Electric, electronic, optical, measuring, signaling, controlling and teaching apparatus and instruments, all for use with telecommunications, namely, apparatus for producing sound, images or data, magnetic and optical data carriers, data processors and computers, namely, microcomputers, minicomputers and computer central processors; computers and instructional manuals sold as a unit; computer interface apparatus, namely, computer modems, computer programs and databases for use in operating telecommunications and business management systems and related instruction manuals sold as a unit; computer programs, namely, software used for the provision of online information services, software for network access control, creating and maintaining firewalls; computer programs for accessing a global computer network and interactive computer communications network; audio, video and data communications systems, namely, digital and analogue signal transmitters, receivers and converters, radio and telephone transmitters, receivers and servers, stationary, wireless and cellular telephone systems and answering machines, telecommunication transmission, receiving and storage apparatus, electronic mail apparatus for electronic exchange of data images and messages, remote controls and set-top units; magnetically encoded telephone calling cards and blank smart cards; teleconferencing equipment, namely, telephones, telephone sets with screens and keyboard, video cameras; audiovisual teaching equipment, namely, multimedia projectors, video cameras; intercoms; telephones, telephone switches, telephone answering machines telephone networks, telephone wires, teleprinters, radio telephone equipment and accessories, namely, call boxes and systems, telephone units and audio operated relays; wireless and cellular telephones, pagers; personal communications equipment, namely, personal digital assistants (PDA), calculators and related computer peripherals