Some of them are still remains to be restored because of being in mountainous areas or disruptions of roads making it difficult to access in the first place or inside tunnels. For the network restoration we used optical fiber or replaced the optical fiber and used stopgap optical fiber. We also transmitted signals from large zones using a large zones scheme from mountain top areas, and also we used micro tunnel wave transmission and satellites in some cases.Page 5, we have some more details. This is how we repaired our transmission lines using optical fiber. Page 6 is about the restoration using large zone scheme. And page 7 is the restoration using microwave transmission. Page 9 is the restoration using satellites. With all these measures, we have nearly completed the restoration of the service areas. The other factor that we had experienced was the restoration effort for the areas close to the Fukushima Daiichi Nuclear power plant. 68 stations within the 38 kilometer radius were disrupted. Out of those 68, we’ve already restored 51 base stations. And the efforts that had been employed for the restoration are explained on page 10.
NTT DoCoMo's CEO Discusses F4Q 2011 Results - Earnings Call Transcript
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