asterisk users - Sep 2004 - X100P blows up after a while (really loud noise)

Two days ago, I was talking on the phone from the FXO, to a SIP phone.
After some time (like 1h30m), all of a sudden, there's a huge noise,
like a buzz... Really loud. So I hungup, and called my asterisk box
again... All I could hear was that sound. Someone called me from the
internet, and as Asterisk dialed the FXO, all she heard was that noise
too.

So, I logged in my Asterisk server, restarted the Asterisk (just the
software). Didn't work. So I stopped it, unloaded the wcfxo module,
loaded it up again and it was just fine. I could call the FXO and use
it just fine. Weird.

Last night, I talked for about 2 hours straight. No problem. But, this
morning, when someone called the FXO all that could be heard was that
loud noise.

I could make a "stop-asterisk; reload modules; start-asterisk" script,
and a cron entry or something to do it periodically, even check to see
if there's any call on progress before restarting, but that's just a
very ugly solution... If I could check the wcfxo status and get some
info that tells me if it's in "buzzer-mode-on", I could come up
with a
more elegant solution.

I don't know if it helps: the FXO card, at the first day, was sharing
IRQ with the soundcard. But there wasn't any software using the
soundcard. Yesterday, I unloaded all the sound modules, and checked
/proc/interrupts. No IRQ sharing... But the problem occurred again
later... In this cheap MoBo there's no option to mess around with IRQs
in the BIOS. Today, I'm gonna disable onboard sound, to see if it
helps at all, but I think that without modules loaded, it would have
the same effect. I'll try this just to make sure...

Did someone have this problem too? Any ideas, thoughts, suggestions...?

Thanks,
Marconi Rivello.

Marconi,
I don't know if this is will help you, but I had problems with some 
TDM400p cards. They worked fine, but after about 10 minutes in use there 
was a very loud static, humming noise. The cards where brand new, rev. 
G. I spoke with Digium about the problem, and they suggested that I 
update to the latest Asterisk, as there was a driver change in the last 
month (I was running a version from July). So I updated Asterisk, 
rebooted, and now my cards work great.  Hope that helps!

-Tor

Marconi Rivello wrote:
>Two days ago, I was talking on the phone from the FXO, to a SIP phone.
>After some time (like 1h30m), all of a sudden, there's a huge noise,
>like a buzz... Really loud. So I hungup, and called my asterisk box
>again... All I could hear was that sound. Someone called me from the
>internet, and as Asterisk dialed the FXO, all she heard was that noise
>too.
>
>So, I logged in my Asterisk server, restarted the Asterisk (just the
>software). Didn't work. So I stopped it, unloaded the wcfxo module,
>loaded it up again and it was just fine. I could call the FXO and use
>it just fine. Weird.
>
>Last night, I talked for about 2 hours straight. No problem. But, this
>morning, when someone called the FXO all that could be heard was that
>loud noise.
>
>I could make a "stop-asterisk; reload modules; start-asterisk"
script,
>and a cron entry or something to do it periodically, even check to see
>if there's any call on progress before restarting, but that's just a
>very ugly solution... If I could check the wcfxo status and get some
>info that tells me if it's in "buzzer-mode-on", I could come
up with a
>more elegant solution.
>
>I don't know if it helps: the FXO card, at the first day, was sharing
>IRQ with the soundcard. But there wasn't any software using the
>soundcard. Yesterday, I unloaded all the sound modules, and checked
>/proc/interrupts. No IRQ sharing... But the problem occurred again
>later... In this cheap MoBo there's no option to mess around with IRQs
>in the BIOS. Today, I'm gonna disable onboard sound, to see if it
>helps at all, but I think that without modules loaded, it would have
>the same effect. I'll try this just to make sure...
>
>Did someone have this problem too? Any ideas, thoughts, suggestions...?
>
>Thanks,
>Marconi Rivello.
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Marconi,

Marconi Rivello wrote:
> Two days ago, I was talking on the phone from the FXO, to a SIP phone.
> After some time (like 1h30m), all of a sudden, there's a huge noise,
> like a buzz... Really loud. 
You are not alone.  This problem has also been experienced by many with 
tdm400p cards.

There is a thread you can read here:
http://lists.digium.com/pipermail/asterisk-users/2004-July/053630.html

I don't think anyone knows exactly why this happens.  I've made several 
calls to Digium without resolution.

Currently, all my installs are stable.  After standardizing on 
Intel-only hardware, fed with filtered power.  This suggests that the 
MoBo (other other HW) may be to blame.

Good luck
Ryan