AT&T has encountered sporadic outages over the past few days, including a temporary 911 outage in some parts of the southeastern United States. Although outages happen from time to time, nationwide, prolonged outages are exceedingly rare.
Although AT&T provided no official reason for the outage, the issue appears to be related to how cellular services hand off calls from one network to the next, a process known as peering, according to an industry source who spoke on the condition of anonymity.
There’s no indication that Thursday’s outage was the result of a cyberattack or other malicious activity, the industry source said.
Verizon believes the nationwide outage involving AT&T customers “is close to being resolved,” according to Richard Young, a Verizon spokesperson.
Carriers are notoriously mum about why their networks go down. In the past, there have been construction accidents that have cut fiberoptic cables, incidents of sabotage or network updates filled with bugs that became difficult to roll back.
Sumber: www.cnn.com
