• Meridian PBX Conferencing Feature - Add up to 5 conference endpoints with the Conference key on your SoundStation Premier 550D dial pad*
• Direct Connect - Connects directly to any Meridian voice port that supports Meridian digital telephone sets (except MBS CENTREX ® phone sets).
• Full-Duplex Conferencing Performance - Polycom's Acoustic Clarity Technology™ lets you talk as naturally as speaking face-to-face
• Expandable for larger rooms - Provides two ports for use with expandable microphones (microphones not included)
• Privacy Phone - Attach a Meridian telephone to the auxiliary phone jack and lift the handset during a conference call to "take the call private," muting all system microphones and the speaker
• Compatible ONLY with Nortel Meridian systems
• Not compatible with Norstar 616, 824, Plus, CICS, or MICS

* Dependent upon Meridian configuration