KR920000066B1 - Method & apparatus of monitoring circuit - Google Patents

Abstract

The apparatus monitors the subcriber line all the time to check any abnormality. A main pulse generating means supplies pulses to drive the circuit and scan the time. A subscriber board monitors the subscriber line, and reports the result of the monitoring to a computer. A terminal section includes: a separate partial pulse generating section; and a tone transmitting section for transmitting carrier tones. The telephone line checking tones are transmitted from a main control section to the subsciber board, while the terminal board transmits carrier tones corresponding to the checking tones, so that the subcriber board judges the state of the subscriber line.

Description

Line monitoring method and device for subscriber in call

1 is a block diagram showing a system of the present invention.

2 is a detailed circuit diagram showing a subscriber board of a main control section as a preferred embodiment of the present invention.

3 is a detailed circuit diagram showing the terminal section according to FIG.

4 is a time chart showing each pulse train of the present invention according to FIG.

* Explanation of symbols for the main parts of the drawings

1: main controller 2: pressurizer board

P, G: main pulse transmitter 4-4 _n : terminal

5: computer 6: scanning unit

7: Channel selector 8: Call detection unit

9,18: tone sending unit 10,19: paper sending unit

11,16: DTMF receiver 12,17: tone detector

13: Rotation status judgment section 14,20: Track method selection section

15: local pulse generator PG ′: pulse receiver

IC ₁ -IC ₂₃ : integrated circuit 101-105: AND logic element

201-203: OR logic element 301-303: OR logic element

401-404: NAND logic element

The present invention provides a circuit monitoring method for a subscriber with a call that has a means that can be recorded at the same time by monitoring the automatic telephone line or a dedicated line constituting the call path, reading out the abnormality of the line, displaying it on a monitor, and Relates to a device.

In the conventional method of monitoring a circuit, a failure is monitored by checking the presence of abnormality of section intervals or making a call for a circuit check at a predetermined time depending on a telephone call frequently performed by a subscriber. In the case of a line failure, a very basic method is used in terms of active operation of the line, such as notifying the main control side by using other communication means. The present invention has been made to solve all the problems of the prior art described above, in the six-wire or four-wire type that typically constitutes a line by separating the call path and the signal line, the call path to monitor the line using a specific signal tone The signal line is to overcome the problem by monitoring the line using the branch.

Accordingly, it is an object of the present invention to provide a line monitoring method and apparatus capable of sequentially recording a state of a line by continuously monitoring an automatic telephone line or a telephone line that is configured and configured as a main control unit and a terminal unit.

It is another object of the present invention to provide a line monitoring method and apparatus for displaying a long-term call state of a terminal side in a call subscriber and holding a monitoring test so as not to affect the call.

The above and other objects and advantages of the present invention will be readily apparent from the detailed description of the preferred embodiments of the present invention.

According to the present invention, the main control unit transmits DTMF tones through the main pulse transmitting means for providing the pulses necessary for the scanning time and the circuit driving, the tone transmitting and DTMF receiving means for checking the communication path, and the paper transmitting and receiving means for checking the signal line. A plurality of subscriber boards having a means for monitoring the circuit and connecting the check results to a computer are formed and connected, and a terminal unit 1: 1 connected to the subscriber board is installed at the end of a call line, and the terminal unit is an independent local unit. It consists of a pulse transmitting means and DTMF reception for receiving the transmitted tone, and a tone sending means for sending a return tone corresponding to the received tone and a paper sending means, and the check tone by the scanning time on the car subscriber board of the main control unit. Carrier tones sent to the terminal unit, and the terminal unit transmits the return tone corresponding to the check tone and the subscriber board receives The main control unit is connected to the computer's cpu via an interface so that the monitor and the printer can be monitored.

Looking at the device configuration as an embodiment of the method of the present invention as follows.

