Most of the phones that we offer have the ability to bridge together two separate callers into one conference (the Polycom® 450, 550, 560, 650, 670 conference in three other users using the Polycom® Productivity Suite). This hard cap is the most important distinction between the phones’ conferencing abilities and the Star2Star Conference Bridges, which have a much higher limit on attendance) see Advanced System Configuration Guide for details). For the conference capabilities of each individual phone type, please refer to the Star2Star Phone and Features Guide.
