KR0149643B1 - Ring relay control method & device of analog subscriber board - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring relay control device of an electronic switch, and in particular, the microprocessor synchronizes the zero-crossing with the ring control of the ring signal to be sent from the analog subscriber board to the called party. To control the relay.

Since the microprocessor of the control board reads the status of the subscriber board through the relay control data applied from the peripheral device, unnecessary setting of data is excluded from the peripheral device, thereby providing reliability in the operation of the ring relay. The zero-crossing pattern implemented in the back plan is eliminated to simplify the design and configuration of the circuit, providing high integration and lightweight.

Description

Ring relay control method and apparatus for analog subscriber board

1 is a block diagram of a ring relay controller configuration in a conventional subscriber board.

2 is a block diagram of a ring relay controller in an analog subscriber board according to the present invention.

3 is a flowchart for realizing a ring relay control method in the present invention shown in FIG.

* Explanation of symbols for main parts of the drawings

10: peripheral device 20: control board

21: Receiver 22: Driver

23: timing circuit section 24: buffer

25: common memory unit 26: local memory unit

27: microprocessor 30: subscriber board

31: codec 32: flip-flop

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring relay control device of an electronic switch, and in particular, the microprocessor synchronizes the zero-crossing with the ring control of the ring signal to be sent from the analog subscriber board to the called party. The present invention relates to a ring relay control method and apparatus therefor for controlling an analog subscriber board.

In the analog subscriber board of the conventional electronic switchboard, the ring relay controller includes a peripheral device 10 and a peripheral device 10 for detecting an incoming signal applied through an arbitrary trunk line as shown in FIG. The control board 20 which transmits to the subscriber board 30 side after performing a predetermined process with respect to the ring signal generation request applied from the subscriber, and an incoming ring to the corresponding subscriber side according to the signal applied from the control board 20. The subscriber board 30 drives a ring relay for transmitting a signal. The control board 20 includes a receiver 21 for receiving an overall signal applied from the peripheral device 10 and a received signal. Driver 22 driving the analog subscriber board according to the present invention, a buffer 24 temporarily storing a ring generation request signal applied through the driving of the driver 22, and a call reception temporarily stored in the buffer 24. It consists of a timing circuit part 23 which sets a sending interval with respect to a ring sending signal. The subscriber board 30 also provides a plurality of codecs 31 for demodulating signals for incoming ring transmissions applied from the buffer 24 of the control board 20, and for incoming ring transmissions applied from the codec 31. A flip-flop 32 for latching synchronization with respect to a zero crossing clock applied from a main board, and a ring relay 33 for performing a predetermined operation according to a signal latched and synchronized by the flip-flop 32. )

At this time, one subscriber board (accommodating 32 subscribers) takes at least four flip-flops 32 for latching synchronization of an incoming signal to zero crossing, and one shelf is equipped with sixteen subscriber boards. The flop 32 is taken.

Referring to the operation of the ring relay control in the conventional analog subscriber boards configured as described above are as follows.

When the peripheral device 10 applies a ring relay control command to the control board 20 to send a ring to the called party according to the incoming call request detected, the receiver 21 of the control board 20 receives the peripheral device. After receiving the control command applied from (10), it temporarily stores in the buffer 24 side according to the drive signal of the driver 22. After that, the driver 22 applies a predetermined driving signal to the timing circuit unit 23 so as to control a ring relay control command stored in the buffer 24 side according to a predetermined time elapsed. It is applied to the (31) side. When the codec 31 demodulates an applied control command and applies it to the flip-flop 32 as a data signal, the flip-flop 32 waits for a relay control command applied from the codec 31 as an input of the data signal. When the zero crossing signal is applied from the main board in the state, the signal is synchronized with the applied signal, and the ring relay driving signal is applied to the ring relay 33 to transmit a predetermined ringing signal to the subscriber side requiring call connection. Output

As described above, in the conventional analog subscriber board, the relay control device for the incoming ring signal transmitted to the subscriber side for the call connection is different depending on the codec type of the subscriber board according to the incoming request from which the peripheral device is detected. Since ring relay control data must be outputted, there is a problem in that the memory of the line and the peripheral device is unnecessarily expanded and used. Since a zero crossing data line applied from the main board must be connected to each subscriber board, a pattern is applied to the back board and the subscriber board. There was an increasing problem.

In addition, since the flip-flop for latching the ring relay control signal has to be provided with a predetermined number of subscriber boards, there is a problem that the system is enlarged and high integration cannot be realized.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to drive a ring relay by synchronizing a ring relay control command for generating an incoming ring detected by a peripheral device with the microprocessor of the control board at zero crossing. In order to control the subscriber board, the integration of the subscriber board is realized, and unnecessary program setting of the peripheral device is excluded to prevent the load of the subscriber board.

A feature of the present invention for achieving the above object is a first step of storing subscriber subscriber ring transmission control data of a peripheral device detected and applied from a network, in a subscriber memory ring relay control method of an electronic switch. And a second process of accessing the data stored in the common memory means after the execution of the first process, reading the data on the ring relay control and information on the subscriber line, and storing the stored data in the local memory means, and main after executing the second process. When the zero crossing signal is interrupted from the board, the third process of latching the ring relay control signal stored in the local memory means to match the synchronization and transmitting the incoming ring signal through the corresponding subscriber ring relay according to the subscriber line information is performed. A ring relay control method for an analog subscriber board comprising a The.

