[Asterisk-Users] Best FXO hardware for home use

[Facundo Ameal]

I'm using an X100P Clone at home and i had not much trouble, remember
I'm just testing and learning a bit at home. I think if you hace to
implement it at office you'll have to spend a bit more.

2006/1/25, Joseph Tanner <joseph at thetechguide.com>:
> Personally, I've had great success with an X101P (it's a clone, but
> it's the exact same chipset and layout of the original).  Now, with
> Asterisk 1.2 beta2 (I believe it was beta2, I could be wrong though)
> and a P3 933MHz PC I did get annoying echo that I couldn't get rid of,
> and only on outgoing calls.  If someone called me, even though all the
> same equipment is being used, there was no echo.  Anyways, I upgraded
> to Asterisk at Home 2.2 with Asterisk 1.2.1 and at the same time upgraded
> to a Celeron 2.93GHz PC, and there's virtually no echo.  Only if
> there's complete silence on the other end and you yell very loud, can
> you barely make any hint of an echo out.  No idea if it was the
> Asterisk upgrade, the new PC, or both that fixed my problem.
>
> Also, somewhere around the pre-1.0 days, I had two of these clones
> (one was the exact same layout as the actual X101P, the other had a
> different layout but the same chipset) and the one I used with my
> Packet8 line had no echo, but my landline did.  Didn't matter if I
> switched the lines, the one connected to the Packet8 device had zero
> echo, the one connected to my landline had a noticeable echo (again,
> only on outgoing calls, incoming was fine).  Played with
> rxgain/txgain, all the echo settings, etc.  But now all is fine.
>
> Guess what I'm trying to say, is a lot depends on the line itself, and
> your exact setup.  If you can pick up an X101P clone for cheap, I'd
> try that first.  Most you're out is a few bucks (I say a few bucks,
> cause even if you pay $20 and decide it won't work for you, you can
> sell it for about what you paid).  If you build or repair PCs a lot
> for others, then you'll need a good cheap modem someday anyways, the
> clone cards work fine for that.
>
> Works fine for me, only issue I have now is callerid isn't 100%
> reliable, but works the majority of the time.  Until I troubleshoot it
> further (i.e., connect a regular phone directly to my landline to at
> least verify it's getting callerid when asterisk isn't), I can't blame
> the card for that.  As long as the card will work with your setup
> (odds are it will), I think it's the best solution for home or small
> business use.
>
> Joseph Tanner
>
> On 1/25/06, Rich Adamson <radamson at routers.com> wrote:
> >
> > > > echo cancellation is pretty limited on these cheap devices.
> > > > the spa3000 manual for example states the AEC is limited to
> > > > 8ms. good AECs will handle 64ms or more. in my experience the
> > > > spa3000 echo canceller is cranky. it works most but not all
> > > > of the time.
> > >
> > > I have been using one for 6 months without any problems. Make sure you have
> > > the most current firmware on it and it should work just fine.
> >
> > Kerry,
> >
> > There "is" an issue with the spa3k (as well as the TDM04b) in terms
> > of handling echo properly on long pstn loops. You are obviously on
> > a relatively short loop if you've not been exposed to the variable
> > echo cancellation issues.
> >
> > In other words, long pstn loops basically fall outside the limits of
> > the echo cancellation software as someone else already noted.
> >
> >
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--
Facundo Ameal.
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