KR20050088693A - The method and system for providing an international call conveniently at a low price by applying wap, http, sip or vm-based applications in mobile - Google Patents

Abstract

1. Field of the Invention

The present invention relates to an international call service system and a service method for providing an international call using a wireless Internet and a mobile communication network on a WAP, HTTP, SIP, or VM-based application of a wireless communication terminal.

2. Technical problem to be solved by the invention

The present invention is to provide a convenient and inexpensive international call using the WAP, HTTP, SIP or VM-based applications that are inherent in the wireless communication terminal.

3. Summary of Solution to Invention

In the international telephone service method for conveniently and inexpensively serving international calls using a wireless Internet or a mobile communication network in a wireless communication terminal, the individual of the wireless communication terminal using a WAP, HTTP, SIP or VM-based application of the wireless communication terminal Requesting international telephone service use by transmitting identification number and counterpart number of international call to DB server through wireless data network; Transmitting the received personal identification number of the wireless communication terminal and the counterpart number of an international call from the DB server to a switchboard (PPS) and causing the wireless communication terminal to request a call as a response signal; The wireless communication terminal receiving a call request from a DB server, calling the switch (PPS) through an access number; Matching the telephone call received from the exchanger with the counterpart number of the international call transmitted from the DB server based on a personal identification number and connecting the telephone call with the counterpart number of the international call to enable international calls; Including, to make international calls convenient and affordable.

Description

International Call Service System and Provisioning an International Call Service System that can provide international calls conveniently and inexpensively by using WAP, HTP, SPI, or WM-based applications in wireless communication terminals. a low price by applying WAP, HTTP, SIP or VM-based applications in Mobile}

The present invention is an inexpensive and convenient way to make international calls using wireless Internet and mobile communication networks in Wireless Application Protocol (WAP), Hyper Text Transfer Protocol (HTTP), Session Initiation Protocol (SIP), or Virtual Machine (VM) -based applications. It relates to an international telephone service method and a service system provided.

In the present invention, the wireless communication terminal is a mobile communication device of all kinds capable of communicating while moving, such as a next generation mobile communication (IMT-2000) terminal, mobile communication terminal, personal mobile communication terminal, personal data communication terminal, frequency common terminal, and smart phone. It is a broad concept including a terminal. However, hereinafter, a mobile communication terminal called a mobile phone will be described as an example for convenience of description.

Conventional international calls have been serviced in three distinct ways. In other words, the first method is to use an international telephone using a conventional telecommunication network, and the telecommunication carriers (for example, Korea Telecom, Dacom, Hanaro Telecom, etc.) are public switched telephone networks (PSTN). The mobile communication network of the mobile communication terminal is to enable the call to each other. In this case, however, the quality of the call can be guaranteed by using the main communication network, and the call can be easily made at any time. However, there is a disadvantage in that the customer who uses the service bears a very high cost.

The second method is to make an international call using a prepaid card. After purchasing a prepaid card, call the access number for using the prepaid card, and prepaid according to the announcement of the automatic response system (ARS). The card number is entered, and the other party's phone number is entered so that the call can be made with the other party. In this case, it is possible to reduce the burden on the communication fee compared to using the conventional backbone communication network. However, the prepaid card must be purchased before using the international call. It is inconvenient that you can use international calls only by connecting and going through a series of complicated procedures.

Third is the method of making international calls using the Internet. The voice signal of the sender side (or receiver side) is compressed and converted into a digital data format suitable for communication and transmitted through the Internet, and the receiver side (or caller side) is received. The decompressed signal is decompressed and converted back into the original voice signal so that the caller and the receiver can talk. The representative one is called VoIP (Voice Over IP) technology. However, in order to use such a communication method, both the sender and the receiver or any one of them must have hardware and software (eg, an Internet phone) capable of internet communication, and in addition, it must be possible to use the internet communication. This is followed by a big restriction.

Accordingly, the present invention has been proposed to solve the problems of the prior art as described above, by using a WAP, HTTP, SIP, or VM-based application which is a function inherent in a mobile communication terminal. If you want to use the cheap international calls immediately, you can eliminate the inconvenience to get discount benefits only by purchasing a prepaid card in advance, and also the DB server effectively The purpose is to solve the inconvenience of using a complicated procedure when using an international telephone with a conventional prepaid card method by managing and controlling. In other words, when the user wants to use an international call in the wireless communication terminal, the user can conveniently and cheaply use the international call service anytime and anywhere as if the user purchases the wireless content for the international call from the DB server without purchasing a prepaid card. It was developed to.

