[Asterisk-Users] fxo cards

Thu May 22 08:12:43 MST 2003

First the reason why voice modems won't get you whre you want to be has
been covered many times in the archives for users like yourself. Most of
them that happen to have linux drivers are not cheap because they are
have the DSP in hardware and these also only do half duplex audio. Fine
for an answering machine, but misses the mark fro PBX or VoIP fun. The
ones that don't have a DSP on board are usually little more than a
little hardware glue and a soundcard. These rarely have drivers under
linux because it would require them to distribute the code for the DSP
that does V.90, X2, V.34, MNP and all the other patented and costly
handshaking protocols. So in this second class of hardware they also
don't usually distribute specs to make them work either. 

At some point it might be nice to see the AMR based modems working since
it is exactly some glue to put the signaling out of band, and the audio
down to the MB and then passes it to a AC97 sound card built into the
MB. Genereic, and everyone with a semi new motherbard has one already,
they only will have to track down the adapter for their area.

Reasons why the X100P should be bought. For the most part, it isn't much
if any different from a higher end winmodem with the exception of it
doesn't have windows drivers. It already has been tested, and works with
linux. It has totally open source drivers that can be modified. It works
with asterisk now and won't require you spending weeks making a proper
channel driver.

And most of all, consider it your first bribe to Mark to make a change
to asterisk the way you want it to be. Without paying Mark, he does
things on his own time schedule. So if you don't feel like you can
contibute in any other way, this is a very good way to start. Pep rally
over.  

On Thu, 2003-05-22 at 09:46, Dan wrote:
> Nope.. just one line (for my home), but what has a X100P card more than a
> voice modem in terms of hardware?
> I think it is a big difference between X100P and LineJack (in price too).
> LineJack has the audio codecs includec in hardware. About X100P I know
> allmost nothing.
> The specification on the web page is so thin that it appears like a device
> who does.... nothing in the hardware.
> I am missing something?
> Why to pay 99 USD (plus a lot for transport) and not to use a local USB
> voice modem which is just 20USD?. Just because they are no drivers available
> for Asterisk?
> 
> If someone knows more about X100P I kindly ask him to send me that
> information too.
> I really need a good FXO interface (one port only) and supported by
> Asterisk.
> 
> Thanks,
> Dan
> 
> 
> ----- Original Message -----
> From: "WipeOut ." <wipeout at linuxmail.org>
> To: <asterisk-users at lists.digium.com>
> Sent: Thursday, May 22, 2003 5:32 PM
> Subject: Re: [Asterisk-Users] fxo cards
> 
> 
> > If you only want 1 line going into * then you best bet is a X100P card at
> $99.. It will make your life much easier when it comes to the setup.. I
> though you wanted multiple lines..
> >
> > > Hi,
> > >
> > > > A voice modem is not really an option..
> > >
> > > Why? I don't want to get an ISDN connection at home only for that.
> > > I have a broadband connection at home (cable)... so no need for me to
> have
> > > an ISDN line too...
> > > There is any other reason not to use a PCI or USB voice modem as a FXO
> > > interface?
> > > It can be a lot cheaper option for home use.
> > >
> > > Thanks,
> > > Dan
> > > ----- Original Message -----
> > > From: "WipeOut ." <wipeout at linuxmail.org>
> > > To: <asterisk-users at lists.digium.com>
> > > Sent: Thursday, May 22, 2003 5:02 PM
> > > Subject: Re: [Asterisk-Users] fxo cards
> > >
> > >
> > > > A voice modem is not really an option..
> > > >
> > > > I am going to attempt to use a passive BRI ISDN card and see what the
> > > performance is like.. Later I will try and add another BRI card so that
> I
> > > have 4 channels..
> > > >
> > > > > Hi,
> > > > >
> > > > > A voice modem (PCI or USB) can be an option?
> > > > >
> > > > > BR,
> > > > > Dan
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "WipeOut ." <wipeout at linuxmail.org>
> > > > > To: <asterisk-users at lists.digium.com>
> > > > > Sent: Thursday, May 22, 2003 1:24 PM
> > > > > Subject: Re: [Asterisk-Users] fxo cards
> > > > >
> > > > >
> > > > > > Sounds like you have the same need I do.. and many others I am
> sure..
> > > > > >
> > > > > > The only option seems to be the Diva Server ISDN cards but they
> are
> > > very
> > > > > expensive.. So it actually works out cheaper to get a E1 or T1 card
> and
> > > the
> > > > > line installed than buying the 4 port Diva server card (In the UK
> > > anyway)..
> > > > > >
> > > > > > Later..
> > > > > >
> > > > > > > Hi all,
> > > > > > >
> > > > > > > Is there any alternative hardware components for multi port FXO
> > > cards,
> > > > > other
> > > > > > > than Single and E1 or T1 level? For example 4 or 8 port FXO card
> is
> > > > > ideal.
> > > > > > > Also the price matters.
> > > > > > >
> > > > > > > Thanks!
> > > > > > >
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> > > > > >
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-- 
Steven Critchfield <critch at basesys.com>