The companies said they plan to begin trials of the integrated services in the spring of 2006 and eventually offer them to business customers.
Some of these services are Microsoft's Solution for EnhancedServices, Softbank BB's broadband VoIP services, and Japan Telecom's network infrastructure and management offerings, the companies said. Japan Telecom is a subsidiary of Softbank BB.
It's not the first deal Microsoft has struck to try to tap into the fast-growing VoIP market. In September, . And in December, Microsoft said its forthcomingin conjunction with a nonexclusive deal with MCI.
Microsoft's Solution for Enhanced VoIP Services includes hosted versions of several Microsoft communication software packages, including Exchange Server 2003, Office Live Communications Server 2005 and Windows SharePoint Services.