Article View: comp.os.linux.networking
Article #50Re: 28.8 modem x 2 = 57.6k????
From: bill davidsen
Date: Thu, 18 Jan 1996 23:23
Date: Thu, 18 Jan 1996 23:23
19 lines
1322 bytes
1322 bytes
In article <4djuqb$rk3@hermes.oc.com>, Dimitri Prado <dprado@fastlane.com.br> wrote: | a 56K line is sync while your 2 x 28K is async plus I would think you | get twice the protocol overhead on a twin slip line (not sure about | this last statement). Nope. 28.8k is the speed between modems. Using V.42 error correction the link is run sync with some slight overhead. Figure 8.3 bits/byte as a rule of thumb. As long as the DTE is run at a high speed with flow control, say 38.4k or faster, no problem getting 3450 cps out of the DTE end. And no, overhead for dual modem connections is about the same as single, since it's per packet and the number of packets doesn't change. -- -bill davidsen (davidsen@tmr.com) "Anarchy does not scale well." -Dave Welch
Technical Details
Message-ID:
<4dmkp8$fds@usenety1.news.prodigy.com>Path:
arc1-ca.pugleaf.net!darkstar.prodigy.com!davidsenReferences:
<Pine.LNX.3.91.960110125731.6629A-100000@mike.netrom.com> <4dc0gi$2f8@iii2.iii.net> <4dgdck$22t@saturn.tlug.org> <4djuqb$rk3@hermes.oc.com>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!darkstar.prodigy.com!davidsen From: davidsen@tmr.com (bill davidsen) Newsgroups: comp.os.linux.networking,comp.dcom.modems Subject: Re: 28.8 modem x 2 = 57.6k???? Date: 18 Jan 1996 23:23:20 GMT Organization: TMR Associates, Schenectady NY Message-ID: <4dmkp8$fds@usenety1.news.prodigy.com> References: <Pine.LNX.3.91.960110125731.6629A-100000@mike.netrom.com> <4dc0gi$2f8@iii2.iii.net> <4dgdck$22t@saturn.tlug.org> <4djuqb$rk3@hermes.oc.com> NNTP-Posting-Host: darkstar.prodigy.com Originator: davidsen@darkstar.prodigy.com