Toshiba V.92 User Manual
Page 114
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Glossary
5.375 x 8.375 ver 2.4.0
N
Normal mode: Error correction is not made by MNP or V.42, but
even if serial port speed is different from modem port speed, the
buffers in the modem and its flow control function permit
communication without changing their speeds.
O
on line: A functional state in which a device is ready to receive or
transmit information.
online: Available through the computer. Online may refer to
information on the hard disk, such as online documentation or
online help, or a connection, through a modem, to another
computer or the Internet.
On hook/Off hook: On hook means the “handset is on the
telephone,” and off hook means it is off. The line is disconnected
from the internal modem when the handset is on hook, and
connected to the internal modem when it is off hook.
P
parity: A method in serial communications of making sure that the
information received is the same as the information that was sent.
It consists of adding an error detection bit to a group of data bits,
making the sum of the bits either odd or even. When you’re using
a modem to connect to another computer, you can set parity to
none, odd or even. In general, you should set parity to none,
unless you’re requested to do otherwise.
Private Branch Exchange (PBX): An automatic digital telephone
switching system that enables users within an organization to
place calls to each other without going through the public
telephone network. Users can also place calls to outside numbers.
Do not connect the Toshiba internal modem to a digital PBX
line, or the modem may be damaged.
protocol: A set of rules and conventions that makes it possible to
transfer information between computers. If you’re transmitting a
file, both modems must use the same protocol—just as two
people talking on the telephone must speak the same language to
communicate effectively. Examples of modem protocols are
V.34, V.42, V.90 and V.92.
Public line: A line served by a telephone company to be connected
to an opposite station via the exchange.