KR0156862B1 - Subscriber concentration three stage tactical switch - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to the technical field of the tactical exchanger.

2. The technical problem to be solved by the invention

The present invention provides a subscriber focused three-stage tactics exchanger having excellent mobility and operability in a tactical environment.

3. Summary of Solution to Invention

The present invention provides a subscriber intensive type tactical switch comprising: a power supply unit (10) for supplying power, including a first power supply unit, a second power supply unit, and a ring power supply unit, and a plurality of control functions to perform overall operation and control of the system A central processing unit (20), a switching unit (30) connected to the central processing unit (20), and performing a function for exchanging a subscriber and equipment bidirectional multiple lines of ten lines, and the switching unit (30) A clock and front panel connection unit 40 which is connected to generate a main clock signal and performs a signal supply function for operation of the system, and is connected to the switching unit 30 to remotely access information of a plurality of channels according to an operation mode. A multi-line connection unit 50 for transmitting a signal, a subscriber signal connection unit 60 connected to the switching unit 30 to perform a common connection control function for subscribers of ten lines, and the subscriber signal contact An analog subscriber connection unit 70 connected to the sub-unit 60 to perform a function of coding a voice signal into a digital signal, and a subscriber terminal connected to the subscriber signal connection unit 60 to transmit a digital terminal in echo cancellation and to process a signal. The digital subscriber access unit 80, which performs the function of accessing the switching unit 30, is connected to the analog subscriber connection unit 70 and the digital subscriber connection unit 80 to connect the subscribers of the ten lines of the two-wire system to provide overvoltage and overcurrent. And a terminal connection part 90 that performs a function of preventing and a mating line part 100 that is connected to the multi-line connection part 50 and performs a function for providing a communication means during a normal operation or initial installation. .

4. Important uses of the invention

The present invention is suitably used in an exchanger.

Description

Subscriber centralized three-stage tactical exchange

1 is a block diagram showing a switch according to the prior art.

2 is a block diagram showing the operation of wireless and wired equipment in accordance with the present invention.

3 is a block diagram illustrating a configuration of an exchange according to the present invention.

* Explanation of symbols for main parts of the drawings

10: power supply unit 20: central processing unit

30: switch 40: clock and front panel connection

50: multi-line connection 60: subscriber signal connection

70: analog subscriber connection 80: digital subscriber connection

90: terminal connection part 100: rudder wire part

The present invention relates to an exchanger, and more particularly, to a three-stage operational tactical exchanger in a subscriber concentration scheme.

The exchange developed for the tactical operation of the prior art has been designed and developed to accommodate a 30-line subscriber and to carry two people. 1 is a block diagram illustrating the configuration of an exchange according to the prior art. Referring to FIG. 1, the power supply unit 10 of the exchanger is designed to operate as a direct current (DC) power input, and the control unit 20 is divided into a main control unit for the entire system operation and a signal processing unit for signal processing of the subscriber. Loss has a multiprocessor architecture. The switching unit 30 converts the subscriber's voice signal into digital and collects it in byte units to perform exchange. The subscriber connection unit 40 can connect more than four subscribers per card to accommodate 30 lines. The card size has been developed to 160 × 233mm, and the size of the whole equipment should be more than 2 people. The problems of this prior art are as follows. First, since the power supply is limited to DC power, there are many limitations in the operation of equipment such as the use of emergency power such as battery and time limit when the DC power is cut off in the switchgear which must be operated for 24 hours every day. Second, since the configuration of the control unit is a multiprocessor structure, the design is over-designed in terms of equipment scale, and reliability of the control unit is reduced. Third, by accepting subscribers about 30 lines, it is inevitable to operate equipment in an tactical situation where the subscribers are advantageously located in a concentrated area and remotely distributed on a small scale (less than 10 lines). Fourth, a relatively large amount of power is consumed to accommodate 30-line subscribers, limiting the operation time during emergency operation (battery operation, etc.). Fifth, the multiplexed signal connection speed for connecting to the main switching network is relatively increased to 1024 megabits per second (Mbps), reducing the transmission distance to ½ for 256 kilobits per second (hereinafter, Kbps). Sixth, the transmission speed is relatively higher than twice, so it is inevitable to use a dedicated line and difficult to transmit a general field line. Seventh, the size of two or more people must be transported, resulting in poor maneuverability and operability in tactical situations. Eighth, the initial installation of equipment and the other short-circuit function as an emergency call means are not accommodated. Ninth, there is a problem that the self-diagnostic function to facilitate the operation, maintenance, and repair of the equipment is weak.

