Emergency telephones are commonly found alongside major roads throughout the world. In India it is getting increasingly popular and many projects are on planning stage to install SOS telephone booths on motorways, highways, Freeways, market area. "SOS" emergency phones, generally coloured in yellow, These telephones are almost always marked by a placard or sign indicating a unique serial number or identifier which allows the authorities to know exactly where the caller is - even if the caller does not know - by having the caller read the short identifier from the placard over the telephone. Some phones are equipped with the equivalent of caller id and the agent receiving the call can identify the location even if the caller cannot.
Emergency phones can also be installed at the ends of bridges or near cliffs which have a history of mishaps. They are also useful along the coastline where members of the public may wish to report swimmers or boats in danger at sea. These further can be connected directly to the coastguard. Emergency phones are also found in elevators where entrapment is very common. These connect to an operator who can help people escape the stopped elevator.
It is also becoming necessary to in many countries, where people may feel vulnerable or unsafe at night. They are commonly found on university campuses. These are generally linked to security companies who patrol the streets where the phones are located. It is going to become integral part of security measures in college campuses and universities.
As Public telephone for indoor or outdoor, Taxi or bus stands or station, Highway call box Railway, metro, ATM machines side, Tunnel, Port, Dock, Mines, Generation facilities... A good ideal telephone for use in wet or corrosive atmospheres
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