Power equipment – Nortel Networks NN43021-110 User Manual

Page 48

System architecture

Attendant consoles

Meridian 1 attendant consoles provide high-volume call processing.
Indicators and a 4 x 40 liquid crystal display (LCD) provide information
required for processing calls and personalizing call answering. Loop keys
and Incoming Call Indicator (ICI) keys allow the attendant to handle calls in
sequence or to prioritize answering for specific trunk groups. An optional
busy lamp field provides the attendant with user status.

Meridian attendant consoles support attendant message center options.
The attendant console can be connected to a PC to provide electronic
directory, dial-by-name, and text messaging functions. All call processing
features can be accessed using the computer keyboard.

Power equipment

Large Systems provide a modular power distribution architecture.

Each column includes:

•

a system monitor that provides:

— power, cooling, and general system monitoring capabilities

— error and status reporting down to the specific column and module

•

circuit breaker protection

•

a cooling system with forced air impellers that automatically adjusts
velocity to meet the cooling requirements of the system

•

backup capabilities

Each module includes:

•

an individual power supply unit with shut-off (switch or breaker)
protection

•

a universal quick-connect power wiring harness that distributes input
voltages and monitor signals to the power supply

All options are available in both AC-power and DC-power versions. The
selection of an AC- or DC-powered system is determined primarily by
reserve power requirements and existing power equipment at the installation
site.

Although AC-powered and DC-powered systems have different internal
power components, the internal architecture is virtually identical. AC- and
DC-powered systems differ primarily in the external power components.

Nortel Communication Server 1000

Communication Server 1000M and Meridian 1 Large System Overview

NN43021-110

01.03

Standard

Release 5.0

18 February 2008