42 COMPUTER CONSULTATION, LEASING OF COMPUTER HARDWARE AND SOFTWARE USED IN THE FIELD OF TELECOMMUNICATIONS AND INFORMATION TECHNOLOGY; TECHNICAL SUPPORT SERVICES, NAMELY, TROUBLESHOOTING OF COMPUTER HARDWARE AND SOFTWARE PROBLEMS FOR INFORMATION SAFETY IN THE FIELD OF TELECOMMUNICATION AND INFORMATION TECHNOLOGY VIA TELEPHONE, E-MAIL AND IN PERSON, UPDATING COMPUTER SOFTWARE; MAINTENANCE OF COMPUTER SOFTWARE