POLYCOM 2200-15600-001 Wired Voice Conferencing Device Additional Features: Polycom HD Voice technology for high-fidelity calls at up to 14 kHz – An industry first, an IP conference phone that sounds as natural as being there The unique Polycom Acoustic Clarity technology – delivering the best IP conference phone experience without compromise 12-foot (4-meter) microphone pickup – ideal for small to midsize conference rooms. Add even greater range with optional expansion microphones Strong, robust SIP software – leveraging the most advanced SIP endpoint software in the industry, with advanced call handing, security, and provisioning features Robust VoIP interoperability – Compatible with a broad array of SIP call platforms to maximize voice quality and feature availability while simplifying management and administration Resists interference from mobile phones and other wireless devices while delivering clear voic...