KR100775541B1 - System and method for providing call service based location - Google Patents

Abstract

A system and a method for providing a location-based call service are provided to allow the user of an origination terminal to input simply a speed number so as to connect a call to a pre-set destination terminal. When an origination terminal(150) requests a call setup and if a termination number received from the origination terminal(150) is a pre-set number, an originating MSC(Mobile Switching Center)(110) obtains a routing identifier to an intelligent MSC(130), and transmits cell information and the pre-set number of the origination terminal(150). When a destination terminal(160) is not located in a pre-set area, the originating MSC(110) connects a call between the origination terminal(150) and the destination terminal(160) by using an actual termination number of the destination terminal(160) substituted from the pre-set number. An HLR(Home Location Register)(120) receives a termination number routing information request message from the originating MSC(110), and when the origination terminal(150) is located in the pre-set area, the HLR(120) transmits termination number routing information including cell information of the destination terminal(160) to the originating MSC(110). The intelligent MSC(130) determines whether the origination terminal(150) is located in the pre-set area, transmits the location information of the origination terminal(150) to the originating MSC(110), substitute the pre-set number received from the originating MSC(110) to the actual termination number, and transmits it to the originating MSC(110).

Description

System and method for providing call service based location

1 is a diagram schematically showing the configuration of a communication system for providing a call service according to an embodiment of the present invention.

2 is a diagram illustrating a process of providing a call-based service by a call providing system according to an exemplary embodiment of the present invention.

3 is a diagram illustrating a process of providing a call-based service by a call providing system according to another exemplary embodiment of the present invention.

4 is a diagram illustrating a process of determining whether a calling terminal is located in a free call area according to an exemplary embodiment of the present invention.

5 is a view showing a call processing process when the calling terminal is located in the free call area according to an embodiment of the present invention.

6 is a view showing a call processing process when the calling terminal is not located in the free call area according to an embodiment of the present invention.

The present invention relates to a system and method for providing a call service, and more particularly, to provide a location-based call service that can automatically connect a call through a guide message when the called terminal is located outside a preset area. A system and method for doing so.

The free call service according to the related art is to provide a call service between mobile terminals without additional communication charges, such as an internal telephone used in a general office, when a mobile terminal user enters a specific cell capable of a private mobile communication service.

However, in order to provide a conventional free call service, there is a problem in that a function of enabling a private mobile communication service to a mobile terminal is required and a wireless private exchange is required.

To solve this problem, when a calling terminal enters a free call area using a mobile communication network and requests a call with a preset called number (for example, # 1111) without using a wireless private exchange, the called terminal is free. If you are located in a call area, a technology for providing free calls is proposed.

However, according to the related art, when the called terminal is outside the free call area, there is a problem that the incoming call by the preset called number is impossible.

In order to solve the conventional problems as described above, the present invention is to propose a system and method for providing a location-based call service with a simple upgrade of the existing communication system without adding a separate communication device.

Another object of the present invention is to provide a system and method for providing a location-based call service capable of connecting a call to a preset called terminal by simply inputting a preset number when the calling terminal user inputs a called number.

Another object of the present invention is to provide a system and method for providing a location-based call service even when a called terminal is located in a predetermined area.

Another object of the present invention is to provide a system and method for providing a location-based call service that can automatically connect to a pay call through a guide message when the called terminal is located outside the preset area.

Still other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention, in a method for providing a location-based call service by the call providing system connected to the terminal through a communication network, (a) there is a request for a call originating terminal Determining whether the called number received from the calling terminal is a preset number; (b) if the called number is a preset number, determining whether the called terminal is located in a preset region by extracting location information of the called terminal corresponding to the called number; (c) if the called terminal is not located in a preset area, replacing the preset number with an actual called number of the called terminal to connect a call between the calling terminal and the called terminal.

According to another aspect of the present invention, there is tangibly embodied a program of instructions that can be executed by a call providing system to perform a method of providing a call service, and records a program that can be read by the call providing system. A medium, comprising: (a) determining whether a called number received from an originating terminal is a preset number when there is a call establishment request; (b) if the called number is a preset number, determining whether the called terminal is located in a preset region by extracting location information of the called terminal corresponding to the called number; (c) if the called terminal is not located in a preset area, recording a program for replacing the preset number with an actual called number of the called terminal to connect a call between the calling terminal and the called terminal; Record carriers may be provided.

