telecommunications equipment, namely, telephones; telephone systems comprising a handset and console unit which features standard telephone functions, one-touch dialing, call progress monitoring, group listening, clock/calendar and alarm functions, electronic display and modules featuring automatic dialing, call restriction, stored message recall and custom calling; telephone apparatus in the nature of speakerphones; mobile telecommunication equipment comprising a control telephone unit, transceiver and antenna; wireless telephones and component parts therefor; caller identification telephone devices; computer programs for telecommunications switches and voice mail and messaging; telephone installation apparatus, namely, phone mounts, dual outlet adaptors, telephone outlets, modular jacks, wire junctions and plug-in converters; interactive television units for acquisition of information from databases; telecommunications switches; computer programs for managing telecommunications networks; network multiplexers; data communication multiplexers and concentrators; videotex terminals for an interactive electronic data transmission; electric emergency call units, namely, telephones and pagers; videophones; pagers; fiber optic cable; copper electrical cable and wire; fiber optic connectors; integrated circuits; microprocessors and digital signal processors

installation and maintenance of telecommunications networks and systems