Abstract: A method for processing a great amount of intra-calls in the remote control system of a full electronic exchange system, whose time switch block is provided with a voice memory device and a control memory device to switch the PCM data to the intra-direction, and with a call pass controller to transfer to the host system or loop to the intra-direction the PCM data, comprises the steps of writing call direction data for designating the intra-call direction into the data region of the control memory device to switch the PCM data sequentially stored in the voice memory device to the intra-direction, and looping the entire channels to the intra-direction to switch the PCM data from the time switch block to the intra-direction if the call direction data designates the intra-call direction according to the treatment of the great amount of the intra-calls.

Abstract: A voice announcement technique of an electronic exchange system having a main processor for controlling a voice announcement function and a time switch which switches a voice announcement message to a subscriber interface unit includes a voice memory for storing coded data corresponding to words and pauses; a processor interface unit connected to the main processor, for interfacing a voice announcement command output from the main processor; a buffer unit connected to the processor interface unit, for buffering information for performing a voice announcement with the main processor; a digital signal processing unit connected to the buffer unit, for controlling the voice memory to access corresponding words and pauses if the voice announcement command has been received, thereby reproducing a voice announcement message; and an output device connected to the time switch via a sub highway, for outputting the voice announcement message to the sub highway under the control of the digital signal processing unit.