Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!usc!apple!agate!telecom-request From: whs70@taichi.bellcore.com (24460-W. H. Sohl(L145)) Newsgroups: comp.dcom.telecom Subject: Re: Information Needed on Broadband ISDN Message-ID: Date: 26 Mar 91 15:22:44 GMT Sender: Telecom@eecs.nwu.edu Reply-To: "24460-W. H. Sohl" Organization: Bellcore, Livingston, NJ Lines: 39 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 243, Message 1 of 14 In article edsr!jcn@uunet.uu.net (Jim Niemann) writes: > What research is being done in broadband ISDN? Is it possible to > purchase a prototype switch that supports it? Bellcore (Bell Communications Research, Inc) is making plans for an industry forum on Broadband ISDN to be hosted by US West on May 22 & 23. For additional information on registration, etc. contact: William Rubin, BISDN Product Manager (908-758-2167) 331 Newman Springs Road (Room 2X-421) Red Bank, NJ 07701 or Alan Tedesco, Dist. Mgr, BISDN Systems Engineering (908-758-5066) Same address as above except room # 1H-258 In article barefoot@garfield.catt. ncsu.edu (Heath Roberts) writes: > By broadband ISDN, I assume you're referring to primary rate access. Broadband ISDN is a digital "pipe" significantly higher in bandwidth than "primary rate" ISDN. Briefly, there are three types of ISDN access: Basic Rate: two B channels of 64 Kb each and one 16 Kb D channel used for signaling and also capable of packet data transmission. Primary Rate: a 1.544 megabit (DS-1 rate) access arrangement that can be configured in different ways, but in it's most common form consists of 23 B channels of 64 Kb each and one D channel, also at 64 Kb for signaling. Broadband ISDN: A digital rate significantly greater than Primary.