Accordingly, an object of the present invention is to provide a three-stage tactical switch in a subscriber focusing method having excellent maneuverability and operability in a tactical environment.

Another object of the present invention is to reduce the size of the exchange equipment by more than half of the conventional exchange, and to provide a tactical exchange that can be interlocked and operated up to three by connecting 10-line subscribers per unit equipment to a six-line multi-line.

Still another object of the present invention is to allow multiple lines to be variable (512Kbps or 256Kbps) so as to be spaced up to 4Km between unit equipment, to expand the service area that can operate the exchange equipment and during initial installation or emergency operation of equipment. The objective is to provide a tactical exchanger designed to enable stand alone operation of equipment by adding a rudder line function and a self-diagnosis function.

According to the technical idea of the present invention for achieving the above objects, in the subscriber-intensive tactical switch, a power supply unit 10 for supplying power including a first power supply unit, a second power supply unit and a ring power supply unit, and a plurality of Central processing unit 20 for controlling the overall operation and control of the system with a control function, and is connected to the central processing unit 20 performs a function for the exchange processing to the subscriber and equipment bi-directional multiple lines of ten lines and the switching unit 30 and a clock and front panel connecting portion 40 connected to the switching unit 30 to generate a main clock signal and to perform a signal supply function for operating the system, and to the switching unit 30. And a multi-line connection unit 50 for remotely transmitting information of a plurality of channels according to an operation mode, and a common connection control function of subscribers of ten lines connected to the switching unit 30. A subscriber signal connection unit 60 to perform, an analog subscriber connection unit 70 connected to the subscriber signal connection unit 60 and performing a function of coating a voice signal into a digital signal, and a connection to the subscriber signal connection unit 60 And a digital subscriber connection unit 80 which transmits a digital terminal with echo cancellation, processes a signal, and connects the exchange unit 30 to the analog subscriber connection unit 70 and the digital subscriber connection unit 80. Terminal connection unit 90 for connecting the subscribers of the ten lines and preventing overvoltage and overcurrent, and for providing communication means at the time of initial installation or normal operation by being connected to the multi-line connection unit 50 Characterized in that it comprises a rudder line portion 100 to perform a function.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

It should be noted that like elements and parts in the figures represent the same numerals wherever possible.

The main operation concept of the equipment of the present invention is as follows. The present invention can operate 10 lines (analog subscriber, digital subscriber) independently, and can be connected to the third stage by extending the unit equipment accommodated by 10 lines up to 4km in each section. Here, the transmission medium connecting each section can be wired or wireless, and in the case of a wired wire, it is field level or higher, and for the wireless transfer, it can transmit up to 6km to 10km over a visible distance using a carrier equipment. 2 is a simplified diagram showing an operation concept according to the present invention. Referring to FIG. 2, the main switching network 3, the switching device 5 for connecting the main switching network 3 and the wireless transport equipment 7, and the wireless transporting device 7,9 connected to the switching device 5 and carry a signal; The first, second, and third tactical exchangers 11, 13, and 15 are connected to the wireless transport equipment 9 and are installed every 4 km by wires. Here, the subscriber concentration ratio has a ratio of 2: 1-5: 1.

