Closed-circuit TV (CCTV ) , a.k.a. Video surveillance, is the use of television cameras to send the signal to a particular area, on a specific collection of monitors. It differs from show TV in that this communication is not openly communicated, though it may use end to end (P2P ) , end to multipoint (P2MP ), or mesh wired or wireless links. Though nearly all television cameras fit the definition, the term is most frequently used to those employed for surveillance in countries that may require monitoring , e.g., banks, shops, and other areas where security is needed. Though Video-telephony is rarely named ‘CCTV ‘ one example is the usage of television in space education, where it is an important way.