Computer hardware and software for voice and video conferencing and collaboration; Computer hardware and software for telecommunications; Speakerphones; Microphones; Computer hardware for communicating audio, video, and data between computers via a global computer network, wide-area computer networks, local-area computer networks, and peer-to-peer computer networks; Telecommunications and data networking hardware, namely, devices for transporting and aggregating voice, data, and video communications across multiple network infrastructures and communications protocols; Audio and video hardware, namely, streaming audio and video transmitters and receivers; Hardware and software for establishing communication between multiple video displays via wired and wireless communication links; Software for controlling video displays; Hardware and software for reproducing audio and video content from one audio/video display on one or more other audio/video displays; Software for controlling conference room lighting; Software for controlling conference room temperature; Software for monitoring and scheduling of conference rooms