2.17 Loading And Up-Grading The System Software; Introducing The Software Key - Comdial DSU II System Manual

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2.17 Loading And Up-Grading The System Software

The DSU II contains flash memory that you load with operating software when you install the
system and later re-load with software up-grades as they become available.
The operating software package consists of three parts: The boot-loader EPROMs that is
factory-installed as part of the system, and the software key and software disks that you order
separately. The software disks include the boot loader interface disk and the operating software
disks.
2.17.1

Introducing The Software Key

The software key is a hardware device to un-lock the DSU II so it can accept the system
operating software. Factory technicians program and initialize the software key, and make it
available in several different configurations.
The configurations are as listed below:
DSUII–SW01
DSUII–SW05
DSUII–SW10
DSUII–SW25
The configurations control the number of times that you can use a key to load or up-grade
operating software into a system; however, it does not matter which DSU II system you load.
(For example, with a DSUII–SW01 key, you can load any DSU II system one time; however,
with the DSUII–SW25, you can load or up-grade one system 25 times or load 25 different
systems one time—your choice.)
2 – 52 Installing The DSU II Digital Telephone System
DSU II Digital Telephone System