Telecommunication is the transmission of signals over a distance for the purpose of communication. The telecommunications system would consist of a computer or terminal on each end communication equipment for sending and receiving data and a communication channel connecting the two users easily.
Sharing of data between computers at different locations. Data are typically sent over telephone lines, but radio waves and satellites are also used. A computer with a communications board, telecommunications software, and modem are needed for communication.

communications technology include the following:

Electronic mail or e-mail is a message transmitted from one system to another through the computerized channels. The sender and receiver must have access to on-line services if they are not connected to the same network. E-mail is the most frequently used types of telecommunication.

Facsimile or fax equipment transmits a digitized exact image of a document over telephone lines. At the receiving point, the fax machine change the digitized data back into the original form.

Voice mail is same to the answering machine in that it permits a caller to leave a voice message in a voice mailbox. Messages are digitized so the caller's message can be stored on a disk.

Videoconferencing includes the use of computers, television cameras and communications software and other equipment. That equipment makes it possible to conduct electronic meetings while the participants are at different locations.

Internet is a global network of computer networks that facilitates access to information on different topics. The Internet is utilized by millions of people daily. Internet term used to describe two or more networks that are joined together. Internet describes the collection of connected networks. The Internet has been accessible by the use of the World Wide Web. The Web allows users to control the millions of sites found on the Internet using software applications called the Web browsers. People use the Internet in numerous ways for both personal and business applications.

Physical devices making up the communications channel are known as the transmission media. These devices include the cabling media such as the twisted-pair cable, coaxial cable and fiber-optic cable and wireless media.
Digital networks more than one routers that work together to transmit information to the correct user and specify the route. An analogue network more than one switches that establish a connection between two or more users. Repeaters may be necessary to amplify or recreate the signal when it is being transmitted over the long distances.

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