Lucent Technologies MERLIN LEGEND Release 6.1 Maintenance And Troubleshooting Manual page 485

MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting 555-661-140
point-to-point
facility
port
Power Failure
Transfer
power supply
module
PRI
primary system
operator position
prime line
private
communications
network or private
network
private network
tandem trunks
In a private network, a line/trunk that passes through the
PSTN without using the switching capabilities of the
PSTN.
See jack . 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.
See PFT .
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 .
Issue 1
August 1998
Page GL-29