If the call is missed, it's routed into a voice mail system that users can check on the Web, or via their phone.

FORBES: Google Calling

The goal isn't to create a voice mail system for Facebook, but to give users another option for interacting when typing is either impossible or inconvenient.

ENGADGET: Facebook adds voice recording to Messenger, testing VoIP service in Canada

He designed a technically sophisticated voice-mail system, but the earning potential of the technology wasn't a given.

FORBES

The "other" Indiana Jones invented a voice-mail system that is now used by an estimated 500 million people around the world.

FORBES: Digital Dream House