The Evolution of the Telephone Ring: From Pencil Thumps to Dual-Tone Ringing
2025-02-07
After the invention of the telephone in 1876, notifying someone of an incoming call was a challenge. Early methods involved crudely thumping a pencil on the diaphragm, which was inefficient and damaging. Thomas A. Watson then invented a 'hammer' device, followed by a 'buzzer,' but the sound was harsh. Finally, in 1878, Watson developed the dual-tone ringer, which became the global standard for telephone signaling, solving the incoming call notification problem. This narrative showcases the evolution of early telephone technology.