JPH0965385A - Congestion control processing method and system for service control node in intelligent network - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively resolve the congestion of a service control node without the call loss in an electronic exchange due to congestion control in the case than the service control node is congested by a specific number in an intelligent network(IN). SOLUTION: In the IN consisting of an electronic exchange 1, a communication link 3, and a service control node 2, the service control node 2 detects congestion to report the congestion information to the electronic exchange 1 through the communication link 3. This congestion information has the number of a congestion cause, routing information, and the control duration as main parameters. The electronic exchange 1 receives congestion information and records it in a congestion information register memory 14 of the electronic exchange 1. Each time when a call to the service control node 2 occurs, the electronic exchange 1 refers to the congestion information register memory 14 to check whether the call is the control object or not; and if it is a control object, the call is alternatively connected to a designated terminating destination. When the designated control duration elapses, congestion information is deleted from the congestion information register memory 14, and the control is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intelligent network (IN) which is composed of an electronic exchange and a service control node which is connected to the electronic exchange through a communication link and controls services of a telephone network. Congestion control processing of a control node.

[0002]

2. Description of the Related Art There is no prior art which describes congestion control of a service control node which performs service control of a telephone network. Conventionally, as a method of congestion control in a service control node in IN, a network operator monitors traffic of each service control node or a usage rate of a CPU of the service control node, and a certain service control node is congested. In such a case, a method of manually connecting an announcement or tone indicating congestion to a calling subscriber and restricting a call to be accessed is generally performed.

[0003]

When a conventional congestion control method of simply connecting an announcement or tone to an originating subscriber is applied to the congestion control of a service control node in IN, it is manually controlled. All calls have the problem of blocking calls.

Further, when detecting congestion of a certain service control node and restricting access to the service control node, the restriction is manually performed by a command from an IN maintenance terminal or the like. There is a problem that congestion of the node may not be able to be controlled in a timely manner.

SUMMARY OF THE INVENTION An object of the present invention is to provide a congestion control that effectively eliminates congestion caused by a specific number of a service control node without causing a call to be lost by regulation.
The present invention provides a method and a method for processing congestion control of a service control node in N.

[0006]

A congestion control processing method for a service control node in an IN according to the present invention includes an electronic exchange and a service control node which is connected to the electronic exchange via a communication link and performs service control of a telephone network. In a congestion control processing method for a service control node in an intelligent network, which is abbreviated as IN, the congestion of the service control node is detected, the number causing the congestion is specified, and the regulation target number, routing information, and regulation continuation are provided. A step of sending a regulation request message having time as a main parameter to the electronic exchange, receiving a regulation request message from a service control node, recording information on the regulation request message in a regulation condition registration memory,
Further, when the regulation continuation time has elapsed, the regulation request message is deleted, the step of processing the congestion control of the electronic exchange that releases the regulation, and each time a call to access the service control node occurs, By referring to the regulation condition registration memory, it is determined whether or not the number is a regulated number. If it is regulated, the call is replaced to the designated destination according to the routing information in the regulation condition registration memory. The method includes a step of connecting and a step of processing a call connection control of an electronic exchange that permits access to a service control node if it is not subject to regulation, and a step of performing a substitute operation of the exchange when the IN service control node is congested.

Further, the congestion control processing method of the service control node in IN of the present invention is an IN which is composed of an electronic exchange and a service control node which is connected to this electronic exchange through a communication link and performs service control of the telephone network. In the congestion control processing method of the service control node in
Means for detecting congestion of the service control node, identifying the number causing the congestion, and sending a regulation request message having the regulation target number, routing information, and regulation duration as the main parameters to the electronic exchange. And receiving the regulation request message from the service control node, recording the regulation request message information in the regulation condition registration memory, and deleting the regulation request message and releasing the regulation when the regulation duration time elapses. A means for processing congestion control of the electronic exchange, and each time a call to access the service control node occurs, the regulation condition registration memory of the electronic exchange is referred to and whether the number is a regulated number or not. If the call is judged to be restricted, and if it is subject to restriction, a procedure for substituting and connecting the call to the specified destination according to the routing information in the restriction condition registration memory. When, if not regulated, and means for exchange substituting process of IN service control point congestion time and means for processing the call connection control of the electronic switch that allows access to the service control node.

[0008]

As described above, when the electronic exchange regulates a regulated call in accordance with a regulation request message from a service control node, the electronic exchange simply sends an announcement or tone indicating congestion to the regulated call. Instead of prompting the end of the call, the restricted call can be connected to the destination specified by the restriction request message. Congestion can be effectively eliminated.

[0009]

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

FIG. 1 is a block diagram of an IN according to an embodiment of the present invention.
2 and 3 are flowcharts showing the operation of the embodiment of the present invention.

