JPH01212954A - Monitor point resetting system - Google Patents

Abstract

PURPOSE:To reduce the burden of an operator in charge of a maintenance and to execute a stable exchange service by periodically monitoring a first storing circuit for storing a normal state and a second storing circuit for storing a state transition condition, judging an abnormal state when a contradiction is generated and resetting the first storing circuit to the normal state. CONSTITUTION:The area STN of a terminal state number memory is disposed in a storage device 7 and has the addresses of the address of zero to the address of (n) corresponding to the terminal numbers of an extension, a trunk line and a private line similarly to an extension call monitor point memory LMACT, an incoming call response cutting monitor point memory UACT and a preceding cycle scanning result display memory LL. During a speech and a calling or the like, under the state of the extension and the respective states in the trunk line and a private line trunk, the extension call monitor point memory LMACT, the incoming call response cutting monitor point memory UACT and the preceding cycle scanning result display memory LL are respectively compared with the normal states, and when the abnormal state is detected, they are respectively reset to the normal states.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to call origination on an extension circuit, reception of a call on a central office line or private line trunk, and response to an extension circuit, central office line or private line trunk in a storage program control exchange; This invention relates to a monitoring point resetting method for monitoring disconnections.

[Conventional technology]

In this type of conventional storage program control exchange, when finding an extension circuit where it is impossible to detect an outgoing call, a central office line or a dedicated line trunk where it is impossible to detect an incoming call, (1) a maintenance worker Observes the traffic of extension lines, office lines, and leased line trunks, and finds abnormal extension lines, office lines, and leased line trunks.

(2) Upon notification from the user, a maintenance worker tests the extension line, office line, or dedicated line trunk to find an abnormal extension, office line, or dedicated line trunk.

etc.

[Problem to be solved by the invention]

As mentioned above, according to the method of finding an abnormally operating extension line, central office line, or leased line trunk in a conventional storage program control switch, it takes a lot of time for a maintenance worker to notice an abnormality in an extension line, central office line, or leased line trunk. In short, since the extension lines, central office lines, and leased line trunks are then tested and restored, the exchange service of the exchange is degraded until the abnormality is noticed. Furthermore, maintenance must be performed by a large number of skilled maintenance workers. Furthermore, the monitoring point resetting method for the incoming trunk of the storage program control exchange is as follows:
This method, as disclosed in Japanese Patent Publication No. 62-35297, has a problem in that it cannot detect abnormalities when the trunk is not empty, ie, states in which a response cannot be detected and a disconnection cannot be detected.

In view of such problems, the present invention automatically detects a state in which an incoming call cannot be detected in an extension circuit, a state in which an incoming call cannot be detected in a central office line or a private line trunk, and a state in which a response or disconnection is impossible for an extension circuit, central office line, or private line trunk. The purpose of the present invention is to provide a monitoring point resetting method that can detect and automatically recover, reduce the burden on maintenance workers, and provide stable replacement services.

[Means to solve the problem]

The monitoring point resetting method according to the present invention is implemented in a storage program control exchange equipped with an extension circuit, a central office line trunk, a private line trunk, and a central control unit. In a method of monitoring response and disconnection states of extension circuits, central office lines, and dedicated line trunks and resetting them to normal states when there is a discrepancy in these states, the extension circuit is in a state in which a call can be detected. , a first storage circuit stores information that the central office line trunk and private line trunk are in a state in which incoming call detection is possible, and that the extension line circuit, central office line trunk, and private line trunk are in a state in which response detection is possible and disconnection detectable state. The state transition terminal states of the extension circuit, the office line trunk, and the leased line trunk are stored in a second storage circuit, each of the storage circuits is periodically monitored by the central controller, and If there is a discrepancy in the call originating, receiving, answering, and disconnecting states of the terminals of the extension circuit, central office line trunk, and dedicated line trunk, it is determined that these are abnormal states, and the extension circuit, central office trunk, and leased line trunk are By resetting the first memory circuit to the normal state for the line trunk or leased line trunk, it is possible to reduce the number of calls, calls, answers, and disconnections for the extension circuit, central office line trunk, and leased line trunk. It is characterized by being reset to a normal state.

[Effect]

The first storage circuit is configured such that the extension circuit is in a call detectable state, the office line trunk and the private line trunk are in a call detectable state, and the extension circuit, the central office line trunk, and the private line trunk are in a response detectable state and the private line trunk is in a call detectable state. It remembers that it is in a disconnection detectable state. The second storage circuit stores the states of the extension circuit, the central office line trunk, the leased line trunk, and the transition terminal state. The central controller periodically monitors the first and second storage circuits.

