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From: TERRY@spcvxa.bitnet (Terry Kennedy, Operations Mgr)
Newsgroups: comp.dcom.telecom
Subject: Re: More on Frequency-Selective Ringing
Message-ID: <telecom11.252.6@eecs.nwu.edu>
Date: 28 Mar 91 16:30:51 GMT
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X-Telecom-Digest: Volume 11, Issue 252, Message 6 of 11

In article <telecom11.247.1@eecs.nwu.edu>, 0004133373@mcimail.com
(Donald E. Kimberlin) writes:

>         So far, I never met anyone who could tell me just *how* Bell
> did eight-party with WECo-built appratus. (No weasel stories now,
> about apparatus WECo bought, resold and installed in some places.  I
> know they'd do that if they had to!)

  Well, BSP 501-250-300, Issue 2, January 1963 describes a system
where up to four parties can be signalled using Ring Party on tip,
Ring Party on ring, with + or - bias, and gives the codes for the
ring-back systems to select the right party. No direct mention of
eight-party ringing service is made, but there are two items of
interest: "Eight party line stations in step-by-step dial areas" as
well as a mention of "one-ring party" and "two-ring party", which
might mean that both subscriber's instruments rang, but with
distinctive ringing.

        Terry Kennedy           Operations Manager, Academic Computing
        terry@spcvxa.bitnet     St. Peter's College, US
        terry@spcvxa.spc.edu    (201) 915-9381