According to another aspect of the present invention, in a call providing system for providing a location-based call service to a terminal connected through a communication network, when a call originating terminal call setup request is received, the called number received from the calling terminal is a preset number. Obtains a routing identifier to the intelligent network switch that manages the preset number, and transmits the cell information of the calling terminal and the preset number to the intelligent network switch, and the preset number if the called terminal is not located in a preset area. An outgoing exchanger for connecting a call between the calling terminal and the called terminal with an actual called number of the called terminal with which is substituted; A home location register which receives the called party routing information request message of the calling exchange and transmits called party routing information including cell information of the called terminal to the calling exchange when the calling terminal is located in the preset area; And determining whether the calling terminal is located in a predetermined area by using cell information of the calling terminal received from the calling exchange, and transmitting the location information of the calling terminal to the calling exchange, and receiving the call from the calling exchange. It may include an intelligent network switch to replace the preset number with the actual called number of the called terminal to transmit to the calling exchange.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

 Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

1 is a diagram schematically illustrating a configuration of a communication system for providing a call service according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a communication system for providing a location-based call service may include a calling terminal 150, a called terminal 160, and a call providing system 100.

Calling and receiving terminals 150 and 160 are connected to a call providing system 100 for providing a call service through a communication network (not shown). The originating and terminating terminals 150 and 160 may be applied without limitation as long as the terminal is provided with a communication means to enable a telephone connection and data communication service. That is, a cellular phone, a PCS phone, a PDA phone and the like are typical examples, but the present invention is not limited thereto.

The communication network refers to a communication network capable of providing a telephone call and data communication service to a terminal employing a code division multiple access (CDMA), a time division multiple access (TDMA), a wideband code division multiple access (WCDMA) scheme, or the like. The wireless communication network may include a base station (BTS, not shown) and a base station controller (BSC, not shown) between the calling and terminating terminals 150 and 160 and the call providing system 100. Of course, when the communication network is a WCDMA scheme, the communication network may include a Node B and an RNC. Details of the configuration of the communication network are somewhat distanced from the gist of the present invention, so detailed description thereof will be omitted.

The call providing system 100 may include an originating exchange 110, a home location register 120, an intelligent network exchange 130, and a destination exchange 140.

The call providing system 100 determines whether the called terminal 160 is located in a preset area when a call request including a called number in the form of a shortcut number is received from the calling terminal 150 and provides a call service accordingly. can do. Hereinafter, in order to facilitate a clear understanding and explanation of the invention, a preset area will be referred to as a free call area. However, if the terminating terminal 160 is located in a preset area, whether to provide a free call or to charge a discounted communication fee is a matter of the carrier's policy, and thus the present invention is not limited to the free call area. Will have to understand. In addition, it will be described that the paid call is provided in a region excluding a preset region, but it should be understood to facilitate a clear understanding and explanation of the invention. The call providing system 100 may provide a free call when the called terminal 160 is located in the free call area. Here, in order for the call providing system 100 according to the present invention to provide a call service, it is obvious that the calling terminal 150 should also be located in a free call area. However, the calling and destination terminals 150 and 160 may be located in different free calling areas. In addition, when the called terminal 160 is outside the free call area, the call providing system 100 may provide a pay call service through the announcement broadcast to the calling terminal 150. In addition, when leaving the free call area according to the movement of the location of the calling and receiving terminals 150 and 160, the call providing system 100 counts the time that the calling and receiving terminals 150 and 160 are located in the free calling area during the entire call time. You can offer free calls for some times. In addition, if the calling and destination terminals 150 and 160 are located in the free call area at the time of the first call connection, the free call service will be provided until the end of the call even if the free call area leaves the free call area according to the movement of the free call. Could be In addition, the call providing system 100 may provide a data service. Therefore, it is possible to provide a multimedia messaging service (MMS), a short message service (SMS), etc. between the calling and destination terminals 150 and 160. However, the following call providing system 100 provides a telephone call service for convenience of description. It will be described as, but the present invention is not limited thereto.

