Martin Underwood wrote:
"John Shelley" wrote in message
news
snip

Ah, so new suscribers in an area potentially get a brand new district
number that's unrelated to that of all the other subscribers in that
area? Yes, I suppose that's one way of solving the problem. Do all
subscribers in one area get one new code and all those in another
area get different code: can you still say "xxxx [a new code] is
Harrow, alongside yyyy [the existing code]" or is the
code-to-location mapping lost?

The code to location mapping is, I believe, becoming blurred. My BT phone
is 020 8863 xxxx, and my NTL phone line 020 8357 xxxx. How big an area the
NTL 8357 covers I don't know, and my BT knowledge is now rusty, 12 years out
of it. What you can say is all esubscribers numbers on an specific exchange
number are within a specified area (excluding out of area lines of course).
The size of the area will vary and the area may well cover some, or all, of
the area covered by another exchange. This is definately a possible, maybe
situation.


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Cheers for now,

John from Harrow, Middx

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In article , John Shelley
wrote:
What you can say is all esubscribers numbers on an specific
exchange number are within a specified area (excluding out of area
lines of course). The size of the area will vary and the area may
well cover some, or all, of the area covered by another exchange.

This came up in uk.telecom a good while back and someone pointed me
to a site that no longer exists (or I'd quote the URL) which at the
time told me that my home and business numbers, 020 8744 2xxx, are
from Garfield Road, Twickenham. Other 020 8744 numbers go to
Whitton, Hayes and Southall exchanges - the last two are nowhere
near Twickenham. If the site was right 020 8744 50-55 (600 numbers)
go to Whitton, 020 8744 56-59 (just 400 numbers) go to Hayes. Odd?

--
Tony Bryer

On Fri, 31 Dec 2004 15:11:59 GMT, "John Shelley"
wrote:

Martin Underwood wrote:
"John Shelley" wrote in message
news
snip

Ah, so new suscribers in an area potentially get a brand new district
number that's unrelated to that of all the other subscribers in that
area? Yes, I suppose that's one way of solving the problem. Do all
subscribers in one area get one new code and all those in another
area get different code: can you still say "xxxx [a new code] is
Harrow, alongside yyyy [the existing code]" or is the
code-to-location mapping lost?

The code to location mapping is, I believe, becoming blurred. My BT phone
is 020 8863 xxxx, and my NTL phone line 020 8357 xxxx.

This is indeed the case. I used to work in Intelligent Networks,
setting up number translation services for large national companies
who would want all callers to be routed to their nearest local office.
Firstly, they would invariably give us their requirements in terms of
postcodes, which would necessitate a long explanation to the account
manager of how postcodes were a system used by the Royal Mail to
distribute letters and parcels, and there wasn't a one-to-one mapping
to STD codes, and secondly, it was usually impossible to meet their
requirements when it came to non-BT numbers, as cable companies seemed
to assign their Manchester (for example) 1000-number blocks to cover
the entire city, in the order customers were signed up...

Charlie

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