communications equipment, components and test equipment, namely, microwave signal sources, transceivers, frequency converters, digital signal modulators, digital demodulators, burst modems, digital signal processors, bandwidth management devices, namely, computers and computer software for bandwidth management, ATM (Asynchronous Transfer Mode) processing equipment, namely, ATM access switches and ATM edge switches, network computers and computer software for network management, TCP/IP packet devices, namely, computers and computer software to encrypt communications traffic, digital protocol converters, and digital switches