Introduction In describing Cellular Radio, ISDN (Integrated Services Digital Network) and Satellite Communications we must first have a general understanding of the meaning of these forms of Telecommunications. After a brief explanation of the different forms, they will be described in more detail. Then the present and future roles in Irish Telecommunications will be looked at and some examples given. This will then lead to the conclusion. Cellular Radio is the use of Technology using low powered radio transmission for transmission and receiving voice or data to a telephone network. Users can be stationary or mobile. It means users are no longer constrained to place to place as it is a “wireless” system. 2. What is ISDN (Integrated Services Digital Network)? ISDN is a system which provides digital capacity i.e. voice, video ....

Number Of Pages: 7

Number Of Words: 1719

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