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London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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Cell phones, British dials
On Apr 1, 10:01*pm, wrote:
On Apr 1, 3:33*pm, Stephen Furley wrote: Somewhat different here. *0 was not used for the operator, at least not in my time, the operator was 100. 0 was used for subscriber trunk dialing. *. *. . *[snip] Your reply came through fine. *Interesting information, thanks for sharing it. Out ringing current is 75 V 25 Hz., rather than your 90 V 20 Hz. *but this is close enough for your straight line fingers to work here, and ours will work over there. I remember in imported British TV shows, ringing phones had the double ring (ring ring pause . . .) as compared to our single ring. *Our office building was eventually set up so that outside calls got the double ring while inside retained the single ring. *Key system telephone sets, which have tone ringers, can be programmed with all sorts of ringing codes, including multiple tones. As for the dials, 10 pps is standard in both places. *The break ratio is different, I think ours is 66% and yours is 60%, or have I got that the wrong way round? The modem manual allows the user to issue AT codes to change that ratio. *When I had rotary service, I changed the pulse rate to 20 pps (left make/break alone). I believe US exchanges that had panel, crossbar, or ESS could handle 20 pps, while step was limited to 10 pps. Well into the 1980s some US rail lines still had magneto (local battery) phones for wayside phones. *I think they were still made until that time. *Modern ones had a small crank in place of the dial. Are you finding that the inks which I pasted in don't work? I am, but if I put the HTTP:// back in they do. Sam Hallas whose site one of he links goes to worked in telecommunications on the railways here. Many Leich telephones with the magneto handle where the dial would normally be turn up on Ebay; I suspect that at least some of those are ex railway. |
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