unni@ucla-cs.UUCP (02/04/87)
Does anyone know what MMP protocol is? It seems to be something obscure that the Motorola or Micom modems do. Thanx for any info. unni@ucla-cs.edu
davidsen@steinmetz.UUCP (02/06/87)
In article <4163@curly.ucla-cs.UCLA.EDU> unni@CS.UCLA.EDU (Unnikrishnan Warrier) writes: > >Does anyone know what MMP protocol is? It seems to be something obscure that >the Motorola or Micom modems do. Thanx for any info. I suspect that you mean "MNP". If not ignore the rest of this message. MNP is an industry standard method of error detection and correction (EDAC). It is in a number of different standard levels. Level three, used by many modems such as the MultiTech 224e, detects errors and requests resend. Higher levels, such as six, actually embed error correcting info, like Hamming codes, in the data sent. If someone has more info on this please expand on what I just said. -- bill davidsen sixhub \ ihnp4!seismo!rochester!steinmetz -> crdos1!davidsen chinet / ARPA: davidsen%crdos1.uucp@ge-crd.ARPA (or davidsen@ge-crd.ARPA)
joel@gould9.UUCP (02/09/87)
In article <1181@steinmetz.steinmetz.UUCP>, davidsen@steinmetz.steinmetz.UUCP (william E Davidsen) writes: > I suspect that you mean "MNP". If not ignore the rest of this > message. MNP is an industry standard method of error detection > and correction (EDAC). "Industry standard" is a bit generous; it wasn't arrived at in the same way as other standards. MNP is a proprietary protocol of Microcom, intended primarily for hardware and not software. After trying strict licensing for many years (its primarily competitor, X.PC is in the public domain), Microcom decided to sell Levels 1-3 for $100, but 4-6 are (or were) still $2,500 in licensing fee. The competition right now seems to be more MNP vs. no standard than MNP vs. another standard, however. -- Joel West MCI Mail: 282-8879 Western Software Technology, POB 2733, Vista, CA 92083 {cbosgd, ihnp4, pyramid, sdcsvax, ucla-cs} !gould9!joel joel%gould9.uucp@NOSC.ARPA