MNP Class 4 : Java Glossary


MNP Class 4
Here the modems improve on class 3 by adapting the size of the packets exchanged to suit the cleanliness of the line and the burstiness of the traffic. The cleaner the line, the bigger the packets. The protocol efficiency is about 120% on a clean line. A 2400 BPS (Bits Per Second) modem will realise a throughput of about 2900 BPS. Tymnet/BIX uses MNP (Microcom Network Protocol) level 4. MNP-4 is the alternate error correcting protocol in CCITT (Comité Consultatif International Téléphonique et Télégraphique) V.42.

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