Status Pemulihan Saat Ini setelah Gempa Bumi Tohoku – Samudera Pasifik

AsiaNet 43935

TOKYO, 24 Maret /Kyodo JBN-AsiaNet/ —

Sebagai hasil dari upaya pemulihan berskala penuh siang-malam NTT Group,
anak-anak perusahaan NTT Grup terus memulihkan layanan yang berpusat di wilayah
Tohoku yang terganggu oleh Gempa Bumi Tohoku – Samudera Pasifik tanggal 11
Maret 2011 di Jepang. Upaya-upaya ini termasuk pembentukan Kantor
Penanggulangan Bencana sesuai dengan rencana operasi pencegahan bencana
berdasarkan Undang-Undang Dasar Tindakan Pengendalian Bencana. Status pemulihan
saat ini untuk layanan utama adalah sebagai berikut.

(1) Nippon Telegraph and Telephone East Corporation (“NTT East”)(Status fasilitas komunikasi saat ini)Gempa bumi dan tsunami mengganggu pasokan listrik komersial dan
menyebabkan kerusakan peralatan di sekitar 1.000 kantor pertukaran. NTT East
merespon dengan mengerahkan baterai darurat, generator listrik darurat dan
kendaraan pasokan listrik mobile untuk memasok listrik. Namun, beberapa kantor
pertukaran tetap tidak dapat beroperasi, sehingga mengakibatkan gangguan
sekitar 1.470.000 sirkuit di saluran pelanggan telepon, ISDN dan jasa FLET’s
Hikari (FTTH) pada pukul 06.00, 13 Maret (JST). NTT East, dengan bantuan
anak-anak perusahaan lain NTT Group dan perusahaan konstruksi, mengerahkan
sekitar 5.000 orang seluruhnya untuk melakukan upaya habis-habisan guna
memulihkan layanan ini. Pada pukul 13.00, 23 Maret (JST), sekitar 90 persen
kantor pertukaran telah dipulihkan seiring dengan pemulihan pasokan listrik
komersial, dengan membiarkan 93 kantor pertukaran dan sekitar 155.000 sirkuit
menunggu dipulihkan.

Unit: sirkuit
Layanan Pada pukul 13.00, 23 Maret Pada pukul 06.00,
13 Maret
Saluran pelanggan telepon
115.900 879.500
ISDN
10.200 118.600
FLET’s Hikari
28.800 475.400
Jumlah 154.900
1.473.500

Catatan: Angka-angka tidak termasuk kerusakan karena gangguan antara
pelanggan dan kantor pertukaran NTT East.
Ke-93 kantor pertukaran itu belum dipulihkan termasuk yang mengalami
kerusakan fisik, banjir atau gangguan koneksi ke jaringan transmisi backbone di
daerah-daerah yang terkena dampak gempa bumi dan/atau tsunami, serta yang
terletak di wilayah luar batas sekitar pembangkit listrik tenaga nuklir yang
tidak berfungsi. Karena hal ini, pemulihan sebagian besar kantor pertukaran ini
diperkirakan akan memerlukan banyak waktu. (Layanan telepon umum gratis)Untuk memberikan alat-alat komunikasi kepada orang-orang yang terkena
gempa bumi dan akibatnya, NTT East telah memasang 2.076 telepon umum khusus di
615 lokasi yang dapat digunakan secara gratis (pada siang, 23 Maret (JST)).
Juga, telepon umum yang ada di enam prefektur yang berlokasi di wilayah Tohoku
(Aomori, Iwate, Miyagi, Akita, Yamagata dan Fukushima) serta di Prefektur
Ibaraki dapat digunakan secara gratis.(Panggilan Pesan Darurat Bencana)Sejak terjadinya gempa bumi, NTT East telah menyediakan jasa konfirmasi
keselamatan “Panggilan Pesan Darurat Bencana 171” dan “Papan Pesan Broadband
Darurat Bencana (Web 171)” yang akan digunakan oleh mereka yang terkena dampak
gempa bumi. Pada pukul 1.00 tanggal 23 Maret (JST), “Panggilan Pesan Darurat
Bencana 171” telah diakses kira-kira 3.093.400 kali secara kumulatif dan “Papan
Pesan Broadband Darurat Bencana (Web 171)” kira-kira 236.400 kali secara
kumulatif.

