JPH06339162A - Incoming terminal reservation connection method in automatic mdf device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an incoming terminal reservation connection method for an automatic MDF device which enables efficient path connection at the time of building a station with a low block rate. [Configuration] Each of a plurality of primary switch groups PS00-P
S09, PS30 to PS39 and secondary switch group SS
Networks 2-0 of a plurality of imperfect groups composed of two-stage links having 00-SS04, SS15-SS19
2-3, when connecting the input terminal of the automatic MDF device 1 having the crossover link 3 between networks, the storage device 4 and the control device 5 at the time of building a station, the input terminal and service type used in advance in the storage device 4 and Based on the stored contents, the control device 5 automatically selects and connects the input terminals in the order in which the block rate becomes the lowest.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network of a plurality of imperfect groups, each of which is composed of a two-stage link having a plurality of primary switch groups and a plurality of secondary switch groups, a cross link between the networks, a storage device and a control. The present invention relates to an incoming terminal reservation connection method at the time of building a station in an automatic MDF device having a device.

[0002]

2. Description of the Related Art Recently, in order to eliminate a connection restriction in each of a plurality of incomplete group networks composed of a two-stage link having a plurality of primary switch groups and a plurality of secondary switch groups, respectively, there has been a cross-link between networks. An automatic MDF device with a crossover link has been developed in which a link can be provided to connect an input terminal of an arbitrary network to the output terminal of a secondary switch group of another network through the primary switch group and the crossover link of the network. Has been done.

In an automatic MDF device having such a crossover link, even if the output terminal in any network is in use, the output terminal in another network can be used via the crossover link, so that in each network. There is an advantage that the connection restriction can be effectively eliminated and the connection efficiency of the line can be significantly improved. On the other hand, however, there is a problem in that, when a path is connected, a block in which the output terminal of the network is connected to another network via a cross link and cannot be used easily occurs. As a method that can avoid this, conventionally, an automatic selection connection method has been proposed in which an optimum output terminal is automatically selected by designating an input terminal and a service type.

[0004]

However, the conventionally proposed automatic selection connection method is to automatically select the optimum output terminal for one input terminal. It is not applicable when a large number of path connections are made. Therefore, at the time of building a station, conventionally, a maintenance person has taken into consideration the accommodation status of the input terminals and designated the terminals in an order that does not become a block to perform the path connection. For this reason, there is a problem that the maintenance person requires a great deal of skill and that the work efficiency is poor.

The present invention has been made in view of such conventional problems, and is an automatic MDF capable of efficiently performing path connection at the time of building a station at a low block rate.
An object of the present invention is to provide a method for connecting and reserving an input terminal in a device.

[0006]

In order to achieve the above object, according to the present invention, a network of a plurality of imperfect groups and a network mutual network each constituted by a two-stage link having a plurality of primary switch groups and a plurality of secondary switch groups, respectively. When connecting the input terminal of the automatic MDF device having the crossover link, the storage device and the control device at the time of building the station, the storage device stores the input terminal and the service type to be used in advance, and based on the stored contents. The control device automatically selects and connects the input terminals in the order of the lowest block rate.

[0007]

According to the present invention, by storing the input terminal and service type to be used in advance in the storage device, the control device automatically selects the optimum input terminal so that the block rate becomes the lowest based on the stored contents. Selected connections are made.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an example of an automatic MDF device embodying the present invention. This automatic MDF device 1
Is a network 2-0 of a plurality of incomplete groups of two-stage links.
2 to 3, a crossover link 3 that connects these networks, a storage device 4 that stores connection information, and a network 2-0 to 2 based on the stored contents of the storage device 4.
3 and a cross link 3, a control device 5 for controlling the connection, and a communication control device 6 for remotely controlling the control device 5 via the storage device 4 from the outside.
Various connection information is input to the external operation terminal (for example, a personal computer) 7 via the public communication network 8 and the communication control device 6.

In this embodiment, the network 2-0
Each of 2-3 has a group of 10 primary switches each having an input terminal of 5 lines and a group of 5 secondary switches each having an output terminal of 6 lines.
The primary switch group of −0 is represented by the symbols PS00 to PS09, the secondary switch group is represented by the symbols SS00 to SS04, and the primary switch group of the network 2-3 is represented by the symbols PS30 to PS3.
9, the secondary switch group is denoted by reference signs SS15 to SS19. The crossover link 3 is composed of all-complex type 150 lines, and the crosses in the drawing indicate relay contacts for connection.

