KR960020289A

KR960020289A - Telephone Line Automatic Switching Machine

Info

Publication number: KR960020289A
Application number: KR1019940031529A
Authority: KR
Inventors: 이홍일
Original assignee: 이홍일
Priority date: 1994-11-28
Filing date: 1994-11-28
Publication date: 1996-06-17
Also published as: KR970011430B1

Abstract

본 발명은 단말장치 앞단에 설치된 전화회선자동절체기가 수신상태에서 어느회선으로 선택되어 있더라도 반드시 호출신호가 입력되는 쪽으로만 선택이 되도록 하였으며, 한 회선이 통화중일때 비사용회선을 통화중 상태로 만들어 사용상 이용자로 하여금 혼란이 없도록함과 동시에 국제전화 및 국내전용전화를 직통회선으로 연결, 경계성이 향상되는 장치를 제공하는 것으로, 단말장치 송신시 국제 및 국내를 선택하는 전화선선택 스위치회로(6)와, 수신시 어느 회선으로 호출이 되고 있는가를 감지하는 호출신호 감지회로(7)(8)와, 전화선선택스위치(6)와 호출신호감지회로(7)(8)의 상태를 감지하여 점유된 전화회선을 연결시켜주는 제어회로(10)와, 전화회선을 선택하여 연결하여 주고 연결된 선로의 상태를 표시하여주는 선로선택 및 동작표시회로(11)(12)와, 한 회선이 통화중임을 감지하여 비사용회선을 통화중 상태로 만들도록하는 선로통화중 회로(13)(14)와, 통화가 해제되면서 발생하는 백신호를 차단하여 주는 호출신호 감지중지회로(15)와, 단말장치의 동작상태를 감지하여 호출신호감지회로(7)(8), 제어회로(10), 선로선택 및 동작표시회로(11)(19), 선로통화중회로(13)(14), 호출신호 감지중지회로(15), 등을 제어하는 단말기동작상태검출회로(9)와, 각 IC, 릴레이, 소자등을 작동시킬 수 있는 정전압안정화회로에 의하여 구성되는 것이다.According to the present invention, even if a telephone line automatic switching device installed at the front end of the terminal device is selected as a line in a reception state, only a call signal is inputted, and an unused line is put into a busy state when one line is busy. A telephone line selection switch circuit (6) which selects international and domestic when transmitting a terminal device by providing a device that improves the borderline by connecting international calls and domestic dedicated telephones to a direct line so that users do not have confusion in use. And a telephone occupied by detecting a state of a call signal detection circuit (7) (8), which detects which line is being called, and a state of a telephone line selection switch (6) and a call signal detection circuit (7) (8). Control circuit 10 for connecting lines, and line selection and operation display circuits 11 for selecting and connecting telephone lines and displaying the status of connected lines. 2) and a line call circuit 13 and 14 to detect that one line is in a call and make the unused line busy, and stop the call signal detection to block the vaccine signal generated when the call is released. Circuit 15 and a call signal detection circuit (7) (8), a control circuit (10), a line selection and operation display circuit (11), (19), a line call circuit (13) by detecting an operation state of a terminal device. (14), a call signal detection stop circuit (15), and a terminal operation state detection circuit (9) for controlling the same, and a constant voltage stabilization circuit capable of operating respective ICs, relays, and the like.

Description

Telephone Line Automatic Switching Machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 전화회선자동절체기를 연결한 직접접속서비스망의 구성도,1 is a configuration diagram of a direct access service network connecting an automatic telephone line changer according to the present invention;

제2도는 본 발명에 따른 전화회선자동절체기의 블록도,2 is a block diagram of an automatic telephone line changer according to the present invention;

제3도는 본 발명에 따른 전화회선자동절체기의 구체 회로도.3 is a detailed circuit diagram of a telephone line automatic changer according to the present invention.

Claims

6, a telephone line selector switch for selecting international and domestic when transmitting a terminal device, a call signal detecting circuit (7) and (8) for detecting which call is best when received, and a state of a call signal The control circuit 10 for connecting the occupied telephone line to the terminal device, the domestic line selection and operation display circuit 11, the international line selection and operation display circuit 12, and the operation state of the terminal. A terminal operation state detection circuit 9 for connecting to a control circuit, and a line call circuit 11 and 12 for detecting an unused line in a call state by detecting that one line is in a call, and during a line call A call signal detection circuit 15 for detecting a detection signal of the circuits 11 and 12 and blocking the call signal detection circuits 7 and 8 from being introduced into the vaccine; and the call detection circuit 7 The control circuit 10 receives the detection signals of the < RTI ID = 0.0 > 8, < / RTI > Arthur controls the domestic line selection and operation display circuit 11 and the international line selection and operation display circuit 12 to control the telephone line selection circuit 16 to connect the previous line to the terminal device. Telephone line automatic changer, characterized in that to supply a stable power to the circuit.

The automatic telephone line changer according to claim 1, wherein the terminal device is connected to an international telephone line or a domestic telephone line when a call signal is input from the international telephone line or a domestic telephone line.

The method of claim 1, further comprising: preventing the terminal device from being connected to the domestic telephone line even if there is a call signal on the domestic telephone line while the call signal is input on the international telephone line. Automatic telephone line changer, characterized in that the terminal device is not connected to the international telephone line and the domestic telephone line is busy while the call signal is input from the international telephone line. .

The method of claim 1, wherein the terminal device is automatically connected to the domestic telephone line when the telephone line selection switch 6 is selected in the domestic telephone line when the terminal device is over the international telephone line. When the terminal device ends the call through the line If the telephone line selection switch 6 is selected on the international telephone line, the terminal device is automatically connected to the international telephone line, and when the terminal device ends the call through the international telephone line. If the telephone line selection switch 6 is selected on the international telephone line, the terminal equipment is automatically connected to the international telephone line, and when the terminal equipment is over the domestic telephone line, the telephone line selection switch 6 is connected to the domestic telephone line. If it is selected, the terminal line is automatically connected to the domestic telephone line, characterized in that the automatic telephone line switching .

The display device of claim 1, further comprising domestic and international LED lamps (LED1) (LED2) for displaying a reception state according to the call signal input and for indicating that a telephone line is selected by a telephone line selection switch. Automatic telephone line changer, characterized in that.

The telephone line and the telephone station of claim 1, wherein in the domestic public telephone network, the PABX itself cancels a signal transmitted to or received from the other party's telephone station. RINGER BACK TONE is sent to the subscriber line when the signals are sent and received from PCM section between them. The telephone line automatic switching device, characterized in that the user does not cause confusion in use because the call signal detection stop circuit (15) determines whether or not the state of the call to process so as not to detect the call signal.

2. The telephone line automatic changer according to claim 1, wherein the apparatus is connected between two telephone lines and a terminal apparatus.

※ Note: The disclosure is based on the initial application.