Carrier Access 1750 user manual System Architecture

Planning and Ordering Guide

System Architecture

The Broadmore 1750 is shipped in a minimum usable configuration with a factory installed Alarm/Power Module in the right-most slot. Unused slots are covered with blank panels except the slots for installing a single NIM, SAM, and CPU module.

The Broadmore 1750 chassis can be configured with the following modules: Network Interface Module (NIM) – 1 or 2 (must be identical)

Service Access Module (SAM) – 1 or more

Central Processing Unit (CPU) – 1 or 2 (must be identical)

Alarm/Power Module (APM) – 1 (factory installed)

Input/Output Module (IOM) – 1 for each NIM, SAM, and CPU (installed in rear panel immediately behind corresponding module in front panel)

Module slots are populated as follows:

The right-most slot, labeled “APM”, is for the Alarm/Power Module.

The two left-most slots, labeled “A” and “B”, support Network Interface Modules (NIMs). The protection NIM goes in slot “A” and the working protection NIM in slot “B”. If the system is not configured for NIM redundancy, the single NIM should be inserted in slot “B”.

The two slots closest to the APM slot, labeled “CPU Q” and “CPU R”, support the CPU modules. Either CPU can operate as the master or redundant protection unit. If the system is not configured for CPU redundancy, the single CPU can be inserted in either slot.

Slots “C” through “N” are for Service Access Modules (SAMs). SAMs should be installed from left to right, so that they will be close to the NIMs.

Slots “P” if for the Protection SAM.

Input/Output Modules (IOMs) install from the rear of the chassis, directly behind the corresponding front panel modules.

NOTE: For recommended SAM locations, see the following configuration guidelines.

Broadmore 1750 - Release 4.6 2-7