According to an aspect of the present invention for achieving the above object, the present invention provides a wireless communication in the international telephone service method for convenient and inexpensive service of international calls using a wireless Internet or a mobile communication network in a wireless communication terminal, Using the WAP, HTTP, SIP, or VM-based application of the terminal to request an international telephone service use request by transmitting a personal identification number of the wireless communication terminal and the counterpart number of the international telephone to a DB server through a wireless data network; Transmitting the received personal identification number of the wireless communication terminal and the counterpart number of an international call from the DB server to a switchboard (PPS) and causing the wireless communication terminal to request a call as a response signal; The wireless communication terminal receiving a call request from a DB server, calling a switch (PPS) through an access number; Matching the telephone call received from the exchanger with the counterpart number of the international call transmitted from the DB server based on a personal identification number, and making the international call possible by connecting the telephone call to the counterpart number of the international call; It is configured to include, provides an international call service method that can conveniently and cheaply service international calls.

The international telephone service method may be configured to further include a step of allowing a user of the wireless communication terminal to select a payment method when receiving a request for using the international telephone service from the wireless communication terminal.

On the other hand, according to another aspect of the present invention for achieving the above object, the present invention provides an international telephone service system for conveniently and inexpensively serving international calls using a wireless Internet and a mobile communication network in a wireless communication terminal, WAP, It is a terminal that supports the application based on HTTP, SIP or VM. It can request the use of international call service by sending personal identification number and international number of international call to DB server through wireless data network and also response signal from DB server. In response, a wireless communication terminal capable of requesting a telephone call to the exchange; A server for storing and controlling the personal identification number and the counterpart number of the international call of the user of the wireless communication terminal when receiving a request for the use of the international telephone service from the wireless communication terminal, wherein the personal identification number and the counterpart number of the international call are exchanged. On the other hand, the wireless communication terminal includes a DB server for transmitting a response signal; Based on the personal identification number of the wireless communication terminal received from the DB server, the telephone call from the wireless communication terminal is matched with the counterpart number of the international call received from the DB server, and the telephone call is the counterpart number of the international call. An exchange to connect and make international calls; And an international telephone service provider network for connecting an international call made from the exchange to a counterpart number of an international call to an international telephone network through a general telephone switching network (PSTN), wherein the exchange is a personal identification of a wireless communication terminal transmitted from a DB server. By using the number and the counterpart number of the international call, it is configured to make an international call immediately without inputting the other party's number through the ARS connection. to provide.

The international telephone service system is preferably configured to allow the user of the wireless communication terminal to determine a payment method when the DB server receives a request for using the international telephone service from the wireless communication terminal.

Hereinafter, preferred embodiments of an international call service method and an international call service system capable of providing an international call conveniently and inexpensively using a WAP, HTTP, SIP, or VM-based application of the present invention will be described with reference to the accompanying drawings. It explains in detail.

1 is a flowchart illustrating a method of using an international call using an existing prepaid card. As shown in Figure 1, if you want to make international calls using a prepaid card, it is necessary to purchase a prepaid card in advance using a variety of payment methods, such as credit card payment, cash payment, Internet payment (S10) Do. After purchasing the prepaid card, the user accesses the automatic answering system by directly inputting the access number provided on the prepaid card (S12), and selects the desired language according to the announcement of the automatic answering system (S14). Enter your prepaid card number (usually 10 digits, for example XXXX-YYYYYY) (S16). And, after the above procedure, the other party's number (the counterpart number generally consists of country code-area code-station number and number). -YYYY) can be entered (S18) to make international calls. As can be seen from the above, in the existing international calling method of making an international call using a prepaid card, a prepaid card must be purchased in advance to use a discounted international calling service, and a prepaid card can also be used. Even when using, it is necessary to directly input 20 or more numbers including the access number and the prepaid card number, and it can be seen that there was a great inconvenience in using the same.

Figure 2 is a block diagram of an embodiment of the international telephone service system according to the present invention to remove the inconvenience of the existing prepaid card as well as to provide an international telephone service at a lower cost.

