KR100964119B1 - Apparatus and Method for providing single number service under number portability - Google Patents

Abstract

According to the present invention, when a national representative number service call of an intelligent network is generated from a subscriber provided with a QoR type number portability service, a local routing is performed based on the location of the number portability subscriber, so that the subscriber of the number portability service can use the accurate national representative number service. Technology

To this end, the present invention, when the national representative number service call from the number portability subscriber, transmits the current location information of the calling subscriber to the intelligent network based on the current location information of the calling subscriber in the intelligent network registered in the national representative number It is configured to connect the call to the telephone number of the workplace nearest to the current location of the calling subscriber of the workplace.

Description

Apparatus and Method for providing single number service under number portability}

1 is a network structure illustrating a method for providing a number portability service of a conventional QoR scheme.

2 is a network diagram of a device for providing a national representative number service based on QoR type number portability according to an embodiment of the present invention.

3 is a field structure of the RN parameter applied to the present invention.

4 is a flowchart illustrating a method of providing a national representative number service based on QoR type number portability according to an embodiment of the present invention.

The present invention relates to an apparatus and method for providing a national representative number service based on number portability, and more particularly, when a national representative number service call of an intelligent network occurs from a subscriber receiving a number portability service of a QoR method. The present invention relates to a technology that enables short-range routing based on a subscriber's location.                         

As is known, the number portability service is an additional service of an intelligent network that allows a subscriber to use an existing telephone number as it is, even if the subscriber changes out of the same telephone range or changes the residence (location).

A method of providing a number portability service of a QoR type among the methods recommended for providing number portability in the ITU-T will be described with reference to FIG. 1.

It is assumed that subscriber A, which was accommodated in the switch 10 before the change, moves to the switch 20 after the change using the number portability service, and then subscribes.

Subscriber A continuously uses the telephone number given by the switch 10 before the change in the switch 20 after the change. Therefore, after the change, the switch 20 must manage the station number and the subscriber number that the subscriber A brought from the exchange before the change, in addition to the station number originally owned by the exchange. Before number portability was provided, managing up to 15 telephone numbers was sufficient, but intelligent network type portability such as QoR was introduced, and the exchange should be able to manage up to 800 number.

Then, the change 10 before the change is stored in the subscriber service file of the subscriber A, the information ported, the change 20 after the change is stored in the service file of the subscriber A the information that has been ported from the other exchange, Number Protability Database (NPDB) 30 stores the name, phone number, social security number, address and location routing information (LRN) of the number mobile subscriber, which is the area code, station number, and It is common for subscriber number 0000 to be stored.

In the network structure as described above, if any originating subscriber B generates a call with the telephone number of subscriber A as the called number (①), the calling party exchanger 40 translates the called number to make a long distance call. (2), and the outgoing Toll exchanger 50 transfers the call to the incoming Toll exchanger 60 in the region where the incoming number is received through number translation (③).

The incoming Toll exchanger 60 connects the call to the pre-change exchange 10 that accepts the subscriber A's telephone number through number translation for the incoming number (④).

Accordingly, before switching, the exchange 10 confirms that the subscriber A ported the number through the query of the subscriber routing table for the called number, and puts the information that the subscriber has moved the number on the REL (Release) message of the ISUP. Transfer to exchange 60 (⑤).

Receiving the REL message, the incoming Toll exchanger 60 analyzes the REL message to check the number porting fact, and triggers the QoR function to query the NPDB 30 through the Intelligent Network Application Protocol (INAP) (⑥). ).

The NPDB 30 searches for which operator or which exchange the called party number has moved to and responds to the incoming Toll exchanger 60 (⑦).

The incoming toll exchanger 60 connects the call to the exchange 20 after the change of the subscriber by using the location routing number (LRN) information received from the NPDB 30 (8).                         

After the change, the exchange 20 searches the subscriber routing table for the called number received through the IAM, and calls the subscriber A terminal.

Even if the called party changes the location or the operator in the call right through this procedure, the caller makes a telephone call with the called party using the before-changed phone number if the caller only knows the called party's unchanged phone number.

