JP3361766B2 - ATM equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a device for terminating signals, which is composed of a physical layer and an ATM (Asynchronous Transfer Mode) layer.
The present invention relates to a TM device, and particularly to an ATM device having a function of outputting a contact in response to a failure detected at an ATM layer termination section.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional ATM.
2 is a block diagram of the device 10. FIG. This ATM device 10
A plurality of line interface units 11 to 13 for inputting and outputting a main signal, and line interface units 11 to 1
The failure collection unit 14 that collects the failure items that have occurred or recovered in step 3, the contact output factor storage unit 15 that stores the contact output conditions registered by the user and the contacts that should be output, and the contact output factor storage unit 15 are searched. By doing so, the output contact control unit 16 that determines whether the occurrence or recovery of the faults collected by the fault collection unit 14 is the target of the contact control, and the output contact control unit 16 controls the contact output or the release of the contact output. The contact output parts 17 and 18 are provided.

The line interface units 11 and 12 can output a main signal to or from the line. The contact output units 17 and 18 collect alarm output signals from all line interface units and all device control units and respond to the degree of affecting the device itself or network operation,
It is possible to aggregate the contact output conditions of some predetermined contacts and output them to an alarm display device outside the device.

In FIG. 5, two ATM devices 10A and 10B having the same structure as the ATM device 10 are adapter devices 2A and 2B.
Is a configuration example of a network connected to a line via
ATM devices 10A, 10B, adapter devices 2A, 2B for establishing bulk resynchronization by contact input, and alarm display device 3 for displaying alarms from ATM devices 10A, 10B.
It is composed of A, 3B and a plurality of lines 4. Adapter device 2A,
2B bundles a plurality of lines and is connected to the ATM devices 10A and 10B by one physical interface.

In this configuration example, the adapter devices 2A, 2B
If a device abnormality occurs in the ATM device 10A, 10A, 10
At B, it is recognized that there is an abnormality in the communication path including the line, and contact outputs are made to the alarm display devices 3A and 3B to display an alarm. The user can recognize the display and maintain each network device.

[0006]

In the above-mentioned prior art, the alarm display devices 3A and 3B are irrespective of whether the ATM devices 10A and 10B are directly connected to the line 4 or via the adapter devices 2A and 2B. The contact output condition for the contact output to is fixed in advance. Therefore, the network (A
Insufficient information was available to isolate faults in TM devices, adapter devices, lines, etc., and in order to do so, the network was usually stopped.

As an adapter device, in recent years, there is an adapter device that allows a plurality of inexpensive lines to be bundled (bulk operation) and used as one line. Adapter devices often have a means to recover from a failure by receiving contact input and restarting or establishing bulk resynchronization. Very often it can be restored by establishment.

An AT having a contact output function of the prior art
In the mode in which the M device is restarted or bulk resynchronization is established by contact input, and the contact is connected to the adapter device in the preceding stage of the line connection, it is considered that the adapter device is restarted or bulk resynchronization is established. However, the contact output is not necessarily specified by specifying the failure caused by the adapter device.

Therefore, when the ATM device detects a failure that is not caused by the adapter device or the line and outputs a contact, all communication on the network using the line passing through the adapter device is inadvertently disconnected. There is.

Therefore, it is conceivable to control the adapter device in earnest through the contacts of the ATM device. But,
In this case, as the contact output condition that can be output from the ATM device to the adapter device, the contact output condition that can restart the adapter device or establish the resynchronization of the bulk at a timely timing can be selected, and if the contact output condition is met. It is an issue to output the contact to and to be able to cancel the contact output when the contact output condition is not satisfied.

The present invention has been made to solve such a conventional problem, and when an ATM device is connected to a line via an adapter device, restart or bulk resynchronization is established by contact input. A flexible contact output condition according to the network form is formed for the adapter device that performs the operation for early recovery of the network failure, and the condition that the adapter device or the line is clearly a failure is detected, and the adapter device is made more effective. It is an object of the present invention to provide an ATM device capable of restarting or establishing bulk resynchronization.