If there is a discrepancy in the possible call origination, call reception, response, and disconnection states of the extension circuit, central office line trunk, and leased line trunk in the second storage circuit, the central control unit
It is determined that these are abnormal, and the first storage circuit is reset to a detectable state for the extension circuit, central office line trunk, or leased line trunk.

This detects call origination, call reception, response, and disconnection of extension circuits, central office line trunks, and leased line trunks.

[Examples] The present invention will be described in detail below with reference to drawings showing examples thereof. FIG. 1 is a block diagram of a storage program control switch for implementing the monitoring point resetting method according to the present invention. An extension telephone 1 is connected to an extension circuit 2, and the extension circuit 2 is connected to a call path switch 5. A central office line and a private line (not shown) are connected to a central office line trunk 3 and a private line trunk 4, respectively, and both the central office line trunk 3 and private line trunk 4 are connected to the communication path switch 5. The communication path switch 5 is connected to a central control device 6, and the central control device 6 is connected to a storage device 7.

In this storage program control exchange, the central controller 6 periodically scans the extension circuit 2 according to a call processing program, detects a change in the state of the extension by comparing it with the scanning result of the previous cycle, and then puts the extension in an on-hook state. When the state changes from to off-hook, an extension call is detected. The call processing program performs call processing for this extension based on the call detection. On the other hand, the call processing program periodically scans the detection of extension response and disconnection, as well as the reception, response, and disconnection detection of central office lines and leased lines, and compares the results with the scan results in the previous cycle. There is.

Figure 2 shows an example of the memory area of the first memory circuit, which shows an extension call detection display, an incoming call detection display for a central office line, a private line trunk, and a response and disconnection detection display for an extension, central office line, private line trunk. FIG.

LMACT is an area of extension call monitoring point memory;
ACT is an area for monitoring point memory for incoming call response and disconnection of extension lines, central office lines, and private line trunks, and LL is for detecting changes in extension call origination status and detecting changes in incoming, answering, and disconnecting status of extension lines, central office lines, and private line trunks. This is the area of the previous cycle scan result display memory. These areas each have addresses from address O to address n corresponding to the terminal numbers of extension lines, central office lines, and private lines.

First, when the extension is idle, the extension call monitoring point memory LMACT is "1" and the previous cycle scan result display memory L
L is "0" (the extension on-hook state is "0" and the off-hook state is "l").

The extension call scanning program scans the extension circuit 2 at a predetermined period, and for extensions for which the extension call monitoring point memory LMACT is set to "1", scans the scan results and the scan results of the previous cycle scan result display memory LL. Compare and change the status from "0" to "
The extension that has changed to "1" is treated as an extension call and a call process is performed. However, if the extension call monitoring point memory LMACT is "0", no extension call detection processing is performed even if the extension calls. That is, the extension call monitoring point memory LM
If the content of ACT is "0", even if the previous cycle scan result display memory LL is "0" and the extension circuit scan result is "1", the change is invalid. Therefore, when a change in the state of the extension is detected, the central control unit 6 uses the call processing program to set the extension call monitoring point memory LMACT to "0" so as not to detect subsequent calls.

Next, when the extension is in the busy state after making a call, the incoming call response disconnection monitoring point memory UACT is set to "1" and the previous cycle scan result display memory LL is set to "1". The incoming call response disconnection scanning program scans the extension circuit 2 at regular intervals, and displays the scan results and the previous cycle scan display memory L for the extensions for which the incoming call response disconnection monitoring point memory UACT is set to "1".
The results of scanning L are compared, and the extension whose status changes from "1" to "0" is disconnected and released.

At this time, the incoming call response disconnection monitoring point memory UACT is set to "0".
By setting the extension call monitoring point memory LMACT to "1", it is possible to detect an extension call. Therefore, even though the extension is vacant for some reason, "1" is not set in the extension call monitoring point memory LMACT, or "1" is not set in the extension call monitoring point memory LMACT.
If the previous cycle scan result display memory LL is set to "1" and has not returned to "o", it will no longer be possible to detect an extension call. Similarly, during a call,
If the incoming call response disconnection monitoring point memory UACT and the previous cycle scan result display memory LL are not set correctly in other states such as ringing, other extension states, central office line trunks, and leased line trunks, then Incoming call, answering,
It becomes impossible to detect the disconnection. Causes of such abnormal states on extension lines, central office lines, and leased line trunks include delays, malfunctions, and malfunctions in call processing programs due to abnormal congestion.
There is a connection failure or restoration failure of the extension circuit, central office line, or leased line trunk.

