Aftershocks are still preventing Japan's telecommunication companies from repair undersea cables, shop-worn in the new trembler and tsunami.
To revive services, many providers have rerouted traffic to backup cables.
KDDI, Japan's second-largest telecoms operator, mentioned it will send out a liner versed with remotely-controlled robots as shortly as the belligerent is still.
The robots can dive to a height of 2,500m to repair the shop-worn cables - a charge that might take months to complete.
In the mean-time, there is sufficient excess in the telecommunications infrastructure joining Japan to the rest of the world to keep the nation connected.
KDDI orator Shin-ichiro Itoyama, vocalization by phone from the company's domicile in Tokyo, mentioned that the low H2O robots had formerly usually been used to lay cables on the seabed and not for any leading repairs as there had never been ample damage from previous earthquakes.
More than 5,400 people died in Friday's 9.0-magnitude upheaval - the many absolute ever to strike Japan - and the indirect tsunami.
Some 9,500 people are still missing.
Aftershock hits
At a point, during the interview, Mr Itoyama broke-off: "Oh wait for a second, the belligerent is jolt again," he said.
Powerful aftershocks go on to clap the ravaged country, reaching magnitudes of 6.0 and higher.
Mr Itoyama mentioned he was a of the couple of KDDI employees left working in the office. The majority were told to stay at home as long as the aftershocks last.
He explained that it was really tough to evaluate the damage to the cables in the Pacific as many were buried in the seabed in the areas many affected by the disaster, inclusive Ibaraki and Miyagi Prefectures.
Although there were serious service disruptions correct after the trembler and tsunami, with communications between Japan and US really bad affected, that had given been restored, he added.
"On Mar 15, you solved all the problems by means of using other cables and fill-in systems and you have recovered all the services between Japan and US," he said.
Mr Itoyama updated that the traffic had been to some extent re-routed using the Russia-Japan line network operated by KDDI and Russia's Rostelecom.
KDDI is not the usually telecommunications firm in Japan really bad affected by the disaster.
The country's greatest operator, NTT, was strike hard as well.
"About half a million of write circuits are down," Kazuhiro Gomi, the head of the US bend of NTT, told the BBC.
"Nowadays, the Internet is as critical as write lines - and about 150,000 internet circuits are down."
Mr Gomi updated that mobile phone services have moreover suffered, notably in the north-east coastal area.
Other companies with undersea cables in the waters around Japan add Australian user Telstra International, Taiwan's largest phone user Chunghwa Telecom, and universal telecommunications service provider Pacnet, headquartered in Singapore and Hong Kong.
While some of them say their services have been restored, others are still struggling.
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