AT&T on Friday accused Google of running against net neutrality principles with its Google Voice service. A letter sent to the FCC by the carrier claims that the service would technically violate the terms of the FCC's existing Internet Policy Statement, as well as proposed formal rules, as it deliberately blocks calls made through the phone gateway to certain rural numbers to save Google money. That unfairly discriminates against AT&T and other conventional carriers that are required to allow those calls, the message read.