Components of digital telecommunication networks, namely, digital private branch exchange and input and output interfaces; telephones for use on the Internet; computer hardware, namely, media gateway for linking different telecommunication networks; communication servers for call centers; multiplexers; [ demultipiexers; ] * demultiplexers * telecommunication networks controllers and managers; computer workstations comprising mainframe computers and modems, computer screens, radiotelephony sets; communication servers; digital radio switches; control, application and management software for digital private branch exchange namely utility software for managing software tools for digital private branch exchange of telecommunication networks, office application software for managing telecommunication functions from a user's computer in a telecommunication network, application operating software for managing digital private branch exchanges in a telecommunication network; digital computer terminals; fixed or movable digital base stations; portable terminals, namely personal radio terminals, personal data computer terminals, for communication, transmission, reception of voice, image, and data and management of telecommunication networks; internetwork gateways namely routers, interface and interconnection computers units for transfer between telecommunication networks; computer hardware; user's interfaces, namely utility software for access to telecommunication networks in Internet Protocol mode; control, application and management software for wire, optical fiber, radio or satellite telecommunication and radiocommunication networks used for relaying communications between telecommunication networks; software for managing, designing, configuring, and protecting local or remote networks for communication of voice, image, data and multimedia; computer hardware and software for protecting access to computer networks and Internet Protocol mode networks; enciphering and deciphering software used for voice, image and data; software for designing, managing, securing access to computer networks and Internet Protocol mode networks

Research, development and adaptation of telecommunication networks and of radio communication networks; designing and updating software for others for management, design, configuration and protection of local or remote network for communication of voice, image, data and multimedia; designing and updating software for others for designing, managing, securing access to computer networks and to Internet Protocol mode networks