US Robotics COURIER Manuale Utente Scaricare il pdf (Pagina 272)

100

101

U.S. Robotics I-modem Command Reference

Glossary • Page G-14

high-speed modems, the receiving modem accepts no more data until a defective block is

received correctly.

data B-channel

The I-modem distinguishes between the data B-channel and the analog device B-channel.

All I-modems need a CSV/D B-channel over which to pass V

.120, fax/modem, and,

optionally, V

.110 data.

data communications

A type of communications in which computers and terminals are able to exchange data

over an electronic medium.

data compression

When the transmitting modem detects redundant units of data, it recodes them into shorter

units of fewer bits. The receiving modem then decompresses the redundant data units

before passing them to the receiving computer.

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