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ESI-50L Hardware Installation Manual Overview

A.1

Overview

Cabinet components

The ESI-50L’s cabinet components

consist of the standard Base Cabinet and an optional Expansion Cabinet.

The ESI-50L can accept one Expansion Cabinet.

Base Cabinet

The ESI-50L Base Cabinet is designed for easy installation and component access. The Base Cabinet,

which measures 8.5

″ W  11″ H  3″ D, houses a main board with a built-in 482 card, as well as the Memory

Module, Network Services Processor (NSP), one multi-purpose serial port, an MOH connector, an additional

port card slot (see “Port card,” below), and an external wall-mounted power supply.

Expansion Cabinet

The ESI-50L’s optional Expansion Cabinet contains two port card slots, providing a total system capacity of

three port cards (in addition to the built-in 482 card).

Main board

The ESI-50L main board combines leading-edge hardware components — including a Motorola

ColdFire

processor and DSP structure — along with proprietary operating system software. The board provides: system

control of the Memory Module and port cards; a standard RS-232C DB9 serial port; a built-in modem for remote

access; an external paging-device interface; MOH interface; and an NSP, which provides remote access via

TCP/IP and supports certain optional ESI PC software applications.

Memory Module

The Memory Module — a CompactFlash

with proprietary formatting — contains all system programming

and configuration data, and pre-loaded voice prompts. The Memory Module provides voice storage at 64 kilobits

per second — the industry's highest-quality sampling rate — and has a voice storage capacity of 15 hours.

Power supply

The ESI-50L’s 3-amp, 24 VAC power supply is included at purchase.

Port card options

Whether built-in or external, each 482 card

provides circuits to connect up to four loop-start CO lines, eight

Digital Feature Phones, and two analog station ports. The CO line ports support standard CO and Centrex loop-

start lines; ground-start CO lines are not supported. Only one analog device can be connected to each analog

station port. This card uses 10 station ports and four CO ports when installed.

Notes: The main board comes in a four-line, eight-digital station, two-analog port configuration. You can add three

482 port cards on an ESI-50L. Therefore, the system can have the following configurations.

— 4  8  2: Base Cabinet (main board only)

— 8  16  4: Base Cabinet with one additional 482 port card.

— 12  24  6: Base Cabinet with one additional 482 port card and an Expansion Cabinet

with one 482 port card.

— 16  32  8: Base Cabinet with one additional 482 port card and an Expansion Cabinet with

two 482 port cards.

Memory Modules and port cards are packed separately and are mounted in each system’s cabinet during installation.

The external 482 card also is used by the ESI-50L, the ESI C-Plus, and IVX S-Class Generation II systems.

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