As shown in FIG. 2, the international telephone service system to which the present invention is applied includes a wireless communication terminal 20, a DB server 30, a switch 40, and a WAP, HTTP, SIP, or VM-based application. International telephone network connection 50 is included.

The wireless communication terminal 20 is a generic name for all kinds of terminals that can communicate while moving, and the most commonly used mobile phones are currently used. The wireless communication terminal 20 should be capable of data communication based on WAP, HTTP, SIP, etc., or be able to download and execute an application for international calls from the DB server 30 by supporting a virtual machine (VM). . That is, the user of the wireless communication terminal of the present invention selects an international call service menu on a browser providing a wireless Internet service without having to purchase an existing prepaid card or executes a VM-based application on the wireless communication terminal. You can use the telephone service conveniently. Therefore, the user of the wireless communication terminal can request an international call service from the DB server by making a call by inputting a counterpart number to make an international call in a WAP, HTTP, SIP or VM based application of the wireless communication terminal (when such a service request is made). The personal identification number such as the telephone number of the terminal and the counterpart number of the international call are transmitted to the DB server 30 through the wireless data network. In this case, the price is similar to or lower than that of using a prepaid card under the control of the DB server. You can use international calls.

On the other hand, the wireless communication terminal not only can search for the country code and the area code of the other party that the user wants to make international calls, but also based on the country code and area code of the country (and region) where the other party of the international call is located. Can provide information about weather or local time. Furthermore, the cost of using the international telephone service system according to the present invention is provided by the conventional telecommunications service provider so that the user of the wireless communication terminal can confirm the cost saving effect when using the international telephone service according to the present invention. In addition to the cost of using the additional function to display on the LCD window of the wireless communication terminal. For example, it is possible to provide a cost-based service for each country or time zone according to the selection of the user of the wireless communication terminal. On the other hand, by additionally providing a phone book function that can store and manage the counterpart number of the international call mainly used by the user of the wireless communication terminal, when the user of the wireless communication terminal calls the existing telephone number, simply the telephone number By making it possible to search and make a call, you can enhance the convenience of using international calls.

When the DB server 30 receives an international call service request from the wireless communication terminal 20, the DB server 30 determines the payment method, and the personal identification number of the wireless communication terminal user and the wireless. It performs the function of storing and controlling the other party's number of the international call input on the WAP, HTTP, SIP or VM based application of the communication terminal. In addition, when the user of the wireless communication terminal selects the prepaid method, the exchange provides information on the total amount paid to the exchange so that the exchanger can control and manage the international telephone usage of the user of the wireless communication terminal and select the postpaid method. In this case, the postpaid payment information is provided to the exchange to allow the exchange to charge the user's international call usage fee and the international call fee based thereon. As the postpaid payment information, a postpaid payment indication flag may be used, and by setting a postpaid payment as a default value, if the DB server does not provide information on the prepaid total amount to the exchange, it is determined to be postpaid payment. Can be programmed. In addition, when the wireless communication terminal provides additional services such as country code and area code search service, local time and weather search service of the country and region where the other party of the international call is located, or cost-preparation service with the main telecommunications carrier, The DB server should continuously update the information necessary for such an additional service to provide the latest information on the use of the additional service by the user of the wireless communication terminal.

The switch 40 is configured such that the wireless communication terminal 20 receiving the call request as a response signal from the DB server can make a call to a preset access number. In addition, based on the personal identification number of the user of the wireless communication terminal received from the DB server, using the access number to match the international telephone call connected to the telephone exchange with the other party's number of the international call, the international telephone call the other party Call international numbers by dialing a number. That is, the exchange 40, when the personal identification number of the international call received from the wireless communication terminal coincides with the personal identification number received from the DB server, the exchange 40 together with the personal identification number from the DB server. By matching with the other party's number of the transmitted international call, the international call can be connected to the other party's number. In summary, the exchange 40 uses the personal identification number of the wireless communication terminal received from the DB server 30 and the counterpart number of the international call. It allows you to make international and international calls.

The international telephone network connection unit 50 performs a function of connecting the international telephone call from the exchanger 40 to the counterpart number of the international telephone to the international telephone network through the general telephone network (PSTN).

Figure 2a is a detailed configuration example of the DB server 30 shown in FIG.

