V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MNP
       Microcom Networking Protocol


The Free On-line Dictionary of Computing (30 December 2018):

Microcom Networking Protocol
MNP

   (MNP) One of the most common modem protocols with
   compression.  Also the name of a product.

   [Details?  On-line spec?]

   (1995-01-31)