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System Hardware
The MERLIN II system includes the following hardware:
MERLIN II SYSTEM
COMPONENTS
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CONTROL UNIT
COMPONENTS
Control unit
Voice terminals
> Analog
> Digital
Basic Touch-Tone
Digital data equipment
Modems
System accessories/auxiliary devices
The assembly of modules containing a power source, a
processor, and jack connections for outside lines, tie lines,
MERLIN II system telephones, and other devices mounted
on a carrier is called the control unit (Figure 1-4). The
individual components are as follows:
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Basic carrier.
The basic carrier is the main housing
for the control unit. Every MERLIN II system must
have at least one basic carrier, which houses the Power
Supply Module, Processor Module, and up to five line
and/or station modules.
● Expansion carrier. The expansion carrier provides
slots for an additional Power Supply Module and six
line and/or station modules. The expansion carrier
does not require a Processor Module.
1-18 System Hardware