As shown in FIG. 2A, the DB server 30 includes a personal identification number storage unit 31, a counterpart number storage unit 32, a payment method determination unit 33, a call history storage unit 34, and a billing history. It is comprised by the storage part 35 and the DB server control part 36 which collectively controls the DB server of such a structure. The personal identification number and the other party number transmitted from the wireless communication terminal are stored in the personal identification number storage unit 31 and the other party number storage unit 32, respectively, and exchange the stored information under the control of the DB server control unit 36. It can provide to external devices, such as these. The payment method determination unit 33 determines the payment method by prepaid or postpaid payment according to the user's selection of the wireless communication terminal. In the call history storage unit 34, when the user of the wireless communication terminal makes an international telephone call using the system of the present invention, the call history memory 34 stores the call time and the telephone number of the called party in a database. When the user of the wireless communication terminal requests the provision of information on the call history, the information on the call history may be provided under the control of the DB server. In addition, the billing history storage unit 35 stores the billing details according to the use of the service by the user of the wireless communication terminal. In the case of prepaid payment, the exchange receives and stores the information on the amount of money paid from the total amount paid from the international telephone so far, so that when the user of the wireless terminal requests to check the balance, the information on the balance is provided to the user. can do. In the case of postpaid payment, information about the billing history is received and exchanged from the exchange, and when the bill is later charged to the user of the wireless communication terminal in the form of an information service fee, it can be used as the basis. The DB server control unit 36 controls the function of transmitting the personal identification number and the counterpart number of the international call to the exchange, and also controls the DB server to store and manage information on the billing history and call history at the exchange. .

FIG. 2B is a detailed configuration example of the exchanger 40 shown in FIG.

As shown in Fig. 2B, the switch 40 is composed of a self answering system (ARS) 42, a telephone number matching section 44, a billing management section 46, and an international telephone connection control section 48. . The automatic answering system 42 allows the user of the wireless communication terminal to select the desired language through the announcement, and the telephone number matching section 44 wirelessly based on the personal identification number received from the DB server 30. It performs a function of matching the international telephone call connected from the communication terminal 20 to the automatic answering system 42 with the counterpart number of the international telephone. After such a match, the international telephone connection control unit 48 directly connects the telephone call to the counterpart number of the international call, thereby quickly making an international call without the inconvenience of repeatedly inputting the counterpart number of the international call. Make it available. On the other hand, in the case of prepaid payment, the billing management unit 46 receives information on the total amount prepaid from the DB server, and subtracts the international telephone usage fee according to the international call usage of the user of the wireless communication terminal from the prepaid total amount. If the remaining amount after the deduction becomes less than 0, the international telephone connection control unit stops or blocks the international telephone connection. In addition, in the case of postpaid payment, the international telephone bill is charged according to the international telephone usage of the wireless communication terminal user, and the billing details are transmitted to the DB server 30 and stored in the billing history storage unit 35 of the DB server. To perform the function.

3 is a flowchart illustrating an embodiment of an international call service method according to the present invention.

As shown in FIG. 3, the international call service method according to the present invention inputs a counterpart phone number for international call using a WAP, HTTP, SIP, or VM-based application, such as a telephone number of a user of a wireless communication terminal. By sending to the DB server with a personal identification number to the international call service use request of the present invention (S5). The DB server receiving the request for using the international telephone service transmits the personal identification number and the other party's number received from the wireless communication terminal to the switchboard, while transmitting a response signal to the wireless communication terminal to cause the wireless communication terminal to transmit to the switchboard. In this case, in response to the response signal from the DB server, the wireless communication terminal requests a telephone call to the switch (PPS) through a preset access number (S7). The telephone call received from the wireless communication terminal to the switch and the counterpart number of the international call transmitted from the DB server are matched based on the personal identification number, and the telephone call is connected to the counterpart number of the international call.

Figure 4 is a flow chart illustrating in detail another embodiment of an international call service method according to the present invention.

As shown in Figure 4, another embodiment of the international call service method according to the present invention may have a different process according to the payment method, which will be described in detail as follows.

First, by inputting the other party's desired phone number to make an international call using WAP, HTTP, SIP or VM-based application, and transmits it to the DB server with a personal identification number, such as the user's telephone number of the wireless communication terminal user The service is started (S50). In this case, the DB server allows the user of the wireless communication terminal to determine the payment method (S60), which can be roughly divided into a prepaid payment method and a postpaid payment method.

Hereinafter, the detailed process of the present invention will be described by classifying into a prepaid payment method and a postpaid payment method.

