[VoIP] Adtran outpulsing

[Mark Rudholm]

Also, I wasn't particularly impressed with the echo cancellation
performance with the FXO module on this card.  The FXS modules,
however (which is what I'm selling it with) didn't exhibit any
echo problems.

Oddly, the same FXO module on the TDM800 performs perfectly in
terms of EC.

Also, this card is a late (the latest?) revision, rev "J".

I looked at the Sangoma products, but they seemed on the pricey
side, particularly if you opt for the hardware EC.

I've been nagging Digium to support NI1 BRI (their BRI cards
are EuroISDN only) because I'd really much prefer to have digital
entrance facilities (here in CA, BRIs are only 35$/month).

FWIW, I used this card (and the TDM800) on an ASUS A8N-E
(AMD 64-bit) and haven't had any compatibility issues, then
again, the A8N-E isn't an old mobo.

-Mark

John Novack wrote:
> Anyone going for this card, be forewarned about a couple of things.
> The main board  does NOT play well with some older motherboards, even 
> those that are PCI 2.2.
> Also a couple of EM users have had problems with the FXO modules failing 
> when used on SXS station lines, plunger line switch, I believe, but 
> could be others.
> Other than that, it is an OK board, especially if it is available below 
> market value.
> The Sangoma FXO/FXS boards, though more difficult at first blush to get 
> the software installed, are much more forgiving, come with a 5 year 
> warranty and Sangoma will refund if they can't get it to work.
> 
> John Novack
> 
> 
> Mark Rudholm wrote:
>> ikjtel wrote:
>>   
>>> --- John Novack <jnovack at stromberg-carlson.org> wrote:
>>>
>>>     
>>>> I have a TDM400 still in my system,  ( Max, you DID
>>>> mean a TDM400 and 
>>>> not a Digium T1 card, didn't you?? )
>>>>       
>>> Yep.  My guess is that you won't have the erratic
>>> pulsing with the TDM400 - but it would be good to know
>>> for sure so as to eliminate one more variable...
>>>     
>> That reminds me, I recently upgraded from a TDM400
>> (1 FXO + 3 FXS) to a TDM800 (1 FXO + 5 FXS).  If
>> anyone wants the displaced hardware; TDM400 + 2 FXS
>> modules, let me know.  I'll sell it cheap, otherwise
>> it's going up on ebay starting around 190$ (which
>> seems to be the going price).
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