JPH1051873A - Digital cross connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confirm the propriety of the entire path including packages before and after a switch section in advance in the case of executing cross connection to the switch section by which an optional input line is connected to an optional output line. SOLUTION: In the case of executing cross connection to a switch section 4, the propriety of a sink side state and a source side state is detected by referencing a cross connection termination point state list 33A in which the sink side state denoting propriety of an input side package of the switch section 4 and the source side state denoting propriety of an output side package of the switch section 4 are set for each of all cross connection points and the propriety of execution of cross connection is decided based on the detection result. Thus, the propriety of path including the switch section 4 is confirmed before execution of cross connection to the switch section 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch which is connected to N input lines and M output lines via respective electronic circuit packages and is capable of connecting an arbitrary input line to an arbitrary output line. The present invention relates to a digital cross-connect device having a section.

[0002]

2. Description of the Related Art A digital cross-connect device of this type is controlled via an interface which logically expresses a device function called a management object. Here, when a cross-connect execution command indicating a connection request of the switch unit is received from the interface, the cross-connect device first determines whether there is a switch unit to be controlled, and then determines whether or not the switch unit to be controlled is normal. It is determined whether switching connection is possible. If it is determined that a normal switching connection is possible, the command is executed to control the connection of the switch unit. As a result, among the N input lines connected to the input terminal side of the switch unit and the M output lines connected to the output terminal side of the switch unit, the input line and the output line corresponding to the above command are connected. Is done.

[0003]

In this type of cross-connect device, in addition to the switch section, an electronic device serving as an interface between the switch section and each of the lines connected to the input and output sides of the switch section. A circuit package is provided. Here, when the cross connect command is executed, the conventional device determines whether or not the normal switching connection of the switch unit is possible as described above, and executes the cross command if it is determined that the switching connection is possible. The connection of the switch is controlled. For this reason, in the conventional device,
After the cross-connect control is executed for the switch unit and the switch circuit is normally switched and connected, the electronic circuits before and after the switch unit are output until the signal from the input line is output to the output line through the corresponding connection path. There has been a problem that it is not possible to confirm whether or not the cross connect has been normally executed for the entire path including the package.

Accordingly, an object of the present invention is to make it possible to confirm in advance whether or not the entire path, including the packages before and after the switch unit, is correct when executing the cross connect to the switch unit.

[0005]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a switch unit having N input terminals and M output terminals, a switch unit having each input terminal and N switch terminals. A switch unit comprising a plurality of first packages and a plurality of output terminals of the switch unit disposed between the input lines and a plurality of second packages disposed respectively between the M output lines; In a digital cross-connect device that executes cross-connect control to connect an input line and an output line, a sink state indicating whether the first package is correct and a source state indicating whether the second package is correct are all cross-connected. A cross connection termination point status list for managing over connection points is provided.

Further, detecting means for detecting the corresponding sink-side state and source-side state in the cross-connection termination point state list at the time of executing the cross-connect control, and the detecting means for detecting one of the corresponding sink-side state and source-side state. Means for preventing the execution of the cross-connect control when an abnormality is detected. In addition, if the package is mounted and is normal, the corresponding state of the cross connection termination point state list is set as normal, and if the package is mounted and one of the case of failure and the case of non-mounting, A list creating means for setting a corresponding state of the cross connection termination point state list as abnormal is provided.

The cross-connection termination point state list manages a sink-side state indicating whether the first package is correct and a source-side state indicating whether the second package is correct for each cross connection point. As a result, it is possible to confirm whether the entire path including the switch section is correct or not before executing the cross-connect control on the switch section. Also,
When executing the cross-connect control, the corresponding sink side state and the source side state in the cross connection termination point state list are detected, and if any one of the relevant sink side state and the source side state is detected, the cross connection control is performed. Execution is blocked. As a result, the corresponding sink-side state and source-side state are accurately detected in advance, and unnecessary cross-connect control is avoided. If the package is mounted and in a normal state, the state corresponding to this package in the cross-connection termination point state list is set to normal, and if the package is mounted and in a failure state, or in a non-mounting state. In some cases, the status corresponding to this package in the cross connection termination point status list is set as abnormal. As a result, a cross connection termination point state list can be accurately created.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of a digital cross-connect device according to the present invention. In FIG. 1, reference numeral 1 denotes input lines Li1 to L connected to N input lines Li1 to LiN and M output lines Lo1 to LoM.
A digital cross-connect device (hereinafter referred to as a cross-connect device) 2 for connecting any one of the iNs and any of the output lines Lo1 to LoM, and a management device 2 for transmitting a cross-connect command a to the cross-connect device 1 to perform the cross-connect control. Department. Here, the management unit 2 is an interface that logically represents a device function called a management object. When the management unit 2 sends the above-described cross-connect command a, which is logical information, to the cross-connect device 1, The device 1 converts this logical information into physical information and outputs it to a switch unit 4 described later provided therein, and connects the input side and the output side of the switch unit 4.

