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Chapter 4. THEORY OF
OPERATION
This chapter contains the theory of operation information for the Monitor and Control
(M&C) section, modulator, demodulator, decoder, overhead interface, backward alarm
information.
4.1
Monitor and Control (M&C)
The M&C monitors the modem and provides configuration updates to other modems
within the modem when necessary.
The modem configuration parameters are maintained in battery-backed RAM, which
provides total recovery after power-down situation.
The M&C functions include extensive fault and status reporting.
All modem functions are accessible through a local front panel interface and a remote
communications interface.
A block diagram of the M&C is shown in Figure 4-1.
4–1
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