JPH07322356A - Method for restoring invalid holding trunk of telephone exchange of mobile object and device therefor - Google Patents

Abstract

PURPOSE:To provide a method and device automatically detecting the invalid holding of the trunk of the telephone exchange of a mobile object in a telephone system of the mobile object and restoring the state of the trunk to its original state. CONSTITUTION:A telephone exchange 2 of mobile object has a trunk monitoring part 23 monitoring the holding state of a trunk and detecting the trunk holding for long time beyond prescribed time, a storage part 24 where the connection information is stored and a central control part 25 extracting subscribers in holding for long time from the connection information, acquiring subscribers' information from a data base via a signal transmission and reception part 26, deciding whether the information is an invalid holding or not, instructing a trunk control part 28 to perform a restoration processing when the invalid holding is decided and displaying the restoration via a notification part 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system, and more particularly to a method and apparatus for recovering an invalid hold trunk of a mobile telephone exchange.

[0002]

2. Description of the Related Art Conventionally, in a mobile telephone exchange, a state in which a trunk is invalidly held often occurs due to disappearance of a wireless disconnection signal or a device failure of the mobile telephone exchange despite the end of a call. The mobile telephone exchange detected the hold trunk for a long time by the trunk monitoring unit, but there was no effective means to judge whether it was an invalid hold or not, and only reported the detection result to the maintenance person. It was up to the maintenance person to decide whether or not the call was held invalid, and the maintenance person who received the report examined the trunk in detail and, if it was held pending, carried out recovery work.

[0003]

However, the above-mentioned conventional method of recovering invalid hold trunks of a mobile switching center is processed by a maintenance person, and the maintenance work is burdened. Therefore, even if an invalid hold trunk is found and the maintenance person is notified, the restoration work is in the maintenance work time zone, and there is a drawback that the restoration is delayed and the trunk is not effectively used.

An object of the present invention is to provide a method and apparatus for recovering an invalid hold trunk of a mobile switching system which automatically detects and recovers the invalid hold trunk.

[0005]

SUMMARY OF THE INVENTION A method for recovering invalid hold trunks of a mobile telephone exchange according to the present invention is a mobile telephone exchange in a mobile telephone system having a mobile telephone exchange and a database for storing mobile subscriber information. The method for recovering an invalid hold trunk according to claim 1, wherein the hold status of the trunk is monitored, a trunk that is overheld for a predetermined time is detected, a subscriber number of the excess hold trunk is detected, and The subscriber information of the person terminal is extracted from the database to determine whether or not the trunk is inactive hold, and when it is determined to be inactive hold, the trunk is released.

Further, detection of the excess hold trunk includes monitoring by a predetermined cycle.

The invalid hold trunk recovery device for a mobile exchange according to the present invention is also used for recovering invalid hold trunks of a mobile telephone exchange in a mobile telephone system having a mobile telephone exchange and a database storing mobile subscriber information. A device, a storage unit, a trunk monitoring unit that monitors a hold status of a trunk at a predetermined cycle, and detects a trunk that has been held for a predetermined time or longer, the mobile telephone exchange, and the database. A signal transmitting / receiving unit for transmitting and receiving information between the two, and a mobile subscriber number of the call holding the trunk detected by the trunk monitoring unit is extracted, and the subscriber information of the subscriber number is transmitted to the signal transmitting / receiving unit. Means for obtaining from the database via the, and the determination means for determining whether the hold trunk is invalid hold from the subscriber information, invalid And determining the fraction has a means for activating the hold release of the trunk.

[0008]

[Function] The trunk is constantly monitored at a constant cycle to detect a long-holding trunk that exceeds a predetermined time, the subscriber number holding the trunk is detected, and the communication status of the subscriber is acquired from the database. To determine whether it is invalid hold,
When the trunk is determined to be invalid hold, the trunk is restored, so that the invalid hold of the trunk can be automatically detected and restored.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of an invalid hold trunk restoration device for a mobile telephone exchange according to the present invention, and FIG. 2 is a flow chart of a judgment sequence of the central control unit 25 shown in FIG.

The mobile telephone exchange 2 connects a trunk 21 corresponding to a radio channel, a trunk monitor 23 that monitors a hold status of the trunk at a constant interval and detects a trunk that is on hold for a predetermined time, and a call connection of the trunk. A signal transmitting / receiving unit 26 for transmitting / receiving various information between a storage unit 24 for storing information and a database 3 for storing subscriber information of mobile subscribers via a signal network, and a subscription from the database 3 A central control unit 25 that controls all the control such as determining whether the call is invalidly held based on the person information, and if the invalid hold is performed, the trunk control unit 28 restores the trunk, and the like.
A report unit 27 for reporting to the maintenance person after the invalid hold trunk is restored is included.

