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Communication is important in large companies or facilities with people having corporate roles. Proper communication creates productive output in the workforce, no matter how distant offices are. The entire business flow depends on the exchange of informa...

Every house with a telephone line connection requires one line and a telephone connected to a telephone exchange. Additional phones in the house require additional telephone lines and different accounts, which is obviously not practical for a household. H...

A Private Branch Exchange is an exchange in telephone communication that only serves a particular company. This is a development in telephone communication that helps big companies needing centralized communication systems avoid the traffic in the Public ...

The first telephones introduced in public were private phones. Like any other newly invented devices, they were only afforded by the wealthy and served only a few people that time, including the government and some popular industries. However, the most pr...

Before Alexander Graham Bell succeeded inventing telephone, he was just playing with sounds with a phonautograph, a machine that could trace sound waves. During this time, Thomas Edison and some other scientists were busy solving the increasing traffic in...