Lucent Technologies MERLIN LEGEND Release 6.0 System Programming Manual page 1088

MERLIN LEGEND Communications System Release 6.0
System Programming 555-660-111
Glossary
power supply
module
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
public switched
telephone network
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.
(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.
See PSTN.
Issue 1
February 1998
Page GL-22