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From: daemon@ucbvax.BERKELEY.EDU (The devil himself)
Newsgroups: mod.telecom
Subject: RJ-25 connector
Message-ID: <8601031832.AA28581@GODOT.THINK.COM>
Date: Fri, 3-Jan-86 13:32:18 EST
Article-I.D.: GODOT.8601031832.AA28581
Posted: Fri Jan  3 13:32:18 1986
Date-Received: Sun, 5-Jan-86 14:56:32 EST
Organization: The ARPA Internet
Lines: 11
Approved: telecom@mit-xx.arpa

According to a catalog I have here of such things, an RJ-25C is a six-wire 
modular connector set up to talk to three separate voice pairs.  The 
connector is physically the same as the familiar RJ-11 except that all six 
pins are hooked up.  They say it is for "three separate telephone lines for 
use with desk sets and ancillary devices." An RJ-25W would be the same 
thing behing a wall-mount plate.  

I have never seen a phone that wanted such a hookup.  Sounds pretty 
exotic.  

John Levine, Levine@YALE