In message <[log in to unmask]>
"Ahmad Risk" <[log in to unmask]> wrote:
> On Fri, 18 Sep 1998 20:25:52 +0100, John D Dalton wrote:
>
> >What is the difference between this and ISDN 2?
>
> 1. It modifies your existing analogue line (no new installation)
> 2. You get 3 analogue lines to hang off any analogue devices you have
Actually, it's two analogue lines and two digital channels. Any two of the
four can be used at once. The analogue lines have a number each and the
digital channels have a third number for both channels.
You can usually migrate your existing number to the first analogue port,
but for some reason (probably related to BT's sales software) you
cannot migrate your existing second line number (if you have one) to
the second analogue port.
> 3. That means you can now buy the cheaper ISDN TA without analogue
> portsto
Or even a router. The price has come down a lot.
> 4. With MSN, you can assign different telephone numbers to the analogue
> devices (up 10 numbers, I think)
No, this isn't available on Home Highway.
5. You must be within 3km of the exchange (unlike ISDN2E) as there must
be sufficient power available on the line to provide ringing current on the
first analogue line in the event of a power failure. You would need a UPS
on ISDN2E.
6. Existing valueplan services such as CLID, call diversion etc should
continue to work on the analogue lines.
7. BT aren't exactly making HH easy to obtain. I was told that there was
no available capacity at the exchange when I tried to order it. So I
enquired about an ISDN2E system (at business rates). "No problem" :-(
Glossy brochure at:
http://www.homehighway.bt.com
Hard facts at:
http://www.serviceview.bt.com/list/notifs/17-08-1998/Exchange_Lines/00131.htm
John
--
Dr John Hampson
Rossendale, Lancashire, UK
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