start ppp-dialup by calling vgetty (either dtmf or detecting number of rings) ?

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Hi,

On Fri, Nov 13, 1998 at 11:48:50PM +0100, Bjoern Buerger wrote:
> Gert ?
> Would it be possible to avoid the cost of a phone call 
> by detecting the number of incoming calls ? 
> I´ve just thought of something like this:

It would be possible, but integration into mgetty would be SO ugly that
I'm not willing to do it.  You could get the data from the log file
("phone stopped ringing, rings=<n>").  Never forget that the RING signal
is asynchronous to the tone you hear on the calling side, so if you hear
two "tuuuut" sounds, it might have rung three times already, or only
once...

A better, because much more reliable, approach is to use an ISDN phone 
line and evaluate caller ID / destination MSN.

gert
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
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