Google is said to be working on plans to add Google Voice service to their Google Apps branded online suite.

Google Apps is offered to businesses and individuals and comes loaded with several services including email (Gmail) and online office productivity suite (Google Docs).

It is currently being used by more than 2 million businesses and 20 million individuals.

Google Voice could be bundled with the premium edition of the Google Apps which could make it a valuable addition to the existing services offered through it.

Google is also working on a public launch of Google Voice that should happen sometime next year.

Currently Google Voice is accessible through an invite only system.