Lucent Technologies 555-230-024 manual Carriers and Cabinets

Introduction

Carriers and Cabinets

Carriers are enclosed shelves composed of vertical slots that hold circuit packs. Circuit packs make up the logic, memory, and switching circuitry for the system. Port circuit packs connect to telephones, computers, and communications lines. The carriers are designed to accept any type of port circuit pack in each circuit pack position.

Each cabinet contains at least one carrier. The circuit packs fit into connectors attached to the rear of the slots. Every connector is connected to signal buses and power supplies in the cabinet. The cabinets also house equipment that sup- plies power backup, ringing signal voltage, and mass storage for software trans- lations.

There are four types of cabinets:

■Compact Single-Carrier Cabinet. This cabinet, which can be mounted on a wall, houses small system configurations for small organizations. It contains one Processor Port Network and does not connect to any Expansion Port Networks.

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Compact Modular Cabinet. This cabinet is similar to the Compact Single-Carrier Cabinet, but up to three of the cabinets can be connected together.

Single-Carrier Cabinet. These cabinets are modular, can be connected to Expansion Port networks, and can be stacked up to four high. They are often used by small businesses that are growing or expect to grow. The

Multicarrier Cabinet. A tall cabinet that contains up to five carriers and can be connected to Expansion Port networks. Multicarrier Cabinets are used by large organizations that require larger configurations.

1-6Issue 5 January 1998 555-230-024