[Freeswitch-users] Modems

[Michael Collins]

Check out the Linksys SPA-3102
-MC

On Mon, Aug 9, 2010 at 11:49 AM, Ken Gillett <ken at ukgb.net> wrote:

> Well that's the alternative, but I confess to being unclear on one aspect
> of such devices.
>
> In a simple scenario of several SIP devices registered to a SIP server plus
> a PSTN analog line, it is relatively simple to see how PSTN to VOIP bridging
> can be implemented with a gateway device that includes an FXS, FXO and
> ethernet port. An incoming call on the PSTN causes the gateway to initiate a
> call via the SIP server to SIP client devices registered on that ID and then
> putting the 2 ends of the call together so the PSTN call is 'bridged' onto
> VOIP and being handled by a SIP client device, i.e. a softphone or SIP
> telephone.
>
> But what about the reverse? My requirement is not only for the above basic
> ATA, but to be able to bridge VOIP to PSTN. IOW so that a SIP client can
> make an outgoing call onto the PSTN. Both the gateway and the SIP client are
> registered to a SIP server (same one in fact), how does the SIP client place
> a call onto the PSTN? The gateway is not a SIP server, what is the process
> by which a SIP client can tell such a gateway to place a call on the PSTN to
> the number that is somehow provided to the gateway by the SIP client?
>
> I am actually trying this out with a Zoom 5801 which with an FXO and FXS
> port and the ability to bridge in both directions can apparently do what I
> require, but I cannot get my head around what I am even trying to get it to
> do. And this is before I've even thought about bringing FreeSwitch into the
> equation.
>
> I'd be grateful for any advice about this. Thanks.
>
>
> On 8 Aug 2010, at 20:49, Tony Graziano wrote:
>
> > You can always use a standalone sip gateway (patton, audiocodes, etc.).
> >
> > On 8/8/10, Ken Gillett <ken at ukgb.net> wrote:
> >> I asked this before, but never got any response, so hope someone can
> help me
> >> this time.
> >>
> >> Is it possible to use a (USB) modem as a 'trunk' to and from the PSTN,
> i.e.
> >> be able to accept incoming PSTN calls and also make PSTN calls?
> >>
> >> I plan on installing FreeSwitch on a Mac and it would be really handy to
> be
> >> able to use Apple's USB modem in this way as otherwise there's no way to
> add
> >> such PSTN functionality on the Mac Mini.  Although my requirement is Mac
> >> based, I guess this question applies to any FreeSwitch installation.
>
>
>
> Ken G i l l e t t
>
> _/_/_/_/_/_/_/_/
>
>
>
>
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