KR20000045118A - Remote network synchronous apparatus of full electronic exchange - Google Patents

Abstract

PURPOSE: A remote network synchronous apparatus is provided to improve a reliability by duplicating a reference clock reception function, and to be easy to install and maintain by receiving the apparatus to a 1/2 shelf. CONSTITUTION: A remote network synchronous apparatus comprises a first circuit pack(network synchronous buffer board assembly,NSBA-1)(100) and a second circuit pack(network synchronization local master clock generation board assembly,NSLA)(200). The first circuit pack(100) consists of a reference clock receiving part(110), a slip detecting part(120), a reference clock generating part(130) for a phase difference detection, a clock distribution maintenance part(140), a clock receiving part(150) and a clock distribution part(160). The first circuit pack(100) receives a reference clock to output a phase difference comparison reference clock to the second circuit pack(200), performs a slip detection function, a clock distribution function and a maintenance function, and receives a clock from the second circuit pack(200) to generate a clock necessary for a time switch. The second circuit pack(200) consists of a reference clock receiving part(210) for a phase difference detection, a phase difference detector(220), a memory part(230) for an IPC, a lower processor communication part(240), an IPC communication part(250), a microprocessor control part(260), a D/A converter(270) and a main clock generating part(280). The second circuit pack(200) detects a phase difference between the reference clock and an internally generated clock, and performs a DP-PLL control function and a matching function with a lower processor.

Description

Remote Synchronous Device for Electronic Switching System

The present invention provides a remote exchanger or a private exchanger for accommodating a network synchronizer, wherein the network synchronizer device in a remote exchange device of an electronic switchgear is accommodated in a half shelf to facilitate installation and maintenance. The present invention relates to a remote network synchronizer device of an all-electronic exchanger capable of improving the reliability of the network synchronizer device by dualizing the reference clock reception function of the synchronization device.

In general, a network device in a remote switching device of an electronic switch such as a remote switch or a private switch performs a function of receiving a reference clock and generating a clock synchronized with the clock of the main switch and supplying it to a time switch. .

The remote manipulator device of the conventional all-electronic switchboard which performs such a function is composed of a clock generator and a clock distributor. The clock generator includes a reference clock receiver 11, a sleep detector 12, Network synchronization reference clock, which comprises a reference clock generator 13 for phase difference detection, receives a reference clock of a power station, provides a phase difference comparison reference clock to a main clock control circuit pack, and performs a slip detection function. board assembly (hereinafter referred to as 'NRCA') 10, the phase difference detecting reference clock receiving unit 21, the phase difference detecting unit 22, and the IPC memory unit 23 is composed of the reference clock and the self-generated clock A main clock control board assembly (hereinafter referred to as MCCA) 20 which detects a phase difference and provides a memory for an IPC between the network controller control processor circuit packs, a microprocessor controller 31, Network synchronization control processor board, which is composed of an IPC communication unit 32 and a lower processor communication unit 33 and performs DP-PLL (Phase Locked Loop) control function, IPC communication, and matching function with the lower processor. Assembly (hereinafter referred to as 'NCPA') 30, the digital / analog converter 41 and the main clock generator 42 to receive the digital phase difference control value calculated by the NCPA (30) The main clock generation unit generating a clock (Local Master Clock Generation Board Unit; hereinafter, referred to as 'LMGU' 40).

In addition, the clock distributor includes a clock distributor 51 and a clock receiver 52. The main clock buffer circuit pack receives a clock output from the LMGU 40 to generate and distribute a clock required for a time switch. Buffer board assembly (hereinafter referred to as 'MCBA') 50 and a system clock maintenance circuit pack (hereinafter referred to as 'TDMA') that performs the main clock distribution function maintenance function (60). It is composed of

In the conventional remote manipulator device configured as described above, the MCCA 20, the NCPA 30, the LMGU 40, and the MCBA 50 are redundant as shown in FIG. 2 (20-0 / 1, 30-0 /). 1, 40-0 / 1, 50-0 / 1), except for the two power supply circuit packs (POWER0 / 1) consists of all 10 circuit packs as shown in Figure 3 It is mounted on a synchronous back board (hereinafter referred to as 'RNBB').

