Issue 8.0 July 2002 5-1
5
Control, Transmission, and
Synchronization Interfaces 5
Overview 5
This section describes the FT-2000 OC-48 Lightwave System architecture. The
system control, transmission, and synchronization architecture are described
down to the circuit pack level.
Control 5
The FT-2000 OC-48 Lightwave System has a robust, flexible, three-level system
control architecture that supports all platforms. Figure 5-1 shows the system
control architecture for the FT-2000 OC-48 Add/Drop-Rings Terminal. Figure 5-2
shows the system control architecture for the FT-2000 OC-48 Repeater Bay. The
system control architecture distributes the monitoring and control functions down
to the lowest level where a particular function (for example, switching or timing) is
performed.
At the lowest level of the control hierarchy is the board controller that is located on
each transmission, synchronization, and protection circuit pack. The board
controller consists of a microprocessor and its supporting circuitry. The board
controller is responsible for the real-time intensive monitoring and control
functions of the transmission, timing, and protection switch circuitry on a circuit
pack. It also controls the circuit pack FAULT LED and performs self-maintenance
functions (for example, audit checks and routine diagnostics).
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