Telephone set photography

Well this picture taken by my LG G2 mobile and these are telephone sets. when mobile phones was not introduces these telephone sets have a very value. it is really a great invention of the time in communication. the letter was delivered in few weeks if you want to send a message to any person in other part of world. then telephone invent and make a world united, where you can talk directly to a person sitting any where in the world,
it is using media of wire mostly wires are copper in the start of time and then fiber take the copper wires as a media and communication becomes flawless. every person in the world have used this services in life and make it easy to communicate.
it has a chip inside and cradle , cradle has mike and a speaker, you have to talk on mike and listen other person voice in speaker. and a dialing pad to dial a specific number for dial a where you want to talk. it has a beep tone continues if your phone is working.
hope you will like my post and if you like then please upvote and appreciate my work
@automation @cleverbot