The modem for Asteriks

[antonio]

Archived from groups: comp.dcom.voice-over-ip (More info?)

To use my Linux based computer as a VOIP<->PSTN gateway i need a
special modem or a voice modem or could it be any regular modem?

All my in office branches will use ATAs connected to a hub, the
gateway will be to connect the ATAs to the regular phone line (PSTN).

I already have a modem on my pc, will i be able to use it? Why they
recommend those digium modems? In what they differ from the regular
modem?

Thanks
Antonio

 

[Guest]

Archived from groups: comp.dcom.voice-over-ip (More info?)

Antonio wrote:
> To use my Linux based computer as a VOIP<->PSTN gateway i need a
> special modem or a voice modem or could it be any regular modem?
>
> All my in office branches will use ATAs connected to a hub, the
> gateway will be to connect the ATAs to the regular phone line (PSTN).
>
> I already have a modem on my pc, will i be able to use it? Why they
> recommend those digium modems? In what they differ from the regular
> modem?
>
> Thanks
> Antonio

An simplified answer is:

A modem converts data to signals that can be carried by telephone lines.

A digium card converts "talk" from the telephone line to digital signals.

So NO you can't usa a modem to convert "talk" to digital signals and
YES you need a digium card to connect your asterisk to the PSTN network.


/Mats

 

[antonio]

Archived from groups: comp.dcom.voice-over-ip (More info?)

Is there any other cheaper option for digium cards?

"Mats K" <kalle.kula.no.sp_m@ugg-lan.com> wrote in message news:<40a913d6@news.broadpark.no>...
> Antonio wrote:
> > To use my Linux based computer as a VOIP<->PSTN gateway i need a
> > special modem or a voice modem or could it be any regular modem?
> >
> > All my in office branches will use ATAs connected to a hub, the
> > gateway will be to connect the ATAs to the regular phone line (PSTN).
> >
> > I already have a modem on my pc, will i be able to use it? Why they
> > recommend those digium modems? In what they differ from the regular
> > modem?
> >
> > Thanks
> > Antonio
>
> An simplified answer is:
>
> A modem converts data to signals that can be carried by telephone lines.
>
> A digium card converts "talk" from the telephone line to digital signals.
>
> So NO you can't usa a modem to convert "talk" to digital signals and
> YES you need a digium card to connect your asterisk to the PSTN network.
>
>
> /Mats

 

[Guest]

Archived from groups: comp.dcom.voice-over-ip (More info?)

"Antonio" <mouallem@ig.com.br> wrote in message
news:58419c3.0405171831.7197e473@posting.google.com...
> Is there any other cheaper option for digium cards?
>
> "Mats K" <kalle.kula.no.sp_m@ugg-lan.com> wrote in message
news:<40a913d6@news.broadpark.no>...
> > Antonio wrote:
> > > To use my Linux based computer as a VOIP<->PSTN gateway i need a
> > > special modem or a voice modem or could it be any regular modem?
> > >
> > > All my in office branches will use ATAs connected to a hub, the
> > > gateway will be to connect the ATAs to the regular phone line (PSTN).
> > >
> > > I already have a modem on my pc, will i be able to use it? Why they
> > > recommend those digium modems? In what they differ from the regular
> > > modem?
> > >
> > > Thanks
> > > Antonio
> >
> > An simplified answer is:
> >
> > A modem converts data to signals that can be carried by telephone lines.
> >
> > A digium card converts "talk" from the telephone line to digital
signals.
> >
> > So NO you can't usa a modem to convert "talk" to digital signals and
> > YES you need a digium card to connect your asterisk to the PSTN network.
> >
> >
> > /Mats

Have you even bother to take a look at the hardware page at
www.asterisks.org ?

Please read that page!


/Mats

 

[Guest]

Archived from groups: comp.dcom.voice-over-ip (More info?)

On Tue, 18 May 2004 17:57:11 +0200, "Mats K"
<kalle.kula.no.sp_m@ugg-lan.com> wrote:
<snip>
>Have you even bother to take a look at the hardware page at
>www.asterisks.org ?
>
>Please read that page!

I did. However,
www.asterisk.org
works a lot better for learning about Asterisk.
--
John Bartley K7AAY http://celdata.cjb.net
This post quad-ROT-13 encrypted; reading it violates the DMCA.
Nobody but a fool goes into a federal counterrorism operation without duct tape - Richard Preston, THE COBRA EVENT.