From: Kevin Dunleavy (kevind at domain iona.com)
Date: Fri 14 May 1999 - 14:02:07 IST
Martin Donlon wrote:
> I know that some european BBS's use the D channel when they are polling to
> see if there is mail on the other end without having to knock up any bills.
> If you were send email through it both sides would have to be set up for it,
> of course.
Esat can set up an "on demand" link in reverse. (Don't know whether TE
will do it for you.)
When a request comes in for a page on your webserver a signal is sent
(presumably over the D channel) and then _your_ side brings up the ISDN
line. This allows you to run a webserver on an ISDN line, without having
the line open 24/7. It also simplifies the billing, as the calls go
straight onto your bill.
They aren't too keen on this option though, and recommend against it.
(They also charge a premium on top of the regular ISDN charges.)
If you run it that way, anytime your website is hit you can take down
the mail at the same time.
Note, this isn't the most economical way to go about it. But it might
suit a narrow range of circumstances.
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