Actually Paul, modifying a 332 to work on modern style phone jacks is quite easy
Yep, didn't mean to say they were difficult to modify electrically for the modern system. It was a reference to Trumpy's joke about trying to terminate an old braided cord into a modern BT plug which I said I wasn't even going to attempt.
When the modular jacks were introduced in the 1980s there were many 746 phones in service, and we used to modify these in a similar way by adjusting the straps and fitting a new cord. It was a pity that the latter didn't come in all the colors to match the phones.
I don't know how hot BT are on this anymore, they *used* to insist everything complied to BS something or other, but these days it seems pretty much standard to use north amercian equipment,
There was a huge difference between the official position and what happened in practice. I was hooking up all manner of U.S. modems and homebrew equipment to the lines 25 years ago, and never had any queries or problems. If nothing caused any trouble, it was unlikely to be detected. You may remember that there was a lot of imported equipment with the big red "PROHIBITED" triangle on sale in the mid-1980s, just after the red-triangle/green-dot system was introduced in fact. I'm sure nobody would have dreamed of using it......
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Speaking of old jacks, the 316 switchboard plugs are *incredibly* well made by modern standards, the things are a pleasure to connect to. Pity nothing uses 1/4 inch connectors anymore.
Yep, and compared to modular plugs also something of a Captain Scarlett connector -- Indestructible! (Well, almost!)
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How many times do you find a new BT plug with the locking tab broken off? They're worse than RJ11s in this respect. No surprises for guessing that I prefer the old 4-prong American plugs over RJ11 too.
Our rotary dials basically consist of 2 switches. One is open at idle and closes when the dial is turned. The other one is closed in idle an opens while the dial spins back,
As you can see from the schematics here and in the other thread, GPO dials generally had two sets of off-normal contacts, although the exact way they were wired varied on different models.
party line phones had a 10 wire cord).
Due to the relay box to ensure privacy that you've described before?
Our W48 is in regular use, every visitor jumps upon hearing it ring...
Amazing isn't it? People are now so used to beepers and (Ugh!) cellphone tunes htat they jump when they hear a real bell. Unless they're old phone fanatics, not that I would know any, of course....
Think I already told the story of the Zylmurbafi dials...
Had to refresh my memory on that one. And for ECN newcomers, here's the story:
https://www.electrical-contractor.net/ubb/Forum9/HTML/000287.html [This message has been edited by pauluk (edited 04-22-2005).]
