AT&T Wireless customers
To turn on conditional call forwarding, enter the following 3 commands one at a time on your phone’s keypad, and wait for confirmation. After entering each command, tap Send or Call, hang up, and enter the next command. Replace 1234567890 with your Google Voice number.
- Call forward if unanswered: *61*1234567890#
- Call forward if unreachable: *62*1234567890#
- Call forward if busy: *67*1234567890#