[Asterisk-Users] Re: tdm400p static - out of ideas (Jorge Mendoza)

[David Cook]

Ryan, from the console what does "zap show channel 1" or 2/3/4 in your
case say.

I have X100P's and I seem to be having similar sounding problems. I
noticed that the above command shows the channel to be off-hook at all
times when a phone line is plugged in.

I don't know why or if it is a bug in the application reporting the status.

dbc.

Ryan Courtnage wrote:
> On July 8, 2004 03:22 am, Nicholas Bachmann wrote:
>
>>Ryan Courtnage wrote:
>>
>>>Hello,
>>>
>>>Over the past several weeks, we have been having an intermittant problem
>>>with our deployment of a TDM400P card (4 fxo).  We have tried many
>>>things, and the problem still re-occurs.
>>>
>>>The Problem:
>>>
>>>Occasionally (every 48 hours), the TDM400p card will stop answering
>>>incoming calls on ALL fxo ports.  Attempts to send outbound calls on any
>>>Zap channel will result in hearing a loud 'static' noise on the line.
>>
>>Let's look at some possibilities of line problems:
>>What time does it stop answering? Is it ever during ALIT times (usually
>>very early morning)?
>
>
> It's totally random - morning/evening/afternoon.  Once it stops answering,
> that's it, a reboot or module-reload is needed.  If ALIT for some reason
> prevents the card from answering, it should be able to recover and begin
> answering after the ALIT is complete.
>
>
>>Have you tried calling the telco to see if it could be their problem?
>
>
> When the card goes into the non-functional state, I can plug a regular
phone
> into any of the lines and make calls just fine.  After verifying working
> lines and plugging them back into the tdm400p card, I still can't dial out
> (the Zap channel will answer, but I will hear only static, and the call to
> the pstn is never placed).  As well, incoming calls will not be
answered (*
> console will not even show the 'started simple switch on zap/x' message).
>
>
>>How far away from the CO/mux are you?
>
>
> Not too sure - it's in downtown Calgary - so probably not far.
>
> There is the possibility that _something_ with the phone line is
triggering
> the problem.  Maybe it's some noise, an unexpected signal, some
crosstalk ...  
> things that will cause unexpected behavior ... but also things that
shouldn't
> put the entire card into a non-functioning state.
>
>
>>Have you tried a new/different card?  If you didn't want to fork out the
>>cash for a new one, you could try a X100P/knockoff* on one of the lines
>>to see if that fixes the problem... if so you can deduce a bad card.
>
>
> I may have to push for a replacement tdm400p card from Digium.
>
>
>>Nick
>>
>>*I usually don't recommend the knockoffs, but for a day of testing $10
>>sure beats $100... everybody else should support Digium! :-)
>
>
> An acquaintance who is having the same problem has reluctantly
replaced his
> card with an openline4.  I would like nothing more than to stick with
Digium
> hardware - this thread and obtaining a replacement card is my last kick at
> the cat.

-- 
David Cook