In 1971, PhoneMate introduced the Model 400 answering machine that held twenty messages on a reel-to-reel tape. An earphone allowed the user to listen privately to incoming messages. Bell Telephone resisted the introduction of answering machines for many years, fearful that people would make fewer calls if they thought they might be recorded.
Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.