3Com Courier Reference page 195

data communication
equipment (DCE)
data mode
data set
data terminal
equipment (DTE)
DCE
default
digital loopbac
digital signals
DIP switch
DSR
DTE
DTMF security
duplex
echo
EIA
If a destructive Break is sent during a call (see the &Y command),
causing the modems to reset the compression tables, you can expect
diminished throughput.
In this manual, the term applies to modems that establish and control
the data link via the telephone network
The mode in which the fax modem is capable of sending and receiving
data files. A standard modem without fax capabilities is always in Data
mode.
Another way of saying "modem.
The device that generates or is the final destination of data.
See data communication equipment.
Any setting assumed, at startup or reset, by the computer's software
and attached devices, and operational until changed by the user.
A test that checks the modem's EIA-232 interface and the cable that
connects the terminal or computer and the modem. The mode
receives data (in the form of digital signals) from the computer or
terminal, and immediately returns the data to the screen for
verification.
Discrete, uniform signals. In this manual, the term refers to the binary
digits 0 and 1.
DIP stands for dual in-line package.
See data set ready
See Data Terminal Equipment.
A form of dial-up security.
Indicates a communications channel capable of carrying signals in both
directions. See Half Duplex, Full Duplex.
See local echo
Electronic Industries Association, which defines electronic standards in
the U.S.
G 5
LOSSARY