Information on Microcom Networking Protocols Class 7
Microcom Networking Protocols Class 7·is one of the error correction
and data compression protocols developed by the modem manufacturer Microcom.
Class 7 provide ·enhanced data compression protocol that
can increase throughput by up to 300%.
Microcom Networking Protocols Class 7 compression uses an advanced form of Huffman encoding in
conjunction with a predictive Markhov algorithm to represent user data
in the shortest possible Huffman codes. To encode a character,
the compressor selects a code that depends on the immediately
preceding character (for example, q followed by a u).
technique is called Enhanced Data Compression, which has all the
characteristics of Class 5 compression, but in addition, predicts the
probability of repetitive characters in the data stream.
Class 7 compression,
on average, reduces data by 42%.
In addition to Class 5
and Class 7 data compression, modern implementation of MNP supports
the ITU V.42bis data compression standard.
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