JP2570173B2 - Method and apparatus for restoring invalid hold trunk of mobile telephone exchange - Google Patents

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 an apparatus for restoring an invalid hold trunk of a mobile telephone exchange.

[0002]

2. Description of the Related Art Conventionally, a mobile telephone exchange often has a state in which a trunk is invalidated due to the disappearance of a radio disconnection signal or a failure in a device of the mobile telephone exchange, even after a call is terminated. The mobile telephone exchange has detected a trunk on hold for a long time by the trunk monitoring unit, but there is no effective means for judging whether or not the hold is invalid, and the detection result is merely reported to the maintenance person. The determination of whether the suspension is invalid or not is left to the maintenance person, and the maintenance person who has received the report examines the trunk in detail, and if the suspension is invalid, performs the recovery work.

[0003]

All of the above-mentioned conventional methods of restoring an invalid hold trunk of a mobile switching center are processed by a maintenance person, and a load is imposed on maintenance work. Therefore, even if an invalid hold trunk is found and notified to the maintenance person, the recovery work is in the maintenance work time zone, and the recovery is delayed and the trunk is not effectively used.

[0004] It is an object of the present invention to provide a method and an apparatus for recovering an invalid hold trunk of a mobile exchange, which automatically detects and recovers an invalid hold trunk.

[0005]

According to the present invention, there is provided a method for restoring an invalid hold trunk in a mobile telephone exchange, comprising: a mobile telephone exchange in a mobile telephone system having a database for storing mobile subscriber information; Invalid trunk recovery method, monitoring the trunk hold state, detecting a trunk that has been over-held for a predetermined time, detecting the subscriber number of the excess-held trunk, The subscriber information of the client terminal is extracted from the database, and it is determined whether or not the trunk is in invalid hold. If it is determined that the trunk is in invalid hold, the trunk is released from hold.

[0006] In addition, the detection of the excess suspension trunk includes monitoring by monitoring at predetermined intervals.

Further, the present invention provides an apparatus for restoring an invalid hold trunk of a mobile exchange, which comprises a mobile telephone exchange and a database for storing mobile subscriber information. An apparatus, a storage unit, a trunk monitoring unit that monitors a trunk holding state at a predetermined cycle, and detects a trunk that has been on hold for a predetermined time or more, the mobile telephone exchange, and the database. A signal transmitting / receiving unit for transmitting / receiving information between the mobile terminal and a mobile subscriber number of a call holding a trunk detected by the trunk monitoring unit, and transmitting the subscriber information of the subscriber number to the signal transmitting / receiving unit Means for obtaining from the database via the subscriber information, determining means for determining whether the hold trunk is disabled hold from the subscriber information, And determining the fraction has a means for activating the hold release of the trunk.

[0008]

The trunk is constantly monitored at regular intervals to detect a long-hold trunk longer than a predetermined time, the number of the subscriber holding the trunk is detected, and the communication status of the subscriber is acquired from a database. To determine whether it is an invalid hold,
If it is determined that the trunk is invalidated, the trunk is restored, so that the invalidation suspension of the trunk can be automatically detected and restored.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the apparatus for restoring an invalid hold trunk of a mobile telephone exchange according to the present invention, and FIG. 2 is a flowchart of a determination sequence of the central control unit 25 shown in FIG.

The mobile telephone exchange 2 is connected to a trunk 21 corresponding to a radio channel, a trunk monitoring unit 23 for monitoring the holding status of the trunk at regular intervals and detecting a trunk in a holding status for a fixed time, and connecting the trunk call. A signal transmitting / receiving unit 26 for transmitting and receiving various information between a storage unit 24 for storing information, 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 controls such as restoring the trunk using the trunk control unit 28 if the suspension is invalid based on the user information.
A report unit 27 that reports to the maintenance person after restoring the invalid hold trunk.

[0012] Now, it is assumed that a trunk is placed in an invalid hold after a call from a mobile subscriber 1 to a general telephone is terminated. When a call is made from the mobile subscriber 1 to a general telephone, the call connection information 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 with the trunk 21 suspended for some reason, such as the disappearance of a radio disconnection signal, the trunk 21 is put on hold for a long time.
The trunk monitoring unit 23 detects a trunk that has been on hold for a predetermined time (for example, 24 hours) continuously at a predetermined interval (for example, 3 minutes), and notifies the central control unit 25 of it. The central control unit 25 extracts the subscriber number a in the call connection information 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 call state or not). It requests the free / busy information (empty: no call, busy: call) and location information indicating whether or not. The database 3 returns the subscriber information corresponding to the subscriber number a. The mobile telephone exchange 2 determines whether the trunk 21 is invalid using 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 the subscriber is full (step 31). If it is vacant, since the subscriber 1 is not talking, a recovery process is executed for the trunk 21 (step 36). When the subscriber 1 is blocked, the local station position information table 101 is searched with the received position information (step 32), and it is determined whether or not the position information is within the local area of the mobile telephone exchange 2 (step 33). If there is no matching location information in the local station location information table 101, the mobile subscriber 1 determines that the telephone is talking within the other mobile telephone exchange, and performs a recovery process of the trunk 21 (step 36). If there is matching position information, the position information to which the trunk 21 is connected is extracted from the trunk-position information conversion table 102 (step 34). The received location information is compared with the information of the location where the trunk is connected (step 35). If the information does not match, the mobile subscriber 1 is assumed to be talking in another area of the own mobile telephone exchange 2 pipe. Judgment trunk 2
1 is performed (step 36). After the trunk 21 has been restored, the reporter 27 notifies the maintenance person of the restoration (step 37). Other than the above, the mobile subscriber determines that the telephone is busy and does not perform the recovery processing.

[0014]

As described above, according to the present invention, the invalid trunks are automatically determined and the recovery processing is performed, so that the work of the maintenance person is reduced. It has the effect of improving utilization.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of an invalid hold trunk recovery 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]

 DESCRIPTION OF SYMBOLS 1 Mobile subscriber 2 Mobile telephone exchange 21 Trunk 23 Trunk monitoring unit 24 Storage unit 25 Central control unit 26 Signal transmission / reception unit 27 Reporting unit 28 Trunk control unit 101 Own station position information table 102 Trunk-position information conversion table

Claims (3)

(57) [Claims] 1. A method for restoring 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: Extracting trunks that have been over-pended for more than a predetermined time, detecting the subscriber number of the over-pending trunks, extracting subscriber information of the subscriber terminal from a database, and determining whether or not the trunks are invalid pending A method of restoring an invalid hold trunk of a mobile telephone exchange, which releases the hold of the trunk when it is determined that the hold is invalid. 2. The method according to claim 1, wherein the detection of the excess reserved trunk is performed by monitoring at predetermined intervals. 3. An invalid hold trunk recovery device for a mobile telephone exchange in a mobile telephone system having a mobile telephone exchange and a database for storing mobile subscriber information, wherein the storage unit is predetermined. A trunk monitoring unit that monitors a trunk holding state periodically and detects a trunk that has been on hold for a predetermined time or more; a signal transmitting / receiving unit that sends and receives information between the mobile telephone exchange and the database; Means for extracting a mobile subscriber number of a call holding a trunk detected by a monitoring unit, and acquiring subscriber information of the subscriber number from the database via the signal transmitting / receiving unit; Determining means for determining whether or not the hold trunk is invalid hold based on information; and means for activating release of hold of the trunk when determining that the hold is invalid hold. An invalid hold trunk recovery device for a mobile telephone exchange having steps.