G
LOSSARY
7-3
default
Any setting assumed, at startup or reset, by the computer's software and
attached devices. The computer or software will use these settings until
changed by the user or other software.
detect phase
In the
ITU-T
V.42 error-control
protocol
, the first stage in establishing if
both modems attempting to connect have
V.42
capability.
digital loopback
A test that checks the modem's RS-232 interface and the cable that
connects the
terminal
or 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
Discrete, uniform signals. In this manual, the term refers to the
binary
digits
0 and 1.
DTE
Data
Terminal
(or Terminating) Equipment. A computer that generates or
is the final destination of data.
duplex
Indicates a communications channel capable of carrying signals in both
directions. See
half duplex
,
full duplex
.
Electronic Industries Association (EIA)
Group which defines electronic standards in the U.S.
error control
Various 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
).
Summary of Contents for 3CP5613
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