he size of an area covered are a function of the camera lens itself and the distance between the camera and the conference participants. Zooming allows a camera lens to be moved in and out to accommodate different group sizes. Auxiliary cameras can be used when the maximum viewing angle (measured in degrees) of a system's camera limits room coverage. They can be wall- or tripod- mounted. Extensive whiteboard use may warrant training an auxiliary camera permanently on the presentation space. Electronic whiteboards (which are an invaluable option) may be another requirement. If one will be installed, be certain that there is an interface port on the videoconferencing system to support it. Many implementations include a DVD or VCR. The ability to integrate computer graphics and documents into presentations is an important requirement. In the past, document cameras were used to capture printed images, blueprints and charts. Today, nearly all systems provide an interface to an audiographics sub-system, and many build the subsystem directly into the videoconferencing group system. Nearly all room systems should include physical ports for audiographics equipment. Audiographics capabilities should conform to the ITU-T T.120 specification SO that any end-point can share files. Document annotation capabilities are generally included. Consider providing space and wiring for the electronic tablets and/or workstations that provide the annotation interface. If a document camera is needed, a placement decision must be made. Some are mounted in the ceiling to secure the field of view necessary for large documents. Some could be termed as graphics consoles. They provide backlighting to illuminate slides and transparencies. Additional features such as graphic image preview monitors or special control panels are convenient, but they add to a system's cost. If applications are scientific, a facility plan should accommodate microscopes, high- resolution cameras, and other scientific equipment. If the goal is to accomplish engineering