KR930003619A - Private exchange built-in automatic exchange - Google Patents

Abstract

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Description

Private exchange built-in automatic exchange

Since this is an open matter, no full text was included.

2 is a schematic configuration diagram of a private exchange device incorporating the present invention automatic exchange device,

3 is a detailed block diagram of an automatic exchange apparatus according to FIG.

4 is a detailed block diagram illustrating a memory matching unit according to FIG. 3.

Claims (4)

Automatic switching device 10 in a conventional private exchange consisting of a trunk line connection circuit 11, a time division switching 12, a central control unit 9, and an extension subscriber circuit 13 receiving an input signal from the public telecommunication network c; Built-in private exchange built-in automatic exchange device, characterized in that built in the exchange device as a whole. 2. The DTMF receiver of claim 1, wherein the automatic switching apparatus 10 sends a call announcement to the caller so that the caller presses a desired extension number (d, f, g). After recognizing the number through Multi Frequency: 15), the number is recognized by the central control unit 9, and the caller wants to control the trunk line connection circuit 11, time division switching 12, and the station subscriber circuit 13 again. Private exchange built-in automatic exchange device characterized in that the call to the subscriber. The automatic switching device (10) according to any one of the preceding claims, wherein the automatic switching device (10) includes a central control circuit (14) which is in charge of the overall control of the automatic switching device, and a public communication network when an input signal is input from the public communication network (c). a memory 16 for storing voice information to be broadcasted to the caller of (c), a memory matching unit 17 for allowing the central control circuit 14 to control the memory 16, and a reference from the exchange. The highway connected to the exchanger and the clock generation circuit 19 which receives the clock (8KHz) and the basic clock (2.048MHz) and generates various clocks necessary for the autochanger 10 to be automatically switched to 32 independent channels. 16 basic touch-on digits coming from the highway via the PCM highway matching unit 18 and the PCM highway matching unit 18 connecting the HW ₂ ) with the memory matching unit 17 or the DTMF receiving unit 15. (touch on Digit) to centrally control PABX integrated automatic exchange device according to claim consisting of the DTMF receiver 15 to indicate to 14. 4. The memory matching section (17) according to claim 3, wherein the memory matching section (17) is combined with a channel designator (21) for inputting a channel and a start address designated by the central control circuit (14) to an input / output register built-in counter (24). An input / output register built-in counter 24 and a local memory 25 which manages while increasing the addresses required to drive the logic unit 20, the latch unit 23, and the memory 11 one by one for each corresponding channel time period based on the start address. And a parallel / serial data converter (22) for converting the output data of the memory into serial data and sending it to the PCM highway matching unit (18). ※ Note: The disclosure is based on the initial application.