TOKYO and MOSCOW, July 3 /PRNewswire/ --

TransTeleCom Company CJSC (TTK), Russia's leading telecommunications
backbone operator and NTT Communications Corporation (NTT Com), announced on
July 3 that the Hokkaido-Sakhalin Cable System (HSCS), which directly links
the two companies' telecom networks via an undersea cable between Nevelsk,
Sakhalin in Russia and Ishikari, Hokkaido, Japan, began commercial operation
on July 3.

The two companies jointly started to construct the fiber-optic submarine
cable HSCS in 2007 and the work was completed in December 2007. HSCS measures
570 km in length and has a capacity of 640 Gbps. Its startup gives NTT Com
the shortest route between Japan and Europe, compared with existing cable
routes through southern Asia and the United States, by connecting the cable
to the TTK's extensive backbone network in Russia, which exceeds 55,000 km.

The HSCS route will enable NTT Com to provide the following
high-reliability, high-quality services:

-Global Leased Line

NTT Com will provide additional offering in Arcstar Global Leased Line
Service utilizing the new route and taking orders starting on July 3. It is
estimated to shorten the latency within the company's backbone by 20 to 30%
compared to the existing routes.

-Global IP-VPNs

The HSCS route will be added to the backbone of NTT Com's secure,
scalable Arcstar Global IP-VPN Service (MPLS) beginning August 2008.

-Transit Service

The HSCS route will be added to NTT Com's global IP Tier 1 network
covering Asia-Pacific Europe and North America, with connection to major ISPs
worldwide, beginning on July 3.

NTT Communications Corporation

NTT Com delivers high-quality voice, data and IP services to customers
around the world. The company is renowned for its diverse information and
communication services, expertise in managed networks, hosting and IP
networking services, and industry leadership in IPv6 transit technology. The
company's extensive global infrastructure includes Arcstar(TM) private
networks and a Tier 1 IP backbone (connected with major ISPs worldwide), both
reaching more than 150 countries, as well as secure data centers in Asia,
North America and Europe. NTT Com is the wholly owned subsidiary of Nippon
Telegraph and Telephone Corporation, one of the world's largest telecoms with
listings on the Tokyo, London and New York stock exchanges. Please visit
http://www.ntt.com/index-e.html .

About TransTeleCom Company

TransTeleCom Company CJSC (TTK) was founded in 1997. Its main shareholder
is "Russian Railways". TTK operates and services the largest fiber network in
Russia, which is more than 55,000 km long. The network is laid along the
country's railways, has more than 1,000 access nodes in all regions of Russia
and connects Europe and Asia. Being one of the leading telecommunication
operators, the company ensures 45% of the rent of National Private Lines,
occupies 46% in the segment of trunk Internet access and 34% in IP VPN
market. Consolidated income of TTK group companies in 2007 made 24,1 billion
rubles, and the profit amounted to 2.6 billion rubles, which exceeds the same
index of 2006 by 18%.

Contact:
    NTT Communications Corporation
    Global Business Division
    (Ms.) Shihoko Kato or (Mr.) Go Akimoto
    Tel. +81-3-6800-4500
    E-mail: marketing-gl@ntt.com

    TransTeleCom Company
    Ilya S. Fabrichnikov
    Tel. +7-495-784-6670 ext. 7371
    (Available for English or Russian only)



Web site: http://www.ntt.com/index-e.html