| 摘要 |
PURPOSE:To simplify the circuit constitution, by using the all confirmation type signal MFC for the state of subscriber and relay line exchange, delivering the incoming trunk allocation information of the relay line exchange stage from the subscriber exchange stage to reduce the burden in the relay line exchange stage. CONSTITUTION:As the location information of incoming trunk connected to the subscriber exchange stage L, the full confirmation type signal MFC by frame number, level signal and horizontal number is used for the exchange information fed to the relay exchange stage T, allowing to delier and receive all the information in 2 out of 5 between each unit and line. Further, the position information of the marker MKR of the outgoing trunk of the incoming register IR and the subscriber stage L of the exchange stage T is corresponded to the storage circuits FNM, LNM, HNM, SNM and CLSM to oprate the relay contacts fnk, lnk, sk, ld and ck, and reception is made with the MFC signal receiver CDR provided with the incoming register IR of the exchange stage T to reduce the burden in the exchange stage T. |
