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General Information
General Information
System Overview
The STSe Key Telephone System supports a maximum configuration of 28 CO/PBX/Centrex
lines and 50 station devices. The Basic Key Service Unit (BKSU) and Expansion Key Service Unit
(EKSU) accommodates plug-in boards that can be added to expand CO/STA capacity. Both
KSUs can generally support a 12x24 configuration for a total capacity of 28x50. The BKSU and
EKSU cabinets are installed using industry-standard blocks, jacks, and skinny wire cabling. This,
combined with the ability to program the system using a key terminal with a digital display,
reduces installation cost and maintenance requirements.
An optional 9600-baud Modem Unit (MODU) facilitates remote programming.
System Interface Boards
The STSe system can support the following types of interface boards:
CO card provides 4 loop start lines (LCOB)
Station card provides interface for 2 or 4 single line telephones or 8 digital key telephones
(SLIB or DTIB)
Primary Rate Interface Board (PRIB)
T-1 Interface Board (T1IB)
Primary Rate Interface Board (PRIB)
Voice Mail Interface Board (VMIB)
CO Circuitry
All CO interfaces are equipped with transformer barriers for system classification as a FCC fully
protected system. Each CO circuit supports rotary (out-pulse) dialing and loop supervision
(disconnect detection) under software control. The DTMF tone signals and system supervisory
tones can be generated in each keyset or on the main PCB. The STSe system uses a proprietary
tone plan for providing internal progress tones.
System Programming / Database
The system architecture allows system programming changes to be made without interrupting
state event software control of normal communications. Call processing continues while the
customer database is updated. All programming changes to the customer database
programming are made either from a digital terminal (Station 100) or from a terminal
connected to either an I/O port or remotely via the optional modem board.
Keyset / DSS Console
The STSe system features a digital telephone with 24 flexible buttons, 3 interactive soft keys, a
2 x 24 LCD display, and includes speakerphone capabilities. A 48-button DSS console is also
available. Each telephone can connect to an optional CTI "box". The optional CTI box provides
data connections and transmissions through an RS-232C connection on the phone.
STARPLUS STSe - Installation Manual
1-3
Chapter 1 - Introduction
August 2005
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Table of Contents
Troubleshooting
