T.120 is a suite of point-to-multipoint communication protocols for teleconferencing, videoconferencing, and computer-supported collaboration. Teleconferencing and telepresence technologies are often implemented in green computing initiatives. Teleconferencing enhances group communication through voice, video, and a shared whiteboard. The new podium contained video screens for teleconferencing and multimedia displays. Sound cards are also used for computer-based communication such as voice over IP and teleconferencing. Video teleconferencing involves connections among many parties, communicating voice, video, as well as data. H.261 was meant for teleconferencing and ISDN telephoning. In video and teleconferencing, time lags due to technology-mediated communication can cause confusion between collaborators. Some companies also employ self-service technologies such as centralized procurement and teleconferencing. Video teleconferencing enhances group interaction at a distance. It offers courses online (around 450), through correspondence, teleconferencing and satellite links. This room includes a 50-inch plasma screen television which can be used for teleconferencing. This is advantageous for applications like teleconferencing, studio editing, etc. The TCP/IP-based LAN successfully supported Telnet, FTP, and a Defense Department teleconferencing application. A training center was included from the start, with a teleconferencing center and fitness center.