[MLB-WIRELESS] Free P2P phones will pressure telcos

Jamie Lovick jalovick at doof.org
Wed Nov 12 15:51:33 EST 2003

On Wed, 12 Nov 2003, Tony Langdon wrote:
> > I was thinking recently how nice it'd be to use a normal 
> > phone for VoIP. 
> >   I have an old FM analogue cordless phone at home which I'll 
> > see if I 
> > can hotwire the soundcard to the internals, bypassing the transhybrid 
> > circuit and gyrator and hook the lineout and mic directly to 
> > the audio 
> > lines on the radio section.  You could possibly hotwire a pin 
> > from the 
> > parallel port to activate the ring logic too....  Hrmmmmm.....
> > 
> > Anyone done this, BTW?
> No, but very doable, and of dubious legality, because the phone is
> also a type approved radio transmitter, and the mods would most
> likely void that type approval.  Still, an interesting idea.

Yeah, the device would fall under a class licence.

> The way around that issue would be to interface the PC to a phone
> line simulator, which the phone plugs into.  Hmm, how easily could
> we simulate a phone line using a PC and some add on hardware?  Gee,
> you could have busy signalling and all, if the software supported
> it. :)  This approach would also allow the use of unmodified
> landline handsets.

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