JPH06339166A - Incomplete group automatic mdf device - Google Patents

Abstract

PURPOSE:To reduce cost and to make a device small by adopting an incomplete group network for the configuration of a network of a connection path changeover means. CONSTITUTION:An incomplete group automatic main distribution frame(MDF) device 3 adopts an incomplete group network for a connection path changeover means 3a. When a subscriber line 1 connected newly is designated from an exchange supervisor, the incomplete group automatic main distribution frame (MDF) device 3 uses a selection means 3b to select an idle exchange side line 2. Moreover, the selection means 3b references the operating state of the connection path changeover means 3a to select a connection path through which the idle exchange side line 2 and the subscriber line 1 are connected. Then the connection path changeover means 3a sets the connection path between the exchange side line 2 selected by the selection means 3b and the subscriber line 1. An incomplete group network configuration is adopted for the connection path of the connection path changeover means 3a of the incomplete group automatic main distribution frame (MDF) device 3 in this way to make the connection path changeover means 3a small in size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incomplete group automatic MDF device which is provided between a subscriber and an exchange and automatically connects individual subscriber side lines to subscriber terminals of the exchange.

[0002]

2. Description of the Related Art Conventionally, a connection between a subscriber line cable laid from a terminal installed in a subscriber's house and a line on an exchange side is MDF (MAIN DISTRIBUTING FRAME; main wiring board, hereinafter abbreviated as MDF). At that time, when a terminal was newly installed, it was connected with a jumper, and when the terminal was removed, work to remove the jumper (jumper ring work) was performed. However, since this work is entirely manual work, there is a problem of soaring labor costs and the like, and recently, an automatic MDF device that automates the jumper work has been developed.

FIG. 7 shows the configuration of a conventional automatic MDF device. In the figure, the automatic MDF device 100 is connected to an automatic MDF operating terminal 200 for an administrator of the exchange to operate the automatic MDF device 100, and the subscriber terminal is connected to the exchange side via a subscriber side line 400. The exchange 300 is connected via the line 500.

The automatic MDF device 100 comprises a connection path switching means 110 and a control means 120.
It is a device that connects the subscriber side line 400 and the exchange side line 500 instructed from the F operation terminal 200 by the connection path switching means 110 under the control of the control means 120.

In this system, the automatic MDF device 10
By adopting a complete group network for the connection path switching means 110 that configures 0, the automatic MDF operation terminal 200
Therefore, it is possible to reliably connect the subscriber side line and the exchange side line instructed by the exchange manager.

FIG. 8 shows a concrete example of a complete group network adopted in the connection path switching means 110 of the automatic MDF device 100. FIG. 9 is a flowchart showing the mutual operation of the automatic MDF device 100 and the automatic MDF operation terminal 200.

When a new application such as a telephone call is received from the subscriber (step 901), the manager of the exchange is connected to the subscriber's home from the subscriber's address and the subscriber side line 40 is installed.
0 is determined (step 902), and the exchange side line 5 is determined from the usage state of the exchange side line group and the service class type.
00 is determined (step 903), and the automatic MDF operating terminal 200 is operated to instruct the automatic MDF device 100 to connect the subscriber side line 400 and the exchange side line 500 (step 904).

Thereafter, the administrator of the exchange stands by for the result report from the automatic MDF device 100. Automatic MDF device 10
At 0, the control means 120 determines a path on the connection path switching means 110 capable of connecting the subscriber side line 400 and the exchange side line 500 (step 906), and controls the connection path switching means 110 to control the path. The paths are connected (step 907). Then, the connection completion is notified to the automatic MDF operation terminal 200 (step 908). With this notification, the administrator confirms that the path connection is completed (step 909).

At this time, since the connection path switching means 110 of the automatic MDF device 100 is a complete group network, as long as there is no obstacle in the network difference, the designated subscriber side line 400 and exchange side line 500 are connected. The path connecting the two is guaranteed, and there is an advantage that the exchange manager can easily manage the exchange side line.

[0010]

The above-mentioned perfect group network is a known technique and is a network in which any two vacant terminals can be surely connected regardless of the usage state of the network. The design method is known as the Cross theorem.

Automatic MDF adopting complete group network
Although the device is sufficient in terms of the function of connecting the subscriber side line laid in the subscriber's house to be connected to the exchange and the exchange side line, the number of switches constituting the complete group network inevitably increases, The price increase and the size increase of the automatic MDF device cannot be avoided.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a technique effective in reducing the size and cost of an automatic MDF device.

