Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!netsys!vector!telecom-gateway From: khl@cunixc.cc.columbia.edu (Kenneth H. Lee) Newsgroups: comp.dcom.telecom Subject: answering machine and dialup modem. Message-ID: Date: 19 May 89 21:19:34 GMT Sender: news@vector.Dallas.TX.US Lines: 42 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 170, message 1 of 9 My setup is as follows: Two phone lines coming into my room. Line 1 is normally used for voice calls and line 2 is used for my modem calls. All my jacks are wired back to an entrance bridge I have near the telco network interfaces with 4-wire station cable. I use six inch modular to spade lug line cords to connect from the bridge to the telco network interfaces. Line 1 is supplied via the RED/GREEN pair while line 2 is supplied via the BLACK/YELLOW pair of the jacks. My problem is that when I am logged onto any system via my dialup modem and my answering machine answers my phone, my modem drops carrier and my session drops. I can also hear my modem carrier whenever I use line 1 and the modem is in use. It seems to me that the answering is causing some sort of glitch on line 1 that is being picked up on line 2 whenever it answers an incoming call. Question 1: What can I do to prevent this from happening, short of wiring a new jack which has two cables running to it, one supplying line 1 and the other supplying line 2. Question 2: If I had wired my jacks using twisted pair cable instead of the 4 wire station cable, would I still be seeing this problem? Would it make a difference if the cable were shielded? The reason for question 2 is if I ever move into a different place, should I wired my jacks using 4 wire station cable or with twisted pair cable? I figure I might as well get things right the next time around, since I will in all likelyhood have at least two phone lines coming into my next house/apartment. Any help or insights would be greatly appreciated. /k Kenneth H. Lee khl@cunixc.cc.columbia.edu Columbia University ...{topaz|rutgers}!columbia!cunixc!khl 209 Watson, 612 West 115 Street khlcu@cuvmc.bitnet New York, NY 10025 (212) 854-8230