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Software architecture 57
Office data
Office data describes the characteristics of the system in terms of
configuration and call-dependent information, such as features and services.
Office data is arranged in blocks defining IPE, system configuration, and
transient data.
Resident programs
Resident programs are always available in memory during system operation.
Some resident programs are permanently programmed into the ROM
portion of system memor y. Other resident programs are automatically
loaded into system memor y at system power-up.
Resident programs include:
•
Error Monitor, which continuously monitors call processing
•
Initialize Program, which locates faults, rebuilds data, and releases
reserve memory areas
•
Overlay Loader, which locates, checks, and loads programs into the
overlay area
•
Overload Monitor, which monitors the volume of system messages and
determines where overloads occur
•
Resident Trunk Diagnostic, which monitors all trunk calls
•
System Loader, which loads resident programs from the disk drive unit
into system memory at power-up
•
Traffic Monitor, which examines the system schedule, transfers traffic
data from accumulating to holding registers, and produces reports
All software programs, including the nonresident programs listed in the
following section are resident in, and accessible from, the memory on the
cards listed above.
Nonresident programs
Nonresident programs are stored on data disks and loaded into the overlay
area of system memory to perform specific tasks. They are removed from
the overlay area when no longer required. Nonresident programs can be
loaded automatically, under program control, or manually, through software
commands.
Nonresident programs are manually loaded into memory through the system
terminal (or maintenance telephone). A terminal can be configured as an
input-only, output-only, or input and output device.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Large System Overview
NN43021-110 01.03 Standard
Release 5.0 18 Februar y 2008
Copyright © 2003-2008, Nortel Networks
.