On Mon, 19 Oct 1998, Andre Coetzee wrote:

> The ideal setup would be to somehow encode the rings, for example the phone
> rings 3 times and hangs up, then after at least 30 seconds but not more
> than 60 seconds, the phone rings another twice and hangs up. Machine A
> would need some sort of daemon process listening all the time to the modem
> port and counting  the number of rings and timing the pauses between the
> calls.

> This is where my imagination has exceeded my skill.

I'm trying to cook up something similar where my machine connects to my
ISP and somehow makes public its IP number when it receives a certain
pattern of rings.  I plan to look at the program xringd.  mgetty may be
able to do it too. 

Ed


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