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Japan's KDDI suffered a large-scale communication failure, and it was "disconnected" in Japanese recently 1/3.

Japan's KDDI suffered a large-scale communication failure, and nearly 1/3 Japanese "lost contact". It seems that KDDI's network interruption began in the early hours of last Saturday and continued until the morning of this Monday, during which the degree of network interruption was good and bad. Japan's KDDI suffered a large-scale communication failure, and the Japanese were "disconnected" nearly13.

KDDI in Japan suffered a large-scale communication failure. Recently 1/3 Japan "disconnected" 1 Monday (July 4th), the share price of KDDI, Japan's second largest telecom operator, once fell by nearly 4% after the company experienced the biggest communication failure in history last weekend, which caused 39 1.5 million mobile phone users in Japan to fail to communicate normally.

Japan's KDDI recently announced that as of 7: 00 a.m. local time on the 4th, the data communication problem interrupted by its national network has been basically solved.

The company completed the repair work on Sunday night, but the traffic was still limited, and the difficulty of voice call connection continued until it was confirmed that the service could be fully restored.

The communication interruption began at about 1: 35 local time on Saturday morning. According to KDDI, as many as 3910.5 million users' communication connections were affected by this interruption, and the voice calls and data communication of the company's mobile communication services au, UQ Mobile and povo 2.0 were affected.

Public utilities such as banks, postal services, transportation and meteorological bureau are also affected to varying degrees. Passengers were once unable to use IC recharge cards on buses in downtown Tokyo, and a regional bank said that ATMs outside its branches could not be used either.

According to KDDI, the failure was due to regular maintenance, and there was a problem in replacing the equipment related to the voice call service. Although the emergency repair work was carried out, there was a system cascading failure, which made it difficult to use the telephone and data communication services normally.

At Sunday's press conference, Gao Qiao, president of KDDI, apologized: "As a communication industry that provides support and stable services to social infrastructure, we must deeply reflect." He also called it "the biggest failure in KDDI history".

On Sunday, Japanese Minister of General Affairs Jin Gongzhi said at a press conference that according to the report submitted by KDDI, the communication failure was a major accident and necessary measures would be taken against the company after receiving the official report. Regarding the failure that caused great chaos to the society, the Ministry of Internal Affairs and Communications, which is in charge of supervision, will explore administrative guidance on the basis of seriously investigating KDDI's response in the future.

Japan's Telecommunications Enterprise Law stipulates that more than 30,000 people can't dial emergency numbers such as 1 10 and19 for more than 0 hours due to service interruption, and the government can characterize this incident as a serious accident.

KDDI's share price once fell to 4 145 yen, a drop of 3.9%. As of midday in the local market, KDDI recently reported 4236 yen.

Japan's KDDI suffered a large-scale communication failure, and nearly 1/3 Japanese "lost contact". According to foreign media reports, last weekend, KDDI, a Japanese telecom operator, suffered the worst network interruption in history, resulting in nearly 40 million customers unable to use mobile services.

It seems that KDDI's network interruption began in the early hours of last Saturday and continued until the morning of this Monday, during which the degree of network interruption was good and bad.

KDDI blamed the network outage on "equipment failure", saying that as part of routine maintenance, employees of the company made mistakes when replacing the router of the core network, which made it impossible to connect voice calls. Although this problem is being solved, KDDI said that its network has experienced extremely high traffic, which further affected the service quality of customers.

KDDI is still studying the exact cause of the interruption.

During the period of network interruption, KDDI advises customers to use fixed telephones and public telephones to obtain emergency communication services.

For the new Japanese government led by kishida fumio, this retrogressive solution may be a stain. In the past year, the kishida fumio government has been trying to rapidly realize Japanese digitalization, including replacing fixed telephones and public telephone booths with more advanced technologies.

This transition to digital technology and the elimination of traditional analog solutions are taking place in many countries, and similar problems have been confirmed in some cases. For example, in Britain, BT was attacked earlier this year for dismantling public telephone booths and fixed telephones, when a storm interrupted the mobile network and thousands of customers could not use emergency services.

Since then, British operators have suspended the dismantling of fixed telephones in rural areas and adopted more flexible deployment methods in these more vulnerable areas.

In contrast, the situation in Japan is unlikely to become so serious. The new regulations issued by kishida fumio government mean that at least one telephone booth should be deployed in urban areas and at least one telephone booth should be deployed every two square kilometers in rural areas, because they can provide reliable communication in case of natural disasters.

Nevertheless, Japan's heavy dependence on mobile communication has been fully reflected in this network interruption. The interruption not only directly affects customers, but also affects other services such as parcel delivery, weather forecast and ATM, which cannot operate without mobile data transmission.

The Japanese government characterized the network interruption as a "serious incident". Seiji Muhara, deputy chief cabinet secretary, told reporters that he hoped KDDI would give a comprehensive explanation and might compensate the seriously affected customers.

He said: "As an important infrastructure for social and economic activities, it is very regrettable that mobile phone services cannot be used for such a long time."

Japan's KDDI suffered a large-scale communication failure, and nearly 1/3 Japanese "lost contact". According to comprehensive Japanese media reports, on the 4th local time, Japan's KDDI Company announced that as of 7: 00 a.m., data communication services such as the Internet had "basically resumed nationwide". KDDI's sudden communication failure on 22nd led to the continuous unsmooth mobile phone calls and data transmission throughout the country, which had a great impact on infrastructure such as mobile phones, logistics and settlement.

According to reports, the fault lasted more than 48 hours, and as many as 3910.5 million lines were affected, of which 35.8 million were personal and corporate mobile phone lines. In addition, there are 6.5438+0.4 million lines for cheap smart phone enterprises and 6.5438+0.5 million lines for equipment in logistics and finance industry.

The fault spread to Japanese banks, aviation, logistics, automobiles, electric power and other industries, and the delivery status system could not be updated and the ATM machine could not be used.

The Japan Meteorological Agency also said that due to unstable communication, hundreds of meteorological observation systems in Japan could not transmit information. Fortunately, it did not have a significant impact on weather and typhoon forecast.

It is reported that the accident occurred during the routine maintenance of the equipment. During the repair work, other system chains failed, making it difficult to use telephone and data communication services.

According to Japanese media, the duration and number of people affected by this failure exceeded the mobile phone communication failure of NTT Ducomo Company at the end of last year, which was the largest in the history of mobile phone operators.

Japanese Minister of General Affairs Kim Kyung-woo said at a press conference on the 3rd that the mobile communication service is an important infrastructure of national life and social economy, and it is "very regrettable" to fall into a state where many users find it difficult to use it for a long time.

Jin Gonggong said that the incident was a "major accident" as stipulated in the Law on Electrical and Communications, and criticized KDDI's response as "insufficient from the user's point of view".