- Polycom HD Voice technology for high-fidelity calls at up to 22 kHz An industry first a VoIP conference phone that sounds as natural as being there.N/A- Patented Polycom Acoustic Clarity technology delivers the best conference phone experience without compromise.N/A- 20-foot (7-meter) microphone pickup range and even greater distances with optional expansion microphones or multi-unit connectivity to reach all corners of the conference room.N/A- Flexible configuration options Multi-unit connectivity expansion microphones and integration with Polycom HDX solutions to meet the needs of many different types of rooms.N/A- Ideal VoIP conferencing platform leveraging the most advanced SIP conferencing endpoint software in the industry with advanced call handing security and provisioning features.N/A- Robust VoIP interoperability Compatible with a broad array of SIP call platforms to maximize voice quality and feature availability while simplifying management and administration.N/A- Resists interference from mobile phones and other wireless devices while delivering clear VoIP conferencing with no distractions.N/A- Large high-resolution display with XHTML microbrowser enables new applications that make conference calling easier and more functional.N/A- Applications Port connects to mobile phones for dialing from rooms without an analog phone line and connects to a PC to become a high-quality conference phone for Internet calling.