2d cad blocks of telephone in AutoCAD, dwg file.

This Architectural Drawing is AutoCAD 2d drawing of 2d cad blocks of telephone in AutoCAD, dwg file. A telephone is an instrument designed for the simultaneous transmission and reception of the human voice. Telephones are inexpensive and simple to operate, and they offer an immediate, personal type of communication. Billions of telephones are in use around the world.