KR19980027456A - Subscriber Matching Device of Electronic Switching System - Google Patents

Abstract

According to the present invention, subscriber matching of an electronic switch having a common control board for TDM-converting and applying information through the subscriber lines A1-An to the switching device 4 under the control of the processor 2 is provided. Apparatus, in which the common control boards (11, 12) are redundantly configured between the subscriber lines (A1-An) and the processor (2) and the switching device (4), and collectively in the common control boards (11, 12). The apparatuses D1 and D2 are configured.

That is, the present invention can secure the stability of the call by duplexing the subscriber matching device, and the switching device can be simplified by configuring the concentrating device in the subscriber matching device.

Description

Subscriber Matching Device of Electronic Switching System

The present invention relates to an electronic switchboard, and more particularly, to a subscriber matching device of the electronic switchboard.

The electronic switching system includes an access switching subsystem (hereinafter referred to as an ASS), an interconnection network subsystem (hereinafter referred to as an INS), and a central control subsystem (hereinafter referred to as a CCS). .

Here, the ASS is provided with a subscriber and repeater line matching device, a time switch, a frame relay handler, an optical subscriber access device, various signaling devices, a packet handler, and the like. It performs the ubiquitous function, and can be increased by ASS unit if necessary, so the system has a horizontally distributed structure.

INS connects between ASS, or between ASS and CCS, and performs the function of generating and distributing system clocks by providing number translation, route control, space switch network control and network synchronizer. Fiber between INS and ASS It is a link and is called a data link.

CCS is a device that performs overall operation and maintenance of the system, and performs network management, test and measurement, billing statistics, I / O device control, and dialogue with other systems.

In the electronic switch system having such a configuration, the ASS includes the subscriber matching unit as described above, and the subscriber matching unit functions to monitor the state of the subscriber or the relay line, and sends information to the call processor according to the change of the subscriber or the relay line. Do it. That is, the subscriber matching unit detects a state such as a subscriber picking up or releasing a handset, and transfers this information to the call processing unit to perform a necessary operation for the subscriber.

1 shows the configuration of a subscriber matcher that performs this function. As shown, a plurality of subscriber lines (A1-An) are connected to a common control board (hereinafter referred to as CCB) 1, which CCB 1 is controlled by the processor 2. The information on the subscriber lines A1-An is applied to the switching device 4 by TDM processing. Call processing of subscribers, which is TDMized and applied to the switching device 4, is performed through a separate number translator or the like, and a call path is established at a time switch and a space switch in the switching device 4, thereby making a call between the subscribers. Is formed. At this time, in the normal exchanger, the condenser DLC which performs a condensing function is formed in the switching device 4, and is comprised so that a condensing function may be performed.

However, such a conventional subscriber matching device has a problem in that when the CCB 1 between the subscriber lines A1-An and the switching device 4 is broken, the call path is cut and a call cannot be made.

In addition, in the conventional subscriber matching device, as described above, the condensing device (DLC) is configured in the switching device 4, so that the terminals of the switching device 4 become complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a subscriber matching device of an all-electronic exchange having duplicated CCBs in the subscriber matching device.

Subscriber matching device of the electronic switch in accordance with the present invention, the subscriber matching device of the electronic switch having a common control board (TDM) converts and applies the information through the subscriber line to the switching device under the control of the processor In this regard, the common control board) is redundantly configured between the subscriber line and the processor and the switching device, and each of the concentrating devices is configured in the common control board.

1 is a block diagram of a subscriber matching device of a conventional electronic switchboard.

2 is a block diagram of a subscriber matching device of an electronic switching system according to the present invention.

Explanation of symbols for the main parts of the drawings

1: common control board 2: processor

4: switching device 11,12: common control board

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

FIG. 2 is a block diagram of a subscriber matching device of an electronic switching system according to the present invention. As shown in FIG. 2, subscriber lines A1-An are connected to two CCBs 11 and 12, respectively. 12 are respectively connected to the processor 2 and the switching device 4.

That is, since the CCBs 11 and 12 have a redundant configuration, the CCBs 11 and 12 are driven in an active part and a standby by state, respectively. At this time, when an abnormality occurs while the CCBs 11 or 12 in the active state are being driven, the CCBs 11 or 12 that have been driven in the standby state are automatically switched to the active subscriber line A1-An and the processor 2. And maintain a communication path with the switching device 4.

In addition, in the CCBs 11 and 12 of the present invention, the concentrating devices D1 and D2 are configured as shown. That is, the CCBs 11 and 12 of the present invention primarily collect information through subscriber lines A1-An and apply it to the switching device 4. At this time, since the concentrating device is configured inside the switching device 4 as in the related art, the concentrating rate can be substantially increased in the all-electric exchanger of the present invention.

In addition, in the case where the same collection rate is maintained as in the conventional all-electronic exchanger, the collection rate of the switching device 4 can be lowered because the collection rate of the switching device 4 can be lowered since it is the state where the collection devices are primarily collected in the collecting devices D1 and D2. Simplify (can be the number of input terminals for condensation).

As described above, according to the present invention, the stability of the call can be secured by duplexing the subscriber matching device, and the switching device can be simplified by configuring the aggregation device in the subscriber matching device.

Claims (2)

Subscriber matching device of an electronic switchboard having a common control board (TDM) converting and applying information through the subscriber lines (A1-An) to the switching device (4) under the control of the redundant processor (2) as, And said common control board (11,12) is redundantly configured between said subscriber line (A1-An) and said processor (2) and a switching device (4). The method of claim 1, The common control board (11, 12) is a subscriber matching device of an electronic switchboard, each of the collecting devices (D1, D2) for collecting information of the subscriber line (A1-An).