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COMSPHERE 3800 Series Modems – Model 3830
Glossary-6 August 1998 3830-A2-GB91-30
error control An algorithm used to correct data transmission
errors.
escape sequence Default setting is +++. This sequence lets you
switch your modem from Data mode to Command
mode.
extended result codes An asynchronous message (in either numbers or
words) that includes VF data rate and error control
information the modem sends to the DTE after
executing or trying to execute a command.
fax modem A modem capable of emulating some features of a
fax machine. Working under the control of fax
software, a fax modem can communicate with a
fax machine or with another fax modem.
fax software A program or system of programs installed on a
computer that allow a fax modem to send and
receive facsimile images.
FCC Federal Communications Commission. Board of
Commissioners that regulates all interstate and
foreign electrical communication systems that
originate from the United States.
full-duplex Simultaneous, two-way communications.
Group III A fax standard that specifies a rate of transmission
of about one page per minute.
half-duplex Two-way data communications allowed in only
one direction at a time.
handshaking The exchange of predetermined codes and signals
(tones) to establish a connection between two
modems.
host A computer attached to a network that shares its
information and devices with the rest of the
network.
HDLC High-Level Data Link Control. A communications
protocol defined by ISO.