Theory of Operation

SYSTEM ARCHITECTURE

The MERLIN II system architecture provides a digital network that supports voice and data communications. The modular nature of the system makes the base configuration efficient and easy to expand. The control unit contains the memory for the system’s features, Input/Output (I/O) functions, and interface requirements. The various modules are electrically connected to a backplane assembly that provides common circuitry for the I/O bus, Time Division Multiplex (TDM) bus, and power distribution. Refer to Figure 1-9for a fictional block diagram of MERLIN II system architecture. System architecture is made up of the following items: a Processor Module interconnected to intelligent port modules by an I/O bus; a communications network made up of a TDM bus connected to the DigitaI Switch Element (DSE) of each module; and a Power Supply Module.

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AT&T 518-600-016 manual Theory of Operation
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