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 Communications are defined as voice, data, and video signals, sent between two points. These signals can be one way, such as what you see on television or the message from a pager, or two way, such as a wired or cellular telephone. |
| The process is simple. Signals are converted to electrical impulses that are sent from a source through a transmitter along a distribution line to an intended receiver. A distribution line can be wireless, meaning signals are sent through the air and received by different types of antennas for microwaves or broadcast signals, or wired, meaning using some sort of copper, coaxial, or fiber optic cable or wire. Cable and phone lines are run from poles to buildings or structures. Two-way signals require a switch or router that allows a response to be sent back. |
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