[asterisk-users] Linksys SPA-3102

[Barry D. Hassler]

On Sat, 2006-08-19 at 00:12 -0500, Rich Adamson wrote:

> Barry D. Hassler wrote:
> > Any further experience with the 3102? I'm looking for a solution to 
> > connect 2 CO lines and a set of 2-line phones to my asterisk server 
> > (along with a bunch of SIP phones). Would 2 of these work well for that?
> > 
> > Hopefully no echo problems! That would kill this project? I'm still 
> > searching for one peice of hardware that would have 2 FXO and 2 FXO 
> > ports on it, but haven't stumbled on it yet....
> 
> The only way to know for sure whether the spa will provide reasonable 
> service is to try it on the actual pstn line to be used. There is no 
> other way for anyone to tell you anything different. The quality of the 
> audio & echo is 100% dependent on the exact pstn line characteristics, etc.
> 
> Two other reasonable alternatives are:
> Digium TDM card with two fxo and two fxs modules.
> Sangoma A200d card with one fxo module (has two lines on it) and one fxs 
> module (has two lines on it).

Yes, this would definitely work. J'm trying to avoid running phone lines
the distance between the existing demarc and the asterisk server :-)
But, it would probably be the best solution. 

Actually, as I look further, I don't think the 3102 will work in this
environment at all for what I want. (incoming FXO calls go to Asterisk
server, and through its dial plan, which might include ringing the
analog phones on the FXS ports).

I did find AudioCodes MediaPack MP-114, which has exactly the
configuration I want (2 FXO, 2 FXS), but have to be registered to get
any documentation on the units. 

2 Grandstream HT-488's looks like a possibility too....

I think I'll just run the phone lines into the server, and add more
cards there.... :-)


> 
> The only way to know for sure whether the TDM card will provide 
> reasonable service is to try it on the actual pstn lines, just exactly 
> like the spa box. Same issues as the spa; some pstn lines work fine, 
> others have echo that nags users.
> 
> The Sangoma card with h/w echo canceler just plain works, but is 
> probably the more expensive of the alternatives.
> 
> The Mediatrix 1204 seems to have excellent echo characteristics, but it 
> is likely the most expensive approach for small systems.
> 


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