General description – Toa N-8000 Series User Manual

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Chapter 1

GENERAL DESCRIPTION

1. GENERAL DESCRIPTION

The N-8000 Series is a packet intercom system (IP network compatible intercom) employing packet audio

technology*

. By connecting IP intercom exchanges (which can connect up to 16 stations per exchange),

IP stations, and various kinds of interface units to a network (LAN or WAN*

), an optimal system can be

constructed for in-house or wide area information communications such as duplex conversations between

stations, periodical broadcasts, and BGM broadcasts. Since up to 192 exchanges, IP stations, and various

kinds of interface units can be combined, systems of up to a total of 3072 stations can be realized. An echo

canceller*

and voice switch realize hands-free conversation (conversations made without using a handset at

both parties) between stations. Depending on conditions, full duplex (simultaneous two-way) conversation by

way of an echo canceller or half duplex (alternate two-way) conversation by way of a voice switch is made.

(Refer to

)

In addition, The system's various interface units and modules can be used to realize a host of functions,

including contact bridging by means of contact input and output control, contact external equipment control

and timer-activated fixed-time broadcasts, connection to outside lines (central office lines), and broadcast to the

SX-2000 system. Further, the system supports two different conversation methods and is capable of operating

in master/master or master/sub configurations.

Technology related to audio transmission over a network

The fixed global IP address must be assigned to the units connected via the Internet.

A circuit that prevents acoustic feedback or echo generated when the voice output from the station's internal

speaker enters the microphone.

Warning

This is a class A product. In a domestic environment this product may cause radio interference in which case

the user may be required to take adequate measures.