3 is a block diagram showing the construction of a tactical exchange machine according to the present invention. Referring to FIG. 3, the configuration includes a first power supply unit such as an AC / DC (hereinafter referred to as A / D) power supply unit, a second power supply unit such as a C / DC (hereinafter referred to as D / D) power supply unit and a ring power supply unit. A power supply unit 10, a central processing unit 20 having various control functions of the equipment, a switching unit 30 connected to the central processing unit 20, and having a function for exchanging with a 10-line subscriber and equipment bidirectional multi-line, and the switching unit 30 A clock and front panel connector 40 connected to generate a main clock signal of the equipment and having a signal supply function for operation of the equipment, and 256Kbps (traffic six channels) depending on the operation mode connected to the switch 30; Subscriber signal connection unit 60 having a multi-line connection unit 50 having a function of remotely transmitting information of 512 Kbps (traffic 10 channel), and a subscriber signal connection unit 60 connected to the switching unit 30 and having a common access control function for subscribers of 10 lines; Connected to An analog subscriber access unit 70 having a function of processing a CVSD digital signal coding process, and a subscriber station connected to the subscriber signal connection unit 60 to transmit a digital terminal through an echo cancellation method (ECM) and process the signal A digital terminal connection unit 80 having a function of connecting to the switching unit 30, and a terminal connection unit 90 connected to the analog subscriber connection unit 70 and the digital subscriber connection unit 80 to connect a two-wire 10-line subscriber and protect the equipment against overvoltage and overcurrent. And, it is connected to the multi-line connection unit 50 is composed of a haptic line unit 100 having a function for providing a basic communication means when the equipment is operating normally or the initial equipment installation. Looking at the operation, first, the power supply unit 10 that supplies the power of the equipment is AC (AC) AC / DC power converter that supplies + 24V to the power supply by converting the AC power (110V, 220V) to direct current (DC) power supply It is composed of DC / DC power supply and DC / DC power supply which generates + 5V, + 12V, -48V and ring signal by receiving + 24V, and each of them is separated from each other for easy replacement and maintenance. It was. The central processing unit 20, which is in charge of the main control function of the equipment, operates the system's operation system, call processing, network management, information management, diagnostic processing, signal processing, front panel control, and subscriber control program. It performs overall operation and control, and controls switching unit 30 to exchange subscriber information for 10 ten-line subscribers. The subscriber access point is controlled by controlling the subscriber signal access point 60, the analog subscriber access point 70, and the digital subscriber access point 80, and analyzes and processes signals input and output through the two multi-line access points 50 and connects them to the switching network. It is also responsible for front panel signal access for equipment operation.

In order to perform the above functions, the central processing unit 20 employs an 8-bit processor, and is electrically programmed and erasable memory (EPROM) 256 kilobytes (KByte), static random access memory (SRAM) 128 bytes. 8KByte Nonvolatile Static RAM (NVSRAM) for memory backup is installed to maintain basic operation information such as subscriber operation information when power is cut off or turn off. Next, the switching unit 30 is composed of 64 x 64 time switches for exchanging two 6-10 lines of multi-channels, 10 subscriber channels, and 16 various signal channels. A BCH (a kind of forward error correction code) processing unit is mounted for processing the connected common line signal, and has a function of dividing and supplying various clock signals required by the system. Tone generation was processed digitally and mounted in ROM (Read Only Memory). The clock and front panel connection unit 40 has a function of receiving and restoring a clock received from another device from the multi-signal connection unit 50 and multiplying it with a phase synchronization circuit of 8 mega Hertz (MHz) to provide the clock generation supply unit of the switching unit 30. And it supplies and controls the signal for connecting the keypad mounted on the front panel and the display. The multi-signal connector 50 performs a long distance transmission function for connecting another device or a second or third device of the remote, so that the two multi-signal connector 50 is mounted in the present invention. The line coding method for long distance transmission is HDB3 code system and complies with the European military communication standard (EUROCOM D / 1). The speed of multiple signals transmits 256Kbps (6 channels) or 512Kbps (10 channels) multiple signals, depending on the operating mode. In the case of 256Kbps, it has a maximum transmission capacity of 4Km. The signal received at the multi-signal connection 50 is bipolar, and it recovers the data and clock from this signal, finds the frame synchronization signal sent from the transmitter, arranges the frame, and then sends the data to the exchange 30. The clock signal is supplied to the phase synchronization circuit of the clock and front panel connections 40 to match the system clock. The subscriber signal connection unit 60 receives the digital functions of the analog and digital subscriber connection units 70 and 80, receives the subscriber control signal from the central processing unit 20, and connects the digital voice signals of the analog subscriber connection unit 70 and the digital subscriber connection unit 80 to the switching unit 30. It is responsible for allocating the digital voice signal received from the exchange to the subscriber channel. The analog subscriber interface 70 accommodates two analog subscribers per card and is configured to accommodate up to 10 lines of equipment. Detects the call of the idle subscriber [hook on / off] signal to be transmitted to the central processing unit 20 through the subscriber signal connection unit 60, and a complex multi-frequency signal for recognizing the number of the subscriber to call DTMF) reception function. The main function is to convert the analog audio signal to 32KHz by A / D conversion by continuous variable slope delta modulation (CVSD) coating, which is a kind of adaptive delta modulation (ADM). Performs the function of converting the audio signal input from the analog signal CVSD D / A. The digital subscriber access unit 80 is a module for connecting a digital terminal (telephone) and has a function of two-wire transmission by the echo cancellation method (ECM). The line code system uses 2Binary 1 Quoternary (2BIQ) codes and has a maximum transmission capacity of 4km. Two ports are installed per card, and the backplane design is designed to be compatible with the analog subscriber connection 70. The free slot concept allows two types of subscriber connections to be freely mounted. The terminal connection 90 guarantees 20 terminals on the back of the equipment to connect two-wire 10-line subscribers, has overvoltage and overcurrent protection for each subscriber line inside, and includes EMI shielding. Other short circuit line 100 is for equipment installation and emergency call means between other equipment or remote equipment through two multi-signal connections, and if only power is supplied to the equipment and only the multi-signal connection line is normally connected, communication between both ends is possible. It has a function of supplying a call signal, which is a signal for calling a short-circuit line, and a signal (release signal) upon release request. The haptic 100 is mounted inside the front of the equipment, focusing on minimizing the equipment by making full use of the internal space of the equipment.

