KR100413220B1 - Cdma terminal capable of accepting gsm sim and setting additional service and method thereof, and roaming service system for providing the same service - Google Patents

Abstract

The present invention relates to a GSM SIM-accepting CDMA terminal capable of setting additional services by a menu method, a method of setting additional services by a menu method, and a roaming service system that provides a menu-based additional service setting service. The CDMA terminal is connected to the GSM system through IRGS (International Roaming Gateway System), which performs signal conversion so that the signals can be exchanged between the systems. A GSM SIM accommodating CDMA terminal capable of setting an additional service in the GSM system, comprising: a GSM additional service information storage unit storing a feature code corresponding to a standard setting value corresponding to an additional service provided in the GSM system; And extracting, from the GSM supplementary service information storage unit, a feature code corresponding to the supplementary service setting in the GSM system input from the user through a menu method, and transmitting the feature code to the GSM system through the CDMA system and IRGS. And a control unit for requesting additional service setting of and displaying a response result of the additional service setting request from the GSM system through the IRGS and CDMA systems. According to the present invention, since the additional service can be set using a menu method, which is a user-friendly interface, it is very convenient to use the additional service of the GSM service subscriber using the roaming service using the CDMA terminal 150 capable of accommodating GSM SIM. Become.

Description

GSM SIM accommodating CDMA terminal capable of setting additional services by a menu method and a setting method thereof, and a roaming service system providing the service. THE SAME SERVICE}

The present invention relates to a Code Division Multiple Access (CDMA) terminal capable of accommodating a Global System for Mobile communications (GSM) Subscriber Identity Module (SIM). In particular, the present invention relates to a CDMA terminal and a menu capable of accommodating a GSM SIM capable of setting additional services by a menu method. It relates to an additional service setting method using a method, and a roaming service system for providing an additional service setting service using a menu method.

Recently, with the rapid increase in the demand for mobile communication, the demand for global roaming that can be called with a single number anywhere in the world is increasing.

If a current GSM service subscriber enters Korea and wants to receive CDMA service, he or she should rent a new terminal from an immigration airport lounge or a mobile communication agency and use a new subscriber number instead of his own number.

In particular, in the GSM method, a SIM card containing a subscriber profile is mounted on a terminal. In the mobile communication using the SIM card, any country that provides a GSM type service can borrow a terminal accommodating the SIM and attach its SIM card to the terminal to use its own number. However, in Korea, which provides a CDMA type of service different from the GSM type, there is a problem that GSM subscribers cannot use their own numbers using their SIM cards.

In order to solve this problem, a CDMA terminal capable of roaming, that is, a GSM SIM accommodating CDMA terminal, has been developed by using a GSM SIM card and using a CDMA network.

Therefore, when a GSM service subscriber uses a CDMA terminal capable of accommodating the GSM SIM even in a CDMA service area, a call can be made with a counterpart not only in the CDMA service area but also in the GSM service area by attaching his SIM card.

On the other hand, since a method of using an additional service such as call forwarding or call waiting is different in a CDMA network and a GSM network, users must input a feature code designated by the service provider to use the additional service. However, since the feature codes of the CDMA network and the GSM network are different, there is a problem that a user who uses a roaming service from the CDMA network to the GSM network using a CDMA terminal capable of accommodating GSM SIM cannot use the additional service.

Accordingly, an object of the present invention is to solve the above-mentioned problems. In the CDMA terminal capable of accommodating GSM SIM by allowing the additional service related setting to be performed in a menu manner and corresponding GSM feature codes to the set additional service, The present invention provides a CDMA terminal capable of accommodating GSM SIM capable of using an additional service of a network, a method of setting an additional service by a menu method, and a roaming service system that provides an additional service setting service by a menu method.

1 is a schematic diagram of a roaming service system using a GSM SIM-accepting CDMA terminal capable of setting additional services by a menu method according to an embodiment of the present invention.

2 is a block diagram of a GSM SIM accommodating CDMA terminal capable of setting an additional service by a menu method according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a method of setting an additional service by a menu method in a CDMA terminal capable of accommodating GSM SIM according to an embodiment of the present invention.

4 is a flowchart illustrating a method for configuring an additional service in a GSM system through a CDMA system and an IRGS by a CDMA terminal capable of accommodating GSM SIM according to an embodiment of the present invention.

