Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!netsys!vector!telecom-gateway From: dts@cloud9.stratus.com (Daniel Senie) Newsgroups: comp.dcom.telecom Subject: Re: Strange Phone Problem Message-ID: Date: 1 Jun 89 14:55:03 GMT Sender: news@vector.Dallas.TX.US Organization: Stratus Computer, Inc., Marlboro, MA Lines: 23 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 185, message 5 of 6 In article , ginosko!duane@oddjob. uucp (Andrew Duane) writes: > PROBLEM: the 2 AT&T phones suddenly and simulatenously lost their > ability to dial. They work fine for incoming calls, The problem is most likely due to the reversal of the pair. To check this, open one of the ATT phones and exchange the red and gree wires where they enter the phone and are first attached. ATT made the phones sensitive to the polarity of the phones once-upon-a-time. This allowed the RBOC to flip over the line to keep people who did not order Touch-Tone from using it. Of course the breakup changed all of that... If your friend does not pay for TT service (and nobody should have to...) then just reverse the pairs. Most other telephone manufacturers put a diode bridge in the telephones so that polarity didn't matter. The ONLY negative impact that I have found is that telephones with the diodes require modification to work on party lines. -- Daniel Senie UUCP: harvard!ulowell!cloud9!dts Stratus Computer, Inc. ARPA: anvil!cloud9!dts@harvard.harvard.edu 55 Fairbanks Blvd. CSRV: 74176,1347 Marlboro, MA 01752 TEL.: 508 - 460 - 2686