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

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Hi,

I use vgetty for voice, fax and dialin. My linux box unses 
ppp to connect to our uni-network/internet. Sometimes I need
to access my box from anywhere outside via internet (there is 
no modem available).

So I´d like to start the ppp-dialup of my linux box by
doing a simple phone call and sending dtmf-commands. If vgetty
recognizes the code, it should drop the line and start the
ppp-dialup. 

I´ve read the /mgetty-1.1.14/voice/doc/Readme.voice_shell and
everything in /scripts/ but I do not really understand what´s
to do :(

Is there anybody outside who has either a running script to do
something like that oder an RTFM for "standard" users ;) ?

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:

standard operation (vgetty, 5 rings)
...ring....ring....ring....ring....ring...[answer: voice,fax,dialin]


. or :

..ring...ring ...end [detected 2 rings, waiting one minute 
                      for a second call with ecaxtly _one_ ring.]
..ring... end        [detected 2nd call, start ppp-dialup]



Ciao, Bjørn

-- 
        o_)   Bjoern Buerger -  Student of electrical engineering
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