RE: Protect and survive

[Keith Doxey <keith.doxey@xxxxxxx>]

Hi Ian,

<PEDANT MODE>

I knew what you meant but what you said was
"if the line went down?"
not if the ADSL sevice failed. :-)

</PEDANT MODE>

Of course you might have a second analogue line as well, just as I did
before upgrading to Home Highway a few months ago.

Home Highway is TRUE DIGITAL.
The line provides enough power to drive the digital electronics if you have
a mains failure but there is no actual analogue sevice to your home.

HH is better than ISDN as without power for your terminal adapter or ISDN
PBX you have no service in a power cut.

If the HH box dies you have no service whatsoever as a certain Mr.M.McCall
will testify!!

Keith.

> -----Original Message-----
> From: Ian Lowe [mailto:ian@xxxxxxx]
> Sent: 11 August 2000 13:12
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Protect and survive
>
>
> --- Keith Doxey <keith.doxey@xxxxxxx> wrote:
> > Slight flaw in your plan Ian,
> >
> > ADSL is delivered over your telephone line.
> > If the line went down so would your phone service so no backup
> > modem!!
>
> Not Quite: ADSL is delivered over the same cable as your telephone
> line, so if you get a physical fault it will still wipe out both, but
> the ADSL carrier is piggybacked: it uses a higher frequency range than
> both your POTS service and ISDN. (despite what BT say on the subject!)
> if you ADSL NTU dies, you will still have phone service.
>
> Just as with Home Highway: if the box dies, the line still operates as
> a normal phone line. (which is why you should always have a phone
> connected to Analog port 1 on your Home Highway box: in the event of a
> power failure, you still have a phone service!)
>
>
> =====
> >+++
> Ian R Lowe. Director, Wintermute Consultancy Ltd.
> e-mail: ian@xxxxxxx
> Onward and Upward! Towards Ascension!
>
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