Nortel Networks COMMUNICATION SERVER 1000 NN43021-110 User Manual

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List of terms

ISDN

Integrated Services Digital Network

line

A communication channel or circuit; an electrical path.

loop

A bidirectional path between network equipment and peripheral
equipment.

module power supplies

Individual power units that generate the different DC voltages
required by the cards installed in each module.

Network Equipment

A hardware subsystem that provides digital multiplexed switching
for voice, data, and signaling paths.

office data

Office data represents system configuration data, peripheral
equipment data, and transient data (temporary) used for call
processing.

PCM

Pulse Code Modulation.

pedestal

The bottom element in a column. Each pedestal houses a blower
unit, an air filter, the PDU (which contains the column circuit
breakers), and the system monitor.

power distribution unit (PDU)

Input power for CS 1000M Large Systemand Meridian 1 Large
Systemare brought into the pedestal to the PDU. The PDU
distributes input power to the column.

Pulse Code Modulation (PCM)

A modulation technique where the signal is converted from an
analog to a digital format by sampling the signal at periodic
intervals and digitizing the amplitude into a finite number of
discrete levels

random-access memory (RAM)

A storage system or computer memory accessible by the user for
either storing or retrieving information. RAM is volatile memory.

Nortel Communication Server 1000

Communication Server 1000M and Meridian 1 Large System Overview

NN43021-110

02.05

Standard

30 September 2008