JPH0993622A - Large scale link structure for automatic main distributing board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a large scale link structure for an automatic MDF. SOLUTION: Subscriber lines are connected to an exchange by n-sets of basic connectors C1 -Cn connecting independently among subscriber lines and exchanges, and jumper exclusive devices D1 -Dm to attain optional interconnection are used. For example, a subscriber line Li is extracted by the jumpering exclusive device Dm via matrices Mf64 , Ms1 in the device Dn and jumpered to the matrix MS1 in the basic connector C1 by the selection of the matrices Mf64 , MS1 , Mt64 in the device Dn. Then the subscriber line is connected to the exchange as a line Lo via the matrix Mt1 in the basic connector C1 .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-scale link structure used in an automatic MDF device for jumpering a main wiring board (hereinafter referred to as MDF) connecting a telephone exchange and a subscriber line.

[0002]

2. Description of the Related Art Conventionally, a small-scale link structure has existed, but an automatic MD is used because of problems such as economy and installation space.
There was no large-scale link structure used in the F device.

[0003]

Therefore, the conventional telephone office has the following problems. In a large office such as a telephone office, a plurality of exchanges and a large-scale manual wiring board connecting the exchanges to the subscriber line are used to connect an arbitrary subscriber to a desired terminal of the exchange. However, the telephone company that manages the big station tried to solve the problem by interposing human work, but this was an obstacle to the unmanned and remote maintenance of the station.

[0004]

Means for Solving the Problems The first to fourth inventions are as follows.
In order to solve the above problems, in a large-scale link structure of an automatic MDF device, different subscriber line groups and exchanges are independently connected, and a multistage matrix is used to select an arbitrary subscriber in the subscriber line group. It has a plurality of basic link structures for opening a communication path between a line and an exchange, and further has a multi-stage matrix, and extracts the specific subscriber line from the multi-stage matrix in any of the basic link structures to obtain the other basic lines. A special migration link structure is provided to connect to the link structure.

[0005]

According to the first to fourth aspects of the invention, since the large-scale link structure of the automatic MDF device is constructed as described above, a plurality of basic link structures are connected to the desired subscribers. The line is connected to the exchange by selecting the difference points of the multi-stage matrix. On the other hand, in the crossover link structure, a specific subscriber line is extracted from a multistage matrix in any of the above basic link structures and connected to another basic link structure. Therefore, a specific subscriber line is connected to the exchange through a basic link that is cross-connected to form a speech path. Therefore, the above problem can be solved.

[0006]

EXAMPLES First Embodiment FIG. 1 (a), (b) is an explanatory view of the large link structure of a first embodiment of the present invention. This automatic MDF device with a large-scale link structure is based on a small-scale MDF device with a scale of 2000 terminals, which is 12 times that of 24000.
It is a terminal-scale MDF device. The large-scale link structure of the 24000-terminal-scale automatic MDF device shown in FIG. 1 includes 12 basic connection devices A1 to A12, which are basic link structures with a transition interface based on 2000 terminals and connected between the subscriber line group and the exchange. , Its basic connection devices A1 to A12
It is configured with a dedicated migration device B1 having a dedicated migration link structure that exclusively controls the migration. Dedicated migration device B1
Has the same basic configuration as the 2000-terminal-based basic connection devices A1 to A12. The arrangement of the basic connection devices A1 to A12 and the special transit device B1 at the station is as shown in FIG. 1B, for example. The basic configuration of each of the basic connection devices A1 to A12 and the dedicated transfer device B1 is a three-stage matrix link configuration using a small-scale matrix of 48 (or 50) × 64. The first-stage matrix group of each three-stage matrix includes 64 small-scale matrices Mf _{1 to} Mf.
f ₆₄ , each second-stage matrix group is formed of 64 small-scale matrices Ms _{1 to} Ms ₆₄ , and the third-stage matrix group is formed of ₄₈ small-scale matrices Mt _{1 to} Mt ₄₈ . However, a migration interface is provided in the second-stage small scale matrices Ms _{1 to} Ms ₆₄ in each of the basic connection devices A1 to A12.

