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fax mode
The mode in which the faxmodem is capable of
sending and receiving files in a facsimile
format. See definitions for V.17, V.27ter,
V.29.
flow control
A mechanism that compensates for differences
in the flow of data into and out of a modem or
other device. See commands &Hn, &In, &Rn.
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.
80
G
LOSSARY
full duplex
Capable of signal flow in both directions
simultaneously. In microcomputer
communications, may refer to the suppression
of the online local echo.
half duplex
Capable of signal flow in both directions, but
signals may flow 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.
Hz
Hertz, a frequency measurement unit used
internationally to indicate one cycle per
second.
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