KR100459934B1 - Method and system for providing annexed service and intelligent network service in pstn - Google Patents

Abstract

The present invention is to provide a method and system for providing additional services and intelligent network services in a public switched telephone network that can provide more various services to more subscribers in a public switched telephone network (PSTN).

As a construction means for achieving the above object, the present invention stores additional information and intelligent network service related information and trigger data in an external database connected to the exchange in a public switched telephone network, and the exchange is a subscriber in the database during outgoing call processing By requesting the service information and the trigger data of the, the technical gist to provide a service according to the received additional service information and intelligent network trigger information received during the call processing.

By the above-described configuration, the present invention has the effect that the PSTN subscriber can freely subscribe to the intelligent network service based on the additional service and the personal number regardless of the capacity, and not only the trigger mechanism based on the service access code. By providing a trigger mechanism based on the personal number, it is possible to provide a variety of intelligent network services.

Description

METHOD AND SYSTEM FOR PROVIDING ANNEXED SERVICE AND INTELLIGENT NETWORK SERVICE IN PSTN}

The present invention relates to a method and system for providing additional services and intelligent network services in a public switched telephone network that can provide more diverse services to more subscribers in a public switched telephone network (PSTN).

Public Switched Telephone Network (hereinafter referred to as PSTN) means a set of voice-driven circuit-switched exchangers connected worldwide.

In the early PSTN, only the voice delivery service was provided, but as the technology gradually developed, various additional services besides voice delivery, in addition to customized services and direct control of subscribers, could meet the high demand level of communication users. It also provides intelligent network services.

The supplementary service provision stores the supplementary service information of the subscriber in a database provided inside the switchboard that manages the line of the wired telephone subscriber, and when the call originated from or received by the subscriber arrives, the stored supplementary service information is stored. This is done by searching and providing the service.

In the existing supplementary service providing method, the size of the service related data of the subscriber to be maintained at the exchange increases in proportion to the number of subscribers managed at the exchange. Therefore, if the service-related data of the subscriber to be maintained in the exchange becomes too large, it may degrade the basic performance of the exchange itself, and therefore, there is a problem that the additional services currently provided has a limit of the number of subscribers per service. .

In addition, the intelligent network service is a structure that provides only the trigger mechanism based on the service access code (for example, 080, 1588, 1544, etc.) provided by the network, which is limited by the size of the trigger table inside the exchange. Therefore, in this case, there is a problem that it is difficult to provide a call origin trigger mechanism based on the number of individuals.

The present invention has been proposed to solve the above-mentioned problems, and is added in a public switched telephone network that can provide more various services to more subscribers by overcoming the limitation of service data storage capacity without degrading the performance of the PSTN electronic exchange. The purpose is to provide a service and intelligent network service providing method and system.

1 is a structural diagram of an additional service and intelligent network service providing system in a public telephone network to which the present invention is applied.

2 is a call processing structure diagram of an exchange in a service providing system according to the present invention.

3 is an example of providing an additional service according to the present invention, and is a signal processing diagram showing a procedure of providing a call forwarding additional service.

4 is an example of providing an intelligent network service according to the present invention, and is a signal processing diagram showing a procedure for providing a call blocking intelligent network service.

Explanation of symbols on the main parts of the drawings

101: calling party subscriber terminal 102: calling party exchange

103: database 104: destination exchange

105: intelligent network SCP (SCP)

106: called party's subscriber terminal

In order to achieve the above object, the additional service and intelligent network service providing system in a public switched telephone network according to the present invention

A plurality of landline telephone subscriber stations subscribed to additional services and / or intelligent network services;

A database that stores call destination related additional service information of multiple subscribers and trigger data of the call destination related intelligent network service;

Intelligent network SCP (SCP) for storing intelligent network service information and providing intelligent network service processing; And

It is connected to the multiple subscriber terminals and forms a public telephone switching network through the interconnection to handle inbound and outbound call processing to the subscriber terminal, and retrieves outbound and outbound additional service information and intelligent network service trigger data of the subscriber during inbound and outbound call processing. In this case, if the conditions according to the search results are met, the service is characterized by consisting of a plurality of exchanges that perform the requested service.

In addition, as another constituent means of the present invention, a method for providing an additional service and an intelligent network service in a public switched telephone network (PSTN), which stores and manages additional service and intelligent network service related information in an external database of an exchange,

A search step of receiving a search result by requesting a profile search of a corresponding subscriber stored in an external database when calling or receiving from a subscriber terminal;

A call processing step of performing number translation and call processing using the subscriber profile received in the searching step;

An additional service processing step of processing an additional service according to a call processing situation when the additional service condition of the subscriber is satisfied by referring to the received subscriber profile during the call processing; And

During the call processing, if there is intelligent network trigger information of the subscriber with reference to the received subscriber profile, the intelligent network service processing step of processing the intelligent network service is activated.

