Earlier this month, President Makoto Takahashi will hold a press conference at 3:30 pm for KDDI, which caused a large-scale communication failure such as au mobile phones.
We will keep you updated on the state of the press conference.
Large-scale communication failure A total of more than 30.91 million people are affected nationwide
A major communication failure occurred around 1:35 am on the 2nd of this month.
In addition to au, UQ mobile and povo calls and data communications that use the same line have become difficult to connect nationwide.
In addition to affecting a wide range of lifestyles such as the operation of AMeDAS and freight trains that use au lines to observe temperature and precipitation, some Rakuten Mobile also use au lines. Calls and data communications have become difficult to connect in the area.
The cause of the failure was the replacement of a device called a router, which was carried out during maintenance of communication equipment.
When a problem occurred during the work and the connection was restored to the original equipment, access was concentrated on a part of the equipment.
And by limiting the amount of communication in order to reduce the load on the network, it has become difficult to connect to calls and communications on smartphones and other devices.
KDDI proceeded with the restoration work, and the work was completed on the next 3 days, but even after that, the state of heavy access at some facilities could not be resolved, and the cause was identified and the communication failure was resolved 61 from the occurrence. It was 3:00 pm on the 4th, which was just over time.
After that, we checked the network and finally confirmed the full recovery after 3:30 pm on the 5th, 86 hours after the outbreak.
The company submitted a report to the Ministry of Internal Affairs and Communications on the 28th, saying that this communication failure corresponds to a "serious accident" stipulated by the Telecommunications Business Law.
According to the report, voice calls and data communications have become difficult to use for more than 61 hours, and the number of people affected has reached more than 30.91 million nationwide.
There are also issues in disseminating information to users
It has been pointed out that this large-scale communication failure did not sufficiently inform users.
The impact of the communication failure that occurred before dawn on the 2nd of this month spread nationwide, but the company announced its recovery target at 1:00 am on the 3rd, nearly a day after the outbreak.
During that time, information was provided only to the company's homepage and Twitter.
Furthermore, at the beginning, the work for recovery was not completed even after the target time had passed, and even after the work was completed, it was difficult to actually use it, causing confusion.
The final announcement of a full recovery was about 86 hours after the outbreak, just after 4 pm on the 5th.
There were a series of criticisms of these responses, and Minister of Internal Affairs and Communications Kaneko said at a press conference on the 5th of this month, "There was room to devise ways to alleviate user anxiety in terms of the content, means, and frequency of dissemination to users. Isn't it? ", And expressed the recognition that improvement was needed.
Amid the long-term effects of communication failures, it left a question as to whether the content of the transmitted information was a polite explanation that responded to the interests of users, and whether it was sufficiently communicated to a wide range of users.