Path: utzoo!attcan!uunet!husc6!bloom-beacon!mit-eddie!killer!vector!nobody From: pozar@toad.com (Tim Pozar) Newsgroups: comp.dcom.telecom Subject: Re: Tip and Ring reversal Message-ID: Date: 25 Dec 88 06:33:54 GMT Sender: chip@vector.UUCP Lines: 23 Approved: telecom-request@vector.uucp X-Submissions-To: telecom@bu-cs.bu.edu X-Administrivia-To: telecom-request@vector.uucp X-TELECOM-Digest: volume 8, issue 209, message 6 In article john@jetson.UPMA.MD.US writes: >X-Administrivia-To: telecom-request@vector.uucp >X-TELECOM-Digest: volume 8, issue 207, message 2 > >I need some help from TELECOM readers. There's a suggestion for >modifying our project's wiring scheme which would result in tip and ring >being reversed for some number of outlets within a house (residential, >single-pair, POTS usage). What kind of problems will this polarity >reversal cause? Shouldn't cause any hardware dammage. You may notice that some answering machines will not reconize the battery reversal so it may not hangup as soon as the caller disconnects. Also the DTMF pad may not work. On newer phones this shouldn't be a problem. Tim -- ...sun!hoptoad!\ Tim Pozar >fidogate!pozar Fido: 1:125/406 ...lll-winken!/ PaBell: (415) 788-3904 USNail: KKSF / 77 Maiden Lane / San Francisco CA 94108