"ELECTRICAL, OPTICAL AND WIRELESS DATA AND VOICE COMMUNICATION SYSTEMS, EQUIPMENT AND COMPONENTS; SIGNAL AMPLIFICATION AND MANIPULATION EQUIPMENT AND COMPONENTS; OPTIC AND ELECTRIC CABLE CONNECTION AND TERMINATION DEVICES; TELECOMMUNICATIONS HARDWARE; SWITCHING SYSTEMS, INCLUDING OPTICAL SWITCHING SYSTEMS; COMPUTER SOFTWARE EQUIPMENT; OPTICAL FIREWALLS; FIBRE OPTIC CABLES, PARTS AND FITTINGS THEREFOR; EQUIPMENT FOR USE WITH OPTICAL NETWORKS