Telecommunications services, namely, broadband access services in commercial office buildings, electronic mail, network security services consisting of installing equipment to prevent third party intrusions into private computer systems, provision of access by telephone lines to a global computer information network, provision and installation of equipment and software necessary to link remote office branches in a secure computer network, provision and installation of equipment which allows the use of a global computer information network for the transmission of telephone communications, and the provision of software packages over a global computer information network on a rental basis