Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request From: abvax!ncoast!fmsystm!macy@usenet.ins.cwru.edu Newsgroups: comp.dcom.telecom Subject: Re: RJ45 vs RJ11 Message-ID: <8925@accuvax.nwu.edu> Date: 12 Jun 90 14:04:36 GMT Sender: news@accuvax.nwu.edu Organization: F M Systems, Inc. Medina, Ohio USA +1 216 723-3000 Lines: 50 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 10, Issue 431, Message 10 of 11 In article <8765@accuvax.nwu.edu>: X-Telecom-Digest: Volume 10, Issue 419, Message 1 of 11 >In article <8642@accuvax.nwu.edu>, utstat!tg@uunet.uu.net (Tom Glinos) writes: >> I'm looking for the advantages of RJ45 over RJ11. >> Each cubicle that I'm planning will have two jacks. The jacks will >> either be phone or data in any combination. > My motto: "Never pull less than six pair". And sometimes I >regret not pulling twenty-five pair. If a customer does not have any circustances that specifically indicate installation of more pairs (such as an active network), then we recomend these: At each typical phone location: two each RJ-25 jack, three pairs wired each, using two separate three pair cables. At primary answering locations, message centers and data intensive areas: three each RJ-25 jacks, three pairs, using three separate cables. (This is to accomodate DSS's, modems, fax's, attendant consoles and such...all of which can be "pair hogs") At known communications intensive locations: one each 25 pr. cable and two each RJ-25's under separate three pair cable. This is suggested to allow the use of certain services that object to sharing a cable with standard phone lines that ring with 100 VAC. (Certain twisted pair LAN's and other data types do not like the inducted transients from ring generator in adjacent pairs). We have found several vendors who make very nice double RJ-25 jacks in surface and flush mount versions. Getting a technophobic customer to agree to pay for all this wiring is another matter entirely. Many customers still do not understand that the quality and quantity of the wiring is _far_ more important than the way the phones look or feel ... or the name on the switch for that matter ... Phone systems come and go ... wiring is forever (if you do it right!) Another free consulting service from... Macy M. Hallock, Jr. macy@NCoast.ORG uunet!aablue!fmsystm!macy F M Systems, Inc. {uunet|backbone|usenet.ins.cwru.edu}ncoast!fmsystm!macy 150 Highland Drive Voice: +1 216 723-3000 Ext 251 Fax: +1 216 723-3223 Medina, Ohio 44256 USA Cleveland:273-3000 Akron:239-4994 (Dial 251 @ tone) (PLEASE NOTE: the system name is "fmsystm" with no "e", *NOT* "fmsystem")