Tech Guide Networks.pdf - Technology Guide Telecommunications Telecommunications Concepts The term telecommunications generally refers to all types of

Tech Guide Networks.pdf - Technology Guide...

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Technology Guide Telecommunications Telecommunications Concepts The term telecommunications generally refers to all types of long-distance communication that use common carriers, including telephone, television, and radio. Data communications is a subset of telecommunications and is achieved through the use of telecommunication technologies. In modern organizations, communications technologies are integrated. Businesses are finding electronic communications essential for minimizing time and distance limitations. Telecommunications plays a special role when customers, suppliers, vendors, and regulators are part of a multinational organization in a world that is continuously awake and doing business somewhere 24 hours a day, 7 days a week (“24/7”). Figure 1 represents a model of an integrated computer and telecommunications system common in today’s business environment. A telecommunications system is a collection of compatible hardware and software arranged to communicate information from one location to another. These systems can transmit text, data, graphics, voice, documents, or video information. A typical telecommunications system is shown in Figure 2. Such systems have two sides: the transmitter and the receiver. The major components are 1. Hardware —all types of computers and communications processors (such as modems or small computers dedicated solely to communications). 2. Communications media —the physical media through which electronic signals are transferred; includes both wireline and wireless media. 3. Communications networks —the linkages among computers and communications devices. 4. Communications processors —devices that perform specialized data communication functions; includes front-end processors, controllers, multiplexors, and modems. 5. Communications software —software that controls the telecommunications system and the entire transmission process. 6. Data communications providers —regulated utilities or private firms that provide data communications services. 7. Communications protocols —the rules for transferring information across the system. 8. Communications applications —electronic data interchange (EDI),teleconferencing, videoconferencing, e-mail, facsimile, electronic funds transfer, and others. Figure 1 Computer Computer Communications Processor Communications channels and media Communications Processor Network Software
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