US Robotics COURIER User Manual page 191

COURIER HIGH SPEED MODEMS
-
-
EIA
Electronic Industries Association, which defines electronic stan-
dards in the U.S. -
Equalization
A compensation circuit designed into modems to counteract
certain distortions introduced by the telephone channel. Two
types are used: fixed (compromise) equalizers and those that
adapt to channel conditions. USRobotics high speed modems
use adaptive equalization.
Error Control
Various techniques which check the reliability of characters
(parity) or blocks of data. V.42, MNP and HST error control
protocols use error detection (CRC) and retransmission of
errored frames (ARQ).
Facsimile
A method for transmitting the image on a printed page from one
point to another. Commonly referred to as Fax.
Fax Mode
The mode in which the fax modem is capable of sending and
receiving files in a facsimile format.
Flow Control
A mechanism that compensates for differences in the flow of
data input to and output from a modem or other device.
Frame
A data communications term for a block of data with header and
trailer information attached. The added information usually
includes a frame number, block size data, error-check codes, and
Start/End indicators.
Full Duplex
Signal flow in both directions at the same time. In micro-
computer communications, may refer to the suppression of the
online Local Echo.
G-6 Glossary
-
-
-
-
-
-
-
-
-
-
-
-
-
-