Re: City Party Line Service |
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![]() Sat, 19 Aug 2006 19:57:12 -0600
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bv124@aol.com wrote:
> Back in the late '60's and early '70's, in Carbondale, IL (GTE),
> I think it was a SxS office.
This type of party line ringing was called "frequency selective" or
Most telcos, especially Bell, have used a standard of 20 Hz for
Also, most party line systems split the line set-up in two "halves".
Regardless of the switching equipment (manual, SXS, Panel, XB, ESS,
Bell telcos rarely if ever used harmonic or tuned or frequency
It was also possible to have fully selective ringing on a 4-party
Thus, you could also have an 8-party system where only two parties at
Some manual systems had machine controlled ringing. The operator
Most telcos these days have discontinued party line systems, although |
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