Guidelines for multipoint videoconferencing using low-cost, PC-based equipment

We have compiled a set of guidelines for effective multipoint videoconferen cing carried out with low-cost, PC-based systems. The guidelines are based on experience gained during multipoint videoconferences in epidemiology and orthopaedics/radiology. Joint data inspection and manipulation were carrie d out by application sharing between the PCs. The guidelines are categorize d by the time of their application and also by their content. For effective multipoint videoconferences, preparation of the agenda and of digital docu ments is mandatory. The prevention of echo effects and half-duplex audio co nnections are of special importance. A protocol to optimize the order of sp eakers increases the efficient use of conference time. The guidelines worke d well when used in a multisite research project and addressed the most imp ortant weak points of multipoint videoconferences using low-cost equipment.