What Does Answering Machine Mean?
An answering machine is a device used for answering and recording a caller’s message in the event that no one is available to answer the phone in person. Unlike voicemail, which serves the same functionality but is usually a networked or a centralized system made available anywhere as a service, an answering machine is a local device that is attached to or directly incorporated into a physical landline telephone.
Techopedia Explains Answering Machine
The answering machine uses a technique originally invented by Valdemar Poulsen in 1898 for recording telephone conversations. His device was called a telegraphone or wire recorder, which was actually used to record voice dictation and even music, but it laid the foundation for the modern answering machine. The invention of the answering machine itself is a bit unclear, with some sources claiming that it was William Muller in 1935, whereas others claimed that it was William Schergens in 1931.