[Asterisk-Users] TDM400 success?

[Andrei (MPI)]

Short answer: try new FXO modules or a new card.

I've struggled with this for about a month. I've returned one TDM400 
card, got a new one. Had same problems, Digium support installed a patch 
for zaptel, no difference. Then I diagnosed one FXO was dead. Got a 
replacement for that FXO. Suprisingly the new FXO module that arrived 
from Digium did not have this "loud noise" issue for that line. While I 
was having occasional "loud noise" on all the others. Migrated to 
another PC server, no difference.

Then I got four new FXO from Digium (btw, no S/N on them!!), they 
claimed "this will fix all your problems with the card". Got same 
problem again on just one FXO line. Replaced that FXO with FXO they've 
sent me as the replacement the first time. And voila. System works in 
production for more than 2 weeks now, no loud noise so far. (I pray so 
it stays like that forever).

If anyone can comment what's the schematic difference between TMD400P 
Revision E/F and Revision H. As well as how new FXO modules are 
different from the old ones, that would be great.

Thank you,
Andrei

Damon Estep wrote:

>Has anyone had success with the TDM400 in production? I have multiple
>boxes where these cards lock up and the only thing that will fix them is
>to unload *, modprobe -r wctdm, modprobe wctdm, load asterisk. Does not
>matter if it is a FXS/FXO module.
>
>I know this topic has been discussed many times before, but my questions
>is not "is anyone else having this problem" since I know that answer.
>
>Is anyone having success? Any config suggestions that make them more
>stable?
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