Describe the advanced techniques of DC modulation. Describe the advanced techniques of pulse code modulation. Multiplexing Describe advanced methods of signal multiplexing. Modems Describe the operation of modems. Describe the different types of electronic wire and cable used in transmission media.
Terrestrial transmission Describe the characteristics of terrestrial radio transmission.
Satellite transmission Describe satellite transmission processes. Optical transmission Describe the characteristics of optical transmission systems. Call processing Describe the automated processing of telephone calls. Sending digital data Describe the advantages and disadvantages of sending digital data via telephone systems. Describe the operation, advantages, and disadvantages of dedicated, switched data communications networks.