Apple Express Fax/Modem User Manual
Page 173
J
jack
A socket used for a telephone line or other electrical connections.
jaggies
Jagged character borders that occur when viewing on-screen
bitmapped fonts. Characters are composed of separate pixels.
L
local echo
A method of communication in which your modem or software
displays data “locally” on your screen, without relying on the host computer
to echo the characters back.
log off
To type a command to the host computer that terminates the
communications session.
log on
To enter a series of responses to prompts by the host computer to
identify yourself, your password, sometimes your terminal, and so forth, to
start a communications session.
M
mainframe computer
A large computer whose speed and storage capacity allow
it to handle huge amounts of data and work with many terminals.
millisecond
One thousandth of a second; abbreviated ms.
MNP
An abbreviation for Microcom Networking Protocol. MNP Classes 2–4
are error control protocols. MNP Class 5 is a data compression protocol.
modem
A device for converting serial information into tones that can be
transmitted over telephone lines. The tones are modulated (changed in pitch)
to represent the information; modem stands for “modulator/demodulator”.
modulate
To modify or alter a signal to transmit information; for example,
conventional broadcast radio transmits sound by modulating the amplitude
(amplitude modulation, or AM) or the frequency (frequency modulation, or
FM) of a carrier signal.
161
G
L O S S A R Y