MERLIN LEGEND Communications System Release 7.0
System Programming
555-670-111
Issue 1
April 1999
Glossary
GL-22
P
Parity
Addition of a
bit
to a bit string so that the total number of
ones is odd or even; used to detect and correct
transmission errors.
PassageWay
Direct Connection
Solution
Set of software applications that provides an interface
between a personal computer and an MLX telephone.
PBX
Private Branch Exchange
. Local electronic telephone
switch that serves local stations (for example, extensions
within a business) and provides them with access to the
public network.
PC
Personal Computer
.
PCMCIA Memory
Card
Personal Computer Memory Card International Association
Memory Card
.
Peripheral System
In a
private network
, system that does not connect to more
than one other system, sometimes called an “end node.”
Personal Line
Central office
line/trunk that terminates directly at one or
more extensions. In
Hybrid/PBX mode
, a personal line
cannot be part of a line/trunk
pool
. Also called “DFT” (Direct
Facility Termination).
PFT
Power Failure Transfer
. Feature that provides continuity of
telephone service during a commercial power failure by
switching some of the system’s line/trunk connections to
telephones connected to specially designated extension
jacks.
Phantom
Extension
Extension that is not actually plugged into the system, but
is used, for example, as a calling group member covered
by a
voice messaging system
.
Pool
In
Hybrid/PBX mode
, a group of outside lines/trunks that
users can access with a Pool button or by dialing an access
code on an SA
button
. Also used by the
ARS
feature when
choosing the least expensive route for a call.
Point-to-Point
Facility
In a
private network,
a line/trunk that passes through the
PSTN
without using the switching capabilities of the PSTN.
Port
See
. Also, refers to
extension
or
line/trunk jacks
before these are numbered according to the
dial plan
during programming. The lowest jack on a module is
always Port 1.
Power Failure
Transfer
See
.
Power Supply
Module
Device that directs electricity to modules and telephones on
the system. One power supply module is needed for each
carrier, and an
auxiliary power unit
is added, if needed.
