US Robotics COURIER - Page 190

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COURIER HIGH SPEED MODEMS
Data Mode
OGE
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 Communication (or Circuit-Terminating) Equipment. In
this manual, the term applies to dial-up modems that establish
and control the data link via the telephone network.
Dedicated Line
A user-installed telephone line used to connect a specified num-
ber of computers or terminals within a limited area, for example,
one building. The line is a cable rather than a public-access tele-
phone line. The communications channel may also be referred
to as nonswitched because calls do not go through telephone
company switching equipment.
Default
Any setting assumed, at startup or reset, by the computer's soft-
ware and attached devices, and operational until changed by the
user.
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
DTE
Discrete, uniform signals. In this manual, the term refers to the
binary digits 0 and 1.
Data Terminal (or Terminating) Equipment. The device that
generates or is the final destination of data. In this manual, the
term refers to your computer.
Duplex
Indicates a communications channel capable of carrying signals
in both directions. See Half Duplex, Full Duplex.
Glossary G-5