Path: utzoo!telecom-request Date: Sun, 12 May 91 18:37:26 CDT From: Thomas J Roberts Newsgroups: comp.dcom.telecom Subject: Re: Help Needed Understanding ISDN Message-ID: Organization: AT&T Bell Laboratories Sender: Telecom@eecs.nwu.edu 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 355, Message 9 of 9 Lines: 28 From article , by csense!bote@uunet.uu. net (John Boteler): > Toby Nixon typed: >> Rich Szabo writes: >>> Can an ISDN line be used as a voice line so that I don't need a >>> POTS line in addition? >> You definitely don't need to keep a POTS line around once you have >> ISDN. > Unless the power fails at your location. Then, no more ISDN. Correction: Unless the power fails AND YOU HAVE MADE NO PROVISION FOR THIS. Then, no more ISDN. In every ISDN installation I have been involved with (either as user, or consultant, or designer/engineer - some 20,000 lines in all), battery-backed-up power has been supplied for the NT1s and the station sets. Most users want phones that work during a power outage. Tom Roberts AT&T Bell Laboratories att!ihlpl!tjrob TJROB@IHLPL.ATT.COM