Nortel Networks COMMUNICATION SERVER 1000 NN43021-110 User Manual

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read-only memory (ROM)

Storage system or computer memory that is "burned into" the
microprocessor chip and can be read, but not written to or
modified. ROM is nonvolatile memory.

redundancy

The duplication of software, or hardware, or both (such as
redundant CPUs) used as a standby in case one fails.

SDI

Serial Data Interface. A family of cards equipped with SDI ports
provide the I/O interface for the CS 1000M Large Systemand
Meridian 1 Large System.

software

A set of programmed instruction sequences stored either as
resident programs in system memory or as nonresident programs
stored on disk and loaded into memory when needed.

software generic

A term used to identify the system software. Each software
generic has a series of releases, such as Release 25.

system monitor

A microprocessor-based circuit card that controls and monitors
the status of cooling equipment and power-related hardware and
functions.

system utility card

Provides an interface between the security device and the
computer.

TDS

Tone and Digit Switch

Time Compression Multiplexing (TCM)

The combination of two or more information channels into a single
transmission channel by assigning each information channel an
exclusive periodic transmission time interval.

Terminal Number

Nortel Communication Server 1000

Communication Server 1000M and Meridian 1 Large System Overview

NN43021-110

02.05

Standard

30 September 2008