On the other hand, the current telephone numbering system divides the wide area code and the call right into several regions and assigns different numbers according to regions, so the approximate location of the subscriber can be determined by looking at the area code and the station code. . In other words, the area code and station number used in a region can be used to determine the city, district, and district of that region.

National Representative Number (eg, 1588, 1544, 1566, etc.) services use the caller's area code and station number to provide near-field routing using geographical information contained in the area code and telephone number. It is an intelligent network service that connects a call to a caller and a place located on the most recent street among the operators of the subscribers who subscribe to the representative number.

In the current national representative number service, when a caller dials a national representative number (1588-XXXX), the calling exchange detects that the call is an intelligent network call by translating the number, and a service switching point (SSP), which is an intelligent network exchange. Call), the service switcher connects the call to a service control point (SCP) with service logic corresponding to the representative number service, and the service controller is a business telephone number registered in the national representative number. The office telephone number closest to the caller is inquired and transmitted to the service exchanger, and the service exchanger connects the call to the business telephone number, thereby enabling the telephone connection to the workplace closest to the caller and the caller. Here, the method for the service controller to look up the operator's telephone number closest to the caller, by using the station number of the caller's caller number, the telephone number having the station number of the location (shortest distance) that matches or closest to the station number; The method of recognizing the telephone number closest to the caller is mainly used.

However, when the number portability service subscriber who changes the location or the operator dials the representative number, the calling number used to provide the national representative number service because the calling number is treated internally as the telephone number before the change. Becomes the phone number of the previous location given by the exchange before the change.

For this reason, if a short-range routing is performed from the service controller of the intelligent network to the telephone number before the change without considering the number porting, the call is not actually connected to the workplace closest to the location of the number portability service subscriber, and the number portability service is performed. Since the call connects to the nearest business location from the subscriber's previous location, it is difficult to accurately provide the national representative number service.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and provides a method for providing a national representative number service based on QoR type number portability, which enables a subscriber using a QoR type number portability service to use an accurate national representative number service. Its purpose is to provide law and apparatus.

The apparatus for providing a national representative number service based on number portability according to an embodiment of the present invention for achieving the above object, in the apparatus for providing a national representative number service based on QoR method number portability; A calling party exchange that transmits the current location information of the calling subscriber to the intelligent network and transmits the call to the intelligent network when the national representative number service call is sent from the calling subscriber who is a number portability subscriber; A service controller equipped with service logic for performing the national representative number service, and controlling a call connection from a business list of a business operator registered with a specific representative number to a business telephone number that is the shortest distance from the calling subscriber; And a service interworking with the called party exchange to transmit the current location information of the calling subscriber and the called number according to the national representative number service transmitted from the exchange to the service controller, and to call the business telephone number transmitted from the service controller. It characterized in that it comprises an exchanger.

A method for providing a national representative number service based on number portability according to an embodiment of the present invention for achieving the above object, in the method of providing a national representative number service based on QoR method number portability; A first step of, if a called party number for a national representative number service is input from a subscriber, a calling party exchange checks whether the subscriber (caller) is a number portable subscriber; If the originating subscriber is a number portability subscriber, transmitting the current location information of the originating subscriber to a service exchange of an intelligent network, and transmitting a call to the intelligent network; A third step of the service exchanger extracting a station number and an area code from the current location information of the originating subscriber and transmitting the extracted station number and area code and the called number to a service controller equipped with a national representative number service logic; The service controller extracts the telephone number of the business establishment located at the shortest distance from the calling subscriber based on the area code and the country code from the list of businesses registered with the national representative number corresponding to the called number and through the service exchanger. And a fourth process of connecting the call to the telephone number of the service provider.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail.

The apparatus for providing a national representative number service based on number portability according to an embodiment of the present invention translates the dialed number (called number) from the terminals 171, ..., 174, as shown in FIG. If it is determined to be an intelligent network call, the intelligent network identification code of the corresponding call is analyzed by translating the number of the call connected from the plurality of exchanges 160, ..., 163 connecting the call to the service exchangers 154 and 155 of the intelligent network. Signals between the service controller 152 and the service switcher 154 and 155 through a plurality of service switchers 154 and 155 connecting the call to the service controller 152 having the corresponding service logic through the NO.7 signaling method. The signal relay switch 153 relaying the exchange, and the service logic corresponding to the national representative number service are mounted, and from the source of the call through the translation of the number of the call connected from the service switch 154, 155. Chapter is close to the source to extract the telephone number of the sites located within the arc is a service controller 152 to point to the extracted telephone number.

