The FCC said today that it had settled its investigation into two 911 outages experienced by AT&T customers last year. On March 8th, AT&T wireless phone customers using Voice over LTE weren't able to connect to 911, an issue that lasted around five hours and affected 12,600 people. Then again on May 1st of last year, a second outage, lasting just over 45 minutes, prevented 2,600 911 calls from going through. Planned network changes were the source of the problem, inadvertently interfering with AT&T's 911 call routing. The FCC also said that the company "failed to quickly, clearly and fully notify all affected 911 call centers" following the March outage.