FSKA MOUNTED IN ASCIR OF FULL ELECTRONIC EXCHANGE

摘要

PURPOSE: An FSKA(Frequency Shift Keying board Assembly) mounted in an ASCIR(Analog Subscriber Interface Control Rack) of a full electronic exchange is provided to confirm a caller ID in a called side by being mounted on an LSI(Local Service Interface) block of the ASCIR and generating and transmitting an FSK(Frequency Shift Keying) signal corresponding to the caller ID. CONSTITUTION: A transmission block(40) transmits a preliminary signal for setting a caller ID display device installed at a called side as a state capable of receiving an FSK signal and an FSK signal corresponding to a caller ID. A control block(30) controls the transmission block(40) so that the preliminary signal and the FSK signal are transmitted from the transmission block(40) under the control of an LSP(Local Service Processor), and reports the transmitted result of the FSK signal reported from a receipt block(60) in a loop-back test mode to the LSP. A sub-highway interface block(50) feeds back the FSK signal outputted from the transmission block(40) and simultaneously transmits the FSK signal to a time switch(70) under the control of the control block(30) so that the FSK signal is transmitted to the caller ID display device. The receipt block(60) receives the FSK signal fed back from the sub-highway interface block(50), judges a transmitted result of the FSK signal on the basis of the consistency of the received FSK signal and the original FSK signal transmitted from the transmission block(40), and reports whether an FSKA is normal to the control block(30). A TD-bus interface block(20) controls a data bus and an address bus for connecting the LSP to the control block(30).