[0013]

In order to solve the above-mentioned problems, the present invention is as follows. This will be described based on the principle diagram of FIG.

The incomplete group automatic MDF device 3 of the present invention employs an incomplete group network as the connection path switching means. The incomplete group network may not always be able to connect between two terminals in an unused state depending on the usage status (congestion) of the network. Where incomplete group automatic MDF
The administrator of the device 3 or the exchange must deal with the case where the subscriber side line 1 and the exchange side line 2 cannot be connected. In the present invention, the means for solving this is as follows.

The incomplete group automatic MDF device 3 may be provided with a selection means 3b for selecting an exchange side line 2 which is in an unused state and can be connected by the connection path switching means 3a.

Further, in addition to the function of selecting the exchange side line 2 connectable to the designated subscriber side line 1, the selection means 3b notifies the exchange manager of the information of the exchange side line 2. It may have a function. Here, when there are a plurality of exchange side lines 2 that can be connected to the subscriber side line 1, the selecting means 3b may notify the exchange manager of the information of all the exchange side lines 2. .

[0017]

According to the present invention, the connection path switching means 3a can be miniaturized by forming the connection path of the connection path switching means 3a of the incomplete group automatic MDF device 3 into the incomplete group network configuration. Here, the mutual operation of the incomplete group automatic MDF device 3 and the exchange administrator due to the adoption of the incomplete group network will be described.

The incomplete group automatic MDF device 3 selects the unused exchange side line 2 by the selecting means 3b when the exchange side administrator newly designates the subscriber side line 1 to be connected. .

Further, the selection means 3b refers to the usage status of the connection path switching means 3a and selects a connection path through which the exchange side line 2 in the unused state and the subscriber side line 1 can be connected.

The connection path switching means 3a sets a connection path between the exchange side line 2 selected by the selection means 3b and the subscriber side line 1. Further, the incomplete group automatic MDF device 3 receives the designation of the subscriber side line 1 and the designation of the exchange side line 2 to be connected to the subscriber side line 1 from the exchange manager, and the selecting means 3b. Is
The connection route switching unit 3a is operated so as to select a connection route capable of connecting the subscriber side line 1 and the exchange side line 2 with reference to the use state of the connection route switching unit 3a. Let The connection path switching means 3a can set the connection path and connect the subscriber side line 1 and the exchange side line 2.

On the other hand, when there is no connection path capable of connecting the subscriber side line 1 and the exchange side line 2 designated by the exchange manager, the selecting means 3b is in an unused state and the subscriber It is possible to select another exchange side line 2 that can be connected to the side line 1 and notify the exchange manager of information regarding this exchange side line 2. Here, the selecting means 3b may select a plurality of exchange side lines 2 which are in an unused state and connectable to the subscriber side line 1. In this case, the exchange manager is incomplete. Group automatic M
One exchange side line 2 is arbitrarily selected from the plurality of exchange side lines 2 notified from the DF device 3, and the information about the exchange side line 2 is notified to the incomplete group automatic MDF device 3 again.

In the incomplete group automatic MDF device 3 which has received the notification, the connection route switching means 3b can set a connection route between the subscriber side line 1 and the exchange side line 2.

On the other hand, when the selecting means 3b selects one exchange side line 2 which is in the unused state and can be connected to the subscriber side line 1, the exchange side manager 2 obtains information about the exchange side line 2. At the same time, the connection path switching means 3a may be operated to set a connection path between the subscriber side line 1 and the exchange side line 2.

[0024]

EXAMPLES Specific examples of the present invention will be described below. (Embodiment 1) FIG. 2 shows an overall schematic configuration of an incomplete group automatic MDF device 4 in the present embodiment 1. The incomplete group automatic MDF device 4 according to the first embodiment includes the control unit 4
a, a connection path switching circuit 4b, and an MDF operation terminal 5 for maintaining and managing the imperfect group automatic MDF device 4 is externally connected. This MDF operating terminal 5 is the exchange 7
Shall be operated by the administrator.

Further, a plurality of subscriber terminals 6 are connected to the connection path switching circuit 4b via a subscriber side line 8 and an exchange is connected via an exchange side line 9. Here, the connection path switching circuit 4b has a function of setting / releasing a connection path between the subscriber side line 8 and the exchange side line 9 designated by the MDF operating terminal 5, and these paths are incomplete. It consists of a group network.

