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Glossary
H
handshaking
The exchange of predetermined codes and signals (tones) to
establish a connection between two modems. The handshaking
process occurs when the two modems connect, and then spend
a brief period deciding how they will transfer data, the speed of
the transfer, and if error control will be used. This is usually
identified by the high-pitched tones emitted by your modem.
I
idle state
A state in which the modem's configuration options can be
modified or commands can be issued to the modem using
AT commands.
L
loopback test
Any test that verifies the integrity of a device by sending data
from one device to another, and then checking the received data
for errors. Various loopback tests can be used to isolate a
problem to the computer, modem, or telephone line.
GL-6
Issue 1 November 1994
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