Glossary-24
NULL password
A password
configured
for no password. A password can be deleted by
configuring a NULL password.
offhook
A line condition caused when a telephone handset is removed from its cradle,
if the line is active.
onhook
A line condition that exists when a telephone handset is resting in its cradle,
if the line is active.
OPX, offpremises extension
In industry usage, an offpremise telephone extension. As related to
MICOM's domestic and international voice/fax modules, a strapping option
for compatibility with the station side of a voice PBX. In the Universal Voice
Module, the interface is called FXO.
pad character
A character inserted to fill a blank time slot in a synchronous transmission or
to fulfill a character count requirement in a transmission of fixed block
length. In Integration units, leading pad characters help establish
synchronization, and trailing pad characters prevent the dropping of the
RLSD/RTS signal too soon after the end of a frame.
parameter
An element, the value of which characterizes the behavior of one or more
variables associated with a given system.
parity, parity bit
A bit added to a character to ensure that the total number of 1s in a grouping
of bits is either always even for even parity, or odd for odd parity. This
permits detection of signal errors.
Part 15, FCC
A part of the FCC body of rules that defines the restrictions to the level of
electromagnetic emissions for an electronic device.
Part 68, FCC
A part of the FCC body of rules that defines the technical requirements that
an electronic device must meet before it can be connected to the telephone
network.