On the other hand, the control unit 4a is a MD
It has a function of controlling the operation of the connection path switching circuit 4b in accordance with an instruction from the F operation terminal 5. FIG. 3 is a network configuration diagram showing the internal configuration of the connection path switching circuit 4b.

In the figure, 80 switch elements (A), 4
It is an incomplete group network having a three-stage switch configuration including five switch elements (B) and 47 switch elements (C).

The switch element (A) has 45 input terminals and 45 output terminals each, the switch element (B) has 80 input terminals and 47 output terminals, and the switch element (C).
Has 45 input terminals and 45 output terminals. Figure 8
It is possible to construct a network with about half the number of switch elements as compared with the complete group network shown in FIG.

Next, FIG. 4 shows an internal block diagram of the control unit 4a. The control unit 4a according to the first embodiment includes a control circuit 40, a switch side line determination circuit 41, a path determination circuit 42, and a memory 43.

Further, the memory 43 is provided with an exchange side line usage status registration table 43a and a path usage status registration table 43b. The above-mentioned exchange side line use status registration table 43a indicates whether the use state of each exchange side line 9 connected to the connection path switching circuit 4b, that is, whether it is in an unused state,
Alternatively, it is a table for registering whether it is in use.

The path use status registration table 43b registers the use status of the connection path connecting the arbitrary subscriber side line 8 and the exchange side line 9, that is, whether or not it is in use.
The exchange-side line determination circuit 41 refers to the exchange-side line use status registration table 43a to select and determine the unused exchange-side line 9 among the exchange-side lines of the service class designated by the MDF operating terminal 5. It is a circuit to do.

The path determination circuit 42 refers to the path use status registration table 43b and selects the exchange side line 9 determined by the exchange side line determination circuit 41 and the subscriber side line 8 designated by the MDF operating terminal 5. It is a circuit for selecting and deciding an unused connection path among the connection paths that can be connected to.

The control circuit 40 has a function of controlling the operations of the exchange side line determining circuit 41 and the path determining circuit 42. Next, FIG. 5 is a flowchart showing the mutual operation of the incomplete group automatic MDF device 4 and the exchange manager in the first embodiment.

When the exchange manager accepts the subscriber's new connection request (step 501), the exchange manager determines the subscriber side line 8 to be assigned from the subscriber's address (step 502). Then, the information about the subscriber side line 8 is notified from the MDF operating terminal 5 to the incomplete group automatic MDF device 4 to request jumpering (step 503).
At this time, the exchange side administrator also notifies the incomplete group automatic MDF device 4 of the service class information desired by the subscriber.

After that, the exchange manager determines that the incomplete group automatic MD
It waits for a response from the F device 4. On the other hand, in the incomplete group automatic MDF device 4 that has received the jumper request, the exchange side line determination circuit 41 of the control unit 4a refers to the exchange side line use status registration table 43a based on the service class, Select the unused exchange side line 9 from the exchange side lines of the class.
It is determined (step 505).

Next, the path decision circuit 42 refers to the path use status registration table 43b and refers to the exchange side line decision circuit 4
It is determined whether or not there is an unused connection path that can connect the exchange side line 9 determined as No. 1 and the subscriber side line 8 (steps 506 and 507).

Here, when the exchange side line 9 and the subscriber side line 8 can be connected and there is an unused connection path, this connection path and the exchange side line 9 are connected to the subscriber. It is decided to connect to the side line 8 (step 508). Then, the control circuit 40 operates the connection path switching circuit 4b to connect the exchange side line 9 and the subscriber side line 8 (step 509).

Here, the control circuit 40 indicates completion of connection between the subscriber side line 8 and the exchange side line 9 by the MDF operating terminal 5.
The exchange manager is notified via (step 510).
The exchange manager recognizes from the notification that the connection between the subscriber side line 8 and the exchange side line 9 has been completed (step 504).

On the other hand, when it is possible to connect the exchange side line 9 determined by the exchange side line determination circuit 41 and the subscriber side line 8 in the above step 507, and there is no unused connection path. Causes the control circuit 40 to operate the exchange side line determination circuit 41 again to select another exchange side line 9 in the unused state from the exchange side lines of the service class (step 511), and the above step 506. The following processing is repeated.