FIG. 2 is a plan view showing a transfer interface in the small scale matrix Ms in FIG. Each small-scale matrix Ms ₁ in the basic connection devices A1 to A12
Ms ₆₄ is common, in addition to 64 incoming lines Li, 4
Incoming lines Iw for line transfer are added respectively. In addition to the 48 outgoing lines Lo, four outgoing outgoing lines Ow are added. The transfer input line Iw and the transfer output line Ow serve as a transfer interface. The incoming line Li and the incoming line Iw for migration are parallel, and the outgoing line Lo and the outgoing line Ow for migration are parallel. The incoming line Li and the incoming line Iw for the crossover, and the outgoing line Lo and the outgoing line Ow for the crossover are arranged so as to form a selection difference point. 64 small matrices Ms ₁ Ms ₆₄ of the second stage of the basic connection device A1~A12 is because with out over interface of each four lines worth all so Figure 2, each basic connection device A1~ Each A12 has 256 (= 4 x 6)
4) You will have the line in and out. This number of lines can be increased according to the required number of crossover connections. On the other hand, the small matrix Ms ₁ Ms ₆₄ crossover dedicated device B1 is a function of the connecting interface in small matrix Ms ₁ Ms ₆₄ in the base connection device A1~A12 obtained by deletion, respectively. Practically, the small-scale matrix M in the basic connection devices A1 to A12
It is also possible to mount the same thing as s _{1 to} Ms ₆₄ and operate it without using its interface function. Further, it is possible to increase the number of crossover connections by using the structure of the crossover interface included in the small scale matrices Ms _{1 to} Ms ₆₄ in the special transit device B1. The wiring in this case is as shown by the dotted line in FIG.

Next, the operation of the large-scale link structure will be described with reference to FIGS. 1 and 2. For example, if the target subscriber is moved to another subscriber line with the same telephone number without changing the telephone number, in order to form a line between the terminal of a specific exchange and the moving subscriber. , Migration dedicated device B1
Is used. As shown in FIG. 1, when the moving subscriber is connected to the entrance side of the small-scale matrix Mf ₁ in the basic connection device A12 by the subscriber line, the difference point in the small-scale matrix Mf ₁ is selected and the target subscription is made. The main line is connected to the second-stage small scale matrix Ms ₆₄ . Small Matrix Ms ₆₄
Selects the difference point as shown in FIG. 2 and connects the target subscriber line to one of the crossover output lines Ow. As a result, the target subscriber line is extracted and connected to the entrance side of the first-stage small scale matrix Mf ₆₄ of the exclusive transit device B1. In the special transfer device B1, the small scale matrix Mf
_By selecting the difference point on ₆₄ , the target subscriber line is connected to the second-stage small scale matrix Ms ₁ . Then, by selecting a difference point on the small scale matrix Ms ₁ , the target subscriber line is connected to the third scale small scale matrix Mt ₁ . The target subscriber line connected to the small-scale matrix Mt ₁ in the special transfer device B1 is selected, for example, by selecting the difference point on the small-scale matrix Mt ₁ so that the small-scale matrix Ms ₁ of the second stage of the basic connection device A1 is selected. It is connected to the incoming line Iw for migration. That is, the subscriber line is connected from the basic connecting device A12 to the basic connecting device A1. In the basic connection device A1, by selecting a difference point on the small-scale matrix Ms ₁ , the subscriber line is connected to the third-stage small-scale matrix Mt ₁ , and the target subscriber line is selected on the small-scale matrix Mt _1. Then, it is connected to the terminal of the desired exchange.

As described above, in the present embodiment, in addition to the basic connection devices A1 to A12, the small-scale transit device B1 is provided, and a specific subscriber line is extracted from any basic connection device and other basic connection devices are used. The device is passed over to the connection device and connected to the exchange. For this reason, it becomes possible to omit human work which has been involved in the prior art, and the labor saving and remote maintenance can be greatly advanced, and the immediate service stress can be improved. Further, since the crossover connection is performed by the second small scale matrix in the middle stage of the three-stage matrix,
It is possible to secure a sufficient amount of migration without increasing the scale of the special migration device B1. Of course, it is known from experience that most subscriber lines do not require a crossover connection when connecting to an exchange. However, according to the large-scale link structure of this embodiment, a large number of subscriber lines can be used depending on the amount of crossover. A large-scale MDF device can be realized with minimum increase in cost, space, cables, etc.

Second Embodiment FIGS. 3 (a) and 3 (b) are explanatory views of a large-scale link structure showing a second embodiment of the present invention. This automatic MDF device with a large-scale link structure is based on a small-scale MDF device with a scale of 2000 terminals, which is 12 times that of 24000.
It is a terminal-scale MDF device. The large-scale link structure of the MDF device of the 24000-terminal scale shown in FIG. 3 is a basic link structure with twelve 2000-terminal-based crossover interfaces connected between the subscriber line group and the exchange, as in the first embodiment. It is composed of certain basic connection devices A21 to A32 and a special transfer device B2 having a special transfer link structure for exclusively controlling the transfer between the basic connection devices A21 to A32. The special transfer device B2 has the same basic configuration as the 2000-terminal-based basic connection devices A21 to A32. The arrangement of the basic connection devices A21 to A32 and the special transit device B2 at the station is as shown in FIG. 3B, for example.

