3Com 56k User's Manual And Reference page 40

dictionary
The term used for compression codes built by the
V.42 bis data compression algorithm.
digital loopback
A test that checks the modem's RS-232 interface
and the cable that connects the terminal
(computer) and the modem. The modem receives
data (in the form of digital signals) from the
computer or terminal, and immediately returns the
data to the screen for verification.
digital signals
Signals that are discrete and uniform. In this
manual, the term refers to the binary digits 0 and
1. These signals are in contrast with analogue
signals.
DTE
Data Terminal (or Terminating) Equipment is a
computer that generates or is the final destination
of data.
36
Glossary
duplex
Duplex indicates a communications channel
capable of carrying signals in both directions. See
half duplex, full duplex.
Electronic Industries Association (EIA)
This association is a group which defines
electronic standards in the U.S.
error control
A variety of techniques that check the reliability of
characters (parity) or blocks of data. V.42 and
MNP error-control protocols use error detection
(CRC) and retransmission of flawed frames
(ARQ).
facsimile
A method for transmitting the image on a page
from one point to another. This is commonly
referred to as fax.