PROCESS FOR ESTABLISHING SUBSCRIBER TERMINAL CONNECTIONS, RESPECTIVELY TRANSMISSION LINES CONNECTED TO A DATA CENTER, THAT PROCESS AND TRANSMIT SIGNS WITH DIFFERENT PROCEDURES, WITH CONVERTERS OF SIGNALS ALSO CONNECTED AT THE CENTERS

摘要

A method is disclosed for establishing connections from subscriber stations or transmission lines connected to a data exchange system to signal converters. The data exchange system receives information concerning the free state or busy state of the signal converters. For this purpose, it is provided that, having forwarded the signals with which it has been previously supplied for signal conversion, the signal converter emits a special free signal which may differ from an accompanying signal indicating the end of signal transmission and which changes the busy state signal ("1") indicative of the busy state of the signal converter directly into a free state signal ("0").