sale, installation, maintenance and repair of Private Branch Exchange (PBX's), keysystems, voice mail systems, interactive voice response systems, automatic all distribution systems, call accounting systems and similar related products; local and wide area networks; home page development and web site hosting

telecommunications services, namely, ISDN services, T carrier systems, frame rely, X.25, digital dataphone services, FDDI, 800 number services, IMP services, DID/DOD services, analog and digital centrex services, long distance services, broadcast fax services, prepaid calling card services, and business/residential tariffed services regulated by various state public service commissions and the Federal Communications Commission