System Hardware; Merlin Ii System Components; Control Unit Components - AT&T Merlin II Installation And Maintenance Manual

System Hardware

MERLIN II SYSTEM
COMPONENTS
CONTROL UNIT
COMPONENTS
1-18 System Hardware
The MERLIN II system includes the following hardware:
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:
Basic carrier.
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.
slots for an additional Power Supply Module and six
line and/or station modules. The expansion carrier
does not require a Processor Module.
The basic carrier is the main housing
The expansion carrier provides