KR0168791B1 - Subscriber backboard for using analog and isdn in full electronic switch - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a mixed analog and ISDN subscriber backboard capable of serving both analog and ISDN subscribers in an electronic switchboard.

2. Technical problem to be solved by the invention

Since the analog subscriber board and ISDN subscriber board are separately installed, it is not possible to use the system efficiently because it occupies unnecessary space for mounting ISDN subscriber board when accommodating a large number of analog subscribers and a few ISDN subscribers. Solve the problem.

3. Summary of Solution to Invention

An analog subscriber control board for controlling an analog subscriber, an ISDN subscriber control board for controlling an ISDN subscriber, and an analog subscriber control board and an ISDN subscriber control board, respectively, are connected to each other to accommodate an analog subscriber board or an ISDN subscriber board. Obtain a subscriber backboard.

4. Important uses of the invention

Applied to subscriber board of electronic switchboard.

Description

Analog and ISDN Mixed Subscriber Backboard in Electronic Switching System

1 is a block diagram of a typical analog subscriber backboard.

2 is a block diagram of a typical ISDN subscriber backboard.

3 is a block diagram of an analog subscriber back board using a combination of an analog subscriber and an ISDN subscriber according to the present invention.

The present invention relates to an analog and ISDN mixed subscriber backboard capable of serving an analog subscriber or an ISDN subscriber in an all-electronic exchange.

In general, in the electronic switchboard, the analog subscriber board and the ISDN subscriber board are separately mounted to perform subscriber service.

FIG. 1 is a block diagram of a general analog subscriber board. When an analog subscriber control board 10 and an analog subscriber board 12 are initially mounted and supplied with power, the upper processor of the analog subscriber board 12 is an analog subscriber board. Check the mounting of (12). The check checks whether or not mounting is performed by reading certain data only when the analog subscriber board 12 is mounted using the SI signal. Thereafter, the hook-off states of the plurality of general subscriber telephones 14 are scanned at a predetermined interval to detect the moment when one subscriber telephone is hooked off, and then control the analog subscriber board 12 to give a dial tone to the corresponding subscriber. This converts the data Dr input from the time switch into an analog signal and transmits it to the corresponding subscriber phone via the analog subscriber board 12. When the general subscriber presses the phone number, the digit signal is input from the general subscriber phone. In this case, the MFC transmits the analog signal to the Dx line through the analog subscriber board 12, and in the case of the dial pulse, the analog subscriber board 12 is inputted. Is sent to the TxD line. At this time, the number is translated by the upper processor to ring the other subscriber through the time switch, and when the other party hooks off, a voice call path is formed to make a call. However, when the call is received, the host processor controls the analog subscriber board 12 in the reverse order of the above-described transmission process and rings the corresponding subscriber. Here, subscribers accept 32 channels, and one channel is composed of two wires, so there are 64 wires connected to the actual subscriber phone. And if the out test unit 16 inputs the MMC (Man Machine Command) for the test of the corresponding line in the case of the out test, the upper processor gives the analog subscriber board 12 a signal suitable for the control of the specific line, the specific line is analog Disconnect the part connected to the subscriber phone and the analog subscriber board 12 and connect the test path between the phone and the out test unit 16 to test the condition of the line. When the in-test unit 18 inputs a MMC (Man Machine Command) to test the corresponding line, in the case of the in-test, the host processor gives the analog subscriber board 12 a signal suitable for the control of the specific line so that the specific line is an analog subscriber. Disconnect the part connected to the telephone and analog subscriber board 12, and connect the test path of the subscriber board and the in-test unit 18 to test the state inside the subscriber board.