The originating and terminating exchanges 110 and 140 may perform a function of transferring and processing a call to provide a call service according to the present invention between the originating and terminating terminals 150 and 160 connected through a communication network. In FIG. 1, the source and destination exchanges 110 and 140 are separately illustrated for convenience of description, but when the source and destination terminals 110 and 140 connect a call within the same exchange, the source and destination exchanges 110 and 140 may be the same exchange. . The calling exchange 110 according to the present invention may perform a function of setting a free call field by determining whether the calling terminal 150 is located in a free call area by using a message received from the home location register 120. have. Detailed functions performed by the originating and terminating exchanges 110 and 140 according to the present invention will be described with reference to FIGS. 4 to 6.

Home Location Register (HLR) 120 refers to a mobile with information, subscription information, location information, and authentication capabilities. In addition, the home location register 120 may perform a function of providing a routing identifier to the intelligent network switch 130 in response to a request of the originating terminal 150. In addition, the home location register 120 according to the present invention, after confirming that the free call area field is set to ON, the called party location to the destination exchange 140 to check the current cell information of the called terminal 160. It may perform a function of transmitting an information request message (PSI, Provide Subscriber info) and transmitting the received called party location information to the calling terminal 150. Detailed functions performed by the home location register 120 according to the present invention will be described with reference to FIGS. 4 to 6.

The intelligent network switch 130 checks whether the calling terminal 150 is located in the free calling area by using the cell information of the calling terminal 150, and sends a call processing event report request message including the same to the calling exchange 110. Can transmit In addition, the intelligent network exchange 130 to perform the function of replacing the received called number (for example, the speed dial number, the number used in the preset area, etc.) with the actual called number to transmit to the calling exchange 110. Can be. In addition, the intelligent network switch 130 checks the cell information of the called terminal 160 to determine whether the called terminal 160 is located in the free call area, and transmits the billed or non-charged message to the calling exchange 110 accordingly. have. Detailed functions performed by the intelligent network switch 130 according to the present invention will be described with reference to FIGS. 4 to 6.

2 is a diagram illustrating a process of providing a location-based call service by a call providing system according to an exemplary embodiment of the present invention.

Referring to FIG. 2, in step 205, the call providing system 100 receives a call request from the originating terminal 150. Here, according to the present invention, it is preferable that the called number according to the call request is a shortcut number.

In step 210, the call providing system 100 determines whether the called number is a preset number. Here, the preset number may be a shortcut number. In addition, the preset number may be an extension number used within a specific region. In addition, the preset number may be a number used within the preset area. In addition, the preset number may be a number (for example, '# + actual called number') to which an identifier is assigned to the actual called number. However, for convenience of description, the preset number will be described as an example of a shortcut number. A speed dial number is a simple number provided in place of a long-term general telephone number used in the past. When using a speed dial number when a call setup request is used, a speed dial number identifier (eg, "*") may be included to distinguish the speed dial number from a general emergency number (eg, "112"). However, it is obvious that the shortcut number according to the present invention is not necessarily used to include a shortcut number identifier, and the shortcut number may be used alone. When a shortcut number identifier is used, the shortcut number identifier is preferably a "*" button (or "#"), but the present invention is not limited thereto.

As a result of the determination, if the called number is not a speed dial number but a general telephone number (for example, 02-xxx-xxxx, 016-xxx-xxxx, etc.), the call providing system 100 proceeds to step 215 to determine the originating and receiving terminal ( 150, 160) and if the call is terminated, proceed to step 220 to perform the charging procedure, and then proceeds to step 225 to end the call processing procedure.

That is, the call providing system 100 may provide a free call service according to the present invention without affecting an existing call processing procedure. Here, since the details of the general call processing procedure are somewhat different from the gist of the present invention, the detailed description thereof will be omitted.

As a result of the determination, when the called number is a speed dial number, the call providing system 100 may determine that the calling terminal 150 is the location-based call service subscriber.

In operation 230, the call providing system 100 obtains the cell information of the calling terminal 150 and extracts the location information of the calling terminal 150.

