This is the Telegraph Company's first wall phone model with the newest, most up-to-date handset. It includes an alternating current generator (the crank handle) to make telephone bells ring at a manual switchboard, and also a local battery.
This model was manufactured from 1893-1925.
This phone is paired with another phone further down in the museum. Try them out, together with someone else. Start the call by cranking the alternator, and then talk to each other in the handsets.
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