Google voice is great to have another number. You can use this number for business, or just to have another number in any state. When you sign up for Google voice, all activity is recorded. You can go online and view all history, voice mails, and text messages. Some of the Google voice services such as, voicemail, free text messaging, call history, conference calling, call screening, blocking of unwanted calls, and voice transcription to text of voicemail messages. In terms of product integration, transcribed and audio voicemails, missed call notifications, and/ or text messages can optionally be forwarded to an email account of the user’s choice. Additionally, text messages can be sent and received via the familiar email or IM interface by reading and writing text messages in Gmail or by adding contact’s phone numbers in Google Talk respectively.
Google, via Gmail currently provides free PC to PC voice calling worldwide. Google voice gives you one number for all your phones, a phone number that is tied to you, not to a device or location. Google voice is not a phone service, but it lets you manage all of your phones. Google Voice will let you define which phones ring, based on who’s calling.