US Robotics COURIER Uživatelský manuál stáhnout pdf (Strana 277)

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U.S. Robotics I-modem Command Reference

Glossary • Page G-19

equalization

A compensation circuit designed into modems to counteract certain distortions introduced

by the telephone channel. Two types are used: Þxed (compromise) equalizers and those

that adapt to channel conditions. U.S. Robotics high-speed modems use adaptive equaliza-

tion.

error control

Various techniques which check the reliability of characters (parity) or blocks of data.

V.42, MNP, and HST error-control protocols use error detection (CRC) and retransmission

of errored frames (ARQ).

expansion bus

A series of slots inside a computer that allow for adding feature cards.

facsimile (fax)

A method for transmitting the image on a printed page from one point to another.

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