Bell Telephone System Diagram. Search for the phone model and wiring or schematic eg. Describe automatic telephone system.
As these materials span decades of the history of what was at the time the worlds largest corporation the quality varies widely. Alexander graham bell is commonly credited as the inventor of the first practical telephone. It has two tags one has one wire on it and the other has two wires on it.
Diagram of bells telephone system that appeared in the illustrated london news 1877.
As shown in the figureall the landline telephones are connected with the use of twisted pair cables to the local exchange or central officeco. The xl5 door entry telephone. Telephone 238 minus cord for use on ccb circuits in auto except uax 5 6 and manual cb areas 44kb. As these materials span decades of the history of what was at the time the worlds largest corporation the quality varies widely.