It is now assumed that the trunk is put on hold after the call from the mobile subscriber 1 to the ordinary telephone is completed. When a call is made from the mobile subscriber 1 to an ordinary telephone, the connection information of the call is stored in the storage unit 24 corresponding to the trunk 21. This connection information includes the subscriber number a of the mobile subscriber 1 who made the call. If the trunk 21 is terminated while being held for some reason such as the disappearance of a wireless disconnection signal, the trunk 21 is held for a long time.
The trunk monitoring unit 23 detects a trunk that is continuously on hold for a fixed time (for example, 24 minutes) at a fixed interval (for example, 3 minutes), and notifies the central control unit 25 of the detected trunk. The central control unit 25 retrieves the subscriber number a from the connection information of the call of the trunk 21 stored in the storage unit 24. The subscriber number a of the mobile subscriber 1 is transmitted to the database 3 in which the subscriber information of the mobile subscriber 1 is stored by using the signal transmitting / receiving unit 26, and the subscriber information (whether the subscriber is in a calling state or not) is transmitted. Request empty blockage information (empty: non-call, block: call) and location information). The database 3 returns the subscriber information corresponding to the subscriber number a. The mobile telephone exchange 2 determines whether or not the trunk 21 is invalid based on the subscriber information received by the central control unit 25 according to the flowchart shown in FIG.

Based on the received subscriber information, it is determined whether or not the subscriber is occupied (step 31). If the subscriber is idle, the subscriber 1 is not talking, so the recovery process is executed for the trunk 21 (step 36). When the subscriber 1 is blocked, the own station location information table 101 is searched by the reception location information (step 32), and it is determined whether or not the location information is within the control of the own mobile telephone switchboard 2 (step 33). If there is no matching position information in the own station position information table 101, the mobile subscriber 1 determines that the call is in the control of the other mobile telephone exchange, and the trunk 21 is restored (step 36). If there is coincident position information, the position information to which the trunk 21 is connected is retrieved from the trunk-position information conversion table 102 (step 34). The reception position information is compared with the information on the position to which the trunk is connected (step 35). If they do not match, it is determined that the mobile subscriber 1 is talking on the other side of his / her own mobile telephone switchboard 2. Judge the trunk 2
The recovery process 1 is performed (step 36). After the trunk 21 is restored, the notification section 27 notifies the maintenance person of the restoration (step 37). Other than the above, restoration processing is not performed because the mobile subscriber is judged to be busy.

[0014]

As described above, according to the present invention, since an invalid hold trunk is automatically determined and a recovery process is performed, the work of a maintenance person is reduced, and an invalid trunk is recovered in real time, so that the trunk is effective. It has the effect of improving utilization.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an invalid hold trunk restoration device for a mobile telephone exchange according to the present invention.

FIG. 2 is a flowchart of a determination sequence of a central control unit 25 shown in FIG.

[Explanation of symbols]

 1 Mobile Subscriber 2 Mobile Telephone Switch 21 Trunk 23 Trunk Monitoring Unit 24 Storage Unit 25 Central Control Unit 26 Signal Transmitter / Receiver Unit 27 Notification Unit 28 Trunk Control Unit 101 Own Position Information Table 102 Trunk-Position Information Conversion Table

Claims (3)

[Claims] 1. A method for recovering an invalid hold trunk of a mobile telephone exchange in a mobile telephone system having a mobile telephone exchange and a database for storing mobile subscriber information, comprising monitoring a hold state of a trunk in advance. A trunk that is over-held for more than a predetermined time is extracted, a subscriber number of the trunk that is over-held is detected, and subscriber information of the subscriber terminal is extracted from a database to determine whether the trunk is invalidly held. If it is judged to be invalid hold, the method for recovering the invalid hold trunk of the mobile telephone exchange which releases the hold of the trunk. 2. The method for recovering an invalid hold trunk of a mobile telephone exchange according to claim 1, wherein the detection of the excess hold trunk is carried out by monitoring every predetermined period. 3. An invalid hold trunk restoration device for a mobile telephone exchange in a mobile telephone system having a mobile telephone exchange and a database for storing mobile subscriber information, the storage unit being predetermined. A trunk monitoring unit that monitors the hold status of the trunk at regular intervals and detects a trunk that has been held for a predetermined time or longer; a signal transmission / reception unit that transmits and receives information between the mobile telephone exchange and the database; Means for extracting the mobile subscriber number of the call holding the trunk detected by the monitoring unit and acquiring the subscriber information of the subscriber number from the database via the signal transmitting / receiving unit; Determining means for determining whether the hold trunk is invalid hold based on the information; and a means for activating the hold release of the trunk when it is determined as invalid hold. Invalid hold trunk recovery device for a mobile telephone exchange having steps.