- Poly IP conference phone- Unparalleled clarity – Poly HD Voice makes your conference calls sound amazingly clear and life-like- More productive conference calls – Patented Poly Acoustic Clarity™ technology delivers the best conference phone experience with no promises- Ideal for smaller rooms – 7-foot microphone pickup and a small footprint designed for executive offices and smaller conference rooms with up to 6 participants- Advanced IP feature support – the most feature-rich family of IP conference phones available with advanced call handling security and provisioning features- Robust interoperability – patible with a broad array of SIP call platforms to maximize voice quality and feature availability while simplifying management and administration Power- IEEE 802.3af Power over Ether (built in)- Optional external universal AC power supply kit: 100-240V 0.4A 48V/19W Display- Size (pixels): 248 x 68 (W x H)- White LED backlight with custom intensity control Keypad- Standard 12-key keypad- Context-dependent soft keys: 4- On-hook/Off-hook redial mute volume up/down- 5-way navigation- MenuAudio Features- Loudspeaker- Frequency: 250 – 7000 HZ- Volume: Adjustable to peak volume 84 dB at 1/2 meter distance- Voice activity detection- Comfort noise fill- DTMF tone generation / DTMF event RTP payload- Low-delay audio packet transmission- Adaptive jitter buffers- Packet loss concealment- Acoustic echo cancellation- Background noise suppression- Supported Codecs: G.711 (A-law and ?-law) G.729a (Annex A B) G.722 iLBCCall Handling Features- Shared call / bridged line appearance- Busy Lamp Field (BLF)- Distinctive ining call treatment / call waiting- Call timer- Call transfer hold divert (forward) pickup- Called calling connected partyrmation- Advanced Local three-way conferencing (conference join split hold resume)~~- One-touch speed dial redial- Call waiting- Remote missed call notification- Automatic off-hook call placemen