Lucent Technologies MERLIN LEGEND Release 6.0 Maintenance And Troubleshooting Manual page 472

MERLIN LEGEND Communications System Release 6.0
Maintenance and Troubleshooting 555-660-140
Glossary
PRI
primary system
operator position
prime line
private
communications
network or private
network
private network
trunks
processor module
programming port
reassignment
protocol
PSTN
PSTN trunk
(Primary Rate Interface) Standard interface that specifies
the protocol used between two or more communications
systems. As used in North America, it provides
twenty-three 64-kbps B-channels for voice and/or data
and one 16-kbps D-channel , which carries multiplexed
signaling information for the other 23 channels.
First jack on the first MLX or analog multiline extension
module in the control unit, that is, the extension jack with
the lowest logical ID in the system.
Individual extension number assigned to a telephone in a
system operating in Behind Switch mode . Each
telephone user has his or her own prime line and is
automatically connected to that line when he or she lifts
the handset.
An interconnected group of communications systems ,
which may consist of MERLIN LEGEND Communications
Systems, DEFINITY Enterprise Communications Servers
(ECS), and/or DEFINITY ProLogix Solutions.
The facilities that connect communications systems in a
private network . See also tandem tie trunks and tandem
PRI trunks .
Module in the second slot of the control unit (Slot 0, to the
right of the power supply module ). Includes the software
and memory that runs the system.
Reassignment of the system programming jack position to
any of the first five extension jacks on the first MLX
module in the control unit.
Set of conventions governing the format and timing of
message exchanges between devices, such as an MLX
telephone and the control unit.
Network that is commonly accessible for local or
long-distance calling. Also called "public network" or
"public switched network."
In a private network , a facility that connects a networked
system to the public switched telephone network.
Issue 1
February 1998
Page GL-30