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Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!think.com!cayman!stemwinder.FCR.COM!stemwinder!brad From: brad@FCR.COM (Brad Parker) Newsgroups: comp.os.386bsd.bugs Subject: Re: Problems with patchkit 0.2.4 Date: 12 Aug 93 10:27:28 Organization: FCR Software Inc., Boston, MA Lines: 36 Message-ID: <BRAD.93Aug12102728@stemwinder.FCR.COM> References: <BLYMN.93Jul28182459@siren.awadi.com.au> <1993Jul29.032615.9906@fcom.cc.utah.edu> <23pa4i$47b@cleese.apana.org.au> <1993Aug9.214631.18873@fcom.cc.utah.edu> NNTP-Posting-Host: stemwinder.fcr.com In-reply-to: terry@cs.weber.edu's message of Mon, 9 Aug 93 21:46:31 GMT In article <1993Aug9.214631.18873@fcom.cc.utah.edu> terry@cs.weber.edu (A Wizard of Earth C) writes: In article <23pa4i$47b@cleese.apana.org.au> newton@cleese.apana.org.au (Mark Newton) writes: >In article <1993Jul29.032615.9906@fcom.cc.utah.edu> terry@cs.weber.edu (A Wizard of Earth C) writes: [ ... discussion of MNP ... ] >>Ask yourself "What standard do they use in v.32-BIS and v.42-BIS modems to >>do their compressing?". This statement actually becomes kinda funny. > >Bzzzt! > >v.42 uses LAP-M for error correction; v.42bis uses BTLZ in conjunction >with LAP-M for compression. > >Neither of them make use of MNPx. > >MNP protocols are proprietry, so they're hardly the correct choice as >a CCITT v.* standard, eh? Re-Bzzzt! The MNP protocol has been reimplemented by multiple vendors. It is the specific implementation which is propritary. By my read of the CCITT V.42 spec, the "alternate proceedure" in Annex A is exactly MNP-4. It is entirely possible (since I do it every day) to run V.42bis over MNP-4. MNP-4 provides the same functionality as LAP-M. (i.e. sequenced reliable delivery with flow control) -brad -- Politically correct term for `corrupt': Ethically different, morally challenged Brad Parker FCR Software, Inc., Boston, Ma. brad@fcr.com