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A well established communication system is very essential during a disaster. People have to be informed of impending disasters and they have to be given instructions to meet the disaster with least casualty.

Rescue and relief operations depend a great deal on an efficient communication system.

Rescue teams have to know were relief materials are available and they need to know the particular requirement of the area. They should also know of any further disaster in that area and most of all there should be coordination among the members of the team, to make the rescue operation successful.

For all this an effective and reliable communication system is necessary.

Common Gadgets used for Communication

The Public wired telephone, known as the Public Switched Telephone Network – PSTN – is the most popular means of communication today.

The PSTN connects all government and private offices, police stations, fire stations, hospitals and a majority of homes and business places by transmitting and receiving voices, fax and data.

The wireless telephone or the mobile telephones are becoming very popular today because of its versatility. It came be carried anywhere and it is compact.

The satellite is used for wireless communication.


Functioning of wireless communication system

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