As described above, according to the first embodiment, the connection path switching circuit 4b can be made economical and compact by adopting the imperfect group network. Further, the exchange administrator may perform the same maintenance as in the case of the conventional perfect group network.

(Embodiment 2) The imperfect group automatic MDF device 4 in the present embodiment 2 is not used when the subscriber side line 8 and the exchange side line 9 cannot be connected to the above-mentioned embodiment 1. It has a function of selecting an exchange-side line that can be connected to the subscriber-side line 8 and notifies the MDF operating terminal 5 of this. In detail, the control circuit 4 of the control unit 4a
0 indicates that there is no connection path capable of connecting the exchange side line 9 instructed by the exchange manager and the subscriber side line 8 (see steps 506 and 507 in FIG. 5). To select an exchange side line 9 that is in the same service class as this exchange side line 9 and is in an unused state. Next, the path determination circuit 42 is operated to determine whether or not there is a connection path connectable to the subscriber side line 8 for the exchange side line 9. Then, the control circuit 40 uses the exchange side line determination circuit 4
On the basis of the selection result of 1 and the path determination circuit 42, n (a natural number of 1 or more) line is selected for an exchange line which is in an unused state and can be connected to the subscriber side line 8 (or in the same service class If there are all the exchange side lines <n that are present and can be connected, all the exchange side lines 9) and the information regarding the exchange side lines 9 of these n lines are notified to the MDF operating terminal 5. Incomplete group automatic MD
The configuration of the F device 4 is similar to that of the first embodiment described above.

The mutual operation between the incomplete group automatic MDF device 4 and the exchange side administrator in the second embodiment will be described below with reference to the flowchart of FIG. When the switch manager receives a new connection request from the subscriber (step 601), the switch manager determines the subscriber line 8 to be assigned from the subscriber's address, and the switch line of the service class desired by the subscriber. Of these, the exchange side line 9 in the unused state is arbitrarily determined (step 602). Then, the exchange manager requests the incomplete group automatic MDF device 4 to jumper by inputting the information on the subscriber side line 8 and the information on the exchange side line 9 to the MDF operating terminal 5 (step 603). . After that, the exchange administrator
Wait for a response from the incomplete group automatic MDF device 4.

On the other hand, in the incomplete group automatic MDF device 4 which has received a jumper ring request from the exchange manager, the control circuit 40 of the control unit 4a has the path determination circuit 42.
To operate. The path determination circuit 42 refers to the path use status registration table 43b and selects a connection path that is connectable to the subscriber side line 8 and the exchange side line 9 and is in an unused state (steps 606 and 607). ).

If there is a connection path, the control circuit 40 operates the connection path switching circuit 4b to set the connection path (steps 608 and 609). Then, the control circuit 40 notifies the MDF operation terminal 5 of the completion of connection of the subscriber side line 8.

The exchange manager recognizes the completion of the new connection of the subscriber side line 8 (steps 604, 605). On the other hand, in step 607 described above, when there is no connection path capable of connecting the exchange side line 9 and the subscriber side line 8, the control circuit 40 causes the exchange side line determination circuit 4
1 is notified of the service class of the exchange side line 9.

The exchange-side line determination circuit 41 refers to the exchange-side line use status registration table 43a based on the service class, and selects one unused exchange-side line 9 from the exchange-side lines of the service class. Election (step 611).

Next, the control circuit 40 has the path determination circuit 42.
To operate. The path determination circuit 42 refers to the path usage status registration table 43b and refers to the exchange side circuit determination circuit 4
It is determined whether or not there is a connection path capable of connecting the exchange side line 9 selected in No. 1 and the subscriber side line 8 (steps 612 and 613).

Here, if there is a connection path capable of connecting the exchange side line 9 and the subscriber side line 8, the control circuit 40 recognizes the exchange side line 9 as a connectable exchange side line. I'll do it.

On the other hand, in step 613, if there is no connection path capable of connecting the exchange side line 9 determined by the exchange side line determination circuit 41 and the subscriber side line 8, the steps from step 611 onward are performed. Repeat the process.

Then, the control circuit 40 determines whether or not n lines of connectable exchange side lines 9 have been selected, or all of the service classes of the exchange side lines 9 accommodated by the imperfect group automatic MDF device 4. It is determined whether or not the selection has been made for the exchange side line 9 (in this case, the number of unused exchange side lines is less than n) (step 614).

