Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!ncrlnk!ncrwat!swdev!dgs From: dgs@swdev.Waterloo.NCR.COM (David G. Schwartz) Newsgroups: comp.sys.ibm.pc Subject: Re: MNP level 5 Summary: Doing it in software Message-ID: <1050@swdev.Waterloo.NCR.COM> Date: 13 Oct 89 17:24:21 GMT References: <10767@phoenix.Princeton.EDU> <25350C7F.8192@maccs.dcss.mcmaster.ca> Reply-To: dgs@swdev.Waterloo.NCR.COM (David G. Schwartz) Organization: NCR Canada Ltd, Waterloo, Ontario, Canada. Lines: 28 Keywords:MNP modems In article <25350C7F.8192@maccs.dcss.mcmaster.ca> cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn) writes: >James Webster Birdsall writes: >$ This went by on the net a few months ago, but I've forgotten. Is MNP >$level 5 simply hardware error-correction or is it also 2:1 compression? > > MNP has five levels. One through four implement various error correction >schemes. Level five incorporates error correction and data compression. Actually MNP has 9 levels (maybe more by now) but that's not the point of this message. I think levels higher than 5 really have to be implemented in the hardware and are only likely to be found in hi-speed, hi-bux modems. > .... [deleted] .... > As for FlashLink, it came with my modem (from Cardinal Technologies >in Lancaster, PA). It implements MNP levels 2, 4 and 5. I also bought this modem but found the software to be virtually useless and have discontinued using it. However, I _would_ like to be able to use the MNP 5. Is a description of the algorithm available? The best of all situations would be for the maintainers of KERMIT to add it to the program and allow you to turn it on and off at will (in case you missed it, this is a broad hint for you guys at Columbia). -- Life is so complicated, if we could just get a look at the source code .... WEST: {hp-sdd,ucsd,nosc.arpa,dcdwest,pyramid}!ncr-sd! EAST: {mcnc!ece-csc,gould,hubcap}!ncrcae!ncrlnk!ncrwat!swdev!dgs NCR: VOICE: (519) 884-1710 x247