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Xref: sserve comp.sys.powerpc:33712 comp.sys.intel:31185 comp.unix.bsd:16060 comp.unix.pc-clone.32bit:8106 comp.unix.sys5.r4:9171 comp.unix.misc:15907 comp.os.linux.development:23245 comp.os.linux.misc:34774 comp.os.386bsd.development:3131 comp.os.386bsd.misc:5237 comp.os.misc:3762 Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!newshost.marcam.com!news.mathworks.com!uunet!nntp.cac.washington.edu!olsenc From: olsenc@kodiak.ee.washington.edu (Clint Olsen) Newsgroups: comp.sys.powerpc,comp.sys.intel,comp.unix.bsd,comp.unix.pc-clone.32bit,comp.unix.sys5.r4,comp.unix.misc,comp.os.linux.development,comp.os.linux.misc,comp.os.386bsd.development,comp.os.386bsd.misc,comp.os.misc Subject: Re: X on dial-in Date: 6 Feb 1995 17:28:34 GMT Organization: University of Washington, Seattle Lines: 38 Message-ID: <3h5m82$tr@nntp1.u.washington.edu> References: <3f44s2$jqm@maverick.maverick.tad.eds.com> <D3Fp3y.1EI@park.uvsc.edu> <D3IDK1.B73@bonkers.taronga.com> <3h4363$jqv@deep.rsoft.bc.ca> NNTP-Posting-Host: kodiak.ee.washington.edu In article <3h4363$jqv@deep.rsoft.bc.ca>, Curt Sampson <a09878@giant.rsoft.bc.ca> wrote: >In article <D3IDK1.B73@bonkers.taronga.com>, >Peter da Silva <peter@bonkers.taronga.com> wrote: > >>Look, the bottom line is that for the phone company I'm using *less* of >>their resources leaving a computer hooked to my ISDN line 24 hours a day >>than making a few video calls. Whether I'm "connected" or not, their >>resources are only tied up when I send packets, and video chews up a >>shitload more packets than my newsfeed, Mosaic, and telnet sessions. > >This is, unfortunately, not the case. Whenever you have a telephone >circuit connected to someone else you're using one of the limited >numbers of circuits available in the switch. Telephone exchanges do >not have anywhere near as many circuits as they have local loops >connected to them. (Our AT&T PBX (which very much resembles a small >version of modern AT&T local branch office switches) for example, will >support several thousand telephone extensions (local loops), but no >more than about 500 simultaneous circuits at once. As well, the trunk >capacity between offices is limited, and your connection would >probably be tying up one of these trunk lines permanently. > You apparently haven't heard of LAN-DIAL ISDN. If you do this, then the routers handle all the call setup on the fly. The only time the line is live is when there are packets to be sent either direction. Assuming that you're not running an ftp server, the line would be free during idle hours. I haven't seen it yet, but supposedly you can successully network over a line in this manner like it was a permanent connection. The call setup takes a second or two. PSI, as lame as they are, have an offer to run either ISDN on-demand or a permanent connection. I don't see anything wrong with using DOVBS if they insist on metering data connections. -Clint