According to the present invention described above has the following effects. First, it is a compact, lightweight, and reliable equipment suitable for tactical communication environment and has the advantages of maneuverability and operability. Second, economical function and productivity can be expected through optimal design by implementing function that fits equipment size and size. Third, it has the effect of being flexible and improving the survivability of equipment by accommodating various power sources. Fourth, by providing transmission capacity up to 4km using field lines, it is easy to accommodate independent subscribers in remote locations and has an effect of expanding service area.

Although the present invention described above is limited to, for example, the drawings, the same will be apparent to those skilled in the art that various changes and modifications can be made without departing from the technical spirit of the present invention.

Claims (2)

In the subscriber-oriented tactical switch, a power supply unit 10 for supplying power including a first power supply unit, a second power supply unit, and a ring power supply unit, and a central processing unit for performing overall operation and control of the system with a plurality of control functions A switching unit 30 connected to the central processing unit 20 and performing a function for exchanging subscriber and equipment bidirectional multiple lines of ten lines, and connected to the switching unit 30 A clock and front panel connection unit 40 for generating a clock signal and performing a signal supply function for operating the system, and a function of remotely transmitting information of a plurality of channels according to an operation mode connected to the exchange unit 30. A multi-line connection unit 50 for performing a connection, a subscriber signal connection unit 60 connected to the switching unit 30 to perform a common connection control function of subscribers of ten lines, and the subscriber signal connection unit 60. An analog subscriber connection unit 70 which is connected to perform a coating process of a voice signal into a digital signal, and is connected to the subscriber signal connection unit 60 to transmit a digital terminal to the echo canceller and process a signal to the switching unit 30. A digital subscriber access unit 80 that performs the function of connecting, and the analog subscriber connection unit 70 and the digital subscriber connection unit 80 are connected to connect the subscribers of the ten wires and to prevent overvoltage and overcurrent. Subscriber concentration unit characterized in that it has a terminal connection portion 90 and the other line portion 100 is connected to the multi-line connection portion 50 to perform a function for providing a communication means during the normal operation or initial installation Tactical exchanger of the type. 2. The tactical switch according to claim 1, wherein the channel of the multi-line connection is 6 traffic or 10 traffic.