Tadiran Telecom Coral IPx Office, Руководство по установке и аппаратным средствам, Страница: 268 / 510

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Common Control Cards Coral IPx Office Installation Manual
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The Main Control Processor (MCP) provides RS-232E KB0 programming and
maintenance interface, RS-232 UGW programming and maintenance interface, a
SAU connection, and an IMC8 flash card interface. It integrates the main processor,
memory management circuitry, local bus interface, real-time clock, generic feature
software memory, and database memory.The MCP supervises overall system
operation by executing system-wide processes. These processes include port
connection management, feature management, generic feature software installation,
feature authorization, configuration database management, database backup and
restoration, program interface input/output and diagnostic testing.
Port Management
In order to manage port connections and feature operation, the main control processor
embedded circuit controls the embedded GC circuit, which communicates through the
MBP Office (backplane) card via the HDLC buses. Communication is enabled with
the local card processors on every peripheral card both in the main and in the
expansion units.
The main processor receives status messages from the embedded GC circuit regarding
port activity. The main processor determines the appropriate response based on the
programming entries contained in the system database. The main processor then
instructs the GC as to what action to take with each port.
Memory Management
All system memory resides on the MCP embedded circuitry. RAM is located directly
on the MCB Office card. The MCB Office also acts as a mother card to the DBM-X
memory card. The DBM contains 2MB, 4MB, or 8MB of Static Random Access
Memory (SRAM) expansion memory.
Flash memory, located on the IMC8 card, stores the generic feature software, which
determines the operation of the system. RAM, both on the MCB Office and on the
DBM expansion cards, stores the system configuration database, and is used as a run
memory for general purposes.
Database memory and real-time clock functions in the Coral system are protected
against power loss by a long-life lithium backup battery installed on the MCB Office.
A monitoring circuit on the card constantly measures the voltage level of the battery.
It signals the main processor when the remaining energy stored in the battery is
reduced to the level that it can no longer provide sufficient power to maintain the
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3 Main Control Processor