(2) NTT DOCOMO, INC. (“DOCOMO”)(Fasilitas komunikasi)Menyusul gempa bumi dan tsunami, layanan mobile telah terganggu di sekitar
6.720 BTS pada pukul 17.00 tanggal 12 Maret (JST). Upaya-upaya pemulihan telah
mengurangi angka tersebut menjadi sekitar 840 per pukul 13.00 tanggal 23 Maret
(JST).

Unit:
base station
Daerah Pada pukul 13.00, 23 Maret Pada pukul
17:00, 12 Maret
Tohoku
820 4900
Kanto-Koshinetsu
17 1820
Total
840 6720

Catatan: Jumlah aktual ditampilkan untuk angka-angka yang sama dengan atau
kurang dari 20. Angka-angka yang lebih dari 20 telah dibulatkan ke sepuluh
terdekat.(Bantuan di daerah-daerah tanpa sinyal ponsel)Pada pukul 1:00 tanggal 23 Maret (JST), DOCOMO telah mengambil
langkah-langkah berikut untuk menyediakan akses telekomunikasi.
– Sewa ponsel satelit (830 handset)
– Sewa ponsel (1.184 handset)
– Penyebaran kendaraan base mobile station (30 kendaraan)
– Penyebaran kendaraan pasokan listrik mobile (30 kendaraan)
– Penyebaran pembangkit listrik mobile (400 generator)
– Pemasangan stasiun pengisian ponsel gratis (100 lokasi)(Layanan Papan Pesan Bencana)Segera setelah gempa bumi, DOCOMO mulai menyediakan layanan “Papan Pesan
Bencana”. Layanan ini telah diakses kira-kira 3.661.400 kali secara kumulatif
per pukul 00:00 tanggal 23 Maret (JST).

(3) NTT Communications Corporation (“NTT Com”)(Jasa telekomunikasi)Beberapa layanan mengalami gangguan menyusul gempa bumi dan/atau tsunami,
tetapi telah pulih sebagai berikut, pada pukul 17:00, 22 Maret (JST).

Unit: sirkuit
Layanan Pada pukul 17:00, 22 Maret Pada pukul
20:30, 12 Maret
IP-VPN, e-VLAN, dll
2.300 15.000

Kabel bawah laut yang menghubungkan Jepang dengan Amerika Serikat dan
negara-negara lain di Asia sebagian telah rusak, namun NTT Com telah
menggunakan rute kabel cadangan lain untuk mempertahankan layanan yang tak
terganggu guna menghindari dampak besar terhadap layanan komunikasinya di luar
negeri. Untuk pusat data NTT Com, dipastikan tidak ada kerusakan.

Tentang Nippon Telegraph and Telephone Corporation
Silakan kunjungi www.ntt.co.jp/index_e.html

Sumber: Nippon Telegraph and Telephone Corporation

Kontak:
Tenmin Yoshiara
Kantor Hubungan Masyarakat
Nippon Telegraph and Telephone Corporation
Tel: +81-3-5205-5550
e-mail: ntt-cnr@ml.hco.ntt.co.jp

Current Status of Restoration Following Tohoku – Pacific Ocean Earthquake

TOKYO, Mar. 24 /Kyodo JBN-AsiaNet/ —

     As a result of NTT Group’s full-scale, round-the-clock recovery efforts, NTT Group companies have been steadily restoring services centered in the Tohoku region that were disrupted by the March 11, 2011 Tohoku – Pacific Ocean Earthquake in Japan. The efforts have included establishment of Disaster Countermeasures Office in accordance with disaster prevention operation plans based on the Basic Act on Disaster Control Measures. The current status of restoration for major services is as follows.

     (1) Nippon Telegraph and Telephone East Corporation (“NTT East”)
     <Current status of communication facilities>
     The earthquake and tsunami disrupted commercial power supply and caused equipment failure in approximately 1,000 exchange offices. NTT East responded by deploying emergency batteries, emergency power generators and mobile power-supply vehicles to supply power. However, some exchange offices remained inoperable, resulting in the disruption of a total of approximately 1,470,000 circuits in telephone subscriber lines, ISDN and FLET’S Hikari (FTTH) services as of 6:00 a.m., March 13 (JST). NTT East, with the help of other NTT Group companies and construction companies, mobilized some 5,000 people in total to make an all-out effort to restore these services. By 1:00 p.m., March 23 (JST), approximately 90 percent of the exchange offices had been restored along with the recovery of commercial power supply, leaving 93 exchange offices and approximately 155,000 circuits waiting to be restored.