GSM SIM accommodating CDMA terminal capable of setting additional services by a menu method according to a feature of the present invention for achieving the above object,

The GSM system is connected to a GSM system through an IRGS (International Roaming Gateway System), which performs signal conversion so that signal exchange between systems is performed, and in conjunction with a CDMA system providing roaming service for subscribers of the GSM service. A GSM SIM accommodating CDMA terminal capable of setting an additional service in

A GSM supplementary service information storage unit storing a feature code that is a standard setting value corresponding to the supplementary service provided by the GSM system; And extracting, from the GSM supplementary service information storage unit, a feature code corresponding to the supplementary service setting in the GSM system input from the user through a menu method, and transmitting the feature code to the GSM system through the CDMA system and IRGS. And a control unit for requesting additional service setting of and displaying a response result of the additional service setting request from the GSM system through the IRGS and CDMA systems.

A GSM SIM accommodating CDMA terminal capable of setting the menu type additional service includes: a wireless transceiver for performing wireless communication with a CDMA system under control of the controller; A display unit which outputs a text or an image indicating a user's operation state of a CDMA terminal capable of accommodating the GSM SIM so as to be viewed by a control of the controller; A keypad for receiving a key input signal from a user and transferring the received key input signal to the controller; And a data storage unit including the GSM additional service information storage unit and storing data necessary for controlling the CDMA terminal capable of accommodating the GSM SIM.

The feature code related transmission is performed by CDMA data burst message transmission.

According to another aspect of the present invention, there is provided a method of setting an additional service by a menu method in a CDMA terminal capable of accommodating GSM SIM.

The GSM system is connected to a GSM system through an IRGS (International Roaming Gateway System), which performs signal conversion so that signal exchange between systems is performed, and in conjunction with a CDMA system providing roaming service for subscribers of the GSM service. A method of setting an additional service in the GSM system by a menu method by a CDMA terminal capable of accommodating GSM SIM capable of setting an additional service in

a) displaying an additional service setting menu in the GSM system; b) receiving a setting for a specific supplementary service from the GSM service subscriber through the displayed supplementary service setting menu; c) requesting additional service setting by transmitting a feature code which is a standard setting value of the GSM system corresponding to the input specific additional service setting to the GSM system through the CDMA system and IRGS; d) receiving a response sent from the GSM system via the IRGS and CDMA system to the request; And e) processing the received response.

Step b) may include displaying a setting state of the specific additional service; Determining whether the displayed setting state is the same as a state to be set by the GSM service subscriber; And receiving a setting input from the GSM service subscriber when it is determined that the displayed setting state is different from a state to be set by the GSM service subscriber.

The step e) includes the step of displaying the set additional service status when the response result determines that the requested additional service setting is successfully completed; And if it is determined that the response result has failed to set the requested additional service, displaying the result.

According to still another aspect of the present invention, there is provided a GSM SIM accommodating CDMA terminal capable of setting an additional service by a menu method.

The GSM system is connected to a GSM system through an IRGS (International Roaming Gateway System), which performs signal conversion so that signal exchange between systems is performed, and in conjunction with a CDMA system providing roaming service for subscribers of the GSM service. A GSM SIM accommodating CDMA terminal capable of setting an additional service in

A GSM supplementary service information storage unit storing an appointment code previously promised with the IRGS so as to correspond to the supplementary service provided by the GSM system; And extracting, from the GSM supplementary service information storage unit, an appointment code corresponding to the supplementary service setting in the GSM system input from the user through a menu method, and transmitting the appointment code to the IRGS through the CDMA system. And a controller for requesting setting and displaying a response result of the additional service setting request from the GSM system through the IRGS.

Roaming service system for providing a menu-type additional service setting service according to another aspect of the present invention,

A GSM supplementary service information storage unit for performing signal conversion to exchange signals between systems, and storing feature codes, which are standard setting values corresponding to supplementary services provided by the GSM system, and appointment codes corresponding to the supplementary services, are stored. IRGS (International Roaming Gateway System) comprising; And a CDMA system connected to a GSM system via the IRGS to provide a roaming service for a CDMA terminal capable of accommodating GSM SIM, wherein the IRGS is added from the GSM system transmitted from the CDMA terminal capable of accommodating the GSM SIM. When a service related appointment code is received, a feature code corresponding to the appointment code is transmitted to the GSM system to request the additional service setting, and a response of the GSM system to the requested additional service setting is transmitted through the CDMA system. Characterized in that the transmission to the CDMA terminal capable of accommodating the GSM SIM.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a roaming service system using a GSM SIM-accepting CDMA terminal capable of setting additional services by a menu method according to an embodiment of the present invention.