In particular, in the present invention, the exchanges 160, ..., 163 are IAMs according to the ISUP transmitted to provide call / calling number information for call setup to the service switcher 154 if the caller is a number portability subscriber for outgoing calls. When transmitting (Initial Address Message), the station number and area code of the originating exchange are input into the RN (Redirecting Number) parameter of the IAM. The calling exchange uses the station number designated as the representative station number among one or more station numbers as the station number of the corresponding calling exchange.

The structure of the RN parameter field is as shown in FIG. 3.

7-bit nature of address indicator, 1-bit O / E identifier, 2-bit spare, 2-bit address presentation restricted indicator, 3-bit numbering plan indicator ), Consisting of 1-bit spares and subfields corresponding to a plurality of 4-bit address information, and consists of m bytes in total.

For the realization of the present invention, the source exchange indicates that it is a subscriber number for domestic use by entering "0000001" in the address personality identifier of the RN parameter, and inputs the address expression limiting identifier "00" to allow address expression. To indicate that the ISDN or landline telephone number plan by entering the number planning identifier "001", and enter the area code and the number corresponding to the area code in the address information, respectively. It is displayed as 4 bits of address information for each number that composes the area code and station number.

The code of the subfields of the RN parameter field is based on the recommendations in ITU-T G.762.

Next, a method for providing a national representative number service based on number portability according to an embodiment of the present invention will be described in detail with reference to the flowchart shown in FIG. 4.

When "1588-YYYY" for using the national representative number service is dialed from the calling party 171 (S402), the calling party exchange 160 looks up the calling party number of the calling party 171 in the subscriber service profile. 171 checks whether the number portability subscriber (the port-in subscriber who has moved the number) (S404).

As a result of the check, when the calling party 171 is identified as the number portability subscriber (YES in S404), the calling party number is entered in the CPN parameter of the IAM, and the area code and the representative station number of the calling party exchange 160 in the RN parameter. Input (S406), and transmits to the service exchange 154 (S410).

If it is confirmed in S404 that the calling party 171 is not the number portability subscriber (No in S404), only the calling number is inputted in the CPN of the IAM (S408), and transmitted to the service exchanger 154 ( S410).

Subsequently, the service exchanger 154 extracts the RN parameter through analyzing the IAM (S412, S414), and extracts the calling area code and the station number from the RN parameter if the RN parameter is set (YES in S414). If the RN parameter is not set (NO in S414), the calling area code is extracted from the CPN, and the extracted calling area code, the station number, and the called number are transmitted to the service controller 152 (S420).

The service controller 152 inquires a list of businesses of a national representative number operator corresponding to the called number through number translation of the called number, and uses the calling area code and the station number to identify the same area code as the source of the source list. It extracts a business place having a station number and requests a call connection to the service exchanger 154 that accepts the telephone number of the called terminal 172 of the extracted business place (S422).

The service exchanger 154 requests a call connection to the called side exchange 161 accommodating the called terminal 172, and the called side exchange 161 applies a ring current to the called terminal 172 to actually receive the terminal 172. ), When the called terminal 172 responds to the hook-off (YES in S424), a call path is connected between the calling / called terminals 171 and 172 so that the calling subscriber and the called party can be connected. The voice call between the two becomes possible (S426).

However, unlike the case described above, if the called terminal 172 does not respond within a predetermined time (NO in S424), the call failure message output from the exchange 161 is sent to the service controller 152 through the service exchange 154. The service controller 152 transmits a code for call failure announcement to an intelligent additional device (IP) so that the call failure announcement broadcast is transmitted to the calling subscriber 171 (S428).

Afterwards, the originating exchange 160 returns all the allocated resources and terminates the call (S430).