However, since the conventional remote manipulator device configured as described above is composed of all ten circuit packs, the installation and maintenance of the manipulator device is not easy and the installation cost is high, and the NRCA 10 has a redundant configuration. There was a problem in that the reliability of the entire network device is lowered.

The present invention has been made to solve the above problems, the object of which is to reduce the number of circuit packs to accommodate the remote retractor device in a half-shelf, easy installation and maintenance, remote remanufacturer device The present invention provides a remote network synchronizer device for an electronic switching system that can improve the reliability of the network synchronizer device by dualizing the reference clock reception function of the electronic device.

1 is a block diagram of a remote network device of a conventional electronic switchgear,

2 is a circuit pack configuration diagram of a conventional network synchronizer device of a conventional electronic switchboard;

3 is a circuit pack mounting diagram of a remote manipulator device of the conventional all-electronic exchanger,

4 is a block diagram of a remote network synchronizer device of an electronic switch according to the present invention;

5 is a circuit pack configuration diagram of a remote synchronizer device of an electronic switch according to the present invention;

Figure 6 is a circuit pack mounting of the remote network device of the electronic switching system according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: NSBA-1 200: NSLA

110: reference clock receiver 120: slip detector

130: reference clock generator for phase difference detection 140: clock distribution maintenance unit

150: clock receiving unit 160: clock distribution unit

210: phase difference detection reference clock receiver 220: phase difference detection unit

230: IPC memory unit 240: lower processor communication unit

250: IPC communication unit 260: microprocessor control unit

270: digital / analog converter 280: main clock generator

In order to achieve the above object, the remote manipulator device of the all-electronic switch of the present invention integrates the functions of the conventional NRCA, MCBA, and TDMA to design three circuit packs into one circuit pack, and the MCCA, NCPA, and LMGU By integrating the function, three circuit packs are designed into one circuit pack, so that all four circuit packs, including the redundant circuits, constitute two half of the shelf with two power supply circuit packs.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the remote device for the remote electronic switch according to the present invention.

4 is a block diagram of a remote network device of an electronic switching system according to the present invention. The reference clock receiving unit 110, the slip detector 120, the phase difference detecting reference clock generating unit 130, and clock distribution maintenance are shown. A unit 140, a clock receiver 150, and a clock divider 160, which receive a reference clock of a power station, provide a phase difference comparison reference clock to a main clock generation circuit pack, perform a slip detection function, and distribute a clock. Network Synchronous Buffer Board Assembly (hereinafter referred to as 'Receive Clock' and 'System Clock Distribution Circuit' which performs functions and maintenance functions and receives and outputs the clock output from the main clock generation circuit pack to generate and distribute the clock required for the time switch. NSBA-1 '), the phase difference detecting reference clock receiving unit 210, the phase difference detecting unit 220, the IPC memory unit 230, the lower processor communication unit 240, the IPC communication unit 250, the micro Processor controller 260, a digital-to-analog converter 270, and a main clock generator 280, detects the phase difference between the reference clock and the self-generated clock, provides a memory for the IPC, DP-PLL control function and IPC A main clock generation circuit pack (hereinafter referred to as NSLA) 200 that performs communication, matching with a lower processor, and generates a basic clock.

As described above, the NSBA-1 (100) of the remote manipulator device of the electronic switch according to the present invention is a circuit pack configured by integrating the conventional NRCA (10), MCBA (50) and TDMA (60) into one, NSLA ( 200 is a circuit pack configured by combining the MCCA 20, the NCPA 30, and the LMGU 40.

5 is a circuit pack configuration diagram of a remote network synchronizer device of an electronic switching system according to the present invention. The NSBA-1 100 receives a reference clock and a system clock from the NSLA 200. The clock is outputted to the NSLA 200 again, and the NSBA-1 100 and the NSLA 200 are configured with redundancy (100-0 / 1, 200-0 / 1).