When n lines have been selected as the exchange side lines 9 or when selection has been completed for all the exchange side lines 9 of the service class, the control circuit 40 sends information about these connectable exchange side lines 9 to the exchange. Notify the administrator (step 615). At this time, the incomplete group automatic MDF device 4 may also notify the exchange manager of the exchange side line determined to be unconnectable in the above process.

If the number of the exchange-side lines 9 selected up to this point is less than n and there are other unused exchange-side lines 9, the n exchange-side lines 9 are replaced. Until the selection is made, or until there is no other exchange side line 9, the above-mentioned processing from step 611 is repeated.

The exchange side manager recognizes the exchange side line 9 of the n lines connectable from the incomplete group automatic MDF device 4,
A single exchange-side line 9 is arbitrarily determined from these n-side exchange-side lines 9 (steps 604 and 616), and jumpering between this exchange-side line 9 and the subscriber-side line 8 is incomplete. Request the automatic MDF device 4. Thereafter, the exchange manager waits for a response from the incomplete group automatic MDF device 4, and when receiving the connection completion, terminates the process for the subscriber (step 605).

As described above, according to the second embodiment, even if the path cannot be set due to the incomplete group network, the path can be set by one retry at the maximum. still,
In step 615, the control circuit 40 notifies the exchange manager of all the exchange-side lines that can be connected. However, after arbitrarily selecting a single exchange-side line from these exchange-side lines, You may make it notify only the selected exchange side line.

[0055]

According to the present invention, since the network of the connection path switching means has an incomplete group network structure, the cost can be reduced and the device can be downsized.

On the other hand, when the subscriber side line and the exchange side line are connected, an incomplete group network configuration is created by automatically setting the optimum connection route in consideration of the usage status of the network. It is possible to prevent the occurrence of link blocks and reduce the burden on the exchange administrator.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is an overall configuration diagram of a switching center in the first embodiment.

FIG. 3 is a specific example of a connection path switching circuit.

FIG. 4 is an internal configuration block diagram of a control unit according to the first embodiment.

FIG. 5 is a flowchart showing the mutual operation of the incomplete group automatic MDF device and the exchange manager in the first embodiment.

FIG. 6 is a flowchart showing the mutual operation between the incomplete group automatic MDF device and the exchange manager in the second embodiment.

FIG. 7 is an overall configuration diagram of a conventional automatic MDF device.

FIG. 8 is a specific example of a connection path switching unit having a complete group network configuration.

FIG. 9 is a flowchart showing the mutual operation of a conventional automatic MDF device and a switch administrator.

[Explanation of symbols]

 1 ... Subscriber side line 2. Exchange side line 3 ... Incomplete group automatic MDF device 3a ... Connection path switching means 3b ... Selection means 4 ... Incomplete group automatic MDF device 4a ... Control unit 4b ...・ Connection path switching circuit 5 ・ ・ MDF operation terminal 6 ・ ・ Subscriber terminal 7 ・ ・ Switch 8 ・ ・ Subscriber side line 9 ・ ・ Switch side line 40 ・ ・ Control circuit 41 ・ ・ Switch side line decision circuit 42 ・ ・Path determination circuit 43 ... Memory 43a ... Switch side line usage status registration table 43b ... Path usage status registration table

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shunichi Tominaga 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Within Fujitsu Limited (72) Inventor Kiyoko Aoki 1-1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone (72) Inventor Hirohisa Akita 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Zenji Kaiya 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. In the company

Claims (3)

[Claims] 1. An MDF device (3) for setting / releasing a connection path between a subscriber side line (1) and an exchange side line (2), wherein a connection route switching means (3a) having an incomplete group network configuration is provided. )
An incomplete group automatic MDF device comprising: 2. An unused connection path switching means (3)
Incomplete group automatic, comprising selection means (3b) for selecting a switch side line (2) connectable by a) and connection path switching means (3a) configured by an incomplete group network MD
F device. 3. A single or a plurality of exchange side lines that can be connected to the subscriber side line (1) when the specified subscriber side line (1) and the exchange side line (2) cannot be connected. A selection means (3b) for selecting (2) and notifying the exchange manager of the line information on the exchange side, and a connection path switching means (3a) constituted by an incomplete group network are provided. Incomplete group automatic MD
F device.