Science Fair Project Encyclopedia
V.42bis
V.42bis is an adaptive data compression standard in common use nowadays. It is implemented by the MODEM to reduce the amount of sent data modulated (modulation and bandwidth being the bottleneck in today's dial-up connections). It uses an adaptive Huffman tree and a dictionary buffer (if I'm not mistaken) and may go to "transparent mode" in which data is transmitted uncompressed. This protocol also conveys MODEM commands.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details