TCM-TYPE ISDN TERMINAL INTERFACE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a TCM type ISDN terminal interface system which can realize a terminal side interface by a pair of the same signal lines as a line side interface. SOLUTION: A signal having frame structure stipulated by an ITU-T G961 AppendexIII is inputted to a line receiver 6 from a line input/output point 1. A burst-like reception signal is taken out. A first frame conversion part 8 exchanges an overhead part for a terminal interface. Then the signal is outputted to a terminal interface input/output point 2 via an interface driver 9. The burst-like reception signal inputted from the terminal interface input/ output point 2 is inputted to a second frame conversion part 4 via an interface receiver 5. A frame for sending it to a line instead of the frame overhead part of a terminal interface is added to generate the frame based upon are ITU-T G961AppendexIII. Then the signal is outputted to the line input/output point 1 via the line driver 9.