[0012]

In the ATM device of the present invention, it is common to connect to a line via an adapter device.
Via at least one of contact output and contact input.
A line interface section that is electrically connected to the adapter device and that inputs and outputs the main signal, a failure collection section that collects failure items that have occurred or recovered from the line interface section, registered contact output conditions and output The contact output factor storage unit that stores the desired contacts and the contact output factor storage unit are searched to determine whether the occurrence or recovery of the failure collected by the failure collection unit is the target of contact control. Output contact control unit, contact output unit whose output or contact output is controlled to be released by the output contact control unit, and setting input unit for registering the contact output conditions of each contact of the contact output unit in the contact output factor storage unit And the obstacle collection section
If the problem is one that was collected in
In this case, according to the registered contact output conditions, the adapter device
Reboot or bulk resync establishment
Is to shall and characterized in that form.

According to the present invention, when the ATM device is connected to the line via the adapter device, the condition in which the adapter device or the line is obviously faulty is detected, and the adapter device is restarted more effectively or An ATM device capable of performing bulk resynchronization establishment or the like can be obtained.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a line interface unit connected to a line via an adapter device for inputting / outputting a main signal, and a fault item generated from the line interface unit. The failure collection unit that collects the recovered failure items, the contact output factor storage unit that stores the registered contact output conditions and the contacts to be output, and the contact output factor storage unit Output contact control unit that determines whether the occurrence or recovery of a failure is subject to contact control, a contact output unit that controls the output of the contact or the cancellation of the contact output, and the contact output And a setting input unit for registering the contact output condition of each contact of the unit in the contact output factor storage unit.

According to the present invention, in a network configuration in which a connection is made to connect to a line through an adapter device for restarting or establishing bulk resynchronization, a user specifies a contact output condition for each contact from a setting input section. By doing so, the ATM device has an effect of reliably restarting the adapter device or establishing bulk resynchronization through the contact point due to a failure detected on the line interface.

According to a second aspect of the present invention, in the first aspect of the invention, a contact point for controlling the adapter device by enabling contact control of any contact point of the contact point output section via the output contact point control section. A control input unit is provided.

According to the present invention, the designated contact is output from the contact control input unit via the output contact control unit, so that the adapter device connected to the contact is forcibly controlled. .

According to a third aspect of the present invention, in the first aspect of the invention, there is provided a contact point configuration management section for registering addition or deletion of a contact point of the contact point output section according to the network configuration. The contact output condition is registered in the contact output factor storage unit from the setting input unit.

According to the present invention, an extension contact is added according to the network configuration and registered in the contact configuration management unit,
For the added contacts, the contact output conditions can be registered in the contact output factor storage section to perform contact control similar to other contacts, and when the network configuration has changed and is no longer necessary, It has the effect that it can be removed and deleted from the contact configuration management unit.

FIG. 1 shows an embodiment of the present invention.
~ It demonstrates using FIG.

(Embodiment 1) FIG. 1 is a block diagram showing a configuration example of an ATM device according to Embodiment 1 of the present invention. In the figure, the same parts as those shown in FIG.

The ATM device 1 according to the present embodiment has the line interface units 11 to 13, the fault collecting unit 14, the contact output factor storage unit 15, the output contact control unit 16, the contact output units 17 to 18, and the extended contact output unit 19. , Contact terminals 17a-1
9 a and a contact point configuration management unit 20. Further, a contact control input unit 21 for inputting data for forcibly performing contact control to the output contact control unit 16, a contact output factor storage unit 15, and a setting input unit for inputting data regarding contact output conditions to the contact configuration management unit 20. 22 is provided.

The line interface unit 11 is connected to the line 4 and the adapter device 2A (FIG. 3), and as shown in the block diagram of FIG. 2, the physical layer terminating unit 11a and ATM are provided so that the main signal can be input and output. Layer end portion 11b
, Out of cell synchronization collected from it, ITU-
T. (International Telecommunication Union-Telecommunication Standardization Sector) Recommendation I.T.
VP (Virtual Path) according to 610-AIS
(Alarm Indication Signal) status, V
P-RDI (Remote Defect Indication) status, VC (Virtual Channel)
-Has a fault detection unit 11c that detects the occurrence and restoration of the AIS state and the VC-RDI state. The same applies to the other line interface units 12 and 13.

The fault collecting unit 14 collects the fault items that have occurred, the restored fault items and other fault items from the line interface units 11 to 13. The contact output factor storage unit 15 stores each contact output condition designated by the user.

When the contact output condition of the contact output factor storage unit 15 corresponds to the trouble item collected by the trouble collecting unit 14, the output contact control unit 16 outputs the contact of the corresponding contact, and during the contact output. The contact output of the contact is released when the failure that corresponds to the certain contact output condition is recovered.

