3Com Courier, Reference

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G
LOSSARY
5
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.
data communication
equipment (DCE)
In this manual, the term applies to modems that establish and control
the data link via the telephone network
data mode 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.
data set Another way of saying "modem.
data terminal
equipment (DTE)
The device that generates or is the final destination of data.
DCE See data communication equipment.
default Any setting assumed, at startup or reset, by the computer's software
and attached devices, and operational until changed by the user.
digital loopbac 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.
digital signals Discrete, uniform signals. In this manual, the term refers to the binary
digits 0 and 1.
DIP switch
DIP stands for dual in-line package.
DSR See data set ready
DTE See Data Terminal Equipment.
DTMF security A form of dial-up security.
duplex Indicates a communications channel capable of carrying signals in both
directions. See Half Duplex, Full Duplex.
echo
See local echo
EIA Electronic Industries Association, which defines electronic standards in
the U.S.