부산대학교 도서관

Background of Telecommunications IndustryThe telecommunications industry within the sector of information and technology is made up of all Telecommunications Telephone Company and internet service providers and plays the crucial role in the evolution of mobile communication and the information society.Traditional telephone calls continue to be the industry's biggest revenue generator, but thanks to advances in network technology, Telecom today is less about voice and increasingly about text (messaging, e-mail) and images (e.g. video streaming). High speed internet service for computer-based data applications such as broad brand internet service and interactive entertainment is pervasive. Digital Subscriber Line (DSL) is the main broadband telecom technology. The fastest growth comes from (value-added) services delivered over mobile networks.Source (https://en.wikipedia.org/wiki/Telecommunications_industry)