Chapter 1 System Introduction

1.1 System Features

The “Multi-Party Talk” Paging system PA3 is designed for communication in industrial environments.

A: It is suitable for high noise, corrosive atmospheres, hazardous areas and extremes of temperature, dust and humidity create hostile environments.

B: The “Multi-Party Talk” system have two operations: the first one is group calling through pick-up handset and pressing one button to auto-dial; The other one is two-way private intercom in one line or more two-way groups calling and can be allowed 12 persons communication at most.

C: The system also can be connected to external network, and the extension can call other phones outside of the network.

1. To initiate communication or broadcast over the system to all other station, the operator at one of the station lifts the handset from the cradle, presses * to call and speak to all the other party.

2. All the stations rings and auto-answers. All the other user at all other station can joins the conversation by lifts the handset and speaking into the handset. The system allows all party simultaneous conversation without cross-talk or interference. After conversation each station will auto off to release the line.

3. To initiate communication or broadcast to one of the other station, the operator at one of the station lifts the handset from the cradle, presses ID number (extension number) which you want to call, and speak to them. After conversation each station will auto off to release the line.

Features:

Hand in hand cable connection to save cable

Two-way, all-party communication

Wall mount, desktop, models

Indoor, outdoor and hazardous location models

Center power supply (all in one) available in 110VAC~ 230VAC within Distance Maximum to 7KM within 30 extensions

If over 30 extensions and over 7KM, each station need AC power supply 110VAC~ 230VAC

Automatic broadcasting with 8W loud speaker

Analogue system auto answer and auto stop

Self healthy check

LCD display for caller ID and the dialing number.

Last number repeat dial

ID number programmable

2 speed dialing keys



Specification:

1. Robust SMC die-cast body, vandal resistant and tamper resistant

2. Weather resistant to IP66 standard, service temperature range from:-35℃ to +75℃

3. Magnetic reed hook-switch

4. Cable line powered. No external power or battery back up required.

5. Lightening protection to ITU-T recommendation K.21

6. Handset: made of special SMC, high anti-knock resistance, Weatherproof, armored cable optional,

7. Hearing Aid compatible receiver

8. Extension integrity wiring to enable the other station to check if the telephone unit is still operational for Self healthy checking

9. 7 minutes time out

10. Easy installation/ replacement

Application:

Popular applications include oil and gas platforms, nuclear power plants, shipbuilding, chemical plants, oil refineries, steel company, subway tunnels, and other large infrastructure projects



1.2 system composition

It is comprised of wall mount telephone station, desk telephone station, IIC explosion proof user telephone, outline telephone station, unidirectional broadcast telephone station, line equalizer, communication cable, AC 220V powered, etc.

1.3 System Power Supply

AC 220V centralized power.

1.4 Telephone station type

Indoor wall mount telephone station,outdoor wall mount telephone station,desk telephone station, IIC explosion proof user telephone, outline telephone station, unidirectional broadcast telephone station.

1.5 Telephone station Capacity

Telephone station Capacity system: 2-999.

1.6 Transmission distance

Systems for the effective transmission distance: 26Km

Chapter 2 Technical characteristics



2.1 Using Environmental conditions

Environment temperature:-30℃~+70℃ (outside wall mounting telephone station)

-10℃~+35℃ (inside desk mounting telephone station)

Relative humidity:≤90%

Environmental noise:≤110dB (outside wall mounting telephone station)

Barometric pressure:70Kpa~106Kpa



2.2 Main Features

2.2.1 Broadcasting Feature

Afer pick up the hook; L1 +outline number:calling L2 or L3, press #+ID number: single calling(calling by one to one). 3. Press L2 or L3, press #+99999: whole calling. 4. Press L2 or L3, press #+ group number: group calling 5. Press L2 or L3, press speed dial number at least three second. When hear the dial tone can release the button.

Open broadcast system function to make a broadcast call,

2.2.1 Duplex call

After the called user pick up the hook. Caller can make a duplex calling through the handle microphone or press the hands-free button.

2.2.2 Channel switching

After the called user pick up the hook. Caller can make a duplex calling through the handle microphone.

2.2.3 Channel switching

Rotary Switches operate 3 ~ 6 communication channel selection.

2.2.4 Boardcasting mute setting

Maintainer can setting the call volume via the mute switch on the motherboard;

2.2.5 Using PSTN to make outline telephone communication

Outline user can make a boardcasting calling and communication via outline telephone station to PSTN.

2.2.6 Expansion easy to use

Each station works independently. All the telephone station work via 8-14 core cable in parallel. If any one station failure does not affect the normal operation of other user stations. Users can according demand to expand station or relocation. It’s unlimited.

Applications:

Communication system for restaurant ,hospital / Industrial The second party three party five party talkback system.