Polycom is a multinational corporation selling telepresence and voice communication solutions, with approximately 3,201 employees and an annual revenue of approximately $1.2 billion in 2010. The company also licences: H.264 video codecs, Siren Codecs, Session Initiation Protocol, Native 1080p high-definition cameras and displays, Native 720p and 1080p high-definition encoding/decoding, Low-latency architecture and low bandwidth utilization, Wideband advanced audio coding with low delay (AAC-LD), Multichannel spatial audio with echo cancellation and interference filters to eliminate feedback from mobile devices, Optimized environmental conditioning to provide the audio and video experience; and Inter-operation with legacy video conferencing.