As shown in FIG. 1, a roaming service system using a GSM SIM-accepting CDMA terminal capable of setting an additional service by a menu method according to an embodiment of the present invention includes a CDMA system 100, a GSM system 200, and a CMDA system. It includes an IRGS (International Roaming Gateway System, 300) for connecting between the 100 and the GSM system 200.

Here, the CDMA system 100 is connected to the CDMA network 110 and is connected to the Home Location Register (HLR) 120, which stores the subscriber's location information and service information, and the CDMA network 110. (Mobile Switching Center, 130), and the base station system (BSS) 140 connected to the MSC 130 and responsible for the interface function between the wired network and the CMDA terminal 150 that can accommodate the GSM SIM.

In the CDMA system 100, a plurality of HLRs 120 and MSCs 130 are provided, and they are linked to each other to perform subscriber management and call exchange functions.

Several MSCs 130 may be connected to one HLR 120, and a plurality of BSSs 140 may be connected to one MSC 130. In addition, the component may include an authentication center performing an authentication function of the terminal, a VLR (Visit Location Register (not shown)) mainly located inside the MSC 130 and storing the visitor's information.

On the other hand, the GSM system 200 is connected to the GSM network 210 and the GMSC (Gateway MSC) 220 for controlling calls between different networks, and the GMSC 220, and the subscriber's location information and service information, etc. HLR 220 for storing. Here, the GSM system 200 also includes a BSS, an authentication center, and the like like the CDMA 100 system, but the detailed description is omitted since it is not used in the embodiment of the present invention.

The IRGS 300 is connected between the CDMA network 110 and the GSM network 210 and performs signal conversion so that signal exchange between the two networks 110 and 210 can be performed.

The IRGS 300 manages the profile of the GSM SIM subscriber by serving as a function of HLR in the CDMA system 100, and serves as a VLR in the GSM system 200, so that the GSM system 200 roams. The location of the GSM SIM subscriber is recognized by the IRGS 300.

Meanwhile, the CDMA terminal 150 capable of accommodating GSM SIM includes a GSM additional service information storage unit 1500 storing additional service related information that can be set in the GSM system 200. The GSM additional service information storage unit 1500 stores types of additional services available in the GSM system 200, feature codes corresponding to GSM standard setting values corresponding to each additional service, and the like. In addition, menu related information for setting the additional service may be stored.

Meanwhile, a separate additional function is required for the GSM SIM accommodating CDMA terminal 150 and the BSS 140 to transmit and receive.

This additional function has a function of using a CDMA data burst message to pass the data and international call identification number required for authentication of a user to the GSM system 200 when registering a roaming subscriber. The use of message transmission over this CDMA databurst channel can accommodate roaming subscribers while minimizing changes to current networks.

Message transmission over the CDMA databurst channel is currently used as a short message transmission. The CDMA databurst message can use any CDMA radio channel, and any channel can transmit and receive data without changing the network.

2 is a block diagram of a GSM SIM accommodating CDMA terminal 150 capable of setting an additional service by a menu method according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the GSM SIM-accepting CDMA terminal 150 capable of setting additional services by a menu method according to an exemplary embodiment of the present invention includes a duplexer 1520, a wireless transceiver 1530, and a controller 1540. , A memory unit 1550, a display unit 1560, a keypad 1570, a SIM interface unit 1580, and a SIM card holder 1590.

The controller 1540 controls the overall operation of the CDMA terminal 150 that can accommodate the GSM SIM according to an embodiment of the present invention.

The duplexer 1520 receives the radio signal received from the BSS 140 through the antenna 1510, outputs the radio signal to the radio transceiver 1530, and outputs the signal output from the radio transceiver 1530 through the antenna 1510. Output

The wireless transceiver 1530 transmits a signal received through the duplexer 1520 to the controller 1540, and outputs a signal output from the controller 1540 to the duplexer 1520.

The controller 1540 analyzes and processes a signal received through the wireless transceiver 1530.

