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MERLIN LEGEND Communications System Release 6.0
System Manager's Guide 555-660-118
3
System Components
Control Unit
System Components
This chapter describes the system's basic hardware. It includes descriptions of
the control unit, MLX telephones, analog multiline telephones, single-line
telephones, system operator consoles, adjuncts and adapters for the system and
telephones, and power-related accessories.
Control Unit
The control unit connects the telephone company's outside trunks to the system's
telephones and adjuncts. It is the heart of the system, managing the traffic within
the system (inside calls) and making telephone company facilities and outside
services available to your company. It includes the following components:
Carriers (up to three)
Processor module (one per system)
Power supply module (one per carrier)
Line/trunk and extension modules (up to 17 total in three carriers)
Cover that protects the unit
Carriers
The carriers in the system are the containers that hold the modules on which the
circuit boards and connections for lines/trunks and extensions (called jacks or
ports ) are located. There can be up to three carriers: one basic carrier and two
expansion carriers.
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Issue 1
February 1998
Page 3-1
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