Robert Lechner

Protective circuit for the overvoltage protection of a subscriber line interconnect circuit

Circuit for subscriber line interface circuits in a digital time-division multiplex communication switching center

Digital interface of an integrated subscriber line interface circuit

Radio communication system based on digital localisation points

Radio communication network based on digital local exchanges

Radio terminal using a hybrid coax-fibre broadband network

Radio communications system with central illumination by sector antennae

Two to four wire hybrid circuit arrangement for a pulse code modulated time multiplex telecommunication system

Method for testing a subscriber connection circuit and its connected analog subscriber station and subscriber connection line, and circuit arrangement to carry out the method

Circuit arrangement for determining the connection condition of a subscriber line in a telecommunications network