Path: utzoo!attcan!utgpu!utstat!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!netsys!vector!telecom-gateway From: westmark!dave@rutgers.edu (Dave Levenson) Newsgroups: comp.dcom.telecom Subject: Re: Number of devices on 1 line? Message-ID: Date: 9 Jun 89 02:26:45 GMT Sender: news@vector.Dallas.TX.US Organization: Westmark, Inc., Warren, NJ, USA Lines: 19 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 191, message 4 of 9 In article , nobody@cs.buffalo.edu writes: > How many devices can a single residential line support? At the moment I have > 4 telephones, 1 answering machine, and 1 modem on the line. I am about to > add a second modem and another phone. Is this "safe", and will it work? What you must do is add up the ringer equivalence numbers of the various devices you wish to connect. The maximum total REN for a given subscriber line depends upon the serving central office, and on the length of the loop. Your telco probably has the information, but it may be difficult to speak with the right person. Bellcore publication PUB61100 "Description of Analog Voiceband Interface Between the Bell System Local Exchange Lines and Terminal Equipment" is the definitive technical reference for this sort of thing. -- Dave Levenson Westmark, Inc. dave@westmark.uu.net Warren, NJ, USA {uunet | rutgers | att}!westmark!dave [The Man in the Mooney] N5848Q