Glossary
GL-7
Issue 2 May 1995
N
nonvolatile
This term describes memory which does not lose its contents
when the device is powered down. Modem options are saved in
nonvolatile memory when you use the &W command.
O
off-hook
A telephone or modem is being used.
on-hook
A telephone or modem is not being used.
P
parity
A way of checking data accuracy by counting the number of bits
that have a value of one.
PBX
Telephone switching equipment (Private Branch Exchange)
dedicated to one customer. A PBX connects private telephones
to each other and to the public dial network.
PCMCIA
Personal Computer Memory Card International Association. The
organization which defines the standard for the physical and
operational characteristics of a ‘‘credit card” device.
protocol
The rules for timing, format, error control, and flow control during
data transmission.
