NEC nd-20292 manual General Information, Equipment Description

ND-20292

CHAPTER1

APRIL,1990

170.1 GENERAL INFORMATION

One set of Job Specifications and a wall mounting template are included with the ESE-32B-1 CCU. All optional equipment such as external amplifier, MOH source, BGM source, external speaker, modem, etc. must be locally provided.

170.2 EQUIPMENT DESCRIPTION

1.ESE-32B-1 CCU

This CCU is the basic Central Control Unit. This steel cabinet is designed to accommodate other expansion CCUs. A PSE-AD-1 or PSE-DD-1 power supply is

required to provide service. It also requires a CPU-E(or higher revision) ETU and a TSW-E( ) ETU. The ESE-32B-1 CCU provides eight slots in the interface card section that can support four ports each. The ETUs that can be installed in these eight slots are:

COI-E, COI-EB,TLI-E, TLI-EB, ESI-EA, ESI-EB, SLI- EA, SLI-EB, CNF-E, MFR-EA, ECR-E and VMI-E ETUs.

Additionally, there are three slots in the common

control/optional card section. Two of these three slots are occupied by the CPU-E( ) and the TSW-E ETUs. One slot can be used to install an optional common card such as an SMDR-E or an LCR-E ETU.

When slot eight in the interface card section is not occupied, it can be used to install another optional common card.

The ESE-32B-1 CCU (maximum one per system) provides service for up to thirty two ports.

2.ESE-32E-1 CCU

This CCU is the expansion Central Control Unit. This steel cabinet is designed to be stacked on top of the ESE-32B-1CCU or on top of another ESE-32E-1 CCU; it is not a stand alone unit and must be used in

conjunction with the ESE-32B-1 CCU.

The ESE-32E-1CCUs require a PSE-AD-1 or PSE-DD-1power supply to provide service to all equipment supported by this CCU. It also requires an MMC-E ETU to control this equipment.

The ESE-32E-1 CCU provides eight slots in the interface card section; each section can support four ports. The ETUs that can be installed in these eight slots are: COI-E, COI-EB, TLI-E, TLI-EB,MFR-EA,ESI-EA,ESI-EB,SLI-EA,SLI-EB,CNF-E,ECR-E,and VMI-E ETUs.

In addition, there are three slots in the common

control/optional common card section. One of the three slots is occupied by the MMC-E ETU. Two slots can be

used to install optional cards such as LCR-E and SMDR-E ETUs.

A maximum of three ESE-32E-1 CCUs can be installed. The first expansion CCU expands the total system capacity to sixty-four ports. Two expansion CCUs provide service for system capacity of ninety six ports. The third expansion CCU allows the system a maximum of 128 ports.

3.CCU BASE WALL MOUNTING PANEL This unit is required for wall mounting the third expansion CCU (ESE-32E-1).

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Figure 100-9 Front View of an open three CCU Electra Mark II

4.PSE-AD- 1 PSU

The PSE-AD-1 PSU is an AC/DC power supply and when used, is mounted in each CCU. This PSU converts nominal 117 VAC into the necessary voltages required to operate the system.

The PSU provides the required DC voltages (-5V, +5V, -24V) to ETUs installed in the CCU and to the devices connected to the CCU.

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