)에 의하여 시동되는 통화로 점검을 위한 추 송출부(9), 상기 톤 송출부(9)이 점검이 종료되면서 신호선 점검을 위하여 주 펄스 발신부(PC)의 MT₁신호와 통화중이 아니라는 신호(

)에 의하여 시동되어 신호전에 지기를 송출하는 지기 송출부(10), 상기 톤 송출부(9)의 DTMF 송출톤에 대응하는 단말부의 반송톤을 수신하는 DTMF 수신부(11)의 수신톤을 필터링하여 해당 반송톤 인지의 여부를 판단하는 톤 검출부(12), 이 톤 걸출부(12)의 출력이 선택된 채널(S₁)과 제한된 점검시간(73.3ms)동안에 검출된 것인가에 따라서 회선상태 판단을 행하고 그 결과를 컴퓨터에 연결하여 주는 회선상태 판단부(13), 단말의 통화중 상대를 검출하며 지기 송출을 위하여 지기송출부(10)의 릴레이 접점(γm₁)이 개재된 통화중 검출부(8) 및 상기 로직에 주 펄스 발신부(PG)의 클록 펄스에 따라서 상이한 제어 펄스를 발생공급하는 펄스수신부(PG′)와 6선식 또는 4선신 통화로에 따라서 선택되는 선로 방식선택부(14)로서 가입자보드(2)를 구성한다.The main controller 1 is composed of a crystal oscillator for generating pulses required for logic driving, a main pulse transmitter PG consisting of a binary counter, and a subscriber board 2. Referring to the subscriber board 2, FIG. As shown in FIG. 5, the scanning unit 5 generates a scanning output by the pulse period of the dip switch and the pulse receiving unit PG ′, and selects one channel during the scanning output and one channel check time 568 (ms). The channel selector 7 for outputting the signal is connected to the selected channel S ₁ of the channel selector 7 and that the busy detection unit 8 is not busy (

The signal transmitting unit 9 for checking the call route started by the t) and the tone transmitting unit 9 are not in a call with the MT ₁ signal of the main pulse transmitter PC for checking the signal line as the inspection is finished. (

Filter the receiving tone of the DTMF receiver 11 receiving the carrier tone of the terminal transmitter corresponding to the DTMF tone of the tone transmitter 9 and the transmitter transmitter 10 for transmitting the branch before the signal. The tone detection unit 12 that determines whether or not the carrier tone is detected, and the line state judgment is made according to whether the output of the tone exchanging unit 12 has been detected during the selected channel S ₁ and for the limited check time (73.3 ms). The line state determination unit 13 which connects the result to a computer, detects a caller's counterpart in a call, and detects a caller of the terminal, and relays a contact point 8 in which a relay contact γ m ₁ of the ground transmitter 10 is interposed. And a pulse receiver PG 'for generating and supplying different control pulses according to the clock pulses of the main pulse transmitter PG to the logic and a line method selector 14 selected according to a six-wire or four-wire communication path. Configure the board (2).

The subscriber board 2 may have the same circuit configuration for checking a plurality of channels, and the scanning unit 6, the channel selector 7, and the pulse receiver PG ′ are shared and other components. Is increased by the number of channels.

Next, the terminal unit 4 responds to the monitoring signal of the call path and the signal line of the subscriber board 2.

As shown in FIG. 3, the terminal unit 4 has a DTMF receiver 16 for receiving a monitoring tone in the call of the tone transmitter 9 of the subscriber board 2 connected to the receiving side call path. Connect the tone detector 17 which analyzes the DTMF received tone and detects the corresponding signal tone, and the tone detector 17 applies one pulse to the tone transmitter 18 when the tone is detected and outputs the tone. The unit 18 starts a carrier sending unit that responds to the monitoring tone of the communication path and a paper sending unit that responds to the monitoring tone of the signal line, and when the DTMF receiving unit 18 detects the monitoring channel monitoring signal, The formed tone sending unit 18 causes the conveying tone to be conveyed to the subscriber board 2, while the signal line monitoring tone of the tone sending unit 18 has a relay having a relay interposed on the signal lines E ₁ and M ₁ . The transmitter 19 is driven to counter-receive the keeper signal to the subscriber board 2. The track system selecting unit 20 corresponding to the part (1) track system selecting unit 14 is implemented in each terminal unit (4-4 _n). Detailed circuit diagrams of FIGS. 2 and 3 are attached to the PCB and are input and output terminals.

