[Asterisk-Users] FXOs

[Tom Neville]

I personally am running a couple of X100p cards, a couple of SPA-3000s 
and a T100P.  The X100p cards seem mostly flawless, I do have issues if 
I am trying to use both at the same time.  I suspect it's due to 
interrupt sharing, it just hasn't bothered me enough to go fix it.  The 
other issue with the X100p (which isn't a big deal eaither..) is an 
echo when I start the call.  I can hear my own echo for 5-10 seconds 
then it goes away and I don't hear it any more.  (This is 
SIP->*->X100p->PSTN.)  I suspect it's the echo training learning??

The SPA-3000 seems to work well also with little or no echo.  I put it 
"in-line" with my phone at work.  So, all my work phone calls go in/out 
on this with no real problems.  The only issue that I have (and again, 
it hasn't bothered me enough to go fix it yet..) is two stage dialing.  
When I place an outbound call, * gives me dial tone.  I dial and the 
line starts ringing.  The SPA-3000 picks up, I hear dial tone, it dials 
the number and rings.  Although, I guess it is nice to know what's 
going on with the call.

I'm also using another SPA-3000 at my parents house.  (They run a bed 
and breakfast - so 911 is an issue there.)  I route all outbound calls 
to 911 through the FXO port.  Other than that, the FXO port isn't 
really used.  (I'm trying to talk them into letting it take their 
voicemail.. but they're not quite ready for that.)  Then I route the 
"bat phone" to my *.

The T100P is mostly in a "testing" phase right now.  We have a test PRI 
at the office (used for testing dial up internet equipment and our 
Interactive Intelligence phone system at the office.)  I have that run 
into a T100P in a * box.  (400Mhz Celeron right now.. )  I route all my 
outbound local calls through that box.  I would like to use VOIP for 
outbound long distance at the office.  However, due to  "internal 
management issues" we can't directly connect the Interactive 
Intelligence box directly to VOIP.  So, I was going to use pri_net 
signaling with the T100P and feed an ISDN PRI into the II box.

All of these are connected to one of 4 different * boxes through IAX2.  
ie.. I dial out from the house, it goes down to a * box at the office 
then over to the "dev" box with the T100P.  (Office drops out through 
then IAX2 transfer.)  All that seems to work very well.. with little or 
now problems.  (* has a very high "backgroundability" factor.. ie, put 
it in place, forget it, and just use it.)

Tom


On Aug 27, 2004, at 10:41 AM, mgraves at mstvp.com wrote:

> Hi All,
>
> I'd really like to see a show of hands with regard to people's
> experience with FXO interfaces. I own a few X100p cards and have had
> nothing but problems with them.
>
> I also took part in Sipura's beta program, for the SPA-3000. While it
> can be an improvement over the X100p, it presently has echo problems
> that make it unusable. Sipura has not acknowledged the problem ( at
> least to me) although several in the user community make refernce to
> new firmware that might address the issue, real soon now.
>
> I see a lot of activity recently on-list about the TDM-400. Of course,
> mentions on-list are more than likely the result of people having
> problems. We don't hear about people who have no issues with a product.
>
> So, the nature of my inquiry is to explore how many people out here 
> have
> good/great experiences with the various small FXO adapters? While the
> TDM-400 is my next possible purchase I'd also like to hear about
> devices from Welltech, Clipcomm, Micronet, Multitech, Immixtel, etc.
> With so many products being offered I would hope that we have some
> collective experience with each one.
>
> Thanks,
> Michael
>
>
>
> Michael Graves
> Sr Product Specialist
> Pixel Power Inc
> mgraves at pixelpower.com
> o(713)861-4005
> o(800)905-6412
> f(713)864-8668
> c(713)201-1262
>
>
>
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