JP3564514B2 - Distributed invisibility method - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a case where a switch accesses a service control node having a corresponding service processing function from a plurality of network-wide (exceeding a plurality of switches) service control nodes which are distributed and arranged. The present invention relates to a distributed invisible method that can be performed without being aware of the distributed configuration of service control nodes.
[0002]
[Prior art]
In a network in which a plurality of subscriber terminals, a plurality of exchanges, and nodes for performing various service controls are distributed, when a call is transmitted from a certain subscriber terminal, a processing function of a corresponding service is performed based on information from the subscriber. In order to access a service control node of a network having the same, it is necessary to refer to directory information that associates the service control node. Conventionally, there are two methods for identifying a network-wide service control node, one of which refers to directory information in an exchange, performs service analysis in the exchange, and accesses the service control node. The other method is to store directory information in the existing common channel signal processing node, and the exchange requests service analysis from the common channel signal processing node, receives the analysis information, and sends the analysis information to the corresponding service control node. How to access.
[0003]
[Problems to be solved by the invention]
However, in the method of (i) storing directory information in an exchange and referring to the directory information to analyze the service, each time a service is newly added or each time a service control node is added, each of these exchanges is changed. Since it is necessary to change and add the directory information, the operation becomes complicated.
(Ii) In the method of holding directory information in the common line signal processing node and analyzing the service in this node, when a new service is added or a service control node is added, the common information is used. Only the directory information of the line signal processing node needs to be changed or added, but only the domestic telephone number is used as the directory information in the common line signal processing node, and only services that can be determined by the domestic telephone number can be identified. It is not possible to identify the service in any other way.
SUMMARY OF THE INVENTION An object of the present invention is to solve these conventional problems and, when data such as network configuration conditions are changed in accordance with the addition or change of a service, the location to be changed or added can be localized. Another object of the present invention is to provide a distributed invisible method that is very effective for maintenance because it is easy to identify service functions that cannot be determined only by telephone numbers.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, a distributed invisible method of the present invention is characterized in that the following functions are arranged in a network. That is, i) directory information for identifying service control nodes distributed and arranged over a network wide is arranged on the service control node side. ii) The exchange has a function of accessing a predetermined upper-level service control node uniquely regardless of the service. Note that a plurality of predetermined higher-level service control nodes are possible.
In other words, according to the present invention, in the service processing in the network, the switch controls the access to the service control node having the corresponding service processing function among the network-wide service control nodes that are distributed and arranged. It can be performed without being aware of the distributed configuration of nodes.
[0005]
[Action]
In the present invention, when the exchange accesses a predetermined upper service control node, the exchange refers to directory information corresponding to various service control nodes on the upper service control node side, analyzes the directory information, and sends the directory information to the corresponding service control node. Since the service request is made to the customer, the maintenance is very effective.
As a result, the physical location information of the service control node corresponding to the service function is distributed and invisible from the exchange, and even when a service function is added or the service control node is added, the station data of the exchange cannot be changed. Since it becomes unnecessary, maintainability is improved. Further, since the service analysis processing can be localized at the service control node, it is possible to easily identify a service function that cannot be determined only by a telephone number.
[0006]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram of a network system showing one embodiment of the present invention.
In FIG. 1, a network system according to the present embodiment includes a caller terminal 102 for a caller 101 to set his / her own service request, a callee terminal 104 for a callee 103 to set his / her own service request, and a communication service. Is performed by the network 105 for executing the program.
In the network 105, the originating exchange of the plurality of exchanges is represented by the originating exchange 108, and the destination exchange is represented by the destination exchange 109. In this case, only the software processing unit of each function of the exchanges is provided. Is concerned. Further, a plurality of service control nodes are represented by two types of network-wide service control nodes A and network-wide service control nodes B.
Therefore, the network 105 can be simply described as an originating exchange 108 for performing signal processing and call connection processing for the calling terminal 102, a destination exchange 109 for performing signal processing and call connection processing for the called terminal 103, and an originating exchange. It comprises a network-wide service control node A 106 and a network-wide service control node B 107 for controlling the destination switch 108 and the destination exchange 109 in a network-wide manner.
[0007]
FIG. 2 is a block diagram of the network wide service control node A in FIG.
In FIG. 2, the network-wide service control node A distributes the communication control function 201 between the originating exchange 108 and the destination exchange 109, which controls the communication between the destination exchange 108 and the network-wide service control node A or the network-wide service control node B 107. , The service execution control function 203, the service logic program a204, the directory information 205 for associating the service logic program with the physical location of the network-wide service control node, and the network-wide service control node B107. It comprises a communication control function 206 for controlling communication. As described above, the network-wide service control nodes A and B holding various different service logic programs are connected to each other via the communication control function 206, and services not present in themselves can request execution from each other.
