Credit: Edgar Cervantes / Android Authority
- The FCC’s report on AT&T’s network outage this February reveals that it blocked over 92 million voice calls, including over 25,000 emergency calls to 911.
- The outage was triggered by an error in a network expansion update, but the FCC notes it was the result of several issues in AT&T’s internal processes.
- The FCC Enforcement Bureau is now investigating the findings for potential violations of FCC rules.
The FCC Public Safety and Homeland Security Bureau has published a report highlighting the cause and extent of the AT&T network outage that impacted all of the carrier’s wireless customers in February this year. The nationwide outage blocked over 92 million phone calls, including more than 25,000 emergency calls to 911.
FCC’s report states (via ArsTechnica) that the outage occurred shortly after AT&T implemented a network expansion update with an equipment configuration error. The FCC found that the error caused AT&T’s network “to enter ‘protect mode’ to prevent impact to other services, disconnecting all devices from the network, and prompting a loss of voice and 5G data services for all wireless users.”