WO2010040321A1 - Method and system for triggering the intelligent network services - Google Patents

Abstract

A method and a system for triggering the intelligent network services. The embodiment of the present invention adopts deploying a set of Service Control Points SCPs at the roam location and changing the SCP address of the subscriber information at the Mobile Switch Center of the roam location of the subscriber, so that the call of the subscriber at the roam location can arrive at the SCP of the roam location. And through joining the SCP of the roam location and the SCP of the home location, controlling the subscriber’s call at the SCP of the roam location and deducting the call charge from the SCP of the home location are implemented. The call charge of the international roaming of the subscriber of the intelligent network and the cost of joining the SCP of the home location and the Mobile Switch Center of the roam location are reduced.

Description

 Method and system for triggering intelligent network service This application claims to be submitted to the Chinese Patent Office on October 10, 2008, application number 200810216475. 9 , the invention titled "a method and system for triggering intelligent network service" Chinese patent Priority of the application, the entire contents of which are incorporated herein by reference. Technical field

 The present invention relates to the field of communications technologies, and in particular, to a method and system for triggering an intelligent network service. Background technique

 The prepaid user's prepaid account is a prepaid platform stored in the home. The user's domestic call triggers the prepaid platform. The prepaid platform completes the call control and the real-time deduction of the call fee. There is a technology that requires a mobile switching center (MSC, Mobi le Swi tch Center) to send a call to a prepaid platform at a home location, such as a Service Control Point (SCP), and call control by the SCP of the home location. Charging, because during the call, the signaling between the home SCP and the roaming MSC is an international signaling link and more signaling is transmitted, resulting in high call cost, and roaming MSC and attribution. The ground SCP is docked by signaling, and the docking is difficult. Summary of the invention

 In view of this, the present invention provides a method for triggering an intelligent network service in a roaming manner, and solves the problem of high call cost when an intelligent network user roams internationally.

 A method for triggering an intelligent network service in a roaming manner, including:

 Receiving an inserted user data message sent by the peripheral device, where the user information of the intelligent network user in the inserted user data message includes a roaming service control point SCP address;

Updating the service control point SCP address in the user information of the intelligent network user stored locally to the roaming address SCP address according to the roaming address SCP address; A system for triggering an intelligent network service in a roaming manner, comprising:

 The roaming mobile switching center VMSC is configured to receive an inserted user data message sent by the peripheral device, and the locally stored user of the intelligent network user is stored according to the roaming service control point SCP address included in the user information inserted in the user data message. The service control point SCP address in the information is updated to the roaming SCP address, and the call initiated by the intelligent network user at the roaming place is received, and the call is sent according to the roaming address SCP address included in the user information of the intelligent network user. a roaming SCP; a roaming service control point SCP, configured to receive a call sent by the VMSC, and perform call control on the call;

 a peripheral device, configured to obtain user information of the intelligent network user, and update the service control point SCP address in the user information to the roaming SCP address, and send the inserted user data message including the SCP address as the roaming SCP address to the VMSC;

 A peripheral device, including:

 An acquiring module, configured to obtain user information of an intelligent network user, where the user information includes an SCP address of the service control point of the intelligent network user;

 And an update module, configured to update the home SCP address to the SCP address of the intelligent network user roaming place;

 a sending module, configured to send an insert user data message to the roaming mobile switching center VMSC, where the user information in the inserted user data message includes the roaming SCP address;

 A mobile switching center, including:

 a first receiving module, configured to receive an inserted user data message sent by the peripheral device, where the user information of the intelligent network user in the inserted user data message includes a roaming service control point SCP address, and a second receiving module, configured to receive the smart a call initiated by the network user in the roaming manner; an update module, configured to update the service control point SCP address in the user information of the intelligent network user stored locally to the roaming address SCP address according to the roaming address SCP address;

 A sending module, configured to send a call to the roaming SCP.

The embodiment of the present invention modifies the attribution SCP address included in the acquired user information into a diffuse The SCP address of the tour sends the call initiated by the user at the roaming place to the SCP of the roaming place, and the call control and charging is performed by the SCP of the roaming place, which reduces the calling cost and attribution of the intelligent network user in the international roaming.

