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- Path: 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
-
- 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
-
-