FIG. 2 is a block diagram of a general ISDN subscriber backboard. When the ISDN subscriber control board 20 and the ISDN subscriber board 22 are initially supplied to supply power, the ground of the port on which the ISDN subscriber board 22 is mounted is ISDN. Subscriber control board 20 reads and sends data and address to mounted ISDN subscriber board 22 to enable and write data to dual port RAM of ISDN subscriber board 22 for initialization. At this time, since the ISDN subscriber board 22 accommodates 8 channels, 16 wires are connected to the ISDN telephone 24. If the ISDN subscriber picks up the handset and receives the service, the ISDN subscriber board 22 and the ISDN telephone 24 use the 2B + D channel signaling method. Load data to the channel. After that, all data processing methods communicate with the ISDN subscriber control board 20 using the dual port RAM of the ISDN subscriber board 22 to report to the upper processor. Incoming subscriber sends 20Hz ring signal to telephone, but ISDN subscriber sends ringing signal to D-channel of 2B + D as data and receives ringer signal from ISDN telephone. The out-test unit 26 and the in-test unit 28, which are not described herein, differ only in the items that test one operation similar to the analog subscriber board described in FIG. In addition, only the voice signal is processed with the time switch.

As described above, the analog subscriber board and the ISDN subscriber board are conventionally mounted on a separate shelf. Therefore, when accommodating a large number of analog subscribers and a few ISDN subscribers, the ISDN subscriber board is mounted and the system is used with unnecessary space left over. There was a problem that cannot be used efficiently.

Accordingly, an object of the present invention is to provide a mixed subscriber backboard that can be mounted irrespective of an analog subscriber board or an ISDN subscriber board to solve the above problems.

The present invention for achieving the above object, in the analog and ISDN mixed subscriber backboard of the all-electronic switch, the analog subscriber control board for controlling the analog subscriber, the ISDN subscriber control board for controlling the ISDN subscriber, and the subscriber board The slot is connected to the analog subscriber control board and the ISDN subscriber control board, respectively, characterized in that consisting of a subscriber board connector that can be equipped with an analog subscriber board or ISDN subscriber board.

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

3 is a block diagram of a backboard that mixes analog subscribers and ISDN subscribers in accordance with the present invention.

An analog subscriber control board 40 for controlling an analog subscriber by detecting an installation state of the analog subscriber board, and controlling to transmit and receive a voice signal transmitted / received to an ISDN telephone by a time switch during a call processing service using an ISDN subscriber board;

ISDN subscriber control board 42 for controlling the ISDN subscriber by detecting the mounting state of the ISDN subscriber board and

A subscriber board mounting portion 44 connected to the analog subscriber control board 40 and the ISDN subscriber control board 42, respectively, to allow an analog subscriber board or an ISDN subscriber board to be opened;

When connected to the subscriber board mounting unit 44 and inputs a MMC (Man Machine Command) for the test of the corresponding line, the upper processor initially judges the analog subscriber board or the ISDN subscriber board at the time of the out test, and then signals suitable for the control of a specific line. The out-test unit 48 for testing a state of a line by connecting a test line and a test path with a regular phone or an ISDN phone 46, and disconnecting a portion of the subscriber line connected to the subscriber board by giving a.

When connected to the subscriber board mounting unit 44 and inputs a MMC (Man Machine Command) for the test of the corresponding line, the in-test processor gives a signal suitable for the control of a specific line to an analog subscriber board or an ISDN subscriber board during a specific line. It is composed of an in-test unit 50 for disconnecting the part connected to the general phone or the ISDN phone 46 and the subscriber board and connecting the test path of the general subscriber board or the ISDN subscriber board and the intest line to test the status of the subscriber. .

In the present invention, the analog subscriber board or the ISDN subscriber board is mixedly mounted in the same self, which accommodates the analog subscriber control board 40 and the ISDN subscriber control board 42 required for the ISDN subscriber board, respectively. It communicates by sending and receiving data and address appropriate to the subscriber's board, and accepts as many analog or ISDN subscriber boards as necessary and mounts them in the desired slot. At this time, the analog subscriber control board 40 or the ISDN subscriber control board 42 checks whether the subscriber board is mounted or not and determines whether it is an analog subscriber board or an ISDN subscriber board, and provides a subscriber service suitable for a function thereof. This saves space where no analog subscriber boards or ISDN subscriber boards are mounted.

