Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version Vortex 1.1 8/4/83; site vortex.UUCP
Path: utzoo!linus!decvax!vortex!lauren
From: lauren@vortex.UUCP (Lauren Weinstein)
Newsgroups: net.dcom
Subject: party line ringing
Message-ID: <151@vortex.UUCP>
Date: Sun, 9-Oct-83 02:19:15 EDT
Article-I.D.: vortex.151
Posted: Sun Oct  9 02:19:15 1983
Date-Received: Mon, 3-Oct-83 23:50:11 EDT
Organization: Vortex Technology, Los Angeles
Lines: 6

There are numerous ways to perform selective party line ringing.
Frequency selective ringers is indeed one of them, while
selective ringing across tip/sleeve or ring/sleeve is another.
Other techniques also exist...

--Lauren--