Rich Adamson wrote:
Likewise for a pc card supporting 24 fxs lines. The probability of three
or more lines ringing at exactly the same time are very small. With at
least a little engineering forethought, its not that difficult to
create ring cycles where ports 1 through 6 ring during some period,
followed by 7 through 12, etc. (That's actually how most central offices handle ringing now with a couple of exceptions.)
Yeah, with the most obvious except being that in a very large number of cases, subscriber loops are now serviced by SLC/DLC systems, instead of direct analog transmission from the CO :-)
However, I'd bet money that the SLC/DLC systems use this technique as well, for the very same reasons.
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