Software Upgrades; Key Service Unit; Basic Cabinet - STARPLUS STSe Key System Installation Manual

1-4
Chapter 1 - Introduction

Software Upgrades

Future software enhancements and upgrades are easily retrofitted and installed in the system.
This will in most cases, provide backward compatibility with existing Starplus hardware, further
reducing the cost to upgrade or add features to an installed system.

Key Service Unit

This diagram illustrates the basic layout of both KSU cabinets, the card slots for the extension
boards, and the locations of the Champ connectors.

Basic Cabinet

The Basic Key Set Unit (BKSU) has mounting holes so that it can be mounted on the wall. The
Main Board Unit (MBU) contains the main CPU – MC68LC302, Memory – the memory size is
1 Mbyte (4Mbit x 2), Data is 512 Kbytes (1 Mbit x 4), and all other system-operating type circuitry
to support the maximum configuration of 28 CO lines and 50 stations.
A power supply board is also installed to provide enough power to support all CO lines, stations,
and daughter board options. The BKSU has an external power switch to turn power on/off to
the BKSU and EKSU.
50-pin amphenol connectors are located on the side of the BKSU to provide the interface for the
Station and CO boards.
STARPLUS STSe - Installation Manual
EKSU
BKSU
LCOB DTIB
LCOB
or T1IB or T1IB or SLIB
T1IB, PRI, LCOB, DTIB Basic
or VMIB PRI, or or SLIB SLIB2
T1IB
Key Service Unit
CO Champ
(Male)
Sta Champ
(Female)
CO Champ
(Male)
Sta Champ
(Female)
August 2005