In operation 240, the call providing system 100 may determine whether the calling terminal 150 is located in the free calling area by using the extracted location information of the calling terminal 150. Here, the free call area may be a preset specific cell area, or may be a preset specific area (eg, within 00 university campus). In addition, the free call zone may be an internal zone of a predetermined building.

As a result of the determination, if the calling terminal 150 is not located in the free call area, the call providing system 100 sequentially proceeds to step 215, step 220 and step 225. Of course, it will be obvious that the process of replacing the short number with the actual called number for the call connection should be included. In addition, when the calling terminal 150 is located in the free call area, the call providing system 100 proceeds to step 240 to perform a call connection and call termination process between the calling and receiving terminals 150 and 160.

If the calling terminal 150 is located in the free call area, in step 245, the call providing system 100 extracts the location information of the called terminal 160 using the cell information of the called terminal 160.

In operation 250, the call providing system 100 determines whether the called terminal 160 is located in the free call area by using the extracted location information of the called terminal 160. If it is determined that the destination terminal 160 is not located in the free call area, the call providing system 100 proceeds to step 220 to perform the charging procedure, and then proceeds to step 225 to terminate the call processing procedure. In addition, when the called terminal is located in the free call area, the call providing system 100 does not perform the charging procedure (step 255) and proceeds to step 225 to terminate the call processing procedure.

3 is a diagram illustrating a process of providing a call-based service by a call providing system according to another exemplary embodiment of the present invention.

The same parts as the description of FIG. 2 will not be described in detail, and will be described based on differences. That is, since the process up to step 335 is the same as in FIG. 2, detailed description thereof will be omitted.

In step 335, if it is determined that the calling terminal 150 is located in the free call area, the call providing system 100 proceeds to step 340 to extract the location information of the called terminal 160.

In step 345, if it is determined that the called terminal 160 is not located in the free call area, the call providing system 100 proceeds to step 350 and outputs a pay call connection message to the calling terminal 150, followed by a call processing procedure. Do this. Here, the call providing system 100 may receive an input whether to continue the call processing procedure from the calling terminal.

In addition, when the called terminal 160 is determined to be located in the free call area, the free call service procedure of steps 355, 360, and 325 is performed.

4 is a diagram illustrating a process of determining whether a calling terminal is located in a free call area according to an exemplary embodiment of the present invention.

Referring to FIG. 4, in step 410, the originating exchange 110 receiving the call request from the originating terminal 150 may set the initial intelligent network information to obtain the routing identifier for the intelligent network exchange 130 with the home location register 120. Initial DP) message is sent. Here, the user of the calling terminal 150 is a location-based call service subscriber (hereinafter referred to as an 'intelligent network subscriber'). In addition, if the called number received when the call request from the calling terminal 150 is a preset speed dial number (for example, '1111', '123', etc.), the calling switch 110 is a user of the calling terminal 150 intelligent network It can be determined that the subscriber. For example, when the call exchanger 110 receives the called number '1111' or '# + 1111' when the call request from the caller terminal 150 determines that the user of the caller terminal 150 is an intelligent network subscriber, The home location register 120 may transmit an intelligent network initialization message including a routing identifier request to the intelligent network switch 130. Here, the description of the role of the user authentication, which can be said to be a general function according to the call processing of the home location register 120, is somewhat distanced from the gist of the present invention, and thus the detailed description thereof will be omitted.

In step 420, the home location register 120 transmits a connection message to the originating exchange 110 including a routing identifier to the intelligent network exchange 130 and the original calling number of the originating terminal 150.

In step 430, the originating exchange 110 checks the obtained routing identifier and transmits an intelligent network initial message including cell information of the originating terminal 150 to the corresponding intelligent network exchange 130.

In step 440, the intelligent network switch 130 checks whether the calling terminal 150 is located in the free call area by using the cell information of the calling terminal 150.

In operation 450, the intelligent network exchange 130 replaces the received called number (ie, abbreviated number) with the actual called number and transmits it to the calling exchange 110. For example, when the received called number is '# 2222' and the actual called number is 'xxx-xxxx-2222', the intelligent network exchange 130 replaces '# 2222' with 'xxx-xxxx-2222' and then replaces it. The incoming call number is transmitted to the calling exchange 110. In addition, the intelligent network switch 130, in step 460, sends a call processing event report request message (RRBE, Request Report Basic Call Service Model (BCSM) Event) including whether the calling terminal 150 is located in the free call area. Transmit to the exchange 110.

