🚀 go-pugleaf

In <C14wy0.Aqy@hatch.socal.com> richg@hatch.socal.com (Rich Greenberg) writes:

>In article <michaelm.727416353@extro.ucc.su.OZ.AU> michaelm@extro.ucc.su.OZ.AU (Mike McCormack) writes:
>>Does anyone know how caller ID works (ie. from a technical viewpoint)?
>>I read an article in the paper about it, which told me what it does,
>>but said nothing more than "it is a little black box you connect to your
>>phone". Does the exchange send out caller ID info by default or do you
>>have to ask for it?

>If you subscribe to and pay for the service, the data is sent in ASCII
>at 1200 baud (but NOT the usual 1200 baud modem tones) between the
>first and second rings.

	So, theoretically, one could modify and old 1200 baud modem to use the 
modified tones (or even just pass the signal through some kind of filter to
transform the tones to normal 1200 baud tones) and have caller ID for free?
I've kind a smattering of the concepts here, but I'm not sure if this is
possible, could someone who knows better fill me in?

	BTW, when I say free, I mean in the sense that I wouldn't have to go
out and by a caller ID phone, since I'd still have to subscribe to get
the information coming down the line.

-- 
     Chris Kirby                        |                    
     ckirby@silver.cs.umanitoba.ca      |          APATHY RULES !!!
     University of Manitoba             |        ( but who cares? )
     Winnipeg, Manitoba                 |