[Asterisk-Users] PRI Errors

Tue Mar 16 09:09:19 MST 2004

I just had the same exact problem this morning.  The only thing I've done in the last couple of days is update  update zaptel.  I rolled back my zaptel to 2/11/04 from 3/8/04.  And kept my libpri from 3/8/04.  I never had this error before updated.  I had other issues, but not this one. 

-sb 

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of Scott Stingel
Sent: Tuesday, March 16, 2004 10:38 AM
To: asterisk-users at lists.digium.com
Subject: RE: [Asterisk-Users] PRI Errors

Hi Andrew-

The "unknown error 500" and the frame rejects are somewhat normal - I get
thousands of these in a busy IVR system.  The underlying cause for these, I
think, is that your processor occasionally does not keep up with the frame
transmitter on the PRI board - something that will happen from time to time,
and asterisk should recover.  (although, as previously discussed, asterisk's
minimal error handling makes this worse than it should be)

The red alarms indicate a loss of synchronisation, or a very high bit error
rate.  This is a basic problem and should not occur.  Are you sure the
switch is not shutting down the T1's as part of some housekeeping?

Regards,

Scott M. Stingel 
Emerging Voice Technology Inc.
Palo Alto, California and London, England

Email:          scott "at" evtmedia.com  
URL:            www.evtmedia.com  

>-----Original Message-----
>From: asterisk-users-admin at lists.digium.com 
>[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of 
>Andrew McRory
>Sent: Tuesday, March 16, 2004 6:54 AM
>To: asterisk-users at lists.digium.com
>Subject: [Asterisk-Users] PRI Errors
>
>
>I've been running Asterisk CVS-02/29/04-12:09:10 for a couple of weeks 
>with no real incidents...
>
>LEC-PRI --- T400P ----- * ----- SIP/IAX
>			|
>			|----- MicroCom ISPorte (faxserver)
>			|
>			|----- Max4004 (dialup)
>		
>This configuration has added some flexibility we didn't have 
>before and I
>love it but two weeks of uptime the following errors appeared 
>in the logs.
>All connections were dropped. Is this an * problem or something on the
>PRI?
>
>It happened at 3AM so it wasn't a big deal this time but I 
>hate to see it
>happen in the middle of the day.
>
>
>===============================================================
>==========
>Mar 14 03:11:54 WARNING[11276]: PRI: Read on 108 failed: 
>Unknown error 500
>Mar 14 03:11:54 NOTICE[11276]: PRI got event: 6 on span 1
>Mar 14 03:11:54 WARNING[998419]: PRI: Short write: -1/15 
>(Unknown error 500)
>Mar 14 03:11:54 WARNING[998419]: Detected alarm on channel 1: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 2: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 4: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 5: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 6: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 7: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 8: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 9: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 10: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 11: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 12: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 13: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 14: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 15: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 16: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 17: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 18: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 19: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 20: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 21: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 22: Red Alarm
>Mar 14 03:11:54 WARNING[15376]: Detected alarm on channel 23: Red Alarm
>Mar 14 03:11:54 WARNING[836629]: PRI: Short write: -1/15 
>(Unknown error 500)
>Mar 14 03:11:54 WARNING[836629]: Detected alarm on channel 3: Red Alarm
>Mar 14 03:11:54 WARNING[11276]: PRI: Read on 108 failed: 
>Unknown error 500
>Mar 14 03:11:54 NOTICE[11276]: PRI got event: 4 on span 1
>Mar 14 03:11:55 WARNING[12301]: PRI: !! Got reject for frame 
>105, retransmitting frame 105 now, updating n_r!
>Mar 14 03:11:55 WARNING[12301]: PRI: !! Got reject for frame 
>105, retransmitting frame 106 now, updating n_r!
>Mar 14 03:11:55 WARNING[11276]: PRI: !! Got reject for frame 
>41, retransmitting frame 41 now, updating n_r!
>Mar 14 03:11:55 WARNING[11276]: PRI: !! Got reject for frame 
>41, retransmitting frame 42 now, updating n_r!
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 1
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 2
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 3
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 4
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 5
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 6
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 7
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 8
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 9
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 10
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 11
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 12
>Mar 14 03:11:59 WARNING[11276]: PRI: Read on 108 failed: 
>Unknown error 500
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 13
>Mar 14 03:11:59 NOTICE[11276]: PRI got event: 5 on span 1
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 14
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 15
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 16
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 17
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 18
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 19
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 20
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 21
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 22
>Mar 14 03:11:59 NOTICE[15376]: Alarm cleared on channel 23
>
>/etc/zaptel.conf 
>========================================================
>span=1,1,0,esf,b8zs
>span=2,0,0,esf,b8zs
>span=3,0,0,esf,b8zs
>span=4,0,0,esf,b8zs
>bchan=1-23
>dchan=24
>bchan=25-47
>dchan=48
>bchan=49-71
>dchan=72
>bchan=73-95
>dchan=96
>
>/etc/asterisk/zapata.conf 
>===============================================
>[channels]
>context=pri-01
>signalling=pri_cpe
>switchtype=national
>usecallerid=yes
>group=1
>echocancel = no
>echocancelwhenbridged = no
>channel => 1-23
>context=max4004-01
>signalling=pri_net
>switchtype=national
>usecallerid=yes
>group=2
>echocancel = no
>echocancelwhenbridged = no
>channel => 25-47
>context=isporte-01
>signalling=pri_net
>switchtype=national
>usecallerid=yes
>group=3
>channel => 49-71
>context=local
>switchtype=national
>signalling=pri_net
>usecallerid=yes
>group=4
>channel => 73-95
>
>uptime 
>==================================================================
>[root at lselinux root]# asterisk -r
>Asterisk CVS-02/29/04-12:09:10, Copyright (C) 1999-2004 Digium.
>Written by Mark Spencer <markster at digium.com>
>Connected to Asterisk CVS-02/29/04-12:09:10 currently running 
>on lselinux 
>(pid = 4377)
>    -- Remote UNIX connection
>lselinux*CLI> show uptime
>System uptime: 2 weeks, 20 hours, 37 minutes, 51 seconds
>Last reload: 4 days, 13 hours, 55 minutes, 33 seconds
>lselinux*CLI>
>
>
>
>Regards,
>
>-- 
>Andrew McRory - President/CTO
>Linux Systems Engineers, Inc.
>PO BOX 3791
>Tallahassee, FL 32315
>(850)224-5737
>(850)294-7567
>
>
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