The IN of this embodiment comprises an electronic exchange 1 and a service control node 2 connected to the electronic exchange 1 via a communication link 3. The electronic exchange 1 includes an input / output control unit 11 for communicating with the service control node 2, a call connection control unit 12 for performing call connection processing, and a recording condition for restricting calls for accessing the service control node 2. The congestion control unit 13 has a regulation condition registration memory 14 and manages it. The service control node 2 includes an input / output control unit 21 for communicating with the electronic exchange 1 and a congestion control unit 22 for controlling congestion of the service control node 2.

Next, the operation of the embodiment constructed as described above will be described with reference to FIGS.

FIG. 2 is a flowchart showing the activation / release of the congestion control regulation. FIG. 3 is a flowchart showing a call restriction process of the electronic exchange.

When the service control node 2 detects congestion, it specifies the number that caused the congestion (S-
1).

The service control node 2 sends a restriction request message via the communication link 3 to request the electronic exchange 1 to restrict access to the service control node 2 by the number (S-2). The main parameters of the restriction request message are a restriction target number (a number that caused congestion), routing information (a destination of the number), and a restriction duration time.

When receiving the restriction request message, the input / output control unit 11 in the electronic exchange 1 requests the congestion control unit 13 to record the information of the received message in the restriction condition registration memory 14 (S-3). ), The congestion control unit 13
The information of the received message is registered in the regulation condition registration memory 14 (S-4).

When the regulation is activated by S-4, the call connection control unit 12 in the electronic exchange 1
Each time a call to access is made, it refers to the regulation condition registration memory 14 in the congestion control unit 13 to determine whether or not the number is a regulation target number (S-5).

If the number is a regulated number, the call connection control section 12 in the electronic exchange 1 substitutes the call to the designated destination according to the routing information in the regulation condition registration memory 14 (S-6). .

If the number is not a restricted number, access to the service control node 2 is permitted without restriction (S-
7).

When the regulation continuation time specified in the regulation condition registration memory 14 elapses, the congestion control unit 13 deletes the regulation information in the regulation condition registration memory 14 and releases the regulation (S-8).

[0021]

According to the present invention, when the service control node is congested by a specific number, the electronic exchange connects the regulated call to the alternate destination specified based on the congestion information received from the service control node. By doing so, it is possible to effectively eliminate the congestion of the service control node without losing the call due to regulation.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a present embodiment.

FIG. 2 is a flowchart illustrating activation / cancellation of regulation according to the embodiment.

FIG. 3 is a flowchart illustrating a call restriction process of the electronic exchange according to the embodiment;

[Description of Signs] 1 service control node 2 electronic exchange 11 input / output control unit 12 call connection control unit 13 congestion control unit 14 regulation condition registration memory 21 input / output control unit 22 congestion control unit

Claims (2)

[Claims] 1. A congestion control processing method for a service control node in an intelligent network, which is abbreviated as IN, comprising an electronic exchange and a service control node connected to the electronic exchange via a communication link for performing service control of a telephone network. Detecting the congestion of the service control node, identifying the number that causes the congestion, sending a regulation request message with the regulation target number, routing information, and regulation duration as the main parameters to the electronic exchange. And receives the regulation request message from the service control node, records the regulation request message information in the regulation condition registration memory, and deletes the regulation request message and releases the regulation when the regulation duration time elapses. The steps to handle congestion control of the electronic exchange and the service control node Each time an attempted call occurs, refer to the regulation condition registration memory of the electronic exchange,
It is determined whether or not the number is a regulated number, and if the number is regulated, the step of substituting and connecting the call to the designated destination according to the routing information in the regulation condition registration memory, and if the number is not regulated For example, the step of processing call connection control of an electronic exchange that permits access to the service control node, and the step of performing switch substitution processing when the IN service control node is congested, congestion of the service control node at the IN. Control processing method. 2. A congestion control processing method of a service control node in an IN, which comprises an electronic exchange and a service control node connected to the electronic exchange via a communication link for performing service control of a telephone network. Detecting congestion, identifying the number that causes the congestion, sending a regulation request message to the electronic exchange, the regulation target number, routing information, and regulation duration being the main parameters, and service control When a regulation request message from a node is received, the regulation request message information is recorded in the regulation condition registration memory, and when the regulation duration time elapses, the regulation request message is deleted to release the regulation. A means of processing control and an electronic exchange each time a call to access the service control node occurs. Referring to the regulatory condition registration memory of the exchange,
If the number is a regulated number, and if it is regulated, a means for substituting and connecting the call to a designated destination according to the routing information in the regulation condition registration memory, and if the number is not regulated, For example, the congestion of the service control node in the IN has the means for processing the call connection control of the electronic exchange that permits access to the service control node, and the means for performing the substitute processing when the IN service control node is congested. Control processing method.