ATO V.9256K MNP and, Error-correctionoverview, MNP error correction

Chapter 7

MNP and V.42

The internal modem has built-in protocols MNP (Microcom Networking Protocol) Class 4 and V.42 for error correction and MNP class 5 and V.42bis for data compression.

Error-correction overview

Telephone line noise, or electrical interference, can cause errors in data communication. Noise is especially a problem at high speeds of 14,400 bps or greater.

The MNP and V.42 protocols were developed to ensure reliable data communications despite the high probability of error generation from line noise.

MNP error correction

MNP was developed by Microcom. MNP class 4 enables data correction of full-duplex communications and also provides asynchronous/synchronous conversion and data packet-size negotiation to increase throughput.

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