Starplus Triad Xts Installation Manual

Product Description1-3
Chapter 1 - Introduction
Product Description
Introduction
TheXTSDigital Key Telephone System is a hybrid Key Telephone System, designed to meet the
telecommunication needs of medium or large sized business offices.
TheXTSSystem incorporates state of the art digital technology for command processing and
voice switching, utilizing a Pulse Code Modulation/Time Division Multiplexing (PCM/TDM, “A”
law or “U” law) distributed switching matrix.
TheXTSachieves a high level of flexibility...

1-4Product Description
Chapter 1 - Introduction
Key Service Unit
The Key Service Unit (KSU) is a metal frame cabinet designed for wall or rack mounting. It
contains a backplane with connectors that include a PSU slot, 9 universal slots, an MPB slot, an
LMU slot, a RAU slot, and PFTU and RGU connectors. TheXTSKSU consists of Cabinet 0 and can
include optional Cabinets 1 and 2 for added capacity. Cable ties are located on the front edge
of the cabinet to allow connecting cables to be stored neatly.
The...

Product Description1-5
Chapter 1 - Introduction
There are nine universal slots in the MB (slots 0-8). Any kind of peripheral card can be installed
in the universal slot, but a peripheral card that contains a CPU cannot be installed in Slot 8 of
Cabinet 0 (T1, PRIB, BRIB, VOIP, LCOBC, SLIBC). There are fixed slots for the PSU, PFTU, MPB, LMU,
RGU3, and RAU.
Power Supply Unit
A Power Supply Unit (PSU) is required in each Cabinet of the Key Service Unit. The PSU converts
commercial AC power (110 - 127 / 220...

1-6Product Description
Chapter 1 - Introduction
MPB2
The MPB2, incorporates the systems RAM, master clock, 1 external MOH port, 1 external paging
port, 2 RS-232C ports, and the systems PCM voice processing and main micro-processor. The
microprocessor is a 32-bit high speed“RISC”CPU which receives and transmits signaling
information from/to other PCBs, controls feature activation, and PCM time-slot interchange.
The MPB has 4 built-in DTMF receivers.
LD1 is the PLLU Synchronization Indicator. This LED will...

Product Description1-7
Chapter 1 - Introduction
Extension Boards
Several types of extension boards are capable of supporting various types of telephones as
follows:
Digital Telephone Interface Board
The Digital Telephone Interface Board (DTIB) provides 2-wire interfaces for telephone
connection. Two versions are available (DTIB12 and DTIB24).
The DTIB provides digital voice and data communications to/from digital telephones.
An industry-standard amphenol-type female connector is mounted on the front edge...

1-8Product Description
Chapter 1 - Introduction
CO Interface Boards
The types of CO Interface boards are listed in the table and narrative that follow.
Direct Inward Dial Board
The Direct Inward Dial Board (DIDB) provides four analog DID CO interface ports. The DIDB can
be optionally equipped with a DTMF Receiver Unit (DTRU) to detect DTMF tones. If a DIDB is
used, a DTRU is required; it does not necessarily have to be mounted on the DIDB, but it must
be installed within the system.
»Add-on Boards: DTRU...

Product Description1-9
Chapter 1 - Introduction
Loop Start CO Line Interface Board
The Loop Start CO Line Interface Board (LCOB) provides Loop Start CO Lines which support
pulse/DTMF signal. Each interface contains ring and loop current detection circuits, Analog-to-
Digital and Digital-to-Analog conversions, and pulse and ground flash signaling circuits. The
LCOB contains LEDs to indicate the in use status of each CO Line.
Three versions are available: LCOB, LCOBC, and LCOBE.
The LCOB has three RJ14...

1-10Product Description
Chapter 1 - Introduction
Basic Rate Interface Board
The Basic Rate Interface Board (BRIB) interface provides four Basic Rate Interface circuits. Each
circuit is comprised of two bearer (64Kbps each) and one data (16Kbps) channels (2B+D). When
a BRIB is programmed into the system, the system interprets all B channels as trunks. Thus, one
BRIB which contains four 2B+D circuits provides eight line appearances to the system. A
maximum of seven BRIBs can be installed into the system...

Product Description1-11
Chapter 1 - Introduction
Message Waiting Unit
The message waiting unit (MSGU) provides a message waiting light indication on single line
telephones.
†One MSGU can be installed on each SLIB (required if message wait indication is needed).
†One or two MSGU48s can be installed on each SLIBE or SLIBC (required if message wait
indication is needed).
Program Module Unit
The CPU operates on code in the flash ROMs in the Program Module Unit (PMU) which contains
the system control,...

1-12Product Description
Chapter 1 - Introduction