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V.42bis supports data compression during data transmission. The compression works with a variant of the LZW algorithm: LZBT algorithm, Lempel-Ziv British Telecom.

Compression with MNP5 and V.42bis

Compression with MNP5 and V.42bis

V.42bis is an effective method for data compression, specified for asynchronous data transmission with the modem; in most applications it is combined with V.42 error protection. Depending on the data structure, compression factors up to 3 are possible.

In addition, V.42bis offers Adverse Channel Enhancement( ACE) for transmission optimization and compensation of noisy transmission lines.

Englisch: V.42bis
Updated at: 10.06.2007
#Words: 83
Links: data, compression, data transmission, Lempel, Ziv, Welsh (LZW), algorithm
Translations: DE

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