scope:

This Recommendation provides definitions, use cases and functional requirements for telepresence systems. A telepresence system is a set of functions, devices and network elements which are able to capture, deliver, manage and render multiple high quality interactive audio and video signals in a telepresence conference. An appropriate number of devices (e.g., cameras, screens, loudspeakers, microphones, codecs, multipoint control units (MCUs), PCs) and environmental characteristics are used to establish telepresence. Specific requirements include those for:

- User experience

- Control, including:

• Call control functions
• Media control functions
• Conference control functions
• Collaboration functions

- Inter-operability

- Network

- Security

The requirements in this Recommendation relate to functions that a telepresence system is required to support. That is, a telepresence system should be able to provide the functions in its design or by utilizing existing mechanisms. Recommended requirements do not mandate the implementation or the deployment of a particular function. For example: Whilst a telepresence system should support mechanisms for assured QoS, it may be deployed in a network where QoS is not assured.

Unless the requirement mentions a specific function or device, the requirements listed in this Recommendation apply to a telepresence system as a whole. The inclusion of a requirement does not necessarily mean that new protocols need to be developed to meet it. For example whilst there may be a requirement to support QoS for telepresence, ultimately existing QoS mechanisms may be utilized for this.