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  • Multi-line Telephone Extension

  • Created: Feb 06, 2021

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Telephone is a device that allows communication for two or more parties over long distance; it converts sounds into electronic signals for transmission through cable lines, then, the receiver decodes the signal back into sound. On a single subscriber line, telephone network like "party line" is a common setup for multiple telephone units to be used. But the "party line" have drawbacks: all the telephone units will receive a "ring" signal from the caller that is intended only to one unit and the conversation of a certain unit can be overheard by other units.

This project is designed to utilize multiple telephones up to nine units without the disadvantages mentioned above.



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