The operation of this embodiment will be described below with reference to the flow chart shown in FIG. First, prior to the path connection at the time of building a station, an input terminal and a service used in each network 2-0 to 2-3 from the external operation terminal 7 to the storage device 4 via the public communication network 8 and the communication control device 6. The type is input and stored, and the input terminal of each network is reserved. When the reservation is completed, next, the path connection is started by a command from the operation terminal 7.

In the path connection, the control device 5 automatically selects and connects the input terminals in the order in which the block rate becomes the lowest based on the contents of the storage device 4. First, of the service types, the service type with the smallest number of reserved terminals is selected. For example, when the reservation status of the service type for the input terminal is the schematic diagram shown in FIG. 3, the service type indicated by Δ is selected. In FIG. 3, the mark Δ indicates the service type of the public line, and the mark ○ indicates the service type of the general line. Next, with respect to all the primary switch groups having reserved terminals of the selected service type, PS00, PS20, and PS30 in the case of FIG. 3, the reserved number of the input terminals and the number of used lines which are in use are The primary switch group having the largest sum is selected, and the input terminal of the service type indicated by Δ of the selected primary switch group is selected and connected. After that, the reservation of the connected input terminal is canceled (in use). The above operation is repeated until the connection to all the reserved input terminals is completed.

Therefore, in the case of FIG. 3, first, among the input terminals that have reserved the service type of the public line, the automatic selection connection is performed from the input terminal of the primary switch group with the largest number of reservations, and then the same algorithm is used. Among the input terminals for which the service type of the general line is reserved, the automatic selection connection is performed from the input terminal of the primary switch group having the largest number of reservations.
Here, when the five input terminals in each primary switch group are indicated by symbols a to e, the order of automatic selection connection is as follows: PS20b, PS30c, PS30b, PS00b, PS.
20 e, PS20 d, PS20 c, PS30 d, PS00 c, and PS10 d. The input terminals of the same service type in the same primary switch group are connected in order, but the order of connection can be set arbitrarily.

In this way, if the input terminal and the service type used in advance are stored in the storage device 4 and the path connection is controlled by the control device 5 on the basis of the stored contents, the input is made in the order of the lowest block rate. Terminals can be automatically selected and connected.

In the above embodiment, the number of networks in the incomplete group of two-stage links, the number of primary and secondary switch groups forming each network, the number of input terminals of each primary and secondary switch group, and the number of output terminals. The number of terminals and the number of lines of the transition link 3 are not limited to the above numbers, but can be set arbitrarily.

[0015]

As described above, according to the present invention, the input terminal to be used and the service type are stored in the storage device in advance, and the control device automatically sets the block rate to the lowest value based on the stored contents. Since the path connection is made by making a selective selection, the path connection at the time of building the station can be efficiently
Moreover, it can be performed at a low block rate.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an example of an automatic MDF device embodying the present invention.

FIG. 2 is a flowchart explaining the operation.

FIG. 3 is a diagram for similarly explaining the operation.

[Explanation of symbols]

1 Automatic MDF device 2-0 to 2-3 Network 3 Cross link 4 Storage device 5 Control device 6 Communication control device 7 Operation terminal 8 Public communication network PS00 to PS09, PS30 to PS39 Primary switch group SS00 to SS04, SS15 to SS19 Two Next switch group

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Masahiro Ito, Masahiro Ito 2-18-2 Nishigotanda, Shinagawa-ku, Tokyo Inside Hasegawa Electric Works Co., Ltd. (72) Hideaki Takahashi 1-1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo No. Japan Telegraph and Telephone Corp. (72) Inventor Toshihiro Kinagawa 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corp.

Claims (1)

[Claims] 1. An automatic MDF device having a network of a plurality of imperfect groups, each of which is composed of a two-stage link having a plurality of primary switch groups and a plurality of secondary switch groups, a cross link between the networks, a storage device and a control device. When connecting the input terminal of No. 1 to the path at the time of building the station, the input terminal and the service type used in advance are stored in the storage device,
An input terminal reservation connection method in an automatic MDF device, wherein input terminals are automatically selected and connected in the order in which the block rate becomes the lowest based on the stored contents.