ISDN CONNECTING CIRCUIT OF PRIVATE SWITCHING SYSTEM

摘要

The device is an ISDN connecting circute of a private switching system for the purpose of converting a private switching system for non ISDN into that for ISDN. It comprises: (i) a data link controlling unit which generates signal informations of time slot 16; (ii) a unit which generates selective signals(TS) of time slot 16 when 2.048 MHz signal is counted to 16; (iii) a unit which transmits 30B+D channel signals to a transmission connecting circute by logically combinating the signal data of time slot 16 and a signals of time slot 0 - 15, 17 - 31 generated from the switching system.