telecommunication apparatus, namely, key switch and private branch exchange units, single and multiple line telephone sets, cellular/radio telephone sets and pager devices, telecopier machines, voice and call processing and routing devices, modems, multiplexers, codexes, and computers

voice/data telecommunications services, namely, local exchange, long distance and international long distance services, wireless, cellular, radio-telephone, paging and personal communication services, operator assistance, pre-paid and credit calling card services, dedicated and private line services, T1, DS1 and DS3 and other data transmission services, computer/telephone and video integration services