                                                                                                           Unit: circuits
Service                As of 1:00 p.m., March 23   As of 6:00 a.m., March 13
Telephone subscriber lines               115,900                          879,500
ISDN                                                              10,200                          118,600
FLET’S Hikari                                             28,800                         475,400
Total                                                            154,900                     1,473,500

     Note: Figures exclude failures due to disruptions between customers and NTT East exchange offices.

     The 93 exchange offices yet to be restored include those with physical damage, flooding or disruption of connection to backbone transmission lines in areas severely impacted by the earthquake and/or tsunami, and those located in the off-limits area surrounding the malfunctioning nuclear power plant. For these reasons, the recovery of most of these exchange offices is expected to require a significant amount of time.

     <Free public phone service>
     To provide people affected by the earthquake and its aftermath with communication means, NTT East has installed 2,076 special public telephones in 615 locations available for use free of charge (as of noon, March 23 (JST)). Also, existing public telephones in the six prefectures located within the Tohoku region (Aomori, Iwate, Miyagi, Akita, Yamagata and Fukushima) as well as in Ibaraki Prefecture may be used free of charge.

     <Disaster Emergency Message Dial>
     Since the earthquake, NTT East has been providing safety confirmation services “Disaster Emergency Message Dial 171” and “Disaster Emergency Broadband Message Board (Web 171)” to be used by those affected by the earthquake. As of 1:00 p.m. on March 23 (JST), “Disaster Emergency Message Dial 171” had been accessed approximately 3,093,400 times cumulatively and “Disaster Emergency Broadband Message Board (Web 171)” approximately 236,400 times cumulatively.

     (2) NTT DOCOMO, INC. (“DOCOMO”)
     <Communication facilities>
     Following the earthquake and tsunami, mobile services had been disrupted at approximately 6,720 base stations as of 5:00 p.m. on March 12 (JST). Recovery efforts had reduced the figure to approximately 840 as of 1:00 p.m. on March 23 (JST).
 
                                                                                                Unit: base stations
Region            As of 1:00 p.m., March 23       As of 5:00 p.m., March 12
Tohoku                                                  820                                               4,900
Kanto-Koshinetsu                               17                                                1,820
Total                                                      840                                                6,720

     Note: Actual amounts are shown for figures equal to or less than 20. Figures more than 20 have been rounded to the nearest ten.

     <Assistance in areas without mobile phone reception>
     As of 1:00 p.m. on March 23 (JST), DOCOMO had taken the following measures to provide telecommunication access.
     – Rental of satellite mobile phones (830 handsets)
     – Rental of mobile phones (1,184 handsets)
     – Deployment of mobile base station vehicles (30 vehicles)
     – Deployment of mobile power-supply vehicles (30 vehicles)
     – Deployment of mobile power generators (400 generators)
     – Installation of free mobile-phone charging stations (100 locations)

     <Disaster Message Board service>
     Immediately after the earthquake, DOCOMO started providing “Disaster Message Board” service. The service had been accessed approximately 3,661,400 times cumulatively as of 00:00 a.m. on March 23 (JST).

     (3) NTT Communications Corporation (“NTT Com”)
     <Telecommunication services>
     Some services were experiencing disruptions following the earthquake and/or tsunami, but have been recovered as follows, as of 5.00 p.m., March 22 (JST).

                                                                                                              Unit: circuits
Service              As of 5:00 p.m., March 22     As of 8:30 p.m., March 12
IP-VPN, e-VLAN, etc.                     2,300                                         15,000

     Submarine cables connecting Japan with the United States and other parts of Asia have been partially damaged, but NTT Com has been using other backup cable routes to maintain uninterrupted services to avoid any major impact on its overseas communication services. As for NTT Com’s data centers, no damage was confirmed.
     About Nippon Telegraph and Telephone Corporation
     Please visit www.ntt.co.jp/index_e.html
     Source: Nippon Telegraph and Telephone Corporation

     Contact:
     Tenmin Yoshiara
     Public Relations Office
     Nippon Telegraph and Telephone Corporation
     Tel: +81-3-5205-5550
     e-mail: ntt-cnr@ml.hco.ntt.co.jp