Elisha Gray and Alexander Graham Bell both invented the telephone in 1870. The telephone allowed for voice communication over distances using electrical signals transmitted over a wire. The telephone revolutionized communication and became an important part of modern society.

1. Telephone:

2. Telephone: Information: Who invented it? Two inventors Elisha Gray and Alexander Graham Bell. When did they invent it? In 1870.

3. Telephone: Other Information: http://inventors.about.com/od/bstartinventors/a/telephone.htm