Digital telecommunication network hardware, namely, devices for transporting and aggregating voice, data and video communications across digital telecommunication protocols; telecommunication exchangers, namely, private digital branch exchanges, computer input and output interfaces and peripheral devices for computers for such automatic switchboards, especially for Internet telephony; internetwork gateway routers in the nature of computer control hardware, call centre computer servers, multiplexers, demultiplexers, apparatus and instruments for controlling and administering networks, namely, computer network adapters, computer network bridges, computer network hardware, computer software for administration of computer networks; application, operating and administration recorded software for private automatic branch exchanges; terminals, fixed or mobile terminals; apparatus for communicating, transmitting, receiving and processing voice, images, data and multimedia data; internetwork gateway routers in the nature of computer control hardware; network infrastructures basic equipment and access interfaces to networks in IP (Internet Protocol) mode in the nature of networking hardware, namely, devices for transporting and aggregating voice, data and video communications across multiple network infrastructures and communications protocols; computer software, namely, recorded computer programs designed for use in digital radio communication networks; computer software recorded on data media designed for use in communication and radio communication networks via land line, via cable, via fibre optics, by radio or by satellite; computer software recorded on data media for management, administration, architecture, configuration and protection of local or remote communication networks for voice, images, data and multimedia data; computer hardware and software recorded on data media for rendering secure access to computer networks and to networks in IP (Internet Protocol) mode; computer software recorded on data media for encryption and decryption; computer software recorded on data media for encoding and decoding; computer software recorded on data media for the architecture, administration and rendering secure access to computer networks and to Internet Protocol (IP) networks