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A landline is a telephone that transmits signals converted from audio data through physical media, such as wire or fibre optic cable, rather than through wireless transmission as is the case with mobile phonesA rotating number selector on early telephones (and TVs). Introduced in the early 1900s, rotary phones were commonly used from the 1920s until the 1960s, when dial phones were gradually replaced with push button phones (see Touch-Tone)
The telephone has eight main parts, which are a power source, a handset, a dialer, a ringer, a microphone (transmitter), an earpiece (receiver), a switch, and a wall jack. The handset consists of a transmitter and receiver. A switch and power source activate the transmitter system The telephone is an electrical system used to talk to someone in another place by dialling a number on a piece of equipment and speaking into it. She wanted to speak to him on the telephone. If you telephone someone, you dial their telephone number and speak to them by telephone.