Nortel and Microsoft have released four new joint unified communications products.
The joint products include the Converged Office unified communications suite, Multimedia Conferencing and systems for branch offices and hosted service providers.
They build on the firms' Innovative Communications Alliance, which began less than two years ago.
The pair say they have sold more than 600 of their joint unified communications products since the formation of the alliance.
Ruchi Prasad, vice-president and general manager for the Innovative Communications Alliance at Nortel, said, "With these solutions, enterprises can now choose to deploy unified communications via a customer premise solution, managed service system, or a hybrid of the two, helping accelerate the pace of unified communications adoption."