JPH0241945B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a trunk invalid hold detection device for an electronic exchange.

1. Configuration of Conventional Example and Its Problems FIG. 1 shows a block diagram of a conventional program-controlled trunk invalidity hold detection device for an electronic exchange. In Figure 1, 1 is the network (NW), 2 is the line circuit (LC), 3 is the trunk (TRK), 4 is the communication path control unit, 5 is the central control unit, 6 is the trunk monitoring program, and 7 is the trunk. This shows the status table.

Next, the operation of the above-mentioned device will be explained.

First, the state of the trunk 3 is always recorded in the trunk state table 7 as whether it is in use or not in use by a trunk monitoring program 6 that is activated periodically over time. Use if in use/
The unused flag is set to "1", and if it is unused, "0" is recorded. At the same time, the trunk monitoring program 6 records the trunk use start time in the trunk table 7 when the state changes from unused to used. In addition, the trunk monitoring program 6 scans the trunk 3 and determines that the trunk 3 is in use and that the in-use flag of the trunk 3 is "1".
If so, the monitoring program 6 compares the current time with the trunk usage start time. If the trunk 3 is used for a certain period of time or more, an output device such as a typewriter prints out the status of the trunk as invalid, alerts the maintenance personnel, and the maintenance personnel inspects whether the trunk is actually invalid or not. If an abnormality was discovered, failure recovery processing was performed.

That is, in detecting trunk invalidity and hold in the conventional electronic exchange described above, the state of the trunk is always recorded in a memory as to whether the trunk is in use or not in use by a call processing program. A monitoring program that is activated periodically prints a message on an output device such as a typewriter when the same trunk is in use for a long period of time, alerting the maintenance personnel, and confirming that the trunk is actually in use. It was designed to check whether the status was invalidated and to perform failure recovery processing. However, in the case of a private electronic switchboard, for example, when an invalid hold actually occurs on a trunk, even during the time period until a maintenance person discovers the invalid hold and performs recovery processing, the central exchange cannot The drawback was that you would be charged a fee.

OBJECTS OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks of the conventional technology, and aims to automatically detect trunk invalidation and perform recovery processing even when the system is unmanned, such as at night.

Structure of the Invention In order to achieve the above object, the present invention provides a processor unit that stores the status of each line circuit and trunk and has a monitoring program. The state of the trunk is inspected.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 8 denotes a communication path control unit, 9 a network (NW) that forms a communication path according to commands from the communication path control unit 8, and a line circuit that monitors the status of telephones 10 ₁ , 10 ₂ to _10o . (LC). 11
is a processor unit that receives data from the line circuit, processes the data, and sends control signals to the line circuits 10 ₁ to 10 _o , and each line circuit 10 ₁ to 10 _o
In response to this, the state is recorded in memory.
12 ₁ , 12 ₂ to 12 _n are central office line trunks (TRK). 13, like the processor unit 11, sends control signals to the trunks 12 ₁ to 12 _n , receives data from each trunk 12 ₁ to 12 _n , and records the status of the trunks 12 ₁ to 12 _n in memory. It is a processor unit. 14 is a line circuit 10 ₁
~10 _n and its upper processor unit 11, 15 is each trunk 12 ₁ ~ 12 _n
a data bus between the processor 13 and its upper processor 13;
16 is an upper processor unit and a communication path control section 8
It is a data bus between

The operation of the above configuration will be described below.

First, the processor units 11 and 13 use line circuits (LC) 10 ₁ to 10, which the electronic exchange has as a resource.
10 _o and trunks 12 ₁ to 12 _n , and communication between the resources is performed using these resource addresses.

In addition, the processor units 11 and 13 have a table for each resource address, grasp the own resource address, resource status, and partner resource address status as table information, and use this information to determine whether trunk invalidation is pending. Detection is performed. Note that the own resource address is a resource address corresponding to the table. The resource status indicates the status of resource i (idle, on call, on hold, etc.). The destination resource address is a resource address that has a relationship with resource i, and updates of the destination resource address and resource status are performed by the call processing program.

Now, detection of trunk invalidation is performed by a trunk monitoring program that is activated periodically. The trunk monitoring program of the upper processor 13, which manages the control of trunk j, checks the resource status of the table containing the resource address corresponding to trunk j for which an invalidation reservation check is to be performed. If the state is that the resource of the other party exists (talking, on hold, on hold, etc.), an inspection request is sent to the resource of the other party via the data bus 16 to see if it has a call processing relationship with trunk j. , through communication between the upper processors 13. Here, having a call processing relationship with trunk j means that two resources each have the other party's resource address in the other party's address column of their own resource table.

On the other hand, the monitoring program of the processor 11, which receives a request for an invalidation suspension check from the trunk side, checks whether the resource address of the request source matches the contents of the resource address of the request destination. If they do not match, the trunk j and the resource that received the invalid inspection request are
The trunk monitoring program 13 determines that there is no relationship and notifies the trunk monitoring program 13 that the trunk j is on hold as invalid, and upon receiving the notification, the trunk monitoring program 13 performs recovery processing for trunk j because the trunk j is on hold as invalid. conduct. On the other hand, if they match, it is determined that the trunk j and the resource for which the inspection request has been requested have a call processing relationship, and that the trunk j is not on hold.

Effects of the Invention As described above, the present invention stores the states of line circuits and trunks, and
A processor unit having a monitoring program is provided, and the state of the line circuit and trunk is monitored by the monitoring program that is activated periodically, and the state of the trunk is inspected by comparing the two. Accordingly, it is possible to accurately detect whether or not the trunk is held invalid based on the discrepancy between the two, and the trunk restoration process can be performed automatically and in a short period of time, which is highly effective. There is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional central office line trunk invalid suspension detection device for an electronic exchange, and FIG. 2 is a block diagram of a central office line trunk invalid suspension detection device for an electronic exchange according to an embodiment of the present invention. 8... Call path control unit, 9... Network, 1
0... Line circuit, 11, 13... Processor unit, 12... Office line trunk.

Claims (1)

[Claims] 1. A line circuit that monitors the status of each telephone, a trunk that connects each station, a call path control unit that controls the line circuit and the trunk to execute a call, and a line circuit that corresponds to the line circuit and the trunk, respectively. , a processor unit having a monitoring program that stores each resource address, resource status, and partner resource address and periodically monitors these. circuit,
The resource address, resource status, and partner resource address of the trunk are respectively stored in the processor unit.
A trunk invalid suspension detection device for an electronic exchange configured to detect by comparing with a partner resource address and determine invalid suspension when the two do not match.