WILLCOM, is the only service provider of PHS, called "AIR-EDGE", in Japan.  They offer wireless data communication and VoIP services through its independent network with approximately 160,000 PHS cell stations across Japan.  The key feature of the service is that users can enjoy up to 800kbps of stable data communication service with only a small fixed charge of JPY3, 880 ($40) per month.

In order to provide reliable and excellent service all-the-time across the country, WILLCOM deployed the Network Time Machine Portable to conduct data analysis and performance verification to ensure smooth service delivery during network expansion.  When service problem occurs, the NTM's forensic analysis is used for back-in-time analysis to get to root cause quickly.

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