Let's look at the effect in more detail for the present invention constituting the configuration as described above.

The connection of the present invention is operated by being connected to an end of a call path to be monitored. The subscriber board (2) of the main control unit 1 as a second assist, (① scanning section 6 to the reset terminal of the BCD up-counter integrated circuit (IC _1, IC ₂₎ the RS ₁ to the ordinary "H" state of the It is input from the main pulse transmitter PG, and the RS ₁ becomes “L” by the scanning time, and the integrated circuits IC ₁ and IC ₂ are in an operation standby state. 2sec pulse is input to the output, and the output is generated by the dip switch operated by the output through the dip switch and the integrated circuit IC ₃ and IC ₄ .

② The output of the NOR logic element 301 is a through "H" output and bar input to the decade counter integrated circuit (IC ₅₎ a reset stage in the inversion level of the inverter (Inverter) channel selector 7 Since 586ms is connected to the enable, the channel is changed through the output stage at the interval of 586ms. The S ₁ Q ₁ of the channel CH ₁ output value is selected) at the same time as the LED ₁ lights up in the output of the NOR logic element 301 is displayed an operation is in progress.

“H”가 되고 이는 톤 송출부(9)의 2입력낸드 논리소자(401)에 S₁과 함께 “H”입력되면서 “L”출력이 나타나게 되고 BCO 업 카운터 집적회로(IC₆)의 리셋단에 인가된다.③ When the channel CH ₁ is selected, in the call detection unit 8 of the channel CH ₁ , when the subscriber line is busy, the output BS ₁ of the comparator composed of the OP amplifier and the logic circuit appears as “H”. On the contrary, when not on a call, BS ₁ is in the “L” state.

It becomes “H”, which means that “L” output appears when “H” is inputted with S ₁ to the two-input NAND logic element 401 of the tone transmitting unit 9, and the reset stage of the BCO up-counter integrated circuit IC ₆ is displayed. Is applied to.

At the same time, 73.3ms of pulses are inputted to the enable, and output Q ₀ is “L” output to AT ₁ via the inverter. AT ₁ of the “L” level is input to C ₄ and R ₁ of the MFD (Multi Frequency Dialer) IC (IC ₈ ), and the A tone is output, and the Any key Down is “L”. The relay RS ₁ is operated by driving the driver array through the contact arrays S- ₁ , S1-2 and the contacts γS1-1, γS1-2 are closed, and the DTH5 receiver of the terminal unit 4 is closed. A tone is sent to (16). At this time, the LED ₂ lights up, indicating that the relay RS ₁ is in operation, indicating that the tone is being transmitted. (The tone reception and transmission operation of the terminal will be described later.)

④ At the same time, the S ₁ output of the channel selector 7 is input to the 2 input and logic elements 101 of the line state determination unit 13 with 73.3 ms, and is output to CX ₁ in a cycle of 73.3 ms, and this output pulse is MT _1. And the L state of BS ₁ are input to the three-input NOR logic devices 302 and 303 and are output to CE ₁ and ME ₁ .

⑤ In addition, the input S ₁ to the 2 input and logic element 102 is in the "H" state CT ₁ becomes "L", the output "L" is input to the reset terminal of the integrated circuit (IC ₉ ) and CE ₁ by the operation of ①. It will be entered in this enable.

가 “L”상태로 되어 있어 출력 Q₀는 “H”상태가 되어 ④의 출력 CE₁이 “L”레벨 상태로 유지된다.⑥ of the C tone bar, CT ₁ output from when a transmission tone by tone transmission unit 18 of the terminal unit 4 receives the DTMF receiver 11 of the subscriber node (2) tone detector 12 " H ”level is input connected to the integrated circuit (IC ₁₁ ) and the reset

Is in the "L" state, so the output Q ₀ is in the "H" state, and output CE ₁ of ④ is kept in the "L" level.

