Changes

The transmission, between or among points specified by the user, of information of the user's choosing, without change in the form or content of the information as sent and received;  the use of wire, radio, optical, or other electromagnetic channels to transmit or receive signals for voice, data, and video communications.  

The science and technology of communication over a distance by electronic transmission of information, as words, sounds, or images in the form of electromagnetic signals, and the electronic systems used in transmitting messages, such as telegraph, telephone, cable, radio, or television.

 

[[category:Communication]]

[[category:Communication]]