The memory unit 1550 stores a ROM (Read Only Memory: ROM, not shown), various telephone numbers, names, and the like in which a program storing control data necessary for the control unit 1540 to perform overall control. And a non-volatile memory (not shown), and a random access memory (RAM) (not shown) for temporarily storing and processing data generated during the program control.

In addition, the memory unit 1550 includes a GSM supplementary service information storage unit 1500 storing GSM supplementary service setting related information.

The display unit 1560 outputs a character or an image representing various operating states of the CDMA terminal 150 that can accommodate the GSM SIM under the control of the controller 1540 so that a user can view it, and typically a liquid crystal display device (Liquid Crystal). Display). In addition, a menu for setting additional service usage of the GSM system 200 is displayed through the display unit 1560.

The key pad 1570 includes a call key for starting a call to initiate a call, an end key for ending a call, a function key for dialing, and the like, and generates a key input signal corresponding to a key input by a user. Transfer to control unit 1540. In addition, when a menu for using the GSM supplementary service is displayed on the display unit 1560, the user may perform necessary setting and release related supplementary service through the keypad 1570.

When the additional service is set or released by the user, the controller 1540 extracts a feature code corresponding to the additional service setting content from the GSM additional service information storage unit 1500 and transmits the feature code to the CDMA system 100.

Meanwhile, when transmitting the feature code corresponding to the GSM supplementary service through the antenna 1510, the controller 1540 transmits the message using a message transmission through a CDMA data burst channel, and also transmits a specific code transmitted through the CDMA data burst message transmission. Data, for example, response data for setting up and releasing an additional service, and the like.

Hereinafter, a method of setting an additional service by a menu method in a CDMA terminal 150 that can accommodate GSM SIM according to an embodiment of the present invention will be described in detail with reference to FIG. 3.

First, the GSM service subscriber of the GSM system 200 enters the service area of the CDMA system 100 and inserts his SIM card into the SIM card holder 1590 of the CDMA terminal 150 capable of accepting the GSM SIM. If the additional service setting is requested to set or terminate the additional service such as call forwarding or call waiting while using the roaming service at 100 (S100), the controller 1540 may include the GSM additional service information storage unit ( The menu screen stored in the 1500 or the memory unit 1550 is displayed through the display unit 1560 (S110).

Next, when the GSM service subscriber finds and selects an additional service item to be set through the additional service setting screen displayed on the display unit 1560 (S120), the current setting state of the corresponding additional service is displayed (S130).

Thereafter, the GSM service subscriber changes the setting state by using the keypad 1570 when the currently set state is not a desired setting (S140 and S150). For example, in the case of the call forwarding supplementary service, when the current state is 'non-forwarding' and the GSM service subscriber wants to use the call forwarding service, the call forwarding service is performed using the arrow on the keypad 1570 or another key. Yes, you can change that state.

On the other hand, when the additional service setting is changed by the GSM service subscriber, the controller 1540 extracts the feature code corresponding to the setting of the corresponding additional service from the GSM additional service information storage unit 1500 and transmits the CDMA data to the CDMA system 100. The burst message is transmitted (S160).

Thereafter, when the response for the corresponding additional service setting is transmitted from the CDMA system 100, the response is received (S170), and the result included therein is displayed on the display unit 1560 (S180). That is, when it is a result of being set to the changed state of the corresponding additional service, the controller 1540 displays the desired setting state on the display unit 1560 so that the user can confirm the change. If it is not set to the state, the control unit 1540 displays a setting state change or setting impossible of the corresponding additional service.

Next, referring to the accompanying FIG. 4, a method of setting an additional service to the GSM system 200 through the CDMA system 100 and the IRGS 300 is performed by the CDMA terminal capable of accommodating the GSM SIM according to the present invention. Explain.

First, a request message that a GSM service subscriber changes or newly sets an additional service setting of the GSM system 200 through a menu method of a terminal 150 capable of accommodating GSM SIM, that is, a feature code that is a GSM standard setting value of the corresponding additional service. Is transmitted to the BSS 140 of the CDMA system 100 via the CDMA data burst message (S200).

The BSS 140 of the CDMA system 100 receives the CDMA data burst message transmitted from the terminal 150 capable of accommodating the GSM SIM and transmits a response to the terminal 150 capable of accommodating the GSM SIM (S202). The received CDMA data burst message is transferred to the MSC 130 of the CDMA system 100 (S204).

