[Asterisk-Users] Any 24 (or 30) way FXS PCI cards?

[Kevin P. Fleming]

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.