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Old 11th May 2020, 4:40 pm   #34
Pellseinydd
Heptode
 
Join Date: Jul 2007
Location: Flintshire, UK.
Posts: 707
Default Re: The space in the STD codes

Quote:
Originally Posted by julie_m View Post
Yes, if you were in Burton-on-Trent then you dialled 73 for an Etwall 4-figure number. From Etwall, you had to dial 9 for a Burton number.

The only changes really, going from 4 to 6 figures, were that (1) anyone in Etwall had to remember to put 73 in front of any number in the village and omit the initial 9 from any local code starting with a 9, and (2) the 963 short code from Derby (Burton from Derby was 962, and the other Burton satellites were 962 7x, but Etwall used to have its own special short code from Derby) no longer worked. For anyone calling an Etwall number from anywhere else, the digits dialled were the same.

As for local dialling oddities, there were a few around my area. Derby to Ashbourne was 91, Burton to Derby was 93 but Burton to Ashbourne was just 939. I guess the inbound trunk dropped straight into the middle of a hunt group like that to prevent chaining of local codes. Absit omen someone in Etwall should get a call to Belper at local rate; even though they could dial all the way to Cannock in Staffordshire, some 50km away, at local rate!

The Harewood thing might have been charging-related (and subsequently found not to be worth bothering to charge the extra for), or it might have had something to do with numbers of trunk lines between exchanges.
<snip>.
Just a small point - in telecoms, the term 'satellite' refers to an exchange in an LNS (Linked Numbering Scheme) where the other exchanges didn't dial a code to reach a particular exchange in the LNS. In an LNS there was normally an exchange designated as the 'main' exchange where the interlinking was originally done but things developed over the years. Hence Etwall did not become a satellite until around 1990 when it went digital and became part of the Burton-on-Trent LNS The subscribers became 'Burton-on-Trent' numbers by prefixing then with '73' the old code previously from the 'Main' exchange in the group of exchanges. This was possible with the relevant exchange having four digit numbers.

The smaller exchanges off a main' exchange were 'dependent' exchanges - mainly UAXs but larger ones could be Non-Director exchanges as in the case of Etwall.

You'd be surprised how things changed over the years. 'Burton-on-Trent' was originally a Linked Numbering Scheme including Tutbury and Swadlincote exchanges.

In those days they were both Non-Director exchanges - however in 1955 Tutbury was replaced by a UAX14 becoming 88 off Burton but moved back into the LNS when it became a K1 Crossbar satellite in the 0283 Linked Numbering Scheme.

Swadlincote (Non-Director) was later to become 87 off Burton (moving back to being a satellite in the 0283 LNS on 31st March 1976 as 'Burton-on-Trent numbers but still on 'Swadlincote' exchange which just became the 'engineering' name for the exchange.

A number of the exchanges in the Burton-on-Trent 0283 group had direct junctions to Derby Exchange - 0332 Group Switching Centre.
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