Hereinafter, a method and system for providing an additional service and an intelligent network service in a PSTN according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a structural diagram illustrating a system for providing an additional service and an intelligent network service in a PSTN according to the present invention. As shown in FIG. A database that stores the exchange 102, the called party exchange 104 to which the called party terminal 106 is connected, and additional service information and intelligent network service trigger data of the subscriber, and provides information according to the requests of the respective exchanges 102 and 104. (103), the intelligent network SCP (105) for storing the intelligent network service information and providing the intelligent network service information at the request of the exchange (102, 104), and the called party subscriber terminal (106) receiving the call.

FIG. 2 is a diagram showing in detail the structure of a call processing system inside the switches 102 and 104 in the system, wherein the switches 102 and 104 are each called and received by the subscriber, state management of the subscriber, call request and called party number. The digital subscriber processing unit 201 and the subscriber terminal 101 analyzes the digit signals inputted by the subscriber station 101, translates them into phone numbers, and requests the database 103 to search for additional service information and trigger data for each subscriber number. A number translation unit 202, an additional service processor 203 in charge of additional service processing at the exchange other than the basic call processing, an intelligent network service processor 204 in charge of intelligent network service processing in addition to the basic call processing, and the number The routing processing unit 205 is configured to receive and process a routing request signal transmitted from the translation unit 202.

In the above configuration, the number translator 204 searches the database 103 connected to the outside of the exchange to obtain subscriber profiles such as additional service information and intelligent network service trigger data of the subscriber, and retrieves each piece of information from the additional service processor. 203 or the intelligent network service processing unit 204.

In addition, the database 103 stores the calling supplementary service data 103a and the called supplementary service data 103b for each subscriber number, and the intelligent network SCP 105 includes the calling intelligent network service trigger data subscribed for each subscriber number. 105a) and the terminating intelligent network service trigger data 105b.

The service providing process by the system configured as described above is performed as follows.

When a wired telephone subscriber makes an outgoing call, a call connection request is transmitted from the calling party subscriber terminal 101 to the calling party exchange 102, and a call processing algorithm is performed.

At this time, the calling side exchange 102 translates the digits of the number translation unit 202 to recognize the telephone number of the calling party 101 for the call origination processing of the calling party 101, and then the subscribers in the database 103, 105. Retrieves outgoing additional service information and outgoing intelligent network service information by number.

As a result of the search, when there is intelligent network service trigger information for the originating subscriber 101, the specific detection point DP of the originating call processing state machine is armed. Then, if the amended DP condition is satisfied during the call progress, the intelligent network SCP 105 is queried for the intelligent network service processing.

If there is additional service information for the originating subscriber 101 as a result of the search, the additional service processing is performed according to the situation of the call processing state machine. When a call is transmitted from the originating exchange 102 to the destination exchange 104 for call processing of the originating exchange 102 to proceed with routing to the called party 106, the called side exchange 104 is the called party. In order to process the incoming call to the 106, the subscriber's incoming service information and the incoming intelligent network service information are retrieved from the databases 103 and 105. The destination side exchange 104 armes a specific DP (Detection Point) of the incoming call processing state machine when there is intelligent network service trigger information for the destination subscriber 106 as a result of data retrieval, and the DP condition that is armed during the call progress. When this is satisfied, the intelligent network SCP 105 is queried for processing of the intelligent network service. If there is additional service information for the called party subscriber 106 as a result of the data retrieval, the additional service process is performed according to the situation of the call processing state machine. And, after all the call processing proceeds, if the call should be routed to the called party 106, the call is connected to the called party 106.

3 is a flowchart illustrating a process of a call transfer service as an example of a method of providing an additional service according to the present invention.

Referring to the description of the transfer service providing procedure, first, when the calling party A (301) dialed the number of the transfer subscriber B (305) to attempt the call (308), and the calling party A (301) The connected exchange 302 operates to request the calling supplementary service information and the calling intelligent network service information of the database 303 for call origination processing of the calling party A 301 (309). As a result, the search result of the originating supplementary service information and the originating intelligent network service information of the originating party A 301 is transmitted to the originating exchange 302 (310).

In this case, since the calling party A 301 dials the transfer subscriber B 305, the calling exchange 302 determines that the calling party's intelligent network service and additional service processing are not necessary based on the search result. Therefore, the routing proceeds to the transfer subscriber B (305) to request the basic call connection to the destination exchange 304 that manages the transfer subscriber B (305) (311).

When a signal is transmitted to the destination exchange 304, the destination exchange 304 requests the call forwarder B 305 to retrieve the incoming service information and the incoming intelligent network service information from the database 303 for call processing. The search result is received (312, 313). Then, the destination exchange 304 recognizes that the call transfer service is active among the additional service information of the transfer subscriber B 305 based on the search result, and the final exchange exchange 306 to perform the call transfer process. Root processing is performed to request divert call connection (314).

Similarly, the destination exchange 306, which has received the call connection request, requests the destination C 307 to retrieve the incoming service information and the incoming intelligent network service information to the database 303 for call processing, and transmits the result. (315,316). Then, according to the received search result, the destination exchange 306 determines that the call should be delivered to the called party C 307, and connects the call to the destination C 307 according to the determination result (317).