However, when an analog subscriber board is mounted on the subscriber board mounting unit 44, a general telephone must be connected, and the analog subscriber service is performed by communicating with the analog subscriber report by dividing the control data and the voice data of the analog subscriber control board 40. do. That is, the analog subscriber board can be divided into control data and voice data. The control data transmits and receives five addresses and three modes (MOD) as serial data, and the voice data is serial data through the analog subscriber control board 40. Send and receive via time switch.

If the ISDN subscriber board is mounted on the subscriber board mounting unit 44, the ISDN telephone should be connected. At this time, for the ISDN subscriber service, control data is transmitted and received between the analog subscriber control board 40 and the ISDN subscriber board, and the voice data transmits and receives with the time switch through the analog subscriber control board 40 to perform a service. The control data is transmitted and received with the 16-bit address as parallel data of 16 bits, and the voice data is transmitted and received through the analog subscriber control board 40 because it is serial data.

That is, when the analog subscriber board is mounted on the subscriber board mounting unit 44, data is exchanged between the analog subscriber control board 40 and the analog subscriber board by five addresses and three modes to service the analog subscriber board, and the ISDN When the subscriber board is mounted, the ISDN subscriber control board 42 and the ISDN subscriber board exchange 16-bit parallel addresses and 16-bit parallel data to transmit and receive voice signals through the analog subscriber control board 40 to service the ISDN subscriber board. To do this.

In this way, ISDN subscriber's call processing uses 2B + D channel signaling method between ISDN subscriber board and ISDN telephone, and voice signal is processed as 2B channel and data and call setup is processed as D channel. In the conventional method of FIG. 2, the ISDN subscriber control board 20 matches the upper processor with the time switch. However, in the present invention, only the data and the call processing corresponding to the D channel are communicated through the ISDN subscriber control board 40. FIG. The voice signal-related data Dr, Dx, clock, and frame sync corresponding to 2B channels are processed by the analog subscriber control board 40 under the control of the upper processor, so that analog and ISDN subscribers can be simultaneously accommodated in the same self. To do so.

As described above, the present invention, by combining the analog subscriber board and the ISDN subscriber board in the same self to perform the analog subscriber or ISDN subscriber service, the subscriber board is mounted on the subscriber back board with the capacity of the subscriber board can afford Slots can be used, and by providing an analog subscriber board mounting unit and an ISDN subscriber board mounting unit separately provided in existing self shelves, there is an advantage of preventing waste of space and implementing an economical system.

Claims (1)

In the analog and ISDN mixed subscriber back board of all electronic switchboards, the analog subscriber board is detected to control the analog subscriber, and the ISDN subscriber board is used to transmit and receive voice signals to and from ISDN telephones through time switches during call processing services. The analog subscriber control board for controlling, the ISDN subscriber control board for controlling the ISDN subscriber by detecting the mounting state of the ISDN subscriber board, and the analog subscriber control board and the ISDN subscriber control board, respectively, A subscriber board mounting unit capable of mounting an ISDN subscriber board regardless of a slot, and a general subscriber phone or an ISDN telephone connected to the subscriber board mounting unit, and the analog subscriber control board and analog board are mounted when the analog subscriber board is mounted to the subscriber board mounting unit. Send and receive data between the subscriber boards by five addresses and three modes, and transmit and receive voice signals to the general subscriber phone connected to the analog subscriber board, and when the ISDN subscriber board is mounted, the ISDN subscriber control board. And a 16-bit parallel address and 16-bit parallel data between the ISDN subscriber board and the ISDN subscriber board to transmit / receive a voice signal to the ISDN telephone through the analog subscriber control board so as to service the ISDN subscriber board. Analog and ISDN mixed subscriber backboard of electronic exchange.