telephone in our life

It would be difficult to imagine modern life without the telephone. It has become an indispensable equipment of communication.It saved much time and travel by enabling people to talk to one another over great distances. Nowadays it Is just about as easy to talk across a continent or even overseas as door neighbor. However, it is in emergencies that the telephone really process its usefulness. When there be a fire, or when someone is suddenly taken ill, the first thing one thinks of is 'Where is the nearest telephone?It is a useful way to receive and inform imformation at time.