MNP Class 10 and MNP Class 5
D-2 Microcom Networking Protocol
MNP Class 10 and MNP Class 5
Each built-in modem on the DECserver 900MC supports Microcom Networking
Protocol (MNP) Class 10 and MNP Class 5 Data Compression. The modem is
compatible with all Microcom MNP products. Its enhanced MNP service is completely
transparent to the user.
Table D-1 shows the features of MNP Class 10 and MNP Class 5.
Table D-1: MNP Class 10 and MNP Class 5
Class
Features
MNP Class 10
Optimizes performance when operating under poor line
conditions.
Provides compatibility with non-MNP modems.
Improves the initial connection success rate by making
multiple negotiation attempts when configured for auto-
reliable mode.
Uses Dynamic Transmit Level Adjustment to
automatically calculate optimal transmit levels to
compensate for cellular telephone signal distortion.
Allows the user to configure the modem to negotiate the
link at a low speed modulation, then upshift to a higher
speed at the completion of link negotiation.
Improves link performance during adverse channel
conditions by aggressive adaptive packet assembly.
Maximizes throughput by continuously monitoring the line
quality and link performance, and then dynamically
upshifting or downshifting to the optimum modulation
speed.
MNP Class 5
Provides data compression, which, combined with MNP
Class 4, allows throughput of almost twice the connection
speed.
Dynamically adjusts to the type of data being transmitted
for maximum compression efficiency.