In FIG. 1, the cross-connect device 1 is configured as follows. That is, 3 is a control unit for performing cross-connection control to the switch unit 4 described later, the switch unit described above is _{4, 5 1 ~5 N, 6} 1 ~6 M each input line Li1～LiN, output line Lo1~ Interface package that is an interface of LoN, 7 _{1 to} 7
Upstream package _N is the interface with the interface package 5 ₁ to 5 _N and a switch unit 4, 8 _1-8
M is a downstream packaging an interface with the interface package 6 ₁ to 6 _M and the switch unit 4.

[0010] That is, the switch section 4, each of the upstream package 7 ₁ to _7-N and Interface Package 5 ₁
Together they are connected to each individual to N input lines Li1~LiN through to 5 _N, each downstream package 8 ₁
It is connected to each individual to the M output lines Lo1～LoN to 8 _M and via the interface package 6 ₁ to 6 _M. Then, under the control of the control unit 3, control is performed such that any one of the N input lines is connected to any one of the M output lines.

[0011] Thus the cross-connect control for the switch unit 4 is performed by the control unit 3, when the path of the switch unit 4 is set so that time for example, the upstream package ₇₁ and the downstream package 8 ₂ are connected, the interface external interface signal from the input line Li1 side through the package 5 _1, upstream package 7
_1, the switch unit 4 is sent downstream package _82, and an external interface signal through the interface package 6 ₂ to the output line Lo2 side.

The control unit 3 includes the managed object software 30, the CPU 31, and the status / alarm collection unit 3.
2 and a management database 33 are provided. Here, the state / alarm collection unit 32 detects the right / wrong state of the switch unit 4 described above, the right / wrong state of each of the packages that are interfaces with each line, and the mounted / unmounted state thereof. In this case, when the management object software 30 inputs the status of each package collected by the status / alarm collection unit 32 via the CPU 31, the management object software 30 executes
A normal or abnormal state is set according to the detected state on a corresponding area of a later-described cross connection termination point state list 33A in the management database 33 in the management database 33 to create the list 33A.

Thereafter, the above-mentioned cross connect command a is sent from the management unit 2 to the management object software 30.
When the managed object software 30 receives the command a and instructs the operation via the CPU 31, the cross connection control for the switch unit 4 is performed. Here, when the managed object software 30 performs the cross connect control on the switch unit 4 via the CPU 31, the corresponding list in the cross connection termination point state list 33A is referred to. If the corresponding interface package, upstream package, and downstream package are normal, the managed object software 30 executes the cross connect control via the CPU 31. If any of the corresponding packages is abnormal or not mounted, a signal b indicating cross-connect failure is sent to the management unit 2 without performing cross-connect control, and the process is terminated.

FIG. 2 is a diagram showing the setting status of such a cross connection termination point status list 33A. Here, the sink (sink) side in FIG. 2, each package of the input line side of the switch unit 4 (i.e., interface package 5 ₁ to 5 _N, the upstream package 7 ₁ to _7-N) indicates the source (source) side shows the package of the output line side of the switch unit 4 (i.e., interface package 6 ₁ to 6 _N, downstream package 8 ₁ ~8 _N). Each state on the sink side and the source side is defined as a normal state when the corresponding package is mounted and the package is normal, and is defined as an abnormal state when the corresponding package is not mounted or the package is in a failure state. Is set in the list 33A.

Further, the cross connection termination point in FIG. 2 is defined as follows. That is, the termination point "0001" Interface Package 5 ₁ in FIG. 1, the upstream package _71, the downstream package 8 _1, an interface package _61, of which the sink side interface package 5 ₁ and the upstream package _71, the source side is a downstream package ₈₁ and the interface package 6 _1. Further, the termination point "0002", the interface package 5 _2, upstream package 7 _2, downstream package 8
_2, an interface package 6 _2, of which the sink side interface package 5 ₂ and the upstream package 7 _2, the source side is the downstream package ₈₂ and interface package 6 _2.

Hereinafter, terminal points "0003" to "wxyz"
Is similarly defined. However, for example, many number of output lines to the input number of lines, if such that M> N is equivalent to, for example, termination point "wxyz" (downstream package 8 _M and interface package 6 _M of trailing on the list 33A With regard to ()), there is no package on the sink side, and therefore, the state on the sink side is set as abnormal (package not mounted). In this way, all terminal points of the device are defined in the cross connection terminal point state list 33A, and the correctness of the sink side state and the source side state is set for all terminal points which are all cross connection points. Then, according to the normal or abnormal state of each terminal point of the list 33A thus defined, whether or not the cross-connect control of the switch unit 4 is possible is determined.

Next, FIG. 3 is a flow chart showing the operation of the main part of the present invention, showing the operation when the managed object software of the control unit 3 performs the cross-connect control via the CPU 31. The operation of the main part of the present invention will be described in detail according to this flowchart. When the cross connect command a is sent from the management unit 2 to the managed object software 30, the managed object software 30 determines that the “cross connect control request” in step S1 is “Y”. In this case, the management object software 30 checks that the normal switching connection of the switch unit 4 is possible based on the information collected by the status / alarm collection unit 32, and in step S2, through the CPU 31, the cross connection termination point status list. The sink end point indicated by the cross connect command a in 33A is searched, and in step S3, it is determined whether the state of the sink end point is normal or abnormal.

