[MLB-WIRELESS] Free P2P phones will pressure telcos

Tony Langdon tlangdon at atctraining.com.au
Wed Nov 12 15:30:23 EST 2003

> 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.

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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