Descriptors | Token ring networks, Ring networks, Physical layer (OSI), Local area networks, Computer networks, Open systems interconnection, Electric cables, Electric wires, Communication cables, Electric cable systems, Interfaces, Interfaces (data processing), Electric connectors, Electric plugs, Data transmission, Information exchange, Data transfer, Signals, Signal distortion, Noise (spurious signals), Compatibility, Electrical safety, Errors, Voltage, Electrical impedance, Communication equipment, Transmitters, Receivers, Telephony, Electronic equipment and components |