User`s guide

GLOSSARY
54
parity
A simple error-detection method that checks the
validity of a transmitted character. Character
checking has been surpassed by more reliable and
efficient forms of error checking, including V.42
and MNP 2-4 protocols. Either the same type of
parity must be used by two communicating
computers, or both may omit parity.
protocol
A system of rules and procedures governing
communications between two or more devices.
Protocols vary, but communicating devices must
follow the same protocol in order to exchange data.
The format of the data, readiness to receive or send,
error detection and error correction are some of
the operations that may be defined in protocols.
RAM
Random Access Memory is memory that is
available for use when the modem is turned on, but
that clears of all information when the power is
turned off. The modem's RAM holds the current
operational settings, a flow control buffer, and a
command buffer.
remote digital loopback
A test that checks the phone link and a remote
modem's transmitter and receiver.
remote echo
A copy of the data received by the remote system,
returned to the sending system, and displayed on
the screen. Remote echoing is a function of the
remote system.
ROM
Read Only Memory is permanent memory, which is
not user-programmable.
serial transmission
The consecutive flow of data in a single channel.
Compare it to parallel transmissions where data
flows simultaneously in multiple channels.