Mail from ILUG-BOM list (Non-Digest Mode)
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--- Vinil Menon <[EMAIL PROTECTED]> wrote:
> Mail from ILUG-BOM list (Non-Digest Mode)
> _______________________________________________
>
> OH my gosh, where did u ppl take the thing to ?
> Just connect the two pcs and its as simple as
> atdt any number.
> if no s/w is available u can do `echo
> "atx1dt1" > /dev/cua1` for com2
> most new modems can generate the required
> tones. cmon pals, if that thing
> couldnt generate the freqs. it has no right to
> wear the name of a
> modulator-demodulator.
>
> Sincerely,
> Vinil
>
> BTW, i didnt require those xformers for
> transferring data
> just try it
You can generate & detect any tone (including non
dtmf) by reporgramming the biquad filters in the
modem (they are virtual, u need to programme the
DSP filter coefficients, simple but that's
another story). However u cannot generate the
ring voltage of 90v which has got nothing to do
with the 0 dbm (1.4v i think) dtmf signal. Ring
signal is generated only from the exchange.
Standard modem cannot generate this (special test
modems & line testers do).
U see the 2nd machine is headless , hence no
manual interaction except thru the 1st machine.
Also only one (or was it none) phone line.
And blame Satya for trying to do this and getting
us in a tangle ;-)).
rgds
[EMAIL PROTECTED]
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