US Robotics 005689-03 Manual page 26

devices, and operational until changed by
the user or software.
Detect Phase Detect Phase
In the ITU-T V.42 error-control protocol,
the first stage in establishing whether both
modems attempting to connect have V.42
capability.
Dictionary Dictionary
The term used for compression codes built
by the V.42 bis data compression algorithm.
Digital Loopback 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 Digital Signals
Discrete, uniform signals. In this manual,
the term refers to the binary digits 0 and 1.
Contrast with analog signals.
DTE DTE
Data Terminal (or Terminating) Equipment.
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.
EIA EIA
Electronic Industries Association, which
defines electronic standards in the U.S.
Error Control Error Control
Various techniques that check the reliability
of characters (parity) or blocks of data.
V.42 and MNP error-control protocols use
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