The output contact control unit 16 searches the contact output factor storage unit 15 in which the contact output condition registered by the user and the contact to be output are stored from the setting input unit 22 to generate the collected failure ( Or recovery) is a target of contact control, and by controlling the contact output units 17 to 19, contact output or contact output is released.

The contact output units 17 to 18 are contact terminals 17a to 18 for outputting a contact to an adapter device or an alarm display device.
a, the extended contact output unit 19 can be added according to the form of the network, and has a contact terminal 19a.

The contact point configuration management unit 20 manages the contact point configuration in the ATM device, and the user can add or delete the contact point according to the form of the network and register it in the contact point configuration management unit 20. can do.

The contact control input section 21 enables the user to control the contact of an arbitrary contact from the outside, which enables the ATM device to control the adapter device.

In the setting input section 22, the user registers the following conditions (1) to (8) as the contact output conditions of each contact.
When it is necessary to add a contact to be output, the user adds the extended contact output unit 19 to the ATM device 1 and performs additional contact registration from the setting input unit 22 to the contact configuration management unit 20.

(1) Loss of cell synchronization of a certain line interface unit, (2) Loss of cell synchronization of a specified specific line interface unit, (3) Loss of cell synchronization of a specified specific line interface unit, or on the same line VP-AIS status of a VP connection or VP-
Detection of RDI state, (4) Loss of cell synchronization of a specific line interface section, or VP-AIS state or VP-RD of a specified specific VP connection on the same line
Detection of I state, (5) Loss of cell synchronization of specific line interface section, or detection of VC-AIS state or VC-RDI state of a VC connection on the same line, (6) Cell synchronization of specific line interface section Detection of VC-AIS state or VC-RDI state of specified VC connection on the same line,
(7) Cell synchronization of the specified specific line interface is lost, or V of a certain VP connection on the same line
Detection of P-AIS status or VP-RDI status or detection of VC-AIS status or VC-RDI status of a certain VC connection on the same line, (8) Loss of cell synchronization of a specific line interface, or designation on the same line VC-AIS status of specified VC connection or V
Detection of C-RDI status, or VP-AIS status or VP-R of specified specific VP connection on the same line
DI state detection.

Next, the operation of the ATM device 1 according to this embodiment will be described. The operation when the "out of cell synchronization of the specified specific line interface section" is selected as the contact output condition for the contact terminal 18a and the line interface section 11 is specified is as follows.

If the failure detecting section 11a of the line interface section 11 detects "out of cell synchronization" as a failure, the failure collecting section 14 collects the event that the failure has occurred, and the output contact control section 16 outputs a contact output. In comparison with the contact output factor of the factor storage unit 15, the contact terminal 18
Since the output condition of "a" is satisfied, the contact output unit 18 outputs the contact of the contact terminal 18a.

When the fault detector 11a detects the restoration of the fault, the fault collector 14 collects it and outputs it to the output contact controller 16
Determines that the condition for canceling the condition during output from the contact terminal 18a is satisfied, and cancels the contact output from the contact terminal 18a via the contact output unit 18.

In this example, the contact terminal 18a is selected as the contact, but the same operation is performed even if this is another contact terminal. In addition, when "out of cell synchronization of the specified specific line interface section" is selected as the contact output condition, if any of the above eight contact output conditions is selected and the corresponding failure occurs The contact output of the corresponding contact is performed, and the contact output of the corresponding contact is released when all the failures that are the contact output conditions are recovered.

An extension contact terminal 19a can be added according to the network configuration and registered in the contact configuration management unit 20. For the added contact terminal 19a, contact control is similarly performed by registering the contact output condition in the contact output factor storage unit 15. Similarly, if there is a change in the network configuration and it becomes unnecessary, the contact terminal 19
It is possible to remove a and delete it from the contact point configuration management unit 20. On the other hand, by causing the contact designated by the contact control input unit 21 to output the contact through the output contact control unit 16, the adapter device forcibly connected to the contact can be controlled.

FIG. 3 is a diagram showing a network configuration in which the ATM device and the adapter device of the present invention are connected by a line.
Devices 1A and 1B, adapter devices 2A and 2B for establishing bulk resynchronization by contact input, and alarm display device 3A,
3B and the ATM display device 1A, 1B to the alarm display device 3A,
Contact output 5A, 5B at the time of failure to 3B and ATM
It has contact inputs 6A and 6B from the devices 1A and 1B to the adapter devices 2A and 2A, and a plurality of lines 4. Each of the adapter devices 2A and 2B bundles a plurality of lines to connect the ATM device 1A and
1B is connected to one physical interface.