Here, if the sink-side termination point is faulty or not mounted and is set as abnormal in the list 33, the management object software 30 does not perform cross-connect control on the switch unit 4 and proceeds to step S7.
Then, after ending the cross-connect processing, a response signal b indicating the unsuccessful cross-connect is returned to the management unit 2.
If the state of the sink-side termination point is normal, the managed object software 30 proceeds to step S4, and then searches the source-side termination point corresponding to the command a in the cross connection termination point state list 33A.
In step S5, it is determined whether or not the source end point is correct.

If the source-side terminal point is faulty or not mounted and is set as abnormal in the list 33, the cross-connect control for the switch unit 4 is not performed as in the case of the sink-side terminal point. The process proceeds to step S7, and after completing the cross-connect processing, returns a response signal b indicating the unsuccessful cross-connect to the management unit 2. on the other hand,
The state of the corresponding source side termination point is assumed to be a normal state in the list 33.
If the determination in step S5 is "Y",
The management object software 30 controls the switch unit 4 via the CPU 31 at step S6 to execute cross-connect control for connecting the corresponding sink side termination point and the source side termination point.

As described above, the cross connection termination point status list indicating the validity of each package, which is the interface between the switch unit 4 and each line, is provided. From above, the state of each package on the upstream side (input side) and each package on the downstream side (output side) of the switch section 4 are detected, and if the respective packages are mounted and they are in a normal state, the cross-connect processing is performed. Is executed, and if any of the corresponding packages is faulty or not mounted, the process is immediately terminated without executing the cross-connect process. As a result, whether or not to execute the cross-connect command after judging the state of each package (electronic circuit package) at the upstream (upstream) and downstream (downstream) of the switch unit 4, which cannot be confirmed by the conventional device, is determined. Can be determined. Therefore, the management object software 30 can confirm the normality of the cross-connect before executing the cross-connect control.

In this embodiment, each of the upstream package and the downstream package of the switch section 4 has a cross connection termination point for each one package. However, each package has a plurality of cross connection termination points. Even with such a configuration, the same effect can be obtained. In this embodiment, the status / alarm collection unit 32 detects the normal or abnormal state of each package. However, when a failure or the like occurs in each package, this is notified from each package to the CPU 31 by an interrupt signal. You may make it notify.

[0022]

As described above, according to the present invention, a cross-connection termination point status list is provided, and the list is used to indicate whether the first package connected to the input side of the switch section is correct or not. In addition, since the source side state indicating the validity of the second package connected to the output side of the switch unit is managed for every cross connection point, the switch unit is included before the execution of the cross connect control for the switch unit. It is possible to confirm the correctness of the entire route. Also, when executing the cross-connect control, the corresponding sink-side state and the source-side state of the cross-connection termination point state list are detected, and if any one of the relevant sink-side state and the source-side state is detected, the cross-connect is performed. Since control execution is prevented, the relevant sink-side state and source-side state can be accurately detected before executing cross-connect. As a result, unnecessary cross-connect control is performed in the event of an abnormality. Can be avoided. When a package is mounted and in a normal state, the state corresponding to this package in the cross connection termination point state list is set as normal,
If a package is mounted and is in a failure state or is in a non-mounted state, the status corresponding to this package in the cross connection termination point status list is set as abnormal. Can be created.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a cross connection termination point state list provided in the apparatus of the embodiment.

FIG. 3 is a flowchart showing an operation of the apparatus in the embodiment.

[Explanation of symbols]

1. Digital cross-connect device 2. Management unit 3.
Control unit, 4 ... switch _{unit, 5 1 ~5 N, 6 1} ~6 M ... Interface Package, 7 ₁ to _7-N ... upstream package, 8 ₁ to 8 _M ... downstream package, 30 ... managed object software, 31 ... CPU , 32... Status / alarm collection unit, 33... Management database, 33A.

Claims (3)

[Claims] 1. N (N is an integer) input terminals and M (M
Is an integer) number of output terminals, a plurality of first packages disposed between each input terminal of the switch unit and each of the N input lines, and each output terminal of the switch unit. A digital cross-connect device, comprising a plurality of second packages disposed between each of M output lines and performing a cross-connect control on the switch unit to connect an input line and an output line. A cross-connection termination point state list for managing a sink-side state indicating the validity of the first package and a source-side state indicating the validity of the second package over all cross connection points. Digital cross connect device. 2. The cross-connect device according to claim 1, wherein at the time of executing the cross-connect control, detecting means for detecting the corresponding sink-side state and source-side state of the cross-connection termination point state list; Means for preventing the execution of the cross-connect control when an abnormality in either the side state or the source side state is detected. 3. The cross-connect device according to claim 1, wherein when the package is mounted and normal, a state corresponding to the package in the cross-connection termination point state list is set as normal, and the package is mounted. Digital cross-connect, characterized in that a list creation means is provided for setting a state corresponding to this package in the state list of the cross-connection termination point as abnormal in one of the case of failure and the case of non-mounting. apparatus.