First, when the user of the wireless communication terminal selects a prepaid payment method, the user of the wireless communication terminal must make at least a certain amount by using a credit card payment, Internet micro payment, electronic money payment, mobile phone payment, or check card payment to make an international call. Can be used (S62). When the payment is completed, the DB server transmits the personal identification number of the user of the wireless communication terminal, the information about the total amount prepaid, and the counterpart number of the international call to the exchange, and requests a call as a response signal to the wireless communication terminal. (S68). Then, the wireless communication terminal receiving the call request from the DB server requests the international telephone call to the exchange with a preset ARS access number (S70). Then, the exchange matches the telephone call with the counterpart number of the international call based on the personal identification number, and then connects the telephone call to the counterpart number (S80). However, if the total amount prepaid is deducted according to the international call usage of the user of the wireless communication terminal, if the remaining amount is less than 0 won, the connection of the international call is stopped or blocked (S82).

On the other hand, when the user of the wireless communication terminal selects the postpaid payment method, unlike the prepaid payment method, the user does not need to make a payment before using an international call, and instead of transmitting the prepaid total amount information from the DB server to the exchange, a postpaid payment is made. After payment information to be paid to the exchange is sent to the exchange (S65), and according to the international telephone usage of the user of the wireless communication terminal, the international telephone charges are charged at the exchange, and then the billing details are transmitted to the DB server for storage and management. Based on the billing details, the same process is used except for taking the method of requesting the international telephone fee later in the form of an information fee (S85).

Although the above has been described with reference to a preferred embodiment of the present invention, the present invention is not limited by the above-described embodiment and the accompanying drawings, it is within the scope not departing from the technical spirit of the invention described in the claims below It will be apparent to those skilled in the art that various substitutions, modifications, and alterations are possible. Thus, all changes belonging to the equivalent meaning or scope of the following claims are all rights of the present invention. Make sure you belong to the range.

According to the present invention as described above has the following effects.

First, the present invention can provide an international call service to a wireless communication terminal user at a low price. The conventional wireless communication terminal users have to pay expensive international telephone fees when using international telephones using a main communication service provider rather than using a prepaid card. However, using the international telephone service according to the present invention can reduce the burden on the user of such a wireless communication terminal. In other words, in the international call system of the present invention, anytime, anywhere cheap international calls can be used, as in the WAP, HTTP, SIP or VM-based applications to purchase wireless content for international calls through the DB server. In addition, the present invention, since the distribution cost does not occur at all once the system is built, it can provide a service at a price lower than the price of the international telephone prepaid card that was sold in the conventional Internet or multi-stage sales.

Second, the present invention can conveniently provide an international telephone service to the user of the wireless communication terminal. Conventional international telephone users have generally purchased international prepaid cards in advance in order to reduce the high cost of using a telecommunications carrier and use international telephones through various complicated procedures according to their usage methods. In the case of using such a prepaid card, it is inconvenient to use an international call only by directly inputting at least 20 numbers such as an access number, a prepaid card number, and a counterpart phone number of an international call. However, if the international call service according to the present invention is used, the international call can be conveniently used by inputting only the counterpart number of the international call on a WAP, HTTP, SIP, or VM-based application.

1 is a flowchart illustrating a method of using an international call using an existing prepaid card.

Figure 2 is a block diagram of an embodiment of the international telephone service system according to the present invention to remove the inconvenience of the existing prepaid card as well as to provide an international telephone service at a lower cost.

2A and 2B are detailed configuration examples of the DB server and the switch (PPS) shown in FIG. 2, respectively.

3 is a flowchart illustrating an embodiment of an international call service process according to the present invention.

Figure 4 is a flow chart illustrating in detail another embodiment of an international call service process according to the present invention.

