Poly SoundStation IP 6000 Power Supply Included SIP Conference Phone for small to medium sized rooms (Power supply included) Product Information Life-Like Call Clarity HD voice delivers high-fidelity natural audio from 220 Hz to 14 kHz, capturing deeper lows and higher frequencies of the human voice for conference calls that sound as natural as being there in person. Simple to Use Classic 12-key keypad and clear prompts on backlit LED display makes it easy to start and manage conference calls. Compatibility Compatible with a broad array of SIP call platforms to maximize voice quality and feature availaiblity while simplifying management and administration. Specifications Power - IEEE 802.3af Power over Ethernet (built in), Optional external universal AC power supply: 100-240V, 0.4A, 48V/19W. Use Cases In the Conference Room: For use in small and medium conference rooms. Poly Innovation Poly creates premium audio and video products so you can have your best meeting -- anywhere, anytime, every time. Our headsets, video and audio-conferencing products, desk phones, analytics software and services are beautifully designed and engineered to connect people with incredible clarity. They're pro-grade, easy to use and work seamlessly with all the best video and audio conferencing services. With Poly (Plantronics, Inc. – formerly Plantronics and Polycom), you'll do more than just show up, you'll stand out.