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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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13th Apr 2010, 8:46 pm | #21 | |
Hexode
Join Date: Feb 2010
Location: Hull, East Riding of Yorkshire, UK.
Posts: 315
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Re: Wiring a 232 to a bellset no 26
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13th Apr 2010, 10:28 pm | #22 | |
Dekatron
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
Posts: 3,687
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Re: Wiring a 232 to a bellset no 26
Quote:
I think the easiest way is to refer to the plug numbers, L to R (which, of course, are reversed WRT the connections on the back of the socket!). Instead of referring to the BT standard plug and lead white, blue and red, think instead 2, 4, 5 (or 5, 3, 2 if referring to the terminals on the back of the socket). Find a method you are comfortable with. I tend to think of the terminals on the back of the socket and take it from there: White from plug = 5 socket back = 2 plug = common speech / loop / bell. Blue from plug = 3 socket back = 4 plug = bell (and anti-tinkle via DON mechanism shunting the bell on instrument doing the dialling). Red from plug = 2 socket back = 5 plug = speech / loop. Years ago I used to remember it all by association: A White sports coat (and a pink carnation): A wire B red (bread): B wire White Fiver: where white goes on the socket. Sit on the cool white earth: relative polarity on socket back. And, of course, the telephone system is positive earth, so the others follow!
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Regds, Russell W. B. G4YLI. |
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