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- Path: sparky!uunet!destroyer!sol.ctr.columbia.edu!usc!chaph.usc.edu!news
- From: baffoni@aludra.usc.edu (Juxtaposer)
- Newsgroups: comp.sys.atari.st
- Subject: Re: V22. V32....?????
- Date: 30 Aug 1992 08:36:29 -0700
- Organization: University of Southern California, Los Angeles, CA
- Lines: 41
- Message-ID: <la1qntINNpn2@aludra.usc.edu>
- References: <1992Aug28.214925.3165@actrix.gen.nz>
- NNTP-Posting-Host: aludra.usc.edu
-
- In article <1992Aug28.214925.3165@actrix.gen.nz> Steven.Wells@bbs.actrix.gen.nz writes:
-
- >Could someone tell me what all the diferent 'v' protocols and the MNP
- >protocols on modems do?
- >V22, V32, V32bis, V42 etc. and MNP 1 to 10 (if available)
- >there are other V-protocols, like another 'bis' type (what does that
- >stand for!?)
-
- Bell 103:300bps standard, promoted by (guess who) the old monopolistic
- Bell corp.
- Bell 212A:1200 bps standard, promoted by Bell
-
- V.21: 300 bps standard promoted by CCITT (forget what it stands for)
- V.22: 1200 bps standard (CCITT).
- V.22bis: 2400 bps standard (CCITT)
- V.32: 9600 bps standard (CCITT)
- V.32bis: 12k-14.4k bps standard (CCITT)
- V.42: This is a protocol for error detection(correction?).
- V.42bis: This is a protocol for error detection AND compression (real-
- world results should be around 4X compression on uncompressed
- data).
-
- MNP1-3: No idea. These are standards promoted by Microcom (Microcom
- Network Protocols). I would imagine MNP1-3 are equivalents
- (BUT DIFFERENT) of V.21-V.22bis.
- MNP4: This is a protocol for error detection(correction?).
- MNP5: This is the Microcom protocol for compressed communications. Real
- World results are about 2X compression for uncompressed data.
- MNP10: This is a standard for communicating over Cellular lines.
-
- Well, I know I missed some V.[something]ter in the V series, but I
- don't remember which ones, let alone what they are for (well, one is probably
- for cellular comm.).
-
- Hope that helps!
-
- > Wells_S@Kosmos.WCC.Govt.NZ / Steven.Wells@BBS.Actrix.Gen.NZ
- > $$$$$$$$ Nil Mortifi Sine Lucre $$$$$$$$
-
- -Mike
-
-