FIG. 3 is an explanatory diagram of a monitoring method for detecting abnormality monitoring point memory and previous cycle scan result memory. STN is an area of a terminal state number memory which is a second storage circuit, and this terminal state number memory area STN is provided in the storage device 7 and is connected to the extension call monitoring point memory LMACT.
, incoming call response disconnection monitoring point memory υACT, and previous cycle scan result display memory LL, it has addresses from address O to address n corresponding to the terminal numbers of extension lines, office lines, and dedicated lines.

FIG. 4 is a flowchart showing the control contents of the central control unit that realizes the function of detecting the abnormality monitoring point memory and the previous cycle scan result display memory and restoring the memory contents.

Now, a case will be described in which the extension call monitoring point memory LMACT is "0" and no extension call can be detected even though the extension line is vacant.

The flowchart in FIG. 4 is a program that is started at predetermined cycles, and in one cycle, TIESTNI! N
After testing one terminal with the number indicated by , the terminal number TESTNHN is updated for testing the next terminal. When this monitoring program is started in a period in which an arbitrary terminal number TESTNBNi (Sl) indicates the above-mentioned abnormal extension, area S of the terminal status number memory corresponding to this extension is
Referring to TN (S2), step (S3) branches to "extension free" processing on the monitoring program, and the extension call monitoring point memory LM is stored in accordance with the contents of step (S3).
^CT is rl, and incoming call response disconnection monitoring point memory UA
It is tested whether CT is "0" and the previous cycle scan result display memory LL is "0". At this time, since the extension call monitoring point memory LMACT is "O", this is recognized as an abnormal state and this extension call monitoring point memory L
Reset MACT to "1". As a result, this extension is restored to a normal state in which a call can be detected.

In addition, other states such as busy, ringing, etc. of the extension line and the central office line,
Similarly, in each state of the leased line trunk, the extension call monitoring point memory LM^CT, incoming call response disconnection monitoring point memory UACT, and previous cycle scan result display memo IJLL are compared with their respective normal states, and if an abnormal state is detected. Reset each to normal state.

〔Effect of the invention〕

As described in detail above, according to the present invention, an extension circuit that cannot detect a call and a central office line that cannot detect an incoming call.

Leased line trunks, extension circuits, office lines, and leased line trunks for which response detection and disconnection detection are impossible can be automatically detected and automatically recovered immediately. Therefore, it is possible to obtain a storage program control exchanger that does not require a large number of maintenance workers, can reduce the burden on the maintenance workers, and can provide stable exchange services.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a storage program control exchange that implements the monitoring point resetting method according to the present invention, and Fig. 2 shows an extension call detection display, a central office line, a dedicated line trunk call detection display, and an extension and dedicated line trunk call detection display. A diagram showing the memory area showing the trunk response and disconnection detection display, Figure 3 is an explanatory diagram explaining the monitoring method for detecting the abnormality monitoring point memory and the previous cycle scan result display memory, and Figure 4 is the central control unit. 3 is a flowchart showing control details. 1... Extension telephone 2... Extension circuit 3...
Office line trunk 4... Dedicated line trunk 5... Call path switch 6... Central control unit 7... Storage device patent Applicant Sanyo Electric Co., Ltd. Agent Patent attorney Noboru Kono Figure 1 01・−−−−−−−−−−−・−−−−−・n Atsushi
2 Picture association 3 Picture

Claims (1)

[Claims] 1. Call originating from the extension circuit, receiving calls from the office line, the private line trunk, and the extension circuit in a storage program control exchange equipped with an extension circuit, a central office line trunk, a private line trunk, and a central control unit. , the response and disconnection states of the central office line and leased line trunk are monitored, and if there is a discrepancy in these states, the system is reset to a normal state, wherein the extension circuit is in a call detectable state; storing in a first storage circuit that the central office line trunk and the private line trunk are in an incoming call detectable state, and further that the extension circuit, the central office line trunk, and the private line trunk are in a response detectable state and a disconnection detectable state; The state transition terminal state of the extension circuit, central office line trunk, and leased line trunk is
an extension circuit in a second storage circuit, each storage circuit being periodically monitored by a central controller;
Making calls in the terminal status of central office line trunks and leased line trunks,
If there is a discrepancy in the possible states of receiving, answering, and disconnecting calls, it is determined that they are in an abnormal state, and the first storage circuit is set to a normal state for the extension circuit, central office line trunk, or leased line trunk. A monitoring point resetting method characterized in that, by resetting, at least one of call origination, call reception, answering, and disconnection of an extension circuit, a central office line trunk, and a dedicated line trunk is reset to a normal state.