Electronic testing devices and components thereof, all sold and used for identification of defects in and analysis of the operation and performance of wireless mobile telephone equipment, and all sold to manufacturers of and service centers for wireless mobile telephone equipment, and not for installation and maintenance of hardware and software for voice and data networks, namely mobile telephone testers; prerecorded magnetic data carriers, floppy disks, CDs, CD-ROMs and DVDs for use in testing, monitoring evaluating and manufacturing telecommunications equipment; computer peripherals, computer terminals; electric luminescent display panels; light emitting diode displays; testing equipment for telecommunications, namely, LAN/WAN analyzers, spectrum analyzers, oscilloscopes, network analyzers, digital signal testers and analyzers, bit error rate testers for monitoring, evaluating, testing, servicing and installing transmitters and receivers, transmission lines and signals, measurement receivers and frequency down converters for radio frequency propagation measurement, general purpose radio frequency receivers, radio frequency adapters, antenna couplers, cable connectors, electrical connectors, radio frequency connectors, coaxial cables, computer cables, modem cables, power cables, printer cables, Ethernet cables, electrical cables, electric adapter cables, optical fiber cables, adapters for mobile telephones, batteries, electric rechargeable batteries, charging devices for electric rechargeable batteries, electric power supplies, antennas, cards with integrated circuits, namely, subscriber identity module cards, radio frequency shielding cases; utility software for assisting in the development, service, repair and maintenance of mobile telephone equipment; software for testing the performance of mobile telephones