Re: mgetty counting rings
On Sat, 9 May 1998, Bill Mitchell wrote:
<snip>
> > 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
My apologies, I must have been using some 'well paired' phones when I
tried it out last year.. but anyway, the result I got was what I wrote
above.
Michael Beattie (mickyb@es.co.nz)
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