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error detection (CRC) and retransmission
of flawed frames (ARQ).
Facsimile
Facsimile
A method for transmitting the image on a
page from one point to another. Commonly
referred to as fax.
Fax Mode
Fax Mode
The mode in which the fax modem is
capable of sending and receiving files in a
facsimile format. See definitions for v.17,
v.27ter, and v.29.
Flow Control
Flow Control
A mechanism that compensates for
differences in the flow of data input to and
output from a modem or other device. See
commands &Hn, &In, and &Rn.
Frame
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
Full Duplex
Signal flow in both directions at the same
time. In microcomputer communications,
may refer to the suppression of the online
Local Echo.
Half Duplex
Half Duplex
Signal flow in both directions, but only one
way at a time. In microcomputer
communications, may refer to activation of
the online Local Echo, which causes the
modem to send a copy of the transmitted
data to the screen of the sending computer.
