-channel (PRI)

[Jakub "Arkon" Syrek]

We have run pattern loopback test according to 
http://kb.digium.com/entry/138 few times for about 3 minutes each. In one 
test we get 85000 errors and then there where no more errors.

Zttest shows  Average: 99,98% but there also comes values like 98%!! once 
per 10-20 minutes..

Does it mean that our card is crashed? May it be timing error on line?


pri debug span 1 shows:
[Aug 25 16:20:37] WARNING[2713] chan_zap.c: No D-channels available!  Using 
Primary channel 16 as D-channel anyway!
[Aug 25 16:20:38] VERBOSE[2713] logger.c: Sending Set Asynchronous Balanced 
Mode Extended
[Aug 25 16:20:38] ERROR[2713] chan_zap.c: !! Got S-frame while link down
[Aug 25 16:20:38] VERBOSE[2713] logger.c: -- Got UA from network peer  Link 
up.
[Aug 25 16:20:38] VERBOSE[2713] logger.c: q921.c:782 q921_reset: q921_state 
now is Q921_LINK_CONNECTION_RELEASED
[Aug 25 16:20:38] VERBOSE[2713] logger.c: q921.c:733 q921_dchannel_up: 
q921_state now is Q921_LINK_CONNECTION_ESTABLISHED
[Aug 25 16:20:38] VERBOSE[2713] logger.c:   == Primary D-Channel on span 1 
up
[Aug 25 16:21:07] VERBOSE[2713] logger.c: -- Timeout occured, restarting PRI
[Aug 25 16:21:07] VERBOSE[2713] logger.c: q921.c:437 t200_expire: q921_state 
now is Q921_LINK_CONNECTION_RELEASED
[Aug 25 16:21:07] VERBOSE[2713] logger.c: Sending Set Asynchronous Balanced 
Mode Extended
[Aug 25 16:21:07] VERBOSE[2713] logger.c: q921.c:211 q921_send_sabme: 
q921_state now is Q921_AWAITING_ESTABLISH
[Aug 25 16:21:07] VERBOSE[2713] logger.c:   == Primary D-Channel on span 1 
down
[Aug 25 16:21:07] WARNING[2713] chan_zap.c: No D-channels available!  Using 
Primary channel 16 as D-channel anyway!

Regards
Jakub

----- Original Message ----- 
From: "Rob Hillis" <rob at hillis.dyndns.org>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" 
<asterisk-users at lists.digium.com>
Sent: Saturday, August 23, 2008 12:31 PM
Subject: Re: [asterisk-users] Problems with D-channel (PRI)


> Jakub "Arkon" Syrek wrote:
>>
>> Hello, we have strange problem, till now everything was working fine,
>> there where no problems with dial and answer calls.
>> Yesterday our system crashed and we notice strange behavior.
>
> What type of event caused the box to crash?  Given the fact that you've
> also mentioned a degraded RAID array, this is sounding very much like a
> power spike that may have damaged hardware.  What type of card is
> installed in your machine?  Have you spoken to the relevant support
> people for that card?
>
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