JPS5991768A - Detector of ineffective holding of trunk of electronic exchange - Google Patents

Abstract

PURPOSE:To find out early the ineffective holding of a trunk automatically by storing the state of a line circuit and a trunk corresponding to them and checking synchronizingly the state of the trunk by a supervisory program of a processor. CONSTITUTION:Processor units 11, 13 give an address to line circuits (LC) 101- 10n and trunks 121-12m given as the resource of an electronic exchange, and have own resource address and status table of resource and opposite resource address at each resource address. The processor 13 checks the state of resource by the resource address table of a trunk being ineffective holding check objective by a supervisory program started periodically. When the opposite resource is provided, the check whether or not the trunk has any relation on the call processing is requested to the processor 11. The supervisory program of the processor 11 checks the coincidence of the content of the resource address of the requested and requesting party, and when they are not coincident, the ineffective holding of the trunk is informed to the processor 13, which restores the trunk.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for detecting trunk invalidation in an electronic exchange.

Structure of a 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 FIG. 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 controller, 6 is the trunk monitoring program, and 7 is the trunk status. It shows a table.

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

First, the status of the trunk is activated periodically over time, and the trunk monitoring program 6 constantly monitors the status of the trunk.
Whether the trunk is in use or unused is recorded in the trunk status table γ. If it is in use, the used/unused flag is set to "1", and if it is not used, "○" 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 in use. In addition, trunk monitoring program 6
scans the trunk 3, and if the trunk 3 is in use and the in-use flag of the trunk 3 is "1", the monitoring program 6 compares the current time with the trunk use start time. If the trunk 3 is in use for more than a certain period of time, an output device such as a typewriter will print out a message indicating that the trunk is disabled, alert the maintenance personnel, and the maintenance personnel will inspect the trunk to see if it is actually disabled or not. If a problem is discovered, trouble recovery processing is performed.

In other words, in order to detect trunk invalidity and hold in the conventional electronic exchange described above, the state of the trunk is constantly recorded in memory as to whether it is in use or unused by a call processing program, and a monitoring program that is activated periodically. , if the same trunk is in use for a long period of time, it is printed on an output device such as a tie writer to alert the maintenance personnel, who then checks whether the trunk is really on hold as disabled and performs trouble recovery processing. That's what I was doing. However, in the case of a private electronic branch exchange, for example, when an invalid hold actually occurs on a trunk, a maintenance person discovers the invalid hold,
The drawback was that even during the time when the recovery process was being carried out in the trenches, charges were charged by the local exchange.

OBJECTS OF THE INVENTION The present invention is intended to eliminate the above-mentioned drawbacks of the prior art, 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 state of each line circuit and trunk and has a monitoring program. This is to check the condition of the trunk.

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

In FIG. 2, 8 is a communication path control unit, and 9 is a network (NW) that forms a communication path according to instructions from the communication path control unit 8.
, 101, 102 to 1Qn are line circuits (LC) that monitor the status of the telephone. 11 receives and receives data from the line circuit, processes the data, and connects the line circuits 101 to 10n.
0121゜122~12m corresponds to each line circuit 10□~1Qn and records its status in memory.
K) 013 sends control signals to the trunks 121-12m in the same way as the processor unit 11, receives data from each trunk 121-12m, and sends control signals to the trunks 121-12m.
This is a processor unit that records the 12m status etc. in memory. 14 is a data bus between the line circuits 1 to 10 and their upper processor unit 11; 15 is a data bus between each trunk 121 to 12m and its throne processor 13; 16 is a data bus between the upper processor unit and the 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 assign addresses to the line circuits (LC) 1o1 to 1Q and trunks 121 to 12m that the electronic exchange has as resources, and communicate between the resources using these resource addresses. .

Further, the processor unit 11.13 has a table for each resource address, grasps the own resource address, resource status, and partner resource address status as table information, and uses these information to detect trunk invalidation pending. The implemented resource address is the resource address corresponding to the table. The resource status is the status of resource 1 (playing).

(call in progress, call on hold, etc.). Destination resource address (d) is the address of a resource that has a relationship with resource 1, 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 the trunk, checks the resource status of the table containing the resource address corresponding to the trunk j for which the invalidation pending check is to be performed. If the state has the other party's resources (busy).

On hold, on hold 2, etc.), for the other party's resources,
A request to check whether there is a relationship with trunk j in terms of call processing is made through communication between upper processors 13 via data bus 16. 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, it is determined that there is no relationship between the trunk J and the resource for which the inspection request of invalidity has been requested, and the trunk monitoring program 13 is notified that the trunk J is invalid and pending, and the system receives the notification. The trunk monitoring program 13 performs a recovery process for trunk j since the trunk j is held invalid. 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 is provided with a processor unit that stores the states of line circuits and trunks and has a monitoring program, and the state of the trunks is determined by the monitoring program that is started synchronously. By inspecting this, it is possible to detect the invalidity of the trunk at an early stage, and to have the program automatically perform the trunk recovery process in a short time, which is very effective.

[Brief explanation of the drawing]

FIG. 1 is a schematic 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, 10... Line circuit, 11.13...
・・・Process、・Sauninoto、12・・・・・・Station line trunk. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2

Claims (1)

[Claims] 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 perform a call; the line circuit;
and a processor unit that stores the state of the trunk and has a monitoring program, and the state of the trunk is inspected via the communication path control unit by the monitoring program that is activated periodically. An Ihara trunk invalid hold detection device for an electronic exchange, characterized in that: