[VoIP] Adtran outpulsing

[Mark Rudholm]

Oh, one more thing, my loop length is pretty long, between
26,000 and 27,000 feet, so that was probably contributing
to my FXO echo problems.

Mark Rudholm wrote:
> 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