Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
Schaltungsanordnung fuer teilnehmer-anschlussleitungen mit zwei symmetrischen doppelleitungen fuer zusaetzliche zeichenuebertragung, insbesondere fuer bildfernsprecher
Anordnung zur Auftrennung von ueber Relaisstellen mit niederfrequenter vierdraehtiger Durchschaltung verlaufender Verbindungen, insbesondere Dezimeter-Funkverbindungen, in diesen Relaisstellen