SoundStructure C-Series Acoustic challenges conquered SoundStructure delivers an immersive audio experience to acoustically challenging environments such as large boardrooms, classrooms and training facilities. Advanced design and custom configuration capabilities allow you to seamlessly integrate with video and voice conferencing solutions. Features: Unrivaled Sterio Acoustic Echo Cancellation (AEC) – The only product with both monaural and stereo echo cancellation from 20Hz to 22 kHz – AEC with no compromises for more immersive meetings Breakthrough feedback elimination – Enables more flexible microphone, talker, loudspeaker placements and speech reinforcement delivering audio where you want it Polycom OBAM™ matrix architecture – Connect multiple units together to create larger systems without the limitations of traditional bussing All conferencing features available on all inputs – Eliminate the worries of running out of microphone inputs, since every feature is available on all inputs Gain sharing automatic microphone mixer – Improved automixer experience ensures smoother transitions and robust performance in a variety of operating environments Provide expanded functionality and investment protection – Use modular single or dual-line PSTN, or VoIP telephony cards Fully digital Polycom RealPresence Group Series integration – Add powerful, configurable audio to your HD video solution RealPresence Touch – Provides a simple-to-use interface for volume control, muting, and dialing of SoundStructure. Polycom Ceiling Microphone Arrays – Compatible with both Polycom Ceiling Microphone arrays and traditional analog microphones (each microphone array) Push to talk microphones and other applications – Gain flexible support with logic inputs (contact closures) and outputs Powerful events programming – Customize system behavior with the RealPresence Touch, RealPresence Group Series solutions, IR remotes, and more Password protection – Prevents unauthorized users from accessing, controlling or making changes to the system