[Asterisk-Users] Zaptel/PRI problem

[Chris A. Icide]

Just a note to the list, this problem still seems to exist as late as 
2004-04-07.

Symptoms as we have seen it are this.  System runs along just fine, no 
errors.  At some random interval, not based upon time, and not apparently 
based upon call load, sound drops out on all calls made over the Zap (T1 
PRI interface in our case T100P card).  Any new calls made or received from 
this time forward have no sound.  The problem is temporarily fixed by a 
shutdown and restart of the asterisk code.

This will be a major issue for anyone who is installing or upgrading a 
system using a T1 card (our experience is with the single port digium card, 
but previous postings concerning this issue indicate the problem exists 
with the 4 port as well).

A temporary work around has been to fall back to the CVS version 2004-03-05 
10:28 for zaptel and asterisk.  We've just upgraded (downgraded) from the 
current versions to the march 5th versions and will be watching to see if 
the problem goes away.

Here are some of the error messages we are seeing:

Apr  5 07:57:01 WARNING[-1200284752]: PRI: Read on 31 failed: Unknown error 500
Apr  5 07:57:01 NOTICE[-1200284752]: PRI got event: 8 on span 1

Apr  6 07:10:28 WARNING[-1200215120]: PRI: Read on 29 failed: Unknown error 500
Apr  6 07:10:28 NOTICE[-1200215120]: PRI got event: 5 on span 1

Apr  6 14:22:23 WARNING[-1200260176]: PRI: Read on 29 failed: Unknown error 500
Apr  6 14:22:23 NOTICE[-1200260176]: PRI got event: 6 on span 1

Apr  6 14:53:17 WARNING[-1200165968]: PRI: Read on 30 failed: Unknown error 500
Apr  6 14:53:17 NOTICE[-1200165968]: PRI got event: 5 on span 1

Apr  7 15:00:26 WARNING[-1210471504]: PRI: Read on 64 failed: Unknown error 500
Apr  7 15:00:26 NOTICE[-1210471504]: PRI got event: 5 on span 1

Apr  7 20:33:52 WARNING[-1210508368]: PRI: Read on 55 failed: Unknown error 500
Apr  7 20:33:52 NOTICE[-1210508368]: PRI got event: 8 on span 1

Apr  8 09:42:15 WARNING[-1210725456]: PRI: Read on 32 failed: Unknown error 500
Apr  8 09:42:15 NOTICE[-1210725456]: PRI got event: 5 on span 1

-Chris

On 03:14 AM 3/30/2004, Tais M. Hansen wrote:
 >-----BEGIN PGP SIGNED MESSAGE-----
 >Hash: SHA1
 >
 >Hi.
 >
 >I'm getting the following error at random intervals on my TE410P with 
Asterisk
 >CVS-03/30/04-11:49:01-CEST.
 >
 >I have two spans active, one connected to my Telco, the other to a Siemens
 >PABX. Both spans display this behavior at random intervals.
 >
 >All calls are dropped when this happens. Spans are not necessarily in use 
when
 >this happens.
 >
 >
 >Mar 30 12:01:41 WARNING[81926]: chan_zap.c:6017 zt_pri_error: PRI: Read 
on 72
 >failed: Unknown error 500
 >Mar 30 12:01:41 NOTICE[81926]: chan_zap.c:6733 pri_dchannel: PRI got 
event: 4

<snip>