AT&T is pausing plans to bring high-speed fiber networks to 100 cities in the United States until the rules of net neutrality are set. At a conference on Wednesday, AT&T CEO and chairman Randall Stephenson told investors the US carrier is going to wait and see how the net neutrality battle ends — namely, how Internet service providers (ISPs) will be required to regulate web traffic — before carrying on with fiber broadband installation for consumers.