GFELLER

Telephone Systems-Namely, Pabx's, Line Concentrators, Emergency Telephone Communication Systems for Highways, Intercommunication Apparatus; Telephone Instruments-Namely, Automatic- and LB-Desk and Wall Telephones, Field Telephones, Lightweight Headsets; Data-Processing and Transmission Systems-Namely, Time Division Multiplexers (TDM) and Frequency Division Multiplexers (FDM); Electronic Low Frequency Equipment for Telecommunications-Namely, Modems; Remote and Local Control, Monitoring and Telemetering Systems Comprising Processor-Controlled Evaluation and Data Transfer Over Telephone Lines for Energy and Water Supply, for Aerial Cableways and Skilifts, for Safe Deposit Boxes; Remote Status-Reporting and Alarm Units; Remote Switching Units; Acoustical Units-Namely, Hearing Aids; Optical Signalling Units-Namely, Electro-Optical Sensors; Receiver and Microphone Capsules; Structural Components-Namely, Relays, Switches, Telephone-Connectors and -Terminals