JPS598998B2 - Automatic wiring board switch configuration - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to switching systems, and more particularly to the construction of distribution frames for accommodating subscriber lines.

Currently, the general automatic switching system has made great progress in terms of technology, but it seems that the wiring between subscribers and devices, and the distribution boards and connection boards that connect them, have been neglected. As the industry continues to grow, it is becoming huge in scale, and has attracted a great deal of attention in recent years.

The above-mentioned problems were also recognized in the main distribution board that accommodates subscriber lines and connects them to in-office equipment, and the wiring work was automated using switches to improve efficiency, instead of manual wiring work. It has become possible to consider wiring boards. Assuming that a wiring board automated by a switch is configured to have the same characteristics as a conventional wiring board, it is inevitable that if the outside cable side, that is, the subscriber cable side, is n lines, then there will be an in-station circuit that corresponds to the outgoing side. The device side must also have a one-stage complete group link configuration that can accommodate cables for n lines. This stems from the traditional concept of the main distribution board, which implicitly allows for wiring between any subscriber and local equipment.

The exchange system has a multi-stage link configuration that connects to specific subscribers, and guarantees connections within the link block rate commensurate with the system.The role of the link is to concentrate the lines, so the link configuration It is a well-known fact that the number of switches needed to perform this is significantly smaller than that required for a one-stage complete link. However, if a one-stage complete link is installed as the main distribution board located in front of the exchange system, the number of switches equal to or greater than the main links of the exchange system will be required, resulting in disadvantages in terms of space and economy. become.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks and to provide a switch arrangement for an automated distribution frame which is advantageous in terms of space and economy.

According to the present invention, in a distribution frame automated by a switch, one complete group of first-stage links is configured for each number of subscribers accommodated in one theoretical switch, and the complete group of first-stage links is configured in one process. By arranging a plurality of switches exclusively from other processes, a switch configuration of an automated distribution board is obtained, which is characterized in that the subscribers as a whole form an incomplete group of one-stage links.

Next, a detailed description will be given with reference to the drawings.

FIG. 1 shows the configuration of a distribution board with one-stage complete group links using conventional switches.

Here, if NXn is one switch unit, the number of subscribers is m
Therefore, it becomes necessary to configure the MXm link. Furthermore, when the number of switches is 2, the relationship m=nl holds true. Therefore, when n and m are set, the number of required switches is JXl, which means that if the increase in the number of subscribers is k, then m+k=n(l+Δ11), and the number of required switches in this case is (j+Δi)2, and the number of switches required due to the increase in subscriber lines becomes 12+2X1×Δ2+Δ12, and the station that accommodates a larger capacity has a larger weight, which results in a larger burden in terms of space and economy.

FIG. 2 is a diagram showing an embodiment of the present invention.

In the present invention, N in the description of the prior art corresponds to one theoretical switch (hereinafter referred to as HG) of a local exchange, and HG
One block constitutes one complete link.
Note that 40 is generally used for N. In FIG. 2, a plurality of blocks are arranged to correspond to the HG, exclusive of other blocks. By arranging them as shown in Figure 2, when m = N2, the number of required switches becomes 1, which is 1/e compared to the conventional 12, and it is clear that the space required is also 1/l. .

This also means that the cost required for equipment can be reduced to about 1/11, and economical disadvantages can also be eliminated at the same time. In the case of the configuration according to the present invention, the number of switches required as the number of subscribers increases k is Δ2 if m+K=n(l+Δl) holds, and if the number increases within the range of k<n, the number of switches required is increased by one switch. That will be enough.

The advantages of the present invention are as described above, but the theoretical switch 1
An automated distribution board that can be put to practical use without sacrificing the characteristics of the distribution board by setting the optimal values according to the exchange system to be applied, even when the structure is configured with complete links of stages exclusively. Switch configurations are possible.

[Brief explanation of drawings]

FIG. 1 is a principle diagram showing the configuration of a distribution board based on a conventional switch configuration, and FIG. 2 is a principle diagram showing the configuration of a distribution board to which the present invention is applied. m...Number of subscribers, l...Number of switches,
n...Number of lines per complete group, 0 to j-1.
・・・・・・Switch unit.

Claims (1)

[Claims] 1. In a distribution board automated by switches, a one-stage complete link switch is configured with the number of incoming lines equal to the theoretical number of subscribers that can be accommodated in one switch when configuring the exchange main channel switch, and the switch is A block corresponding to the value obtained by dividing the number of lines entering the exchange switch by the number of lines entering the switch is placed in front of the exchange switch, and for the subscribers accommodated in each block, the first stage is a complete link, and the other blocks 1. A switch configuration for an automatic distribution board, characterized in that the switches are arranged exclusively with the subscribers accommodated in the switch so that the subscribers as a whole have incomplete links with respect to the exchange switch.