Re: mgetty counting rings
On Sat, 9 May 1998, Michael Beattie wrote:
> On Thu, 7 May 1998, David Wright wrote:
> > On Thu, 7 May 1998, Remco van de Meent wrote:
> > > Is there a way to have mgetty (or something else) counting the number of
> > > RING's it receives on the modem line? I want it to write the results with a
> > > timestamp in a logfile, if possible.
> > Or is it the precise number of rings that's important to you?
> > I'm not convinced that the number of rings I hear in the earpiece
> > precisely matches what's being "heard" and logged at the other end.
> In New Zealand, the system is thus:
> One end : RING RING RING RING RING RING
> Other end: RING RING RING RING RING RING
> So that the same number of rings is not always heard at both ends. It is
> never more than one either side though.
Generally, the piece of apparatus which generates rings to be sent
to the phone of the called party (usually about 90VAC at about 20HZ,
interrupted in some pattern which varies from country to country, as I
recall) is completely independent from the piece of apparatus which
generates supervisory tones to be sent to the phone of the calling
party. The `ringback' supervisory tone which is intended to reassure
the calling party that the called phone is ringing has no direct
connection with, and is not in sync with the ringing of the called
party's phone. It could well be:
Called: RING RING RING RING RING
Calling: RING RING RING RING RING RING
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