and service usually employed by enterprise-level corporate offices. Traditional videoconferencing system manufacturers have begun providing mobile applications as well, such as those that allow for live and still image streaming. In the present day standalone videophones and umts video-enabled mobile phones are usually used on a person-to-person basis. A related and similar device is a TV camera which is usually small, sits on top of a TV and can connect to it via its hdmi port, similar to how a webcam attaches to a computer via a USB port. 134153 160187, Volume 47,. CS1 maint: Extra text: editors list ( link ) Marshall, Colin. 90 the popular television series Pee-Wee's Playhouse, Pee-wee Herman often made and received calls on a videophone-like 'magic screen' (19861990 the movie Back to the Future Part II, where the future Marty McFly is contacted by Needles, his coworker, and then by his boss. Although videoconferencing has frequently proven its value, research has shown that some non-managerial employees prefer not to use it due to several factors, including anxiety. There are several types of dedicated videoconferencing devices: Large group videoconferencing are non-portable, large, more expensive devices used for large rooms and auditoriums. They became known as PTZ cameras. VCLink for Mobile Devices AVer Video Conferencing Archived at the Wayback Machine. Retrieved August 19, 2010 Howell, Peter. Press videoconferencing permits international press conferences via videoconferencing over the Internet. Videoconferencing has also been called "visual collaboration" and is a type of groupware. Over the next 15 years, Project diane (Diversified Information and Assistance Network) grew to utilize a variety of videoconferencing platforms to create a multi-state cooperative public service and distance education network consisting of several hundred schools, libraries, science museums, zoos and parks, and many other. 13 A videoconference system is generally higher cost than a videophone and deploys greater capabilities. This layer manages Real-Time Transport Protocols, User Datagram Packets (UDP) and Real-Time Transport Control Protocol (rtcp). The International Telecommunication Union Standardization Sector ( ITU-T ) recommendation.113 has defined broadband as a transmission capacity.5 to 2 Mbit/s.