System and method for supervising calls in the exchange

摘要: A call supervisory system in the exchange includes: a trunk card device (TCD) connected to of an external via control line (CTL); unit (DCU), as lower level processor, for controlling TCD; man machine interface (MMIU) matched with switching data and managing password; trace path setup (CTCU) according demands received through MMIU informing result relevant MMIU; number translation (NUTU) translating when processing calls CTCU; (CTSU) setting up supervision management (CMU) performing process function exchange, sending flag NUTU, occurrence events CTSU; fault (FACU) contents telephony maintenance (TDMU) repair speech equipment FACU.