In step 470, the originating exchange 110 determines whether the originating terminal 150 is located in the free call area by using the received message from the home location register 120. As a result of the determination, when the calling terminal 150 is located in the free call area, the process of FIG. 5 is performed. When the calling terminal 150 is not located in the free call area, the process of FIG. 6 is performed.

5 is a diagram illustrating a call processing process when the calling terminal is located in a free call area according to an exemplary embodiment of the present invention.

Referring to FIG. 5, in step 505, the calling exchange 110, which determines that the calling terminal 150 is located in the free calling area, sets the free calling area field to ON, and the called number routing information request message (SRI, Send). Routing Info) to the home location register 120.

In step 510, the home location register 120 confirms that the free call area field is set to ON, and then requests the called party location information to the destination exchange 140 to check the current cell information of the called terminal 160. Send a message (PSI, Provide Subscriber info).

In step 515, the destination exchange 140 transmits the final cell information of the destination terminal 160 to the home location register 120 through the PSI response message.

In operation 520, the home location register 120 transmits a roaming number providing message (PRN) including cell information of the received called terminal 160 to the called exchange 140.

In step 525, the destination exchange 140 transmits a response message corresponding to the roaming number provision message including the cell information of the destination terminal 160 to the home location register 120.

In step 530, the home location register 120 transmits the called party routing information including the cell information of the called terminal 160 to the calling exchange 110.

In step 535, the originating exchange 110 transmits an initial request message (IAM) to the called exchange 140 using the received called party routing information.

In step 540, the normal call proceeds after the answer of the called terminal 160 received the channel designation from the called exchange 140. Here, the process in which the destination terminal 160 receives the channel designation from the destination exchange 140 is obvious to those skilled in the art, and thus detailed description thereof will be omitted.

In step 545, when the call between the originating and terminating terminals 150 and 160 ends, the originating exchange 110 includes the cell information of the terminating terminal 160 in a call processing event report message (ERB) indicating that the call has ended. Transmission to the intelligent network switch 130.

In step 550, the intelligent network switch 130 checks the cell information of the called terminal 160 to determine whether the called terminal 160 is located in the free call area. As a result of determination, when the called terminal 160 is located in the free call area, the process proceeds to step 555 and the intelligent network switch 130 generates a non-billing message and transmits it to the calling switch 110. In addition, if the destination terminal 160 is not located in the free call area, the intelligent network switch 130 generates a charging message and transmits the generated charge message to the calling switch 110 in step 560. Here, although step 550 is shown after the end of the call, this is only one embodiment according to the present invention, step 550 may be performed before call setup. In addition, although not shown in FIG. 5, when the called terminal 160 is located in the free call area only for a certain time due to the position movement, the intelligent network switch 130 counts only the time located in the free call area to leave the free call area. Only charging messages corresponding to one hour may be sent to the originating exchange 110. In addition, the intelligent network switch 130 may transmit the billing or non-billing message to the originating switch 110 in consideration of only the final position of the called terminal 160.

In step 565, the originating exchange 110 performs the charging process of the originating terminal 150 and then ends the corresponding call processing procedure. Although not shown in FIG. 5, the billing process may be processed by a separate billing server connected to the originating exchange 110, or may be directly processed by the originating exchange 110. In addition, it will be apparent that the originating exchange 110 does not perform the charging process when the non-billing message is received. However, since the charging process is somewhat distanced from the gist of the present invention, a detailed description thereof will be omitted.

6 is a view showing a call processing process when the calling terminal is not located in the free call zone according to an embodiment of the present invention.

Referring to FIG. 6, in step 610, the calling exchange 110, which determines that the calling terminal 150 is not located in the free calling area, sets the free calling area field to off, and the called party routing information request message (SRI). , Send Routing Info) to the home location register 120. Here, originating exchange 110 will send the same SRI to home location register 120 as normal call processing.

In operation 620, the home location register 120 transmits a roaming number providing message (PRN) to the destination exchange 140.

