G
LOSSARY
97
data mode
The mode used by a faxmodem to send and
receive data.
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 settings assumed, at installation, startup or
reset, by the computer's software and attached
devices. These settings remain in effect 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 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 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.
Contrast with analog signals.