CREDIT CALLING METHOD

摘要

The method is for realizing the application service of the No.7 common channel signalling type credit call. The service is applied to the full electronic exchanger comprising a subscriber exchange subsystem (ASS;1) performing most of the call processes and the self maintenance, a central control subsystem (CCS;3) managing the whole system, and a network subsystem (INS) connecting between ASS's or ASS and CCS.