Polycom CX300 VoIP Phone for Microsoft Lync Brand New Includes One Year Warranty Item # 2200-32500-025 / 2200-32530-025 The Polycom CX300 VoIP phone for Microsoft Lync significantly enhances the overall communication experience by combining high definition and high fidelity audio for crystal clear conversations. It has full Integration with Microsoft Windows XP and Microsoft Windows Vista™, it also features full duplex, hands-free speakerphone which provides best possible voice call quality ever with natural conversations without echoes or feedback. The CX300 features Voice messaging indicator along with Off hook indicator. Enjoy the ease of call clarity with this amazing VoIP phone. Other feature includes redial key, flash key, delete key, mute, volume control, speakerphone indicator and call forwarding indicator. CX300 Features Corded Voice Over IP Phone Full Duplex Quality SpeakerPhone Message Waiting Indicator Redial Flash Volume Control Call Forwarding Mute