⑦ CT ₁ becomes “H”, so that the 2 input end of ⑤ is applied to the reset terminal of the integrated circuit IC ₉ with the output of the element 102 in the “H” state, and the operation of the integrated circuit IC ₉ is restored. do.

입력되어 출력은 “L”가 되면서 집적회로(IC₇)의 리셋단에 입력되고 이네이블에는 73.3ms의 펄스가 입력됨으로서 출력 Q₀의 MTQ가 “H”상태가 되어 드라이버 어레이를 구동하여 릴레이 RM₁이 동작된다. 신호선에 릴레이 RM₁의 접점(γm₁)이 연동하면서 M선에 지기가 송출되게 된다.⑧ The output MT ₁ of the integrated circuit IC ₁₁ of the line state determination unit 13 is set to the “H” level, and the input terminal is input to the two-input NAND logic element 402 of the paper transmitter 10.

The output is “L” and is input to the reset stage of the integrated circuit (IC ₇ ). 73.3ms of pulse is input to the enable, so the MTQ of the output Q ₀ becomes “H” and drives the driver array to relay RM. ₁ is activated. As the contact point γm ₁ of the relay RM ₁ interlocks with the signal line, a branch is sent to the M line.

⑨ If the signal sent from the M line of the subscriber board 2 is received by the E line by the signal line operation of the terminal unit 4 and the relay RM ₁ , EX ₁ through the OP amplifier becomes “H” state and the line state judgment (13) a second input-and-logic device is input with the S ₁ (103) is recovered as the input to the reset terminal of the BCD up-counter integrated circuit (IC ₁₀₎ of the waits for the next operation ⑩ simultaneously integrated circuit (IC ₁₂₎ The output is “H” and the ME ₁ output of the three-input NOR logic element 303 maintains the “L” state. This connects the normal or signal line normal state to the computer via the inverter output of the VFG ₁ or VSG ₁ via a call.

⑪ However, when there is no output of CT ₁ and EX ₁ , ⑦ and ⑨ are not restored, and CE ₁ and ME ₁ are in continuous operation, so that the integrated circuits (IC ₉ and IC ₁₀ ) of the circuit state judgment unit 13 “H” output indicates “H” output on VFD ₁ (call failure) and VSB ₁ (signal failure) and turns on LED ₃ through 2 input OR logic device 201 to indicate a fault. It is input to the CPU of the computer through the interface circuit, and the monitor displays the text of the failure of the communication line or signal line.

Here, the computer part including the interface is a display unit that matches the present invention, and detailed description thereof will be omitted.

Next, the operation of the terminal unit 4 will be described. The terminal receives the tone transmitted from the subscriber board 2 of the main control unit 1 and transmits the return tone to check whether there is an abnormality in the line. Referring to FIG.

① A tone transmitted from the subscriber board 2 through the communication paths R1-1 and R1-2 is connected to the integrated circuit IC ₁₇ of the DTMF receiver 16 and amplified and input to the integrated circuit IC ₁₈ . The input tone is binary decoded and output and is pulsed to the integrated circuit IC ₁₉ of the tone detector 17 to analyze the corresponding tone (A tone). The pulse is drawn to the output stage Q.

When the output of the tone detector 17 changes from "H" to "L", the LDE _{4 is turned on} to indicate that an A tone has been received.

② At the same time, CT ₁ and M ₁ are output by 73.3 ms connected to the clock while being input to the reset terminal of the integrated circuit IC ₂₀ of the tone transmitter 18.

③ The CT ₁ is input to the R ₃ and C ₄ to the MFD integrated circuit (IC ₂₁ ) of the tone transmitting unit 18 to transmit the C tone and drive the relay RS ₁ through Any key Down. At this time, the tone transmission can be known through the LED ₁ . C tone is sent to the main control part through the contact (gamma) S1-1 and gamma S1-2 intervening in the telephone path S1-1 and S1-2.

④ In addition, M ₁ is inputted to the paper feeder 19 to drive the relay RM ₁ to move the contact γm ₁ to form a loop, and the branch received by the E line to the main controller 1 through the M line. Will be sent back. At this time, all the terminal parts 4-4 _n are operated with the independent local pulse transmitter 15.

