What Is The Main Function Of Telephone Exchange?

Telephone exchanges help to link different switches, thereby completing phone calls from point A to point B. In the old days, when telephone exchanges were staffed by operators, each switch needed to be completed manually by plugging one cable into another switch in a trunk system. Over time, systems evolved, and pulses and tones were used to signal switches - eventually, the need to have operators standing by lessened as automation refined service through telephone exchanges. Today, callers can make international calls that go through almost instantly - in previous decades, these calls could have taken several hours (or more) to complete.

• Learning more...

The history of telephone exchanges is quite fascinating, and it can be learned through textbooks and online resources that trace the invention and improvements of telephone exchanges. From the first, relatively primitive trunk systems, to today's lightning-fast digital systems, technology has evolved to change the way telephone exchanges deliver service to clients. These trunk systems and exchanges are designed by engineers, and today's engineers need special knowledge of digital technology and processes. Lines are installed by technicians and maintained by these technicians, as well as through periodic testing and refinements from engineers.

• Telecom is big business

Linking callers to other callers is what the telecommunications industry is all about. For many companies, telecom is big business and it spans many countries. In fact, worldwide service is really one of the key selling points of most big telecommunication companies. While mobile communications devices, such as cell phones and text messaging gadgets are changing the face of modern telecommunications, there will always be a need for dedicated landline systems and telephone exchanges.

A telephone exchange is a vital component of the telecommunications industry, and creating, maintaining, and (in some cases) manning these systems provides many people with steady and fulfilling employment.