Using Google Voice as your voicemail on AT&T
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26 Oct 2010
Because I’m tired of having to hunt for this information every time I need it, here’s how to set up your AT&T phone to use a Google Voice account as it’s voicemail backend. In my case, I’m forwarding my iPhone’s voicemail to Google Voice so I can get transcriptions of my messages.
First, set up a Google Voice account. Configure it to not forward calls to any phone number. Record your voice greeting.
Second, open up your phone’s dialer and dial the following, replacing 1234567890 with your new Google Voice phone number...
*61*1234567890# (then hit send)
*62*1234567890# (then hit send)
*67*1234567890# (then hit send)
You should see a message appear on your phone after each time you press send. This will set up your AT&T account to take all calls when the phone is busy, when you decline a call, or when your phone is turned off or out of range and forward the call to your Google Voice number.
Since your Google Voice account is set not to forward your call, it will go straight to voicemail over there.