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Control Unit
DESCRIPTION
Modules
The basic carrier contains slots for up to seven modules, which supply power,
direct system operation, and provide jack connections for telephone lines,
voice terminals, and other equipment, such as a tape player for the Music-
on-Hold feature. See Figure 2-19. You can also add to your system one
expansion carrier which provides more power and additional connections for
lines and equipment.
Your MERLIN II system may include up to 56 outside
lines and as many as 88 connections for voice terminals or other equipment,
depending on the combination of modules installed. However, you can have
only 82 responding stations.
FIGURE 2-19 The MERLIN II system control unit with installed modules.
The following modules are used in the MERLIN II system:
● Power Supply Module.
A Power Supply Module, which supplies power
to the other modules in the unit, always occupies the leftmost slot on the
basic carrier and the expansion carrier.
There is an Off/On switch at the
bottom of the module. When the power is on, a green light is on next to
the switch.
Accessory Equipment
2-175