The basic configuration of each of the basic connection devices A21 to A32 and the special transfer device B2 is 48 (or 50) × 64.
It is a three-stage matrix link configuration using a small-scale matrix. The first-stage matrix group of each three-stage matrix includes 64 small-scale matrices Mf _{1 to} Mf ₆₄ , and the second-stage matrix group includes 64 small-scale matrices Ms _{1 to} Mf.
s ₆₄ , the matrix group of the third stage is formed of ₄₈ small-scale matrices Mt _{1 to} Mt ₄₈ . However, the small scale matrices Ms _{1 to} Ms ₆₄ in the second stage of each of the basic connection devices A21 to A32 are respectively provided with a transfer interface.

FIG. 4 is a plan view showing the transition interface in the small scale matrix Ms in FIG. Each small-scale matrix Ms ₁ in the basic connection devices A21 to A32
.About.Ms ₆₄ are common, have an incoming line Li for 64 lines and an outgoing line Lo for 48 lines, and further add four incoming / outgoing lines Lw for migration. Exit line Lw
Is parallel to the outgoing line Lo of the 48 lines and the incoming / outgoing line Lw
The output line Lo and the output line Lo are arranged orthogonal to the 64 input lines Li to form a difference point. These transfer lines Lw
Is the migration interface. Basic connection device A21-
A small-scale matrix Ms ₁ for crossing between A32s
When extracting a specific subscriber line from Ms ₆₄ , one line is selected from the four lines of the incoming and outgoing lines Lw by selecting the difference point. On the contrary, for the migration from the special migration device B2, the difference point on the incoming / outgoing line Lw and the outgoing line L of the 48 lines
This is a structure in which the subscriber line is connected to the third-stage small scale matrices Mt _{1 to} Mt ₄₈ by selecting two difference points of the difference points for selecting one line of o.

[0013] are 64 small matrices Ms ₁ Ms ₆₄ of the second stage of the basic connection device A21～A32, because with four lines over interface such as all 4, each basic connection device A21 ~ A32 is 256
It will have an interface for (= 4 × 64) lines. This number of lines can be increased according to the required amount of crossover connection by increasing the number of lines of the crossover interface in each Ms. Practical features of these transfer interfaces are that 12 basic connection devices A2
1 to A32, 256 for the special transfer device B2
Among the input / output lines Lw of (= 4 × 64) lines, the number used as a transfer output line and the number used as a transfer input line are different for each device. On the other hand, the special transit device B2 performs a relay function, and the basic connection device A2
The numbers of incoming lines and outgoing lines for 1 to A32 always match. In the example of FIG. 3, 256 × 12 (= 307
Of all the outgoing / incoming lines Lw in 2), the maximum usage situation is 1536 incoming lines and 1536 outgoing lines. Therefore, for practical use, a construction method that satisfies these conditions is important.

Here, a configuration method will be described in which the input / output distribution of the 256 input / output lines Lw of each of the basic connection devices A21 to A32 is set to a maximum of 1: 3 to 3: 1 in consideration of practicality. The exclusive transfer device B2 has a three-stage matrix link configuration as shown in FIG. 3, and all 2304 outgoing lines of the exclusive transfer device B2 are multi-connected to the required number of incoming lines.
As a result, the incoming line (exit line L
w) Of the 3072 lines, 76 are dedicated to incoming lines
There will be 8 lines. Of the 1536 lines required for incoming lines,
The remaining 768 lines are multi-connected. As the required outgoing line 1536 of the special transit device B2, one that is not used as an incoming line is selected and applied from the outgoing / incoming lines Lw that are multi-connected. This selection can be easily realized by the control software. With this configuration method, the special device B2 for migration is from 1: 3 from each of the basic connection devices A21 to A32.
It will be possible to efficiently provide migration paths for a 3: 1 migration in / out allocation. In the large-scale MDF device having the large-scale link structure of FIG. 3, as in the first embodiment, by selecting the difference point of the small-scale matrix in each of the basic connection devices A21 to 32 and the transfer-only device B2, a specific point is specified. A cross connection is made to the subscriber line and the subscriber is connected to the terminal of the desired exchange. As described above, in this embodiment, the basic connection device A2
The small matrix Ms ₁ Ms ₆₄ in 1～A32, provided and out line Lw for over a crossover interface, so that shared use incoming and exiting for bridging a dedicated device B2. Therefore, in addition to the effects of the first embodiment, it is possible to further reduce the number of cables for migration. The present invention is not limited to the above embodiment, and various modifications can be made. For example, there are the following modifications.

