You can now Make and Recieve Calls from Gmail via Google Voice
Google Voice is a telecommunications service by Google. The service provides a US phone number, chosen by the user from available numbers in selected area codes, free of charge to each user account. Inbound calls to this number are forwarded to other phone numbers of the subscriber. Outbound calls may be placed to domestic and international destinations by dialing the Google Voice number or from a web-based application. Inbound and outbound calls to US (including Alaska and Hawaii) and Canada are free of charge. International calls are billed according to a schedule posted on the Google Voice website.

The service is configured and maintained by the user in a web-based application, styled after Google's e-mail service, Gmail. Users must have an established US telephone service to activate Google Voice. Users must configure this and optionally, additional phone numbers that ring simultaneously when the Google Voice number receives a call. The user may answer and receive the call on any of the ringing phones. Google Voice provides additional features such as voicemail, call history, conference calling, call screening, blocking of unwanted calls, and voice transcription to text of voicemail messages. Received calls may be moved between configured telephones during a call.

Here are the steps from Google on how to use this feature.

To get started, check the box next to Google Chat in your list of forwarding phones and the next time someone calls your Google Voice number, Gmail will notify you of an incoming call. You can take the call or even listen in as the caller leaves a message, in a single step right from your computer.

To make a call, just click the Call phone link in Gmail and enter any number or name from your address book.

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