Google Voice is all set to change the face of modern communication. This is a free service that uses VoIP calls to interconnect phone numbers. Google Voice is a service that gives you one number for all your phones, voicemail that is easy as email, and many enhanced calling features like call blocking and screening, voicemail transcripts, call conferencing, international calls, and more.
With Google Voice, you get all your calls through a single number. Just add your other numbers to Google Voice and then make your own rules for how your phones ring. Click the Settings link on the right side of the page and click the Phones tab to change your phone settings and add the numbers you want to forward your calls to.
Google Voice was launched in March 2009, now it is available in the invite only mode and only available in USA. Google voice is derived from Grand Central which was acquired by Google in 2007. All the previous members of GrandCentral were given an account along in Google Voice service.
Users of Google Voice are able to select a single phone number, from various area codes. When a Google Number is called, any phones set by the user will ring. The user can set a particular phone to ring based on the caller, time of the day etc. The user also has the option for voicemail, block calls, call forwarding etc.