Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!rpi!bu.edu!telecom-request From: tots!tots.Logicon.COM!tep@ucsd.edu (Tom Perrine) Newsgroups: comp.dcom.telecom Subject: An Old Instrument Develops Bell-Tap Message-ID: Date: 3 Mar 91 00:45:16 GMT Sender: news@bu.edu.bu.edu Reply-To: Tom Perrine Organization: Logicon, Inc., San Diego, California Lines: 38 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 175, Message 11 of 13 In article bruce@camb.com (Barton F. Bruce) writes: X-Telecom-Digest: Volume 11, Issue 167, Message 1 of 11 > The traditional ringer IS sensitive to the polarity of pulses! Aside > from adjusting the bias spring, the 'proper' cure for BELL-TAP > (tinkeling as a rotary extension or other party dials or even just > goes on/off hook) is to have the phone's two wires connected properly > to TIP and RING. > There may be a bias spring that can be hooked to a stiffer notch that > will help. I am asking this question because the original article meseems to be talking about TT phones and their ringers. My father-in-law has a real Bell rotary phone that was installed in 1960. It has, of course never been serviced. In the last ten years or so, it has developed what sounds like bell-tap; when you dial, the ringer makes one "ding" for every pulse in the number. When an extension was added (by TPC), we discovered that dialing the extension (a cordless, set to pulse-dial) also causes the original phone to "ding". Is this "bell-tap"? Is it a matter of reversing the polarity on the pair, or is it due to wear in the electro-mechanical ringer? After thirty years, I would assume that it could be a *little* out of adjustment :-). Inquiring minds want to know! Tom Perrine (tep) |Internet: tep@tots.Logicon.COM Logicon - T&TSD | UUCP: sun!suntan!tots!tep P.O. Box 85158 |GENIE: T.PERRINE San Diego CA 92138 |Voice: +1 619 455 1330 | FAX: +1 619 552 0729