9 electrical and optical telecommunication devices, namely, switches, transmitters, receivers, concentrators, multiplexers, cross connects, multimedia servers, subscriber computer terminals, computer hardware for use in telecommunications; computer software for the operation and maintenance of telecommunication systems telecommunications equipment, namely, telephones, telephone handsets, videophones, telephone switches, telephone answering sets, telephone dialing devices, private automatic branch exchanges, facsimile machines, photocopiers, and power supply units for telecommunications networks and equipment; transmission media, namely, telecommunication cables and optical fibers and pertinent connection elements; parts of all the appliances and devices mentioned above; telephone and telecommunications systems comprised of combinations of the equipment listed above