EQUIPMENT FOR PRODUCING, TRANSMITTING, RECEIVING AND/OR PROCESSING TELECOMMUNICATIONS DATA AND/OR SIGNALS-NAMELY, ENCODERS, DECODERS, TERMINAL BUFFERS, TRANSMITTERS, RECEIVERS, TRANSCEIVERS, PROCESSORS, CONTROLLERS FOR PROCESSOR PERIPHERAL EQUIPMENT, ANALOG-TO-DIGITAL CONVERTERS, [ VIDEO SWITCHES, ] MODEMS, FREQUENCY MULTIPLEXERS, DATA STORAGE REGISTERS, CARRIER DETECTOR MONITORS, CARRIER DATA QUALITY MONITORS, CODED SIGNAL TRANSLATORS; DATA TEST SETS; EQUIPMENT FOR USE IN THE TELEGRAPH INDUSTRY-NAMELY, [ STATION SELECTORS, DATA REPEATERS, PROGRAMMABLE TERMINAL CONTROLLERS, IDLE LINE TELEPRINTER MOTOR CONTROLS, MESSAGE NUMBERING DEVICES; EQUIPMENT FOR USE IN THE TELEPHONE INDUSTRY-NAMELY, ] LOOP EXTENDERS, AMPLIFIERS, [ TELEPHONE LINE BRIDGES, ] SINGLE FREQUENCY TRANSMITTERS, DATA SETS, [ PUSHBUTTON TELEPHONE FREQUENCY DETECTORS AND CONTROLLERS; ] TELEPHONE TERMINATING AND SIGNALLING EQUIPMENT-NAMELY, ATTENUATORS, AMPLITUDE EQUALIZERS, ECHO SUPPRESSORS, RINGDOWN CIRCUITS, DIAL LONG LINE UNITS; TELEPHONE INTERCONNECT EQUIPMENT-NAMELY, VOICE COUPLERS, DATA COUPLERS; EQUIPMENT FOR MONITORING AND/OR CONTROLLING CONDITIONS AT DIFFERENT LOCATIONS-NAMELY, TIME DIVISION MULTIPLEXERS AND DEMULTIPLEXERS, KEYING TONE GENERATORS, ANNUNCIATOR CIRCUITS, CONDITION STATUS DISPLAYS, SERIAL-TO-PARALLEL CONVERTERS, PARALLEL-TO-SERIAL CONVERTERS; PARTS OF ALL OF THE FOREGOING GOODS; AND PLASTIC COVERS FOR ELECTRICAL CONNECTORS