Picture communications system and associated network services

摘要: A real-time picture communications system ( 15 ) including a network subsystem 26 provides communication services between users 21 ), devices 22 and/or groups of users, devices, and other groups. Examples include cameras, viewers, keypads, writing tablets, microphones, telephones, combinations thereof. One or more protocol nodes 27 are connected to one networks provide the subsystem. registry database 28 includes user information 86 device 87 group 88 ). control 29 processes requests executes instructions, such as an attach instruction instructions that establish responsive authenticated request by extent allowed various access rights any