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local area network (LAN)
local area network (LAN)
logical link
loop-start trunk
LSU
LWC
MAC
MADU
main distribution frame
(MDF)
main-satellite-tributary
maintenance
management terminal
major alarm
Manual-In work mode
MAP
414 Communication Manager Guide to ACD Call Centers
A networking arrangement designed for a limited geographical area. Generally, a
LAN is limited in range to a maximum of 6.2 miles and provides high-speed carrier
service with low error rates. Common configurations include daisy chain, star
(including circuit-switched), ring, and bus.
The communications path between a processor and a BRI terminal.
A trunk on which, after establishing a connection with a distant switching system for
an outgoing call, the system waits for a signal on the loop formed by the trunk leads
before sending the digits of the called number.
Local storage unit
Leave Word Calling
Medium access
Modular asynchronous data unit
A device that mounts to the wall inside the system equipment room. The MDF
provides a connection point from outside telephone lines to the PBX switch and to
the inside telephone stations.
A private network configuration that can either stand alone or access an ETN. A
main switch provides interconnection, via tie trunks, with one or more subtending
switches, called satellites; all attendant positions for the main/satellite configuration;
and access to and from the public network. To a user outside the complex, a
main/satellite configuration appears as one switch, with one listed directory number
(LDN). A tributary switch is connected to the main switch via tie trunks, but has its
own attendant positions and LDN.
Activities involved in keeping a telecommunications system in proper working
condition: the detection and isolation of software and hardware faults, and automatic
and manual recovery from these faults.
The terminal that is used by the system administrator to administer the switch. The
terminal may also be used to access the BCMS feature.
An indication of a failure that has caused critical degradation of service and requires
immediate attention. Major alarms are automatically displayed on LEDs on the
attendant console and maintenance or alarming circuit pack, logged to the alarm log,
and reported to a remote maintenance facility, if applicable.
One of four agent work modes: the mode in which an agent is ready to process
another call manually. See
Maintenance action process
Auto-In Work mode
on page 390 for a contrast.
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