FIG. 6 is a circuit pack mounting diagram of a remote network synchronizer device of an all-electronic exchange according to the present invention, wherein a remote network synchronizer back board (hereinafter referred to as 'NSBB-1') has two power supply circuits. The pack (POWER0 / 1) and four circuit packs are mounted.

As described above, the remote manipulator device of the all-electronic switch according to the present invention has four circuit packs, so that the number of circuit packs is reduced compared to ten circuit packs of the conventional manipulator device, so that the space to be mounted on the back board is compared with the conventional one. Will decrease.

In addition, in the present invention, since the NRCA (10), which is conventionally configured as a single, is included in the NSBA-1 (100), the reference clock reception function is duplicated as it is configured to be redundant, so that the reliability of the entire remote control unit can be improved. do.

According to the remote manipulator device of the electronic switch according to the present invention configured as described above, the slip detection unit 120 in the reference clock receiving unit 110 of the NSBA-1 (100) receives the reference clock from the power station; Detects slip using the phase difference detection reference clock generator 130 generates a phase difference detection reference clock using the reference clock and provides the phase difference detection reference clock receiver 210 in the NSLA 200. .

Subsequently, when the phase difference detection reference clock receiver 210 in the NSLA 200 receives the phase difference detection reference clock generated by the phase difference detection reference clock generator 130 and outputs it to the phase difference detector 220, the phase difference detector In operation 220, the phase difference between the reference clock and the self-generated clock is detected and output to the microprocessor controller 260.

In this case, the IPC memory unit 230, the IPC communication unit 250, and the lower processor communication unit 240 perform an IPC communication function and a matching function with the lower processor.

Thereafter, when the microprocessor controller 260 inputs the phase difference detected by the phase difference detector 220 to calculate the digital phase difference control value, the microprocessor controller 260 converts the digital phase difference control value into an analog phase difference control value through the digital / analog converter 270. The generator 280 generates a main clock according to the analog phase difference control value and outputs the main clock to the phase difference detector 220 and the clock receiver 150 in the NSBA-1 100.

Then, the NSBA-1 (100) clock receiver 150 outputs the received clock to the clock distribution unit 160, distributes the clock to the necessary clock through the clock distribution unit 160, and outputs the clock to the time switch. .

At this time, the clock distribution maintenance unit 140 performs a maintenance function at the time of clock distribution.

As described above, according to the present invention, as the remote telesynchronizer device is implemented in a shelf of 1/2, the remote telesynchronizer backboard device, which was implemented in a conventional shelf, is reduced to 1/2 so that the installation and maintenance are as much as that. In addition, the number of circuit packs constituting the remote manipulator device is reduced from 10 to 4, thereby reducing costs and increasing utilization of the remaining shelf.

In addition, there is an advantage in that the reliability of the remote synchronizer device can be improved by dualizing the reference clock receiving function of the remote synchronizer device.

Claims (2)

It is composed of a reference clock receiver 110, a slip detector 120, a reference clock generator 130 for phase difference detection, a clock distribution maintenance unit 140, a clock receiver 150, a clock distributor 160, Receives the reference clock of the main clock generator circuit pack, provides the phase difference comparison reference clock, performs the slip detection function, performs the clock distribution function and the maintenance function, and receives the clock output from the main clock generator circuit pack. NSBA-1 (100) for generating and distributing the clock required for the switch, Phase difference detection reference clock receiving unit 210, phase difference detecting unit 220, IPC memory unit 230, lower processor communication unit 240, IPC communication unit 250, microprocessor control unit 260, digital / analog converter ( 270), and a main clock generator 280, which detects a phase difference between a reference clock and a self-generated clock, provides an IPC memory, and performs DP-PLL control, IPC communication, and matching with a lower processor. And, NSLA 200 for generating a basic clock. According to claim 1, wherein the NSBA-1 (100) and NSLA (200) is a remote network device of the electronic switchboard, it characterized in that the redundant configuration.