CALLER INFORMATION DISPLAY SERVICE APPARATUS OF TDX-1B FULL ELECTRONIC EXCHANGER

PURPOSE: A caller information display service apparatus of a TDX-1B full electronic exchanger is provided not to have an independent occupancy area for a caller ID service unit in an exchanger by collectively constructing a memory and a line interface circuit pack which directly controls a CID(Code Identity Delivery) signal service, and improve productivity and economical efficiency by reducing a production cost. CONSTITUTION: A TSGP(10) controls every thing of a CID(Code Identity Delivery) service unit as an upper processor an MLIB-F(Memory and Line Interface Board-F) circuit pack(100). A time switch(12) controls a path of a PCM(Pulse Code Modulation) signal of A TDX-1B, provides a path of an FSK signal of the MLIB-F circuit pack(100) and at the same time provides a 2.048 MHz clock and a 8KHz frame synchronization to the MLIB-F circuit pack(100). A data bus interface block(14) decodes a data bus and an address bus of the TSGP(10), interprets and provides it to a control block(16) and transmits a message received from the control block(16) to the TSGP(10). A sending block(18) transmits an FSK( Frequency Shift Keying) in a PCM(Pulse Code Modulation) form to a SHW interface block(20) under the control of the control block(16). The SHW interface block(20) provides the PCM signal provided from the sending block(18) to the time switch(12) or a receiving block(22). The receiving block(22) detects and analyzes the PCM data which have been loop-backed to test a transmission path of the PCM data.