NEC ELECTRA ELITE IPK II, General Description Manual

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Document Revision 1 Electra Elite IPK II
1 - 8 Introduction
S
ECTION
3
S
YSTEM
D
ESCRIPTION
The Electra Elite IPK II uses a universal port concept. These ports support
telephones, outside lines and other circuits and devices. The assignment of ports is
flexible, but the system configuration determines the number of ETUs
that can be
installed. The maximum number of devices that can be
supported by the system are
shown in Table 3-1 Maximum System Capacities for Station Interface ETUs on page
3-1 , Table 3-2 Maximum System Capacities for Trunk Interface ETUs on page 3-8 ,
Table 3-3 Maximum System Capacities for Application Interface ETUs on page 3-11 .
The universal port technique provides flexibility for meeting various customer
requirements by allowing a wide range of configurations.
Design Technologies
J
Non-blocking time division switching for Multiline Terminals
J
Stored program control
J
Distributed processing based on the use of microprocessors
Design Goals
J
Modular Growth
J
Universal Slots
J
Variety of Terminals
J
Ease of Operation
J
Networking Ability
J
Computer Telephony Integration
J
IP Converged Technology
The Electra Elite IPK II system is a 32-bit microprocessor based, stored program
controlled, digital communication system using Pulse Code Modulation (PCM).
The system has central equipment cabinets and telephones located throughout the
installation site. The central equipment cabinets contain the Key Service Unit (KSU).
A maximum of three Electra Elite IPK II KSUs can be installed to accommodate the
requirements of each customer.
The KSUs are built for modular growth. The Electra Elite IPK II KSUs are stacked
vertically for quick interconnection. Printed circuit boards, called Electronic Telephone
Units (ETUs), provide common control and interface to equipment that is external to
the KSUs.
Interface ETUs are installed in the KSU to support the various telephones, outside
lines, and other devices or features. The same ETUs are used for both the basic and
expanded port packages.