PENNSYLVANIA (WENY) -- The 911 outage that occurred in Pennsylvania in early July was caused by a defect in the operating system, according to officials.

On July 11, the Commonwealth suffered intermittent outages with the 911 system.

The problems with the system were fixed the next day.

“As soon as the intermittent outages started, our vendors and partner public safety organizations began to investigate the cause and take steps to resolve the issue,” said PEMA Executive Deputy Director Jeff Boyle. “We activated the Emergency Alert System and issued Wireless Emergency Alerts as a precautionary measure to notify everyone in Pennsylvania of the issue and to follow county-based back up plans should they not be able to reach the 911 centers by calling the traditional three-digit phone number.”

The Pennsylvania Emergency Management Agency says the defect caused incoming 911 calls to not get sent to the appropriate 911 call center. Officials say the issue was not the result of a cyberattack.

PEMA says you should know your local call center's non-emergency contact number, in the event you can't reach them when calling 911. The non-emergency contact number for Tioga County, Pa. is 570-724-4666, while the non-emergency contact number for Bradford County is 570-265-9101.

Officials are planning to release a more detailed analysis of this issue and the steps that are being taken to fix it shortly.