[0008]
FIG. 3 is a block diagram of the network wide service control node B in FIG.
In FIG. 3, the network-wide service control node B 107 is allocated to the communication control function 201 for the originating / exiting exchange that controls the communication between the originating exchange 108 and the destination exchange 109, and to the network-wide service control node A or the network-wide service control node B 107. Distribution function 202, service execution control function 203, service logic program b301, directory information 205 for associating the service logic program with the physical location of the network wide service control node, and communication control for controlling communication with the network wide service control node A106. It comprises a function 206.
As described above, in each of the network wide service control nodes A 106 and B 107, the directory information 205 for associating the service logic program with the physical location of the network wide service control node is arranged. The service is analyzed by referring to the directory information in the wide service control node.
[0009]
FIG. 4 is a block diagram of the originating exchange in FIG.
In FIG. 4, an originating exchange 108 has a basic call processing function 401 for controlling a dialogue (interaction) with the caller terminal 102, an access availability analysis function 402 for a network-wide service control node A, and a communication control with the network-wide service control node. It comprises a function 403 and a function 404 for receiving a service instruction from a network-wide service control node.
Here, the caller 101 accesses a predetermined network-wide service control node A from the caller terminal 102 via the originating exchange 108, and analyzes the corresponding service based on the directory information in the network-wide service control node A. Is done. If there is no service logic program to be executed in its own control unit, the network-wide service control node A requests the network-wide service control node containing the program to execute a service request.
[0010]
FIG. 5 is a block diagram of the destination exchange in FIG.
In FIG. 5, the destination exchange 109 has a basic call processing function 401 for controlling a dialogue (interaction) with the called terminal 104, an access availability analysis function 501 for analyzing whether access to the network-wide service control node B 107 is available, and a network-wide service control. It comprises a communication control function 403 with the node and a service instruction reception function 404 from the network wide service control node.
The communication control function 403 with the network-wide service control node accesses the predetermined network-wide service control node B107, but the corresponding service logic program does not exist in the network-wide service control node B107. If it exists in A106, a service instruction is sent from the network wide service control node A106, and the communication control function 403 receives it.
[0011]
FIG. 6 is a diagram showing a format configuration of directory information according to an embodiment of the present invention.
In FIG. 6, the directory information includes service logic program (SLP) selection information describing service processing, an SLP identifier specified thereby, and an address indicating the physical location of the network-wide service control unit. .
[0012]
Next, based on the instruction of the caller, the network activates the service logic program b301 from the originating exchange to perform processing, and based on the instruction of the called party, the network activates the service logic program b301 from the destination exchange. The operation of the present invention will be described with reference to FIGS.
(I) When the network activates and processes the service logic program b from the originating exchange based on the caller's instruction (FIGS. 7 and 8)
Step 10: The caller 101 gives an instruction to the network 105 via the caller terminal 102 in order to receive the service desired by the user (the service specification is described in the service logic program b301), and A transition is made to a state in which the service logic program b301 in the service control node B107 is activated (10a). In the network 105, the basic call processing unit 401 of the originating exchange 108 receives this signal, and activates the function 402 for analyzing whether access to the upper network wide service control node A is possible (10b). The function 402 for analyzing whether access to the network wide service control node A determines whether access is possible or not and, if necessary, activates the network wide service control node A 106 via the communication control function 403 with the network wide service control node (10c). (10d).
[0013]
Step 11: The network-wide service control node A 106 activates the network-wide service control node distribution function 202 via the communication control function 201 with the incoming / outgoing exchange (11a, 11b). The network-wide service control node distribution function 202 analyzes the directory information 205 that associates the service logic program with the physical location of the network-wide service control node from the information for activating the service logic program b301. Then, the communication control function 206 with the network-wide service control node is activated to request the network-wide service control node B 107 for control (11c).
[0014]
Step 12: In the network wide service control node B 107, the communication control function 206 with the network wide service control node receives this signal and activates the network wide service control node distribution function 202 (12a). The network-wide service control node distribution function 202 analyzes the directory information 205 that associates the service logic program with the physical location of the network-wide service control node, recognizes that the service logic program b301 exists in its own node, and performs service execution control. The function 203 is activated (12b). The service execution control function 203 sets conditions for activating the service logic program b301 and activates the service logic program b301 (12c).
[0015]
Step 13: During the execution of the service logic program b301, when a transition is made to a state in which an instruction is given to the originating exchange 108, the service execution control function 203 is activated (13a). The service execution control function 203 activates the originating exchange 108 via the communication control function 201 with the originating and terminating exchange, and requests an instruction (13b).
Step 14: The originating exchange 108 activates the service control instruction receiving function 404 from the network wide service control node B 107 via the communication control function 403 with the network wide service control node (14a). In the service control instruction receiving function 404 from the network wide service control node, the basic call processing function 401 is activated to execute necessary call connection processing, and the service is executed (14b).
