Telecommunications essentially involve communicating through different transmission systems. The basic concept of telecommunications essentially involves transference of signal from one end to another, and there are various transmission systems mediums to do that. These transmission systems essentially interconnect communication devices (end nodes) through various channels of guiding the signal energy. The telecommunications transmission system can either be unidirectional or they can be bi-directional. The transmission system basically consists of a transmission device for generating and interpreting the signal at both ends and a transmission medium for transferring the signals. The transmitting device converts an information signal into a form of electromagnetic wave (radio), optical signal or electrical signal in order to facilitate its transmission through the transmission medium. Understanding transmission system working procedure is essential in interpreting the fundamental concepts of telecommunications. Read more on Telecommunication on whatistelecom.net