Tokyo, June 29, 2009 - ( ACN Newswire ) - NTT Communications (NTT Com) announced today that it will offer a high-standard service-level agreement (SLA) guaranteeing 100% network availability, as well as latency and packet loss levels, to customers using IPv6 services provided on NTT Com's global Tier IP backbone network beginning July 1.

If the services do not achieve the quality levels guaranteed under the SLA, NTT Com will refund all, or a pro-rated amount, of the customer's service fee.

Packet loss is guaranteed to be less than 0.3% on a calendar month basis in all four regions.

SLAs will be offered for the following three existing services:

Option service of Transit Service, IPv6/IPv4 Dual Service (provides both IPv6 and IPv4 connectivity to Tier 1 IP backbone using only one access circuit)
Option service of Collocation Transit Service, IPv6/IPv4 Dual Service (provides data center customers with IPv6 and IPv4 connectivity to Tier 1 IP backbone)
IPv6 Native Service (provides IPv6 connectivity to Tier 1 IP backbone)
Going forward, NTT Com expects to offer SLA guarantees in other major regions of the world.

NTT Com launched the world's first commercial IPv6 connectivity service in 2001. The company was presented the Best Technology Foresight-IPv6 award at the World Communication Awards in 2002. The company introduced native IPv6 and dual IPv6/IPv4 services on a global basis in 2004 and was recognized for Best New Service-IPv6/IPv4 Dual Service at the World Communication Awards the same year. NTT Com also has been named Best Wholesale Carrier by the Telecom Asia Awards in 2008, in part for offering the latest IPv6 technologies on its world-class global Tier-1 IP network.

AboutNTT Com

NTT Communications Corporation (NTT Com) provides information and communications technology (ICT) solutions worldwide with dedicated professionals stationed in 21 countries. Renowned as an IPv6 technology pioneer and managed service expert, NTT Com offers diverse high-quality IP, Web-based, and managed network solutions combining network management, security, ubiquitous, Web portals/engines, and global services. Its world-class Tier 1 Internet backbone and secure closed networks with over 98,000 MPLS ports, combined with the networks of partner companies around the world, connect more than 200 countries. The company earned non-consolidated revenues exceeding one trillion yen (about US$10 billion) in fiscal 2006 ended March 31, 2007. NTT Com started as a long-distance phone company in 1999 after the reorganization of the NTT Group, and is the wholly-owned subsidiary of NTT, one of the world's largest telecommunications companies. NTT is listed in Japan, London and New York stock exchanges. Please visit www.ntt.com .

Contact : (Mr.) Takeshi Chawanya or (Mr.) Masaru Ohshima
NTT Communications
Global Business Division
IP Business Department
Tel. +81 3 6733 8157