[Asterisk-Users] Best quad-port fxo solution with EC?

[Rich Adamson]

> > I am trying to figure out which way to go for a quad port fxo solution
> > with a good echo can on it.  My options are the sangoma remora, a
> > mediatrix fxo, or something similar.
> > 
> > The issue is that I would need a good EC.  This would be on about a 9000
> > foot loop, and the lines don't function well on a spa-3000 or zaptel tdm
> > 4 port card.
> > 
> > Anyone have experience that drives them in a certain direction when
> > considering a good ec on a quad port?
> > 
> > I tried this also with some fxo clones, but echo killed it.
> 
> The nearest CO my POTS line goes to is 11 miles away.  My POTS line 
> works when plugged into my TDM400P FXO port.  I DID have to fiddle with 
> the gains a bit and I still have to get rid of the last of the echo, but 
> overall it seems to work well.

Are you sure the telco is not using fiber-extended line modules?

Have you measured the loss from their milliwatt generator?

(The numbers would be very interesting to see since a large number of
spa3k and tdm04 users at that distance have significant EC issues.)