Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!bellcore!texbell!vector!telecom-gateway From: westmark!dave@uunet.uu.net (Dave Levenson) Newsgroups: comp.dcom.telecom Subject: Re: Crosstalk Problem Message-ID:Date: 12 Aug 89 20:36:36 GMT Sender: news@vector.Dallas.TX.US Organization: Westmark, Inc., Warren, NJ, USA Lines: 26 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 293, message 5 of 5 In article , siegman@sierra.stanford. edu (Anthony E. Siegman) writes: > I have a crosstalk problem between my two residential lines, and would > appreciate suggestions for alleviating same. ... > Situation: Two residential lines coming into my house -- an old > installation, no conduit, the incoming service is just a lead-sheathed > bundle of 4 wires coming under the street and up out of the ground at > my outside utility box (can't add a 3rd line for my modem!). ... > weather proof wires under eaves), and also as a four-wire cable (NOT > two twisted pairs, at least I don't believe so, just 4 colored wires) The problem is that the two lines run parallel in a non-twisted cable. Twisted pairs are used to reduce electromagnetic coupling between the circuits. Four-wire station quad is not intended for use in carying two lines, though it's often done without problems for short runs. Perhaps you can use the existing quad as a drag line to help pull through the twisted pair that will replace it! -- Dave Levenson Voice: (201) 647 0900 Westmark, Inc. Internet: dave@westmark.uu.net Warren, NJ, USA UUCP: {uunet | rutgers | att}!westmark!dave [The Man in the Mooney] AT&T Mail: !westmark!dave