The failure in the route from the line 4 of the adapter device 2A to the ATM device 1A is lost in the ATM device 1A, and is detected as the VC-AIS state of the VC connection and the VP-AIS state of the VP connection.

If these are registered as contact output conditions in the ATM device 1A and the contacts are connected to the adapter device 2A, an alarm is displayed on the alarm display device 3A, and at the same time when the failure is detected. , The adapter device 2 by the contact output of the ATM device 1A according to the registered contact output conditions
A will establish bulk resynchronization, enabling recovery from early network failures.

Also, the ATM device 1A of the adapter device 2A
For obstacles from the line to the line 4, the ATM on the other side
The device 1B loses cell synchronization, and VP- of the VP connection
The adapter device 2 detects the AIS state and the VC-AIS state of the VC connection, and according to the registered contact output conditions.
Contact output to B.

At the same time, when VP-RDI and VC-RDI are sent to the ATM device 1A as the ATM terminating operation, the ATM device 1A receives VP-RDI and VC-RDI.
Is received, the VP-RDI state of the VP connection, VC
The VC-RDI state of the connection is detected and contact output is performed to the alarm display device 3A, and at the same time, contact output is performed in order to establish bulk resynchronization of the adapter device 2A which is the true failure point according to the registered contact output conditions.

Although the example of FIG. 3 is a network configuration in the opposite direction, each A according to the network form of the user.
By selecting the contact output condition for the TM device, it is possible to provide a more effective means for isolating the fault in the network.

[0043]

According to the present invention, when the ATM device is connected to the line via the adapter device, the adapter device which restarts or establishes the bulk resynchronization by the contact input is adapted to the network form. An advantageous effect is obtained in which a flexible contact output condition can be formed and the adapter device can be more effectively restarted or bulk resynchronization can be established.

Further, according to the present invention, in the network configuration in which the line is connected through the adapter device for restarting or establishing the bulk resynchronization by the contact input, the user specifies the contact output condition of the ATM device. By
Since the ATM device can reliably restart the adapter device or establish the bulk resynchronization via the contact point due to the failure detected on the line interface, it is possible to shorten the time until the network failure recovery. Can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of an ATM device according to a first embodiment of the present invention.

FIG. 2 is a block configuration diagram of a line interface unit shown in FIG.

FIG. 3 is an example of a network configuration in which an ATM device and an adapter device of the present invention are line-connected.

FIG. 4 is a block diagram of a conventional ATM device.

FIG. 5 is an example of a network configuration in which a conventional ATM device and an adapter device are line-connected.

[Explanation of symbols]

1,1A, 1B ATM device 2A, 2B adapter device 3A, 3B alarm display device 4 lines 5A, 5B contact output 6A, 6B contact input 11-13 Line interface section 11a Physical layer termination unit 11b ATM layer termination unit 11c Fault detection unit 14 Obstacle Collection Department 15 Contact output factor storage section 16 Output contact control section 17-18 Contact output section 19 Extended contact output section 17a to 19a contact terminals 20 Contact point configuration management section 21 Contact control input section 22 Setting input section

Claims (3)

(57) [Claims] 1. A connection to a line via an adapter device and at least one of a contact output and a contact input.
Then , a line interface section that is electrically connected to the adapter device to input / output the main signal, a failure collecting section that collects a failure item that has occurred or has recovered from the line interface section, and a registered contact output The contact output factor storage unit that stores the conditions and the contacts to be output, and the occurrence or failure recovery of the failure collected by the failure collection unit by searching the contact output factor storage unit is the target of contact control. An output contact control unit that determines whether there is a contact, a contact output unit that controls contact output or cancellation of contact output by the output contact control unit, and a contact output condition of each contact of the contact output unit and a setting input unit for registering the cause storage unit, collected the impediments or the condensate in the fault collection unit
Registered contact output condition in case of old obstruction
Reboot the adapter device or restart the bulk
A characterized by being configured to perform synchronization establishment
TM device. 2. The ATM device according to claim 1, further comprising a contact control input unit for controlling the adapter device by enabling contact control of any contact of the contact output unit via the output contact control unit. ATM device characterized by. 3. The ATM device according to claim 1, further comprising a contact configuration management unit that registers addition or deletion of a contact of a contact output unit according to a network configuration, and sets a contact output condition of the added contact. An ATM device characterized by registering from an input unit to a contact output factor storage unit.