ＫＤＤＩ障害、３０９１万人に影響　過去最大規模、報告書提出―総務省、行政指導へ

　ＫＤＤＩは２８日、今月上旬に起こした通信障害が電気通信事業法上の「重大な事故」に当たるとして、総務省に報告書を提出した。障害の原因は、機器のメンテナンス時の設定ミスと判明。合計で延べ３０９１万人以上が通話やデータ通信を利用しづらくなり、過去最大規模の障害となった。同省は報告書を精査した上で、来月にも行政指導を行う方針。
　報告書によると、ＫＤＤＩと子会社の沖縄セルラーを合わせ、音声通話で約２３１６万人、データ通信で７７５万人以上に影響した。２日午前１時３５分から４日午後３時までの６１時間２５分利用しづらい状況となった。（2022/07/28-19:54）

KDDI Corp. submitted a report on its major network disruption earlier this month to the communications ministry on Thursday, saying that over 30.91 million users in total were affected across Japan.
   It was one of the largest network disruptions ever in the country, regarded as a serious incident under the telecommunications business law.
   According to the report, the disruption affected voice calls by some 23.16 million users and data communications by over 7.75 million users. The situation continued for 61 hours and 25 minutes from 1:35 a.m. on July 2 to 3 p.m. on July 4.
   As the cause of the disruption, the report identifies a setting error during router maintenance work. As many users tried to get reconnected to the network, the major telecom company restricted data flows in order to reduce the load on the network.
   KDDI initially said the disruption affected up to 39.15 million subscribers, but has revised the figure based on surveys later.