Meanwhile, the MSC 130 of the CDMA system 100 recognizes the roaming GSM service subscriber through the transmitted CDMA data burst message and transmits the corresponding CDMA data burst message to the IRGS 300 through the CDMA network 110. (S206).

The IRGS 300 converts the CDMA data burst message received from the MSC 130 of the CDMA system 100 into a GSM message and transmits the converted GSM message to the GMSC 220 of the GSM system 200 through the GSM network 210 (S208). ), The GMSC 220 transfers the setting value of the corresponding additional service recognized through the feature code included in the received GSM message to the HLR 230 of the GSM system 200 (S210).

Meanwhile, the HLR 230 of the GSM system 200 sets the corresponding additional service by using the set value of the corresponding added service, and responds to the GMSC 220 of the GSM system 200 (S212). .

The GMSC 220 of the GSM system 200 receives the response of the additional service setting transmitted from the HLR 230 of the GSM system 200 and transmits it to the IRGS 300 (S214), and the IRGS 300 transmits the response. Is converted into a CDMA data burst message and transmitted to the CDMA terminal 150 capable of accepting GSM SIM through the MSC 130 and the BSS 140 of the CDMA system 100 and the additional service setting result according to the result included in the response. To display (S216, S218, S220).

As described above, the additional service setting may be performed using the CDMA data burst message to minimize the change of the CDMA system 100.

Meanwhile, in the above, the feature code, which is a GSM standard setting value corresponding to the supplementary service, is stored in the CDMA terminal 150 capable of accommodating the GSM SIM. Although the feature code is extracted and transmitted to the GSM system 200 through the CDMA system 100 and the IRGS 300, the technical scope of the present invention is not limited thereto, and the GSM standard setting value corresponding to the additional service is described. Feature code is stored in the IRGS (300), and between the IRGS (300) and the CDMA terminal 150 that can accommodate the GSM SIM, an appointment code for confirming the additional service setting inputted by the GSM service subscriber is preset. Therefore, when the GSM service subscriber enters specific additional service settings, the corresponding code pre-arranged with the IRGS 300 may cause the CDMA system 100. After being transmitted to the IRGS (300) through the conversion to a feature code that is a corresponding GSM standard setting value in the IRGS (300) may be transmitted to the GSM system (200).

In addition, when a GSM service subscriber selects a desired additional service item through a menu screen for setting an additional service of the GSM system 200, it has been described as displaying the current setting state of the corresponding additional service. The scope is not limited thereto, and for example, the current configuration state of the corresponding supplementary service may also be applied to the corresponding feature code from the GSM system 200 through the CDMA system 100 and the IRGS 300 as well as the setting and the release of the supplementary service. Transmit and indicate to the GSM service subscriber through the response. For example, in the case of call forwarding, a GSM service subscriber can select a call forwarding setting, call forwarding release, and call forwarding setting in the additional service menu screen so that the GSM service subscriber can check the current setting state of the additional service. .

Although the present invention has been described with reference to the most practical and preferred embodiments, the present invention is not limited to the above disclosed embodiments, but also includes various modifications and equivalents within the scope of the following claims.

According to the present invention, since the additional service can be set using a menu method, which is a user-friendly interface, it is very convenient to use the additional service of the GSM service subscriber using the roaming service using the CDMA terminal 150 capable of accommodating GSM SIM. Become.

In addition, by using the menu method and the data burst message method simultaneously, the setting state can be known in addition to setting and canceling the additional service.

In addition, since the additional service configuration is performed using the data burst message, changes in the existing network configuration can be minimized.

Claims (13)

