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LOSSARY
LOSSARY
LOSSARY
LOSSARY
42
digital loopback
A test that checks the modem's RS-232
interface and the cable that connects the
terminal (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
Signals that are discrete and uniform. In
this manual, the term refers to the binary
digits 0 and 1. These signals are in contrast
with analog signals.
DTE
Data Terminal (or Terminating)
Equipment is a computer that generates or
is the final destination of data.
duplex
Duplex indicates a communications channel
capable of carrying signals in both
directions. See half duplex, full duplex.
Electronic Industries Association (EIA)
This association is a group which defines
electronic standards in the U.S.
error control
A variety of techniques that check the
reliability of characters (parity) or blocks
of data. V.42 and MNP error-control
protocols use error detection (CRC) and
retransmission of flawed frames (ARQ).
facsimile
A method for transmitting the image on a
page from one point to another. This is
commonly referred to as fax.
