Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!husc6!cmcl2!nrl-cmf!ames!ucbcad!ucbvax!umb.EDU!ileaf!io!hineni!coe From: coe@hineni.UUCP Newsgroups: comp.dcom.telecom Subject: Two extensions via three wires? Message-ID: <8711170300.AA01856@hineni.io.uucp> Date: Mon, 16-Nov-87 22:00:55 EST Article-I.D.: hineni.8711170300.AA01856 Posted: Mon Nov 16 22:00:55 1987 Date-Received: Mon, 23-Nov-87 04:17:38 EST Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Chet Edelman Organization: Interleaf, Cambridge, MA Lines: 15 Keywords: two extensions common ground Approved: telecom@xx.lcs.mit.edu I have a situation where I want to have two extensions carried by three wires. I have a four-wire cable going between floors, with two of the wires shorted together. It would be much easier to use the existing cable than to rip it out and string a new one. Is it possible to make the two lines share a wire, is there a common ground? If it is possible, which should I make common. I know there is something called tip and ring, but how do I tell one from another? Please send mail directly to me, I'll summarize. Thanks. -- Chet Edelman "Here am I" Interleaf Inc. 10 Canal Park coe@umb.EDU (coe%umb.edu@relay.cs.NET) Cambridge Ma 02141 {sun!sunne!ileaf!io!hineni,harvard!umb}!coe (617)577-9813x3425