3Com 3C900B Installation And Operating Instructions Manual page 110

data mode
Mode used by a modem when sending and receiving data
files.
DCE
Data Communications (or Circuit-Terminating)
Equipment, such as dial-up modems that establish and
control the data link via the telephone network.
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.
dictionary
The term used for compression codes built by the
data compression algorithm.
106
G
LOSSARY
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
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
V.42 bis
digital
half duplex, full duplex.