Comtech EF Data SMS-458B - Manual (Page 61)

4–1
Chapter 4. THEORY OF
OPERATION
This chapter describes switch theory of operation.
4.1 Monitor and Control
4.1.1 General
A sophisticated microcontroller performs the monitor and control functions of the switch.
The module, called the Monitor and Control (M&C), plugs into slot 5 of the switch
chassis, and is shown in Figure 4-1.
The M&C monitors the switch configuration and updates other modules within the switch
as required. Switch configuration parameters are stored in battery-backed RAM to
provide total recovery after a power-down. The switch gathers status and provides
extensive fault monitoring. A local front panel interface and a remote communications
interface provide user access to all switch functions.