All operations of the apparatus showing the preferred embodiment of the present invention are operated by a signal supplied with a pulse, the pulse being generated at the main pulse transmitter PG of the main controller 1 and receiving the pulse ( PG ′) is commonly connected to the plurality of subscriber boards 2, and the main pulse generator PG is configured to draw an appropriate pulse using a frequency divider of about 3.5 MHZ oscillation frequency. The detailed description is omitted since it is a well-known method. However, the time chart of each pulse train may be described as illustrated in the reference drawing (FIG. 4).

That is, the subscriber board 2 of the main control unit 1 has a time for transmitting _one tone CH ₁ and transmitting A tone AT ₁ to 73.3 ms, and receiving the C tone from the subscriber channel 2 and sending the timing up to 372 ms again. By monitoring the circuit for one channel until 586ms has elapsed, the operation is terminated and repeated operation of selecting another channel (CH ₂ -CH ₃ ) is performed again. Can be formed.

As described above, according to the present invention, the subscribers of the hundreds of lines can be displayed on the monitor before using the line by the continuous repetitive monitoring operation so that the line can be kept available at all times, thereby actively operating the line. It is a very excellent invention such as can be applied to the existing line system (6 wire or 4 wire).

Claims (2)

In order for main controller and terminal to be connected to both ends of subscriber's line in the call and to monitor the call line, the main control unit is provided with main pulse transmitting means for providing the pulses necessary for the scanning time and the circuit driving. A subscriber board having means for monitoring a line as a DTMF tone and a receiver and connecting the result to a computer through tone transmission and DTMF receiving means for checking and signal transmitter and checking means for checking signal lines, and 1: 1 The terminal unit to be connected is composed of an independent local pulse transmitting terminal, a DTMF reception for receiving the transmitted tone, a tone transmitting means for transmitting a return tone corresponding to the received tone, and a paper transmitting means. The check tone is sent to the terminal by the call, and the terminal sends the return tone corresponding to the check tone. A line monitoring method for a subscriber in a call by subscriber, characterized in that the state of the line as a received carrier tone is determined and the line in question has means for suspending the monitoring test. The main control unit and the terminal unit are connected to both ends of the subscriber's line in the call, and are configured as the subscriber board 2 and the terminal unit 4 to monitor the line in the call, and include a scanning unit 6 generating a scanning output, and Connect the channel selector 7 to select and output one channel during the scanning output and the one-channel check time, and the selected channel S ₁ of the channel selector 7 and the signal of the busy detection unit 8 ( Tone transmitter 9 for checking the call route initiated by BS) The MT ₁ signal and the signal ( ₁ ) of the main pulse transmitter PG for the signal line check are completed when the tone output of the tone transmitter 9 ends.

The receiver tone transmitting unit 10 for transmitting the branch to the signal line and the tone transmitting unit 9 and the DTMF receiving unit 11 for receiving the return tone of the terminal corresponding to the DTMF transmitting tone. A tone detection unit 12 for detecting a carrier tone and a line state determination unit for connecting a line partner determination result to a computer depending on whether the output of the tone detection unit 12 is detected during the selected channel S ₁ and for a limited inspection time (13) of the call detection unit 8 and the logic of the main pulse transmitting unit (PG) interposed with the relay contact (γm ₁ ) of the base station issuing unit 10 to detect the busy state of the terminal and the base station to be called out; A subscriber line 2 is formed as a pulse receiver PG 'and a line method selector 14 for generating and supplying different control pulses according to a clock pulse, and the call path of the tone transmitter 9 of the subscriber board 2 is established. DTMF receiver 16 receiving the watch tone receives the call on the receiving side A tone detector 17 for detecting a corresponding tone to the DTMF receiver 16 and a detection output of the tone detector 17 to a tone transmitter 18, the tone transmitter 18 being a telephone call. A line monitoring device for a call path subscriber, characterized in that it is configured to start a conveying tone responding to a monitoring tone and a paper sending part responding to a monitoring tone of a signal line.

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