(1) In the first and second embodiments, 20
2400 based on an MDF device with a scale of 00 terminals
Although a large-scale link structure with 0 terminals is explained, it is not necessary to base it on 2000 terminals.
A large-scale link structure may be configured based on the scale of 00 terminals and 4000 terminals. In addition, 24 large-scale link structure
It is not limited to the 000 terminal scale. Up to now, a single dedicated device has been used to facilitate the explanation, but the essence is as follows. FIG. 5 is an explanatory diagram of a large-scale link structure showing the present invention. A method for realizing a general large-scale link structure will be described after understanding the above-mentioned easy embodiment. The basic connection devices C1 to Cn, which are a plurality of basic link structures having a multi-stage matrix, and the plurality of dedicated transfer devices D1 to Dm, which are a transfer link structure each having a multi-stage matrix, are provided. The small-scale matrix of the second stage in each of the basic connection devices C1 to Cn is provided with a transfer input interface and a transfer output interface corresponding to the transfer amount, and these interfaces are the input side of the transfer dedicated devices D1 to Dm. They are distributed and connected to the output side. That is, the plurality of dedicated transit devices D1 to Dm form one transit mechanism, and perform a transit connection between the basic connection devices C1 to Cn with respect to a specific subscriber line, and the subscriber line is a desired exchange. Connected to the terminal. N basic connection devices C1 to C independently connected between the subscriber line and the exchange
The subscriber line is connected to the exchange by means of n, but transit-only devices D1 to Dm are used to enable any interconnection. For example, the subscriber line Li is the basic connection device C
n matrixes Mf ₆₄ and Ms ₁ are extracted to the dedicated device Dm, and each matrix Mf ₆₄ in the device Dn,
By selecting Ms ₁ and Mt ₆₄ , connection is made to the matrix Ms ₁ in the basic connection device C1. The subscriber line is then connected to L via the matrix Mt ₁ in the basic connection device C1.
O is connected to the exchange. (2) Each stage matrix is composed of a 48 × 64 or 50 × 64 small scale matrix, but the scale is not limited to this. (3) In the first embodiment, the migration input line Iw, the migration output line Ow, and the migration input / output line Lw are set to four lines per one small-scale matrix. You may change arbitrarily according to it.

[0016]

As described in detail above, according to the first to fourth inventions, a plurality of basic link structures independently connected between different subscriber line groups and exchanges and a multistage matrix are provided. However, since a specific subscriber line is extracted from a multi-stage matrix in an arbitrary basic link structure and connected to another basic link structure to form a special link structure, a large-scale link structure of an automatic MDF device is configured. In the conventional technology, it is possible to omit human work which has been involved, which greatly improves labor-saving and remote maintenance, and also improves service immediate stress. Further, it becomes possible to realize a large-scale MDF device according to the amount of transfer while minimizing the increase in cost, space, cables, etc.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a large-scale link structure showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a transition interface in the small scale matrix Ms in FIG.

FIG. 3 is an explanatory diagram of a large-scale link structure showing a second embodiment of the present invention.

FIG. 4 is a plan view showing a transfer interface in the small scale matrix Ms in FIG.

FIG. 5 is an explanatory diagram of a large-scale link structure of the present invention.

[Explanation of symbols]

A1~A12, A21~A32, C1~Cn basic link structure (basic connection device) B1, B2, D1~Dm over dedicated link structure (cross-only _{device) Mf 1 ~Mf 64, Ms 1} ~Ms 64, Mt 1 ~ Mt ₄₈ Small-scale matrix forming a three-stage matrix Iw, Ow, Lw crossing interface

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hirohisa Akita 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (4)

[Claims] 1. A plurality of basic units that are independently connected between different subscriber line groups and exchanges and that use a multistage matrix to establish a communication path between any subscriber line in the subscriber line group and the exchange. A link structure, and a crossover dedicated link structure that has a multistage matrix and extracts the specific subscriber line from the multistage matrix in any of the basic link structures and connects it to another basic link structure. A large-scale link structure of the automatic main wiring board device. 2. The intermediate stage matrix in the multistage matrix in each of the basic link structures is provided with an interface for the crossover dedicated link structure, and the crossover connection is performed by the intermediate stage matrix. The large-scale link structure of the automatic main wiring board device according to claim 1. 3. The automatic main unit according to claim 1, wherein the interface provided in each of the intermediate stages of the matrix is configured such that the outgoing and incoming wirings for the special migration link structure are commonly used. Large-scale link structure for wiring board equipment. 4. A structure in which a plurality of the link-only link structures are provided, and a subscriber line extracted from the basic link structure can be connected to any entrance side of the plurality of link-only link structures by selection, 4. The automatic main wiring board device according to claim 1, 2 or 3, wherein the subscriber line is configured to be connected to the other basic link structure through the selected transfer-only link structure. Scale link structure.