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Joined: Apr 2007
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I mentioned this is another thread and said that I would dig out the old cable code which was used in the U.K. in years gone by. So for anyone interested in long-obsolete systems from an ocean away, here are two pages which describe the coding and cable makeup from Atkinson's "Telephony," 1950 edition: https://myweb.tiscali.co.uk/paulcoxwell/TEL/Tel1_295.jpg https://myweb.tiscali.co.uk/paulcoxwell/TEL/Tel1_296.jpg It's not shown in the chart, but the standard 4-wire cable used for subscriber premises wiring used the solid colors blue, orange, green, brown.
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Joined: May 2002
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That's as bad as odd count pic. Thanks for sharing.
Retired phone dude
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Joined: Mar 2002
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What is the 3rd wire used for on the British system?
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Joined: Jul 2007
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Nope, don't push your site or supplies.
Charles Cerminara
Director of instalation and selling departement
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Joined: Apr 2007
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Originally posted by djweis:
What is the 3rd wire used for on the British system? My apologies for missing this question over a month ago!  The cables listed as "triples" on those pages were typically used for internal exchange wiring. The third wire of the circuit was for control -- The sleeve connection on a cordboard jackfield or the P-wire on Strowger switches (used to mark busy trunks and control the holding of the connection).
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