- High-quality, full duplex sound enables participants to speak and listen at the same time without cutting in and out - Distributed Echo Cancellation effectively eliminates echo- Noise cancellation removes background noises from fans or HVAC systems- Automatic Level Controls keep participants\' audio balanced and consistent- First-mic priority eliminates hollow "tunnel" sound by activating only the microphone closest to the person speaking- Three microphones in each phone unit provide 360 degree audio pickup- Comes with two phone units and can be expanded up to four complete linked phones- Linked phones provide multiple loudspeakers, multiple microphones, and multiple dial pads for unrivaled room coverage- Connects to a wide variety of SIP platforms- VLAN tagging allows for bandwidth management and secure separation of voice and data networks- 3-Way calling allows for ad-hoc conferences without the need for conference bridge- TLS and SRTP encryption - secures voice communications over the network- Field upgradeable for easy access to latest features- User-friendly telephone style controls- Selectable ring tones- Linked MAX phones can be operated using the dial pad of any phone - dialing, mute, volume controls, etc. CO91015837000