type of:

EE, electrical engineering

the branch of engineering science that studies the uses of electricity and the equipment for power generation and distribution and the control of machines and communication

types:

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telephone, telephony

transmitting speech at a distance

telegraphy

communicating at a distance by electric transmission over wire

wireless

transmission by radio waves

broadcasting

taking part in a radio or tv program

multiplex

communicates two or more signals over a common channel

voice mail, voicemail

a computerized system for answering and routing telephone calls; telephone messages can be recorded and stored and relayed

call, phone call, telephone call

a telephone connection

call forwarding

lets you transfer your incoming calls to any telephone that you can dial direct

call waiting

a way of letting you know that someone else is calling when you are using your telephone

radiotelegraph, radiotelegraphy, wireless telegraphy

telegraphy that uses transmission by radio rather than by wire

radiotelephone, radiotelephony, wireless telephone

telephony that uses transmission by radio rather than by wire

Rediffusion

a system for distributing radio or tv programs

radio, radiocommunication, wireless

medium for communication

TV, telecasting, television, video

broadcasting visual images of stationary or moving objects

reception

quality or fidelity of a received broadcast

type of:

medium

a means or instrumentality for storing or communicating information