The GSM system is connected to a GSM system through an IRGS (International Roaming Gateway System), which performs signal conversion so that signal exchange between systems is performed, and in conjunction with a CDMA system providing roaming service for subscribers of the GSM service. A GSM SIM accommodating CDMA terminal capable of setting an additional service in A GSM supplementary service information storage unit storing a feature code that is a standard setting value corresponding to the supplementary service provided by the GSM system; And The feature code corresponding to the additional service setting in the GSM system input from the user through a menu method is extracted from the GSM additional service information storage unit and transmitted to the GSM system through the CDMA system and IRGS. A control unit for requesting additional service setting and displaying a response result of the additional service setting request from the GSM system through the IRGS and CDMA systems; GSM SIM accommodating CDMA terminal capable of setting additional services by a menu method including a. The method of claim 1, A wireless transceiver for performing wireless communication with a CDMA system under control of the controller; A display unit which outputs a text or an image indicating a user's operation state of a CDMA terminal capable of accommodating the GSM SIM so as to be viewed by a control of the controller; A keypad for receiving a key input signal from a user and transferring the received key input signal to the controller; And A data storage unit including the GSM additional service information storage unit and storing data necessary for controlling the CDMA terminal capable of accommodating the GSM SIM; GSM SIM accommodating CDMA terminal capable of setting a menu-based additional service further comprising. The method of claim 1, And the additional service setting related menu is stored in the GSM additional service information storage unit. The method according to claim 1 or 4, And the feature code-related transmission is performed by transmitting a CDMA data burst message. The GSM system is connected to a GSM system through an IRGS (International Roaming Gateway System), which performs signal conversion so that signal exchange between systems is performed, and in conjunction with a CDMA system providing roaming service for subscribers of the GSM service. In the method for setting the additional service in the GSM system by the menu method CDMA terminal that can accommodate the GSM SIM capable of setting the additional service in a) displaying an additional service setting menu in the GSM system; b) receiving a setting for a specific supplementary service from the GSM service subscriber through the displayed supplementary service setting menu; c) requesting additional service setting by transmitting a feature code which is a standard setting value of the GSM system corresponding to the input specific additional service setting to the GSM system through the CDMA system and IRGS; d) receiving a response sent from the GSM system via the IRGS and CDMA system to the request; And e) processing the received response Additional service setting method by the menu method in the CDMA terminal that can accommodate the GSM SIM containing. The method of claim 5, And a feature code corresponding to the additional service setting is stored in a specific memory. The method of claim 5, Step b) above Displaying a setting state of the specific additional service; Determining whether the displayed setting state is the same as a state to be set by the GSM service subscriber; And Receiving a setting input from the GSM service subscriber when it is determined that the displayed setting state is different from a state to be set by the GSM service subscriber in the step; Additional service setting method by the menu method in the CDMA terminal that can accommodate the GSM SIM containing. The method of claim 5, Step e) Displaying the set additional service status when the response result determines that the requested additional service setting is satisfactorily completed; And If it is determined that the response result has failed to set the requested additional service, displaying the result. Additional service setting method by the menu method in the CDMA terminal that can accommodate the GSM SIM containing. The method of claim 5, And the feature code related transmission is performed by transmitting a CDMA data burst message. The GSM system is connected to a GSM system through an IRGS (International Roaming Gateway System), which performs signal conversion so that signal exchange between systems is performed, and in conjunction with a CDMA system providing roaming service for subscribers of the GSM service. A GSM SIM accommodating CDMA terminal capable of setting an additional service in A GSM supplementary service information storage unit storing an appointment code previously promised with the IRGS so as to correspond to the supplementary service provided by the GSM system; And Extract the appointment code corresponding to the additional service setting in the GSM system inputted from the user through a menu method from the GSM additional service information storage unit and transmit the appointment code to the IRGS through the CDMA system to set the additional service in the GSM system Requesting and displaying a response result of the additional service setting request from the GSM system through the IRGS. GSM SIM accommodating CDMA terminal capable of setting additional services by a menu method including a. The method of claim 10, And the appointment code-related transmission is performed by transmitting a CDMA data burst message. A GSM supplementary service information storage unit for performing signal conversion to exchange signals between systems, and storing feature codes, which are standard setting values corresponding to supplementary services provided by the GSM system, and appointment codes corresponding to the supplementary services, are stored. IRGS (International Roaming Gateway System) comprising; And CDMA system that provides roaming service for CDMA terminal that can accommodate GSM SIM by accessing GSM system through IRGS Including; When the IRGS receives an additional service related appointment code in the GSM system transmitted from the CDMA terminal capable of accepting the GSM SIM, the feature code corresponding to the appointment code is transmitted to the GSM system to request the additional service setting. Transmitting a response of the GSM system to the requested additional service setting through the CDMA system to a CDMA terminal capable of accepting the GSM SIM. Roaming service system for providing an additional service setting service of the menu method. The method of claim 12, And the response-related data transmission is performed by transmitting a CDMA data burst message.