Design of telecommunications and computer networks for others; providing information in the field of computer programming; advisory and consulting services in the field of computer programming and telecommunications; providing on-line interactive database information services in the field of network management in the telecommunications field; writing, development, updating and design of computer software for others; rental and leasing of computers and data processing equipment; installation of computer software for data processing; providing on-line computer databases featuring information in the area of network management for telecommunications via a global computer network; planning and design services of telecommunications and computer networks for others; professional consulting services in the field of telecommunications, message sending, message receiving, data transmission and data network; providing information in the field of computer programming and network management in the field of telecommunications; integration of computer systems and networks; computer and telecommunications systems and network analysis; rental and leasing of computer and data processing hardware, software and firmware