In addition, another feature of the present invention is a peripheral device for detecting an incoming request signal requesting a call connection with any subscriber from the network, and for selecting the subscriber in accordance with the incoming request detected by the peripheral device for outputting a ring signal An analog subscriber board of an all-electronics exchanger comprising a control board for controlling the overall operation and a subscriber board for outputting an incoming ring signal to the corresponding subscriber side selected as the control board, wherein the incoming subscriber ring transmission data applied from the peripheral device is received. A common memory means for storing, local memory means for storing a relay control signal and a signal for designating a subscriber line among data stored in the common memory means, and a relay stored in the local memory means according to a zero crossing signal interrupted from the main board. Control signal and designated subscriber To latch the information to provide a ring relay control unit of the analog subscriber boards according to claim 1, further comprising a microprocessor for controlling the ring relay of the subscriber boards.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a ring relay controller in the analog subscriber board according to the present invention, and FIG. 3 is a flowchart for realizing a ring relay control method in the present invention shown in FIG.

As can be seen in the figure, the analog subscriber board according to the present invention comprises a peripheral device 10, a control board 20 and a subscriber board 30, which is any device applied from the network. Detect incoming request signal from subscriber. The control board 20 includes a receiver 21, a driver 22, a timing circuit unit 23, a buffer 24, a common memory unit 25, a local memory unit 26, and a microprocessor 27. The receiver 21 receives an incoming request signal applied from the peripheral device 10. The driver 22 drives an operation for the incoming ring signal output to the incoming request. The common memory unit 25 stores a signal for controlling the subscriber relay in a predetermined area in the incoming request signal received from the peripheral device 10 through the driving of the driver 22. The microprocessor 27 latches synchronization of the relay control signal with respect to the incoming request applied from the common memory unit 25 in accordance with the zero crossing signal interrupted from the main board. The buffer 24 temporarily stores a relay control signal that is synchronized and latched from the microprocessor 27 to adjust the operation of the relay. The local memory unit 26 stores information about ring relay control signals and subscriber boards to be processed by the microprocessor 27 in a relay control signal for an incoming request applied from the peripheral device 10.

In addition, the subscriber board 30 is composed of a plurality of codecs 31 and a ring relay 33. The codec 31 demodulates a relay control signal applied from the buffer 24 of the control board 20 to ring relay. The switching of 33 is operated.

Referring to Figure 3 of the accompanying drawings, the operation of the present invention having the function as described above is as follows.

When a signal for an incoming request applied from the network is detected by the peripheral device 10, the peripheral device 10 controls the signal for the detected incoming request to operate the ring relay 33 of the subscriber board 30. The receiver 21 stores the data in a predetermined area of the common memory section 25 (step 101). Thereafter, the microprocessor 27 of the control board 20 accesses the incoming request signal stored in the predetermined area of the common memory unit 25 to detect whether it is a signal for controlling the ring relay 33 (step 102). . If the detection of the step 102 is not a signal for controlling the ring relay 33, if a general routine is performed and data for controlling the ring relay 33 is detected, the microprocessor 27 adds subscribers from the detected ring relay control signal. The line information and the data for controlling the relay are newly registered and stored in the predetermined area of the local memory section 26 (step 103). The microprocessor 27 then detects whether or not a zero crossing signal applied as an interrupt from the main board is applied (step 104). When the zero crossing signal is detected in step 104, the subscriber line information and the relay control data stored in the local memory unit 26 are latched, and the incoming ring is sent through the buffer 24 in synchronization with the zero crossing signal. The data is transmitted to the subscriber board 30 side for operation (step 105, step 106). After that, the codec 31 of the subscriber board 30 demodulates the relay control data applied from the control board 20 and applies the demodulated control data to the ring relay 33 to operate an arbitrary relay corresponding to the incoming request.

As described above, the present invention reads the status of the subscriber board through the relay control data applied from the peripheral device by the microprocessor of the control board, thereby eliminating unnecessary data setting in the peripheral device, thereby providing reliability in performing the operation of the ring relay. In addition, the pattern of zero crossings implemented in the back plan of the subscriber board is excluded to simplify the design and configuration of the circuit, thereby providing high integration and light weight.

Claims (2)

A method of controlling a subscriber board ring relay of an electronic switching system, comprising: a first process of storing incoming subscriber ring transmission control data of a peripheral device detected and applied from a network in a common memory means, and after executing the first process, common memory means A second process of accessing the data stored in the terminal and reading the data on the ring relay control and the information on the subscriber line and storing the information in the local memory means; and if the zero crossing signal is interrupted from the main board after executing the second process, And a third step of latching the ring relay control signal stored in the means to match synchronization and transmitting an incoming ring signal through the corresponding subscriber ring relay according to the subscriber line information. Relay control method. A peripheral device for detecting an incoming request signal requesting a call connection with an arbitrary subscriber from the network, a control board for controlling an overall operation for selecting a corresponding subscriber and outputting a ring signal according to the incoming request detected by the peripheral device; And an analog subscriber board of an all-electronic switch comprising a subscriber board for outputting an incoming ring signal to a corresponding subscriber side selected as a control board, comprising: common memory means for storing incoming subscriber ring transmission data applied from the peripheral device; Local memory means for storing a relay control signal and a signal for designating a subscriber line among data stored in the memory means, and latching the relay control signal and designated subscriber line information stored in the local memory means in accordance with a zero crossing signal interrupted from the main board. By the above Here analog subscriber boards ring relay control device for a microprocessor that controls the relay ring of boards characterized by further comprising.