Panasonic KX-TVP150E, Overview

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Overview of VPS Functions O-2-3
2.1 System Configuration
Application programs and the system administration table
from the hard disk are read into dynamic RAMS for use
by the system.
The RS-232C interface can be used to connect a terminal
or printer to the system. It can then be used to establish
system settings, administer the system and check usage
status.
The clock generator supplies the clock signal to the time-
sharing switch, which connects the CO card with DSP
cards. The time-sharing circuit performs parallel-serial data
conversion.
2.1.2 System Expansion
The basic VPS configuration utilizes two phone lines and
is capable of handling two calls at a time. It can store up
to 18 hours of voice data. This basic configuration can be
expanded to handle up to a maximum of eight simulta-
neous calls. In order to add more telephone lines, addi-
tional CO cards can be installed. This will make it possible
to provide more incoming call services, such as the Voice
Mail service, Automated Attendant service, Bulletin Board
service, Interview service and Custom service. To enable
the system to handle more calls simultaneously, more DSP
cards should be added.
Increasing The Number
Of CO Cards
By installing up to four CO cards in free slots, the number
of lines the VPS can handle can be increased to eight. One
of the five incoming call services (Voice Mail, Automated
Attendant, Bulletin Board, Interview Service or Custom
Service) can be assigned to each line. In addition, each line
can be assigned two outgoing call services, such as Message
Waiting Notification and External Delivery.
Increasing The Number
Of DSP Cards
With four additional DSP cards installed, the VPS is able
to handle eight calls simultaneously. Each DSP card
houses two DSPs (Digital Signal Processor), each of
which is connected to a separate telephone line. Each DSP