41 Training services in the field of telecommunications networks, namely, analog and digital network system design, network operation, network maintenance, network testing, headend maintenance and testing, satellite uplink maintenance and testing, network management, and network engineering; and training services for telecommunications hardware and software, namely, video, audio and data signal access controllers, signal encrytors, modulators, encoders, transmitters, receivers, demodulators, decryptors, decoders, subscriber terminals and modems