<Description of the symbols for the main parts of the drawings>

20: Wireless communication terminal 30: DB server

40: Switching machine (PPS) 50: International telephone connection

Claims (10)

In the international telephone service method for providing a convenient and inexpensive service for international calls using a wireless Internet or a mobile communication network in a wireless communication terminal, Requesting the use of international telephone service by transmitting a personal identification number of a wireless communication terminal and a counterpart number of an international call to a DB server through a wireless data network using a WAP, HTTP, SIP or VM based application of a wireless communication terminal; Transmitting the received personal identification number of the wireless communication terminal and the counterpart number of an international call from the DB server to a switchboard (PPS) and causing the wireless communication terminal to request a call as a response signal; The wireless communication terminal receiving a call request from a DB server, calling the switch (PPS) through an access number; Matching the telephone call received from the exchanger with the counterpart number of the international call transmitted from the DB server based on a personal identification number and connecting the telephone call with the counterpart number of the international call to enable international calls; International call service method for convenient and cheap service international calls, comprising a. The method of claim 1, further comprising the step of allowing the user of the wireless communication terminal to select a payment method after the step I, when receiving the request for using the international telephone service from the wireless communication terminal. Convenient and affordable international call service. The method of claim 2, wherein when the user of the wireless communication terminal makes a payment in advance, In step II, information about the total amount prepaid in advance is transmitted from the DB server to the exchange, Subsequently to step IV, deducting international telephone service charges from the total amount prepaid according to the international call usage of the user of the wireless communication terminal, and if the remaining amount available during the subtraction step becomes 0 or less, An international call service method for providing a convenient and inexpensive service for international calls, further comprising the step of stopping or blocking the connection of the telephone call. 4. The method of claim 2 or 3, wherein when the user of the wireless communication terminal selects a payment method as a prepaid method, the user of the wireless communication terminal makes credit card payment, Internet micro payment, telephone money payment, mobile phone payment, or check card payment. An international call service method that provides a convenient and inexpensive service for international calls, which is characterized in that the payment can be made using. The method according to claim 2, wherein when the user of the wireless communication terminal selects a payment method as a post-payment method, next to step IV, an international telephone fee is charged at the exchange according to the international telephone usage of the wireless communication terminal user, and the charge details The international telephone service method for convenient and inexpensive service for international calls, further comprising the step of recording the billing details in response to the personal identification number by transmitting to the DB server. In the international telephone service system that provides a convenient and inexpensive service for international calls using a wireless Internet and a mobile communication network in a wireless communication terminal, WAP, HTTP, SIP or VM-based application that supports the application of international call service by sending personal identification number and international call party number to DB server through wireless data network. A wireless communication terminal capable of requesting a telephone call to the exchange in response to the response signal; A server for storing and controlling the personal identification number and the counterpart number of the international call of the user of the wireless communication terminal when receiving a request for the use of the international telephone service from the wireless communication terminal, wherein the personal identification number and the counterpart number of the international call are exchanged. On the other hand, the wireless communication terminal includes a DB server for transmitting a response signal; Based on the personal identification number of the wireless communication terminal received from the DB server, the telephone call from the wireless communication terminal is matched with the counterpart number of the international call received from the DB server, and the telephone call is the counterpart number of the international call. An exchange to connect and make international calls; And It includes an international telephone operator network for connecting an international call from the exchange to the other party of the international call to the international telephone network through a general telephone switching network (PSTN), The exchange can directly make an international call without input of the other party's number of the international call through the ARS connection by using the personal identification number of the wireless communication terminal received from the DB server and the counterpart number of the international call. Convenient and affordable international call service system. The service of claim 6, wherein the DB server allows the user of the wireless communication terminal to determine a payment method when the DB server receives a request for using the international telephone service from the wireless communication terminal. International telephone service system. 8. The method of claim 7, wherein when the user of the wireless communication terminal pays in a prepaid manner, the DB server transmits information about the total amount prepaid to the exchange, and the exchange according to the international call usage of the user of the wireless communication terminal. International telephone service, which is convenient and inexpensive service for international calls, characterized by deducting international telephone service charges from the total amount prepaid, and stopping or blocking the connection of international calls if the remaining amount becomes less than 0 after the deduction. Telephone service system. 10. The method of claim 7 or 8, wherein when the user of the wireless communication terminal selects a payment method as a prepaid method, the user of the wireless communication terminal makes a credit card payment, Internet micro payment, telephone currency payment, mobile phone payment, or check card payment. International telephone service system that provides convenient and affordable service for international calls, which is characterized in that the payment can be made by using. 8. The method of claim 7, wherein when the user of the wireless communication terminal selects a payment method as a postpaid method, the exchange charges an international telephone service fee according to the usage of the international telephone of the user of the wireless communication terminal, and then transfers the charging details to the DB server. And, the DB server is an international telephone service system for convenient and inexpensive service for international calls, characterized in that for recording and managing the billing details corresponding to the personal identification number of the wireless communication terminal.