Next, FIG. 4 is a flowchart illustrating a processing procedure of a call blocking intelligent network service according to the present invention. In this embodiment, it is assumed that the called party B 406 has subscribed to the call blocking intelligent network service from the calling party A 401.

Referring to this, when the calling party A 401 dials the telephone number of the called party B 406 to attempt a call, the basic call connection request of the calling party A 401 is the calling party A 401. It is forwarded to the switch 402 connected with (407), the originating exchange 402 receiving the call to the service information storage database 403 for the call origination processing of the calling party A (401) and the originating additional service information and the originating intelligent network The service information is requested to be retrieved and the result is received (408, 409).

The originating exchange 402 then checks the data retrieval result to determine if the service is to be processed. In this case, it is assumed that the intelligent network service and the additional service processing of the calling party are not necessary. Therefore, since no service processing is required, a basic call connection is requested to the destination exchange 404 to which the destination B 405 is connected in order to proceed with routing to the destination B 405 (410).

Upon receiving the call connection request, the destination exchange 404 requests a search of the destination service information of the called party B 405 and the destination intelligent network service information to the pre-call processing database 403 and receives the result (411, 412).

At this time, as previously assumed, the called party B 406 subscribes to the call blocking intelligent network service and sets the calling party A 401 as the blocking target. The call blocking intelligent network service information is stored in the database 403, and this information is transmitted to the destination exchange 404 during the search.

Accordingly, the destination exchange 404 detects that the called party B 406 has the intelligent network service trigger information from the search result, and arm the corresponding DP (that is, the call initiation detection DP). Accordingly, the call blocking service is triggered in the DP, and the number information of the calling party A 401 is transmitted to the intelligent network SCP 405 (413).

The intelligent network SCP 405 compares the number of the calling party A 401 with the internal service data to determine that the call should be blocked, and sends the announcement to the called party A 401 to the called exchange 404. Instruct 414.

By doing so, the destination exchange 404 sends a guide broadcast indicating that the call connection is impossible to the calling party A (401) without connecting the incoming call to the called party B (406) (415).

As described above, the present invention has the effect of providing an additional service to all subscribers regardless of the capacity or performance of the PSTN exchange.

In addition, in providing the intelligent network service, in addition to the SAC (Service Access Code) method provided by the existing exchange and the intelligent network SCP interworking, there is an effect that can provide a variety of inbound and outbound intelligent network services based on personal telephone numbers.

Claims (4)

A plurality of landline telephone subscriber stations subscribed to additional services and / or intelligent network services; A database that stores call destination related additional service information of multiple subscribers and trigger data of the call destination related intelligent network service; Intelligent network SCP (SCP) for storing intelligent network service information to perform intelligent network service processing; And It is connected to the multiple subscriber terminals and forms a public telephone switching network through the interconnection to handle the outgoing call processing to the subscriber terminal, and retrieves the outgoing call additional service information and intelligent network service trigger data of the subscriber during the incoming call processing. A plurality of exchanges that perform the required services if the conditions according to the search results are met; An additional service and intelligent network service providing system in a public switched telephone network (PSTN) including. 2. The exchange according to claim 1, wherein the exchanger A digital subscriber processing unit for handling incoming / outgoing calls of subscribers, status management of subscribers, call request and incoming call number; A number translation unit for retrieving additional service information and intelligent network trigger data of the called subscriber from the database, analyzing the input digit signal, and translating the received digit signal into a telephone number; An additional service processor which receives additional service information retrieved from the number translation unit and processes the corresponding additional service; An intelligent network service processing unit which receives the intelligent network service trigger data from the number translation unit and activates the corresponding trigger to perform the intelligent network service processing by referring to the response of the intelligent network SCP; And Routing processing unit for receiving the routing request signal transmitted from the number translation unit to perform a call transfer to the translated number Additional service and intelligent network service providing system in a public switched telephone network (PSN), comprising a. A method for providing an additional service and an intelligent network service in a public switched telephone network (PSTN), which stores and manages additional service and intelligent network service related information in an external database of a switch. A search step of receiving a search result by requesting a profile search of a corresponding subscriber stored in an external database when calling or receiving from a subscriber terminal; A call processing step of performing number translation and call processing using the subscriber profile received in the searching step; An additional service processing step of processing an additional service according to a call processing situation when the additional service condition of the subscriber is satisfied by referring to the received subscriber profile during the call processing; And An additional service in a public switched telephone network (PSTN), comprising: an intelligent network service processing step of processing an intelligent network service by activating the intelligent network trigger information of a subscriber with reference to a received subscriber profile during call processing; And intelligent network service providing method. The method of claim 3, wherein the intelligent network service processing step Storing call origin trigger information of a subscriber in the database; Determining whether intelligent network trigger information is included in the search result provided in the searching step; If there is no trigger information as a result of the determination, terminates as is; and if there is trigger information, activating it; And If the setting conditions of the incoming and outgoing intelligent network service during call processing is met, performing the incoming and outgoing intelligent network service, the additional service and intelligent network service providing method in a public switched telephone network (PSTNN), characterized in that.