Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker.mit.edu!bu.edu!news From: news@bu.edu.bu.edu (News) Newsgroups: comp.dcom.telecom Subject: Re: Phone Dinging Around 2 AM Message-ID: Date: 8 Mar 91 08:10:29 GMT Organization: TELECOM Digest Lines: 25 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 186, Message 5 of 14 In article , think!barmar@bloom-beacon. mit.edu (Barry Margolin) writes: > On most nights, somewhere between 2 and 3 AM, my phone will > spontaneously emit two tiny rings (it has a real bell, not a tone > generator, and goes ding -- ding). (stuff deleted) > Does anyone have an idea what's causing this? Does NEw England Tel > send out some kind of test pulse that my phone (an AT&T Trimline 230) > is oversensitive to? The telco is doing automated testing in the middle of the night. The phone is probably sensitive to belltap ... meaning that it would tend to 'ding' when an extension with a rotary dial is dialed. The ringer is responding to a test voltage on the line that has a fast rising edge. Tad Cook Seattle, WA Packet: KT7H @ N7ENT.#WWA.WA.USA.NA Phone: 206/527-4089 MCI Mail: 3288544 Telex: 6503288544 MCI UW USENET:...uw-beaver!sumax!amc-gw!ssc!tad or, tad@ssc.UUCP