User`s guide

User’s Guide 35
Section C : Glossary
Cross references are printed in boldface. Cross references with
items in the Command Summary, found in Section D: Technical
Quick Reference, are printed in italics.
analogue loopback
A modem self-test in which data from the keyboard or an internal test
pattern is sent to the modem's transmitter, turned into analogue form,
looped back to the receiver, and converted back into digital form.
analogue signals
A variety of signals and wavelengths that can be transmitted over
communications lines such as the sound of a voice over the phone line.
Contrast with digital signals.
answer mode
The mode used by your modem when answering an incoming call from
an originating modem. The transmit/receive frequencies are the reverse
of the originating modem, which is in originate mode.
application
A computer program designed to perform a specific function, such as a
word processing or organizing data into a spreadsheet.
ARQ
Automatic Repeat reQuest. A general term for a function that
automatically allows your modem to detect flawed data and retransmit
it. See MNP and V.42.
ASCII
American Standard Code for Information Interchange. A code used to
represent letters, numbers, and special characters, such as $, !, and /.
asynchronous transmission
Data transmission in which the length of time between transmitted
characters may vary. Because the time lapses between transmitted
characters are not uniform, the receiving modem must be signaled as