Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!pacbell.com!ucsd!nosc!crash!orbit!zuhause!bruce From: bruce@zuhause.MN.ORG (Bruce Albrecht) Newsgroups: comp.sys.amiga.datacomm Subject: Re: A 9600 baud modem for $169!!! Message-ID: Date: 22 Jun 91 15:13:06 GMT References: <29138@know.pws.bull.com> <9149@ucdavis.ucdavis.edu> <9154@ucdavis.ucdavis.edu> Organization: Society to Stamp Out Bogus Organizations Lines: 21 >full-duplex 9600 bps is just about the dumbest thing I ever heard of. >Anyone who NEEDS to send AND receive at full speed (as opposed to >1 9600 bps and 1 450 bps channel) please respond. I'd be glad to hear >what all that extra technology is being used for. If UUCP and other communications programs where smart enough, you'd be sending data both directions at 9600 baud, and include packet acknowledgements as part the packet headers. Actually, since V.32 modems set to synchronous mode, they can be used with X.25 to do exactly that. Tymnet (now BT Tymnet) developed a protocol based on X.25 called X.PC around 1983 which allows up to 15 independent channels over a serial line. If people supported this for BBSs, you'd be able to upload, download, and read mail simulatneously with only a slight amount of overhead. Although most traffic seems to be one-way, I'm sure people would be willing to change if something like X.PC became widely used. -- bruce@zuhause.mn.org