[0016]
(Ii) When the network activates and processes the service logic program b from the destination exchange based on the instruction of the called party (FIGS. 9 and 10),
Step 20: The called party 103 gives an instruction to the network 105 via the called party terminal 104 to receive the service desired by the user (the service specification is described in the service logic program b301). A transition is made to a state in which the service logic program b301 in the wide service control node B107 is activated (20a). In the network 105, the basic call processing unit 401 of the destination exchange 109 receives this signal, and activates the function 501 for analyzing whether access to the network wide service control node B on its own is possible (20b). The function 501 for analyzing whether or not access to the network-wide service control node B determines whether or not access is possible, and if necessary, requests control to the network-wide service control node B 107 via the communication control function 403 with the network-wide service control node ( 20c). Activate the network wide service control node B 107 (20d).
[0017]
Step 21: In the network wide service control node B 107, this signal is received by the communication control function 201 with the originating and terminating exchange (21a), and the network wide service control node distribution function 202 is activated via the communication control function 201 (step 21). 21b). The network-wide service control node distribution function 202 analyzes the directory information 205 that associates the service logic program with the physical location of the network-wide service control node from the information for starting the service logic program b301. , And activates the service execution control function 203 (21c). The service execution control function 203 sets conditions for activating the service logic program b301, and activates the service logic program b301 (21d).
[0018]
Step 22: During the execution of the service logic program b301, when a transition is made to a state in which an instruction is given to the destination exchange 109, the service execution control function 203 is activated (22a). The service execution control function 203 activates the destination exchange 109 via the communication control function 201 with the incoming / outgoing exchange, and requests an instruction (22b).
Step 23: The destination side exchange 109 activates the service control instruction receiving function 404 from the network wide service control node via the communication control function 403 with the network wide service control node (23a). In the service control instruction receiving function 404 from the network wide service control node, the basic call processing function 401 is activated to perform necessary call connection processing, and the service is executed (23b).
[0019]
【The invention's effect】
As described above, according to the present invention, instead of changing the station data of thousands of exchanges, it is only necessary to change the data of about tens of network-wide service control nodes. It is possible to localize data changes such as network configuration conditions due to the addition of a service for performing the service, which is very effective for maintenance. Further, since the analysis function corresponding to the addition of the new service can be performed on the network-wide service control node side, the change node can be localized for the addition of the service.
[Brief description of the drawings]
FIG. 1 is a block diagram of a service network system according to an embodiment of the present invention.
FIG. 2 is a block diagram of a network wide service control node A in FIG. 1;
FIG. 3 is a block diagram of a network wide service control node B in FIG. 1;
FIG. 4 is a block diagram of an originating exchange in FIG. 1;
FIG. 5 is a block diagram of a destination exchange in FIG. 1;
FIG. 6 is a diagram illustrating a format configuration of directory information in FIG. 1;
FIG. 7 is an operation flowchart showing one embodiment of the present invention, showing a series of operations for starting and processing the service logic program b from the originating exchange.
FIG. 8 is a flowchart of a continuation operation of FIG. 7;
FIG. 9 is an operation flowchart showing one embodiment of the present invention, showing a series of operations for starting and processing the service logic program b from the destination exchange.
FIG. 10 is a flowchart of a continuation operation of FIG. 9;
[Explanation of symbols]
105: network, 101: sender, 102: sender terminal,
103: called party, 104: called party terminal, 108: originating exchange,
109: destination exchange, 106: network wide service control node A,
107 ... Network wide service control node B
203: service execution control function, 204: service logic program a,
301: service logic program b,
202: Network wide service control node distribution function,
201: communication control function with the incoming / outgoing exchange,
206: communication control function with the network wide service control node,
205: directory information, 401: basic call processing function,
402: Function for analyzing whether access to the network wide service control node A is possible,
404 a function for receiving a service instruction from a network-wide service control node;
403: communication control function with the network wide service control node,
501: Function for analyzing whether access to the network wide service control node B is possible.

Claims (1)

In a distributed invisibility method for an intelligent network including a plurality of switches and a plurality of service control nodes controlling the switches,
The service control node stores a service execution program requested by the exchange and a physical location of a service control node accommodating the service execution program in association with each other, and each time a service is newly added, or Each time is added, directory information whose storage contents are changed or added , and means for distributing a service request from the exchange to the service control node of the execution destination based on the directory information,
Upon receiving the service request from the caller, the exchange accesses one or more predetermined service control nodes without depending on the type of service,
Upon receiving a service request from the exchange, the service control node analyzes the directory information via the distribution unit ,
As a result of the analysis, if there is a service execution program to be executed in the own node, the service execution program is executed. If there is no service execution program to be executed in the own node, another service control node accommodating the service execution program. A request for execution of the service request to the distributed invisible method.

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