[VoIP] Adtran outpulsing

[Mark Rudholm]

John Novack wrote:
> 
> Mark Rudholm wrote:
>> I looked at the Sangoma products, but they seemed on the pricey
>> side, particularly if you opt for the hardware EC.
>>   
> For up to 4 ports, 2 each, they used to come in cheaper. It has been a 
> while since I looked.
> Beyond 4 ports, with the cheap T1 cards  that have been available and 
> cheap channel banks, higher port counts come in cheap with T1.
> 
>> 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).
> ISDN seems pretty well dead in the US.
>
> They never priced it well

This seems true outside California, at least.
I think 35$/month is pretty reasonable for 2 bearer channels.
I never really did understand why the LECs didn't position
BRI as a POTS alternative, as it has been in Japan and Europe.

>> 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.
>>
>>   
> Exactly
> I bought a PIII MB advertised as PCI 2.2, and Linux couldn't see the 
> card, Digium's response was "try another motherboard"
> I moved to the Sangoma and had no problems
> 
> Digium hardware in the past has been a problem, as has been their 
> support, sorry to say!

I haven't had any complaints with them, but then, I haven't
really had serious problems to speak of.

> They were certainly given many chances. They stuck with that tigerjet 
> glue chip too long, IMO

I've never had any problems at all with the FXS ports.
The FXO worked fine, except for the aforementioned echo
issues, which I suspect had a lot to do with my ridiculous
loop length.  If you look at a CO map of my area, you'll
think "why isn't there a CO right *there*" and you'll be
pointing at my house.  I live 5 minutes from downtown LA
and my loop is close to 30,000 feet.  It's nuts.

The TDM400 has been good to me though, for FXS.  Unlike
most ATAs, it takes pulse, and unlike the Sipura/Linksys
ATAs, it delivers CPC on both inbound and outbound calls
(the Sipuras only deliver it on inbound calls).  I had
an application that required it.

-Mark