Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!uunet!overload!dillon From: dillon@overload.Berkeley.CA.US (Matthew Dillon) Newsgroups: comp.sys.amiga.datacomm Subject: Re: 19200bps Message-ID: Date: 6 May 91 20:39:36 GMT References: <1991May5.185645.12902@cunixf.cc.columbia.edu> <1991May5.201708.452@cec1.wustl.edu> Organization: Not an Organization Lines: 24 In article <1991May5.201708.452@cec1.wustl.edu> amc4919@cec2.wustl.edu (Adam M. Costello) writes: >Would anyone care to speculate how long it will be before we see modems with >19200 bps physical data rates? I assume it's being worked on. Are there any >rumors floating around? >AMC A normal phone line has a bandwidth of around 38KBaud. As any RF/electrical engineer will tell you, it's nearly impossible to utilize all the available bandwidth of a medium. It's hard enough to utilize half of it, which is what 9600bps (V.32) modems do now (9600bps full duplex = 19.2KB bandwidth). The best you will ever see on a phone line is probably around 19.2KB uncompressed. Now, on leased lines or dedicated direct connects you can get a hellofalot better throughput. -Matt -- Matthew Dillon dillon@Overload.Berkeley.CA.US 891 Regal Rd. uunet.uu.net!overload!dillon Berkeley, Ca. 94708 USA