Method for controlling the information transmission of switched four-wire connections, especially semi-permanent switched connections in digital TDM exchanges

摘要

the koppelfeld (sn) by comparison of the geu00addoppelten koppelfeldteilen (sno, sn1) coming bitstru00f6men checked, the other parts of the agency by paritypru00fcfungen.the evaluation is done at a central point (liu), which establish an parityfehlers during transmission in a u00fcbertragungsrichtung for transmission in the other u00fcbertragungsrichtung generated paritybit on erzeugungsort (the) is distorted.