In another embodiment of the present invention, after the source exchanger 160 inserts a station number and area code corresponding to the representative station number of the source exchanger 160 into the GD (Generic Digit) parameter of the IAM, the GD parameter is set. By transmitting the IAM to the service exchanger 154, the service exchanger 154 can extract the station number and the area code after the change of the number portability subscriber having the telephone number before the change.

Thereafter, the service exchanger 154 may provide the national representative number service to the number portability subscriber using the extracted station number and area code.

According to the present invention as described above, it is possible to accurately provide the national representative number service, which is an additional value of the intelligent network to subscribers using the QoR type portability service.

On the other hand, the present invention is not limited to the above-described embodiment, but can be modified and modified within the scope not departing from the gist of the present invention, such modifications and changes should be regarded as belonging to the following claims. will be.

Claims (9)

An apparatus for providing a national representative number service based on QoR type number portability; A calling party exchange that transmits the current location information of the calling subscriber to the intelligent network and transmits the call to the intelligent network when the national representative number service call is sent from the calling subscriber who is a number portability subscriber; A service controller equipped with service logic for performing the national representative number service, and controlling a call connection from a business list of a business operator registered with a specific representative number to a business telephone number that is the shortest distance from the calling subscriber; And The service exchanger which transmits the current location information of the calling subscriber and the called number according to the national representative number service transmitted from the exchange to the service controller, and interlocks with the called side exchange so that the business telephone number transmitted from the service controller is called. Number portability-based national representative number service providing apparatus, characterized in that configured to include. The method of claim 1, The originating exchange, Number portability based on the current location information of the calling subscriber by inputting the area code and the station number of the calling exchange in the Redirecting Number (RN) parameter of the IAM (Initial Address Message) of the ISUP (ISDN User Part) National representative number service providing device. The method of claim 1, The originating exchange, Number portability-based national representative number service characterized by displaying the current location information of the calling subscriber by inputting the area code and the station number of the calling exchange in the GD (Generic Digit) parameter of IAM of ISUP (ISDN User Part) Providing device. A method of providing a national representative number service based on QoR method number portability; A first step of, if a called party number for a national representative number service is input from a subscriber, a calling party exchange (calling party exchange) confirms that the subscriber (calling subscriber) is a number portable subscriber; If the originating subscriber is a number portability subscriber, transmitting the current location information of the originating subscriber to a service exchange of an intelligent network, and transmitting a call to the intelligent network; A third step of the service exchanger extracting a station number and an area code from the current location information of the originating subscriber and transmitting the extracted station number and area code and the called number to a service controller equipped with a national representative number service logic; And The service controller extracts the telephone number of the business establishment located at the shortest distance from the calling subscriber based on the area code and the country code from the list of businesses registered with the national representative number corresponding to the called number and through the service exchanger. A method for providing a national representative number service based on number portability, comprising a fourth process of connecting a call to the telephone number of the service provider. The method of claim 4, wherein In the first step, the originating exchange is A method of providing a national number service based on number portability, characterized in that by checking the subscriber service profile using the calling party's calling number, confirming whether the calling subscriber subscribes to the number portability. The method of claim 4, wherein In the second process, And wherein the calling side exchange displays the current location information of the calling subscriber by inputting the area code and the station number of the calling side exchange in the RN parameter of the IAM of the ISUP. The method of claim 6, The third process, A first step of the service exchanger determining whether an RN parameter exists in the IAM transmitted from the originating exchange; If the RN parameter exists in the IAM, extracting the calling party's station number and area code; If the RN parameter does not exist in the IAM, extracting the calling party's station number and area code from the CPN parameter; And And a fourth step of transmitting the extracted station number, area code, and the called number to the service controller. The method of claim 4, wherein And the calling party exchanger displays the current location information of the calling subscriber by inputting the area code and the station number of the exchanger in the GD parameter of the IAM of the ISUP. The method of claim 8, The third process, A first step of the service exchanger determining whether a GD parameter exists in the IAM transmitted from the originating exchange; A second step of extracting the calling party's station number and area code if the GD parameter exists in the IAM; If the GD parameter does not exist in the IAM, extracting the calling party's station number and area code from the CPN parameter; And And a fourth step of transmitting the extracted station number, area code, and the called number to the service controller.

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