In step 630, the destination exchange 140 transmits a response message to the home location register 120 in correspondence with the received roaming number provision message.

In step 640, the home location register 120 generates the called party routing information and transmits it to the originating exchange 110.

In step 650, the originating exchange 110 transmits an initial request message (IAM) to the called exchange 140 using the received called routing information.

In step 660, the normal call proceeds after the answer of the called terminal 160 received the channel designation from the called exchange 140. Here, the process in which the destination terminal 160 receives the channel designation from the destination exchange 140 is obvious to those skilled in the art, and thus detailed description thereof will be omitted.

In step 670, when the call between the originating and terminating terminals 150 and 160 ends, the originating exchange 110 includes the cell information of the terminating terminal 160 in a call processing event report message (ERB) indicating that the call has ended. Transmission to the intelligent network switch 130.

In step 680, the intelligent network exchange 130 transmits the charging message to the originating exchange 110.

In step 690, the originating exchange 110 receiving the charging message proceeds with the charging process of the calling terminal 150 and ends the corresponding call processing procedure.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, the system and method for providing a location-based call service according to the present invention can provide a location-based call service with only a simple upgrade of an existing communication system without adding a separate communication device. It works.

In addition, the present invention has an effect that the caller terminal user can provide a location-based call service that can be connected to the caller terminal set in advance only by the input of a simple shortcut number when the caller ID input.

In addition, the present invention has the effect of providing a location-based call service when the destination terminal is located in the free call area.

In addition, the present invention has the effect of providing a location-based call service that can automatically connect to the pay call through the guide message when the destination terminal is located outside the free call area.

Claims (10)

Claims [1] A method of providing a location-based call service by a call providing system connected to a terminal through a communication network. (a) determining whether the called number received from the calling terminal is a preset number when there is a call setting request from the calling terminal; (b) if the called number is a preset number, determining whether the called terminal is located in a preset region by extracting location information of the called terminal corresponding to the called number; (c) if the called terminal is not located in a preset area, replacing the preset number with an actual called number of the called terminal to connect a call between the calling terminal and the called terminal; How to provide call service. The method of claim 1, The step (c) comprises the step of outputting a call connection message to the calling terminal. The method of claim 1, And the called number received from the calling terminal is a number used within the preset area. The method of claim 1, And the communication network is a wideband code division multiple access (WCDMA) network. In the recording medium recording a program that can be read by the call providing system is implemented programmatically implemented by the call providing system to perform a method for providing a call service, (a) determining whether the called number received from the calling terminal is a preset number when there is a call setting request from the calling terminal; (b) if the called number is a preset number, determining whether the called terminal is located in a preset region by extracting location information of the called terminal corresponding to the called number; (c) if the called terminal is not located in a preset area, recording a program for replacing the preset number with an actual called number of the called terminal to connect a call between the calling terminal and the called terminal; Record carrier. In a call providing system that provides a location-based call service to a terminal connected through a communication network, If there is a call setup request from the calling terminal, if the called number received from the calling terminal is a preset number, a routing identifier is obtained to the intelligent network switch that manages the preset number and the cell information of the calling terminal is set to the intelligent network switch. An originating exchange that transmits a number and connects a call between the calling terminal and the called terminal with an actual called number of the called terminal with the preset number substituted if the called terminal is not located in a preset area; A home location register which receives the called party routing information request message of the calling exchange and transmits called party routing information including cell information of the called terminal to the calling exchange when the calling terminal is located in the preset area; And It is determined whether the originating terminal is located in a preset area by using the cell information of the originating terminal received from the originating exchange, and transmits the location information of the originating terminal to the originating exchange, and receives the advance received from the originating exchange. And a smart network exchanger which transmits the set number to an actual exchange number of the called terminal and transmits it to the calling exchange. The method of claim 6, And the routing identifier to the intelligent network switch is received by requesting the home location register. The method of claim 6, And the called number is a number used within the preset area. The method of claim 6, And the intelligent network switch transmits a charging message to the originating exchange if the called terminal is not located in the preset area. The method of claim 6, The communication network is a WCDMA (Wideband Code Division Multiple Access) network.

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