[Asterisk-Users] Unpredictables Hangups

[Michael Løjtnant]

Hi Stefano,

I don't have a solution for the error message, but the random hangup could be caused by 2 lines in your zapata.conf.

Check your zapata.conf - and make sure busydetect and busycount is not enabled.

Best regards
 Michael

On Fri, 19 Nov 2004 12:19:49 +0100
"Stefano Finetti" <sfinetti at lynxautodelta.it> wrote:

> Hello all,
> 
> i'm experiencing a list of unpredictables hangup on SIP phones using a PRI 
> E100P Card.
> 
> All i can see in logs is
> 
> " WARNING[81931]: File chan_zap.c, Line 5402 (zt_pri_error): PRI: Read on 37 
> failed: Unknown error 500"
> 
> I receive a lot of these errors in asterisk/messages.
> 
> It doesn't seem to be strictly linked to hangups, since i have dozen of 
> these messages per minute and i have completely random hangups on lines.
> 
> Moreover, lines don't fall togheter (eg i don't see channels restart nor all 
> phone calls are hungup in the same moment).
> 
> I'm using stable asterisk 1.0, with correspondant libpri and zaptel, and all 
> phones are Snom 105 SIP Phones. Hangups happen only if i use Zap lines, when 
> i use phones for internal calls all goes fine.
> 
> Hardware is a P4 1.7Ghz with 512Mb of RAM, on a Gygabite Motherboard.
> E100P has it's own IRQ level (not shared and below 15).
> 
> Installation has been done on a RedHat9 system with 2.4 kernel taken from 
> kernel.org (2.4.18).
> 
> I desperately need any kind of possible help, since here my boss is planning 
> to wipe asterisk from our office and return to a traditional PBX.
> 
> I can exclude problems in PRI line from Telco and problems due to the cable 
> (it's a shielded cable made from a telco operator)
> 
> Thanks in advance,
> -- 
> Stefano Finetti
> Technical Coordinator
> Lynx Autodelta S.r.l.
> Tel.: 199797930
> Fax.: 06233227934
> email: sfinetti at lynxautodelta.it
> 
> 
> 
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