The cost of docking the SCP with the roaming MSC. DRAWINGS

 1 is a schematic diagram of a basic process of triggering an intelligent network service method according to an embodiment of the present invention;

 2 is a basic block diagram of a trigger intelligent network service system according to an embodiment of the present invention;

 3 is a basic block diagram of a peripheral device according to an embodiment of the present invention;

 4 is a basic block diagram of a mobile switching center according to an embodiment of the present invention;

 FIG. 5 is a basic composition diagram of a method for triggering an intelligent network service according to an embodiment of the present invention; FIG.

 FIG. 6 is a flowchart of an embodiment of a method for triggering an intelligent network service according to an embodiment of the present invention; FIG. 7 is another basic composition diagram of a method for triggering an intelligent network service according to an embodiment of the present invention; The process of triggering another embodiment of the intelligent network service method;

 FIG. 9 is a flowchart of still another embodiment of a method for triggering an intelligent network service in a roaming manner according to an embodiment of the present invention. detailed description

 The content of the present invention will be specifically described below in conjunction with the accompanying drawings and specific embodiments.

 The basic process of the method for triggering the intelligent network service in the embodiment of the present invention may refer to FIG. 1, which mainly includes the following steps:

 Al, receiving an insert user data message sent by the peripheral device, where the user information of the intelligent network user in the inserted user data message includes a roaming service control point SCP address;

 The peripherals here can be used to monitor Moni tor devices or forward Transfer devices.

When the peripheral device is a Moni tor device, the Moni tor device acquires the roaming service control point. And sending an insert user data message to the mobile switching center VMSC (VMSC, Visited Mobile Switching Center), the specific steps include: after the user arrives at the roaming place, register with the mobile switching center (VMSC, Visited Mobile Switching Center) of the roaming area, VMSC The location update Update Location signaling is sent to the Home Location Register (HLR) to obtain user information. After receiving the Update Locat ion signaling, the HLR passes the International Signaling Transfer Point (ISTP, International Signaling Transfer Point). , ) Sending Insert User Data (ISD) signaling to the VMSC to send the user information to the VMSC. Since the Monitor device is connected to the ISTP of the roaming station, the Monitor device detects the ISD signaling and records the user related information. The Moni tor device sends the ISD signaling to the VMSC to enable the VMSC to control the service in the user information of the intelligent network user stored locally, because the address of the service control point (SCP) is already stored in the device. The point SCP address is updated to the roaming SCP address.

 When the peripheral device is a Transfer device, the Transfer device obtains the roaming service control point address, and sends an insert user data message to the VMSC. The specific steps include: after the user arrives at the roaming place, register with the mobile switching center VMSC of the roaming place, and the VMSC passes the international The signaling transfer point ISTP sends Update Location signaling to the home location register HLR to obtain user information. Since the transfer device is connected to the ISTP and the home ISTP of the roaming place respectively, the Transfer device intercepts and forwards the Update Location signaling to After receiving the Update Location signaling, the HLR sends the inserted user information ISD signaling to the VMSC through the international signaling transfer point ISTP to send the user information to the VMSC. The Transfer device intercepts the signaling and updates the SCP address in the signaling. The roaming SCP address is sent to the VMSC, so that the VMSC updates the service control point SCP address in the user information of the intelligent network user stored locally to the roaming SCP address.

 A2. Update the service control point SCP address in the user information of the intelligent network user stored locally to the roaming SCP address according to the SCP address of the roaming place;

A3. Receiving a call initiated by the prepaid subscriber in a roaming manner, and sending the call to the roaming site SCP according to the roaming address SCP address included in the user information of the intelligent network user, so as to Said roaming SCP for call control and charging;

 The user initiates a call, and the call is routed to the user's roaming place VMSC, and the user is determined to subscribe to the intelligent network service, that is, the intelligent network user, and the SCP address in the user information is the roaming address SCP1 address, and the VMSC passes the initial check. The outbound (IDP, Ini tial Detect Po int) signaling is sent to the SCP of the roaming area so that the SCP of the roaming area controls the call and charges.

 The embodiment of the present invention provides a block diagram of a system for triggering an intelligent network service. Referring to FIG. 2, the VMSC 101, the roaming SCP 102, and the peripheral device 103 are included;

 The VMSC 101 is configured to receive the inserted user data message sent by the peripheral device 103, and update the service control point SCP address in the user information of the intelligent network user to roam according to the roaming address SCP102 address included in the user information in the inserted user data message. The SCP102 address, receiving the call initiated by the intelligent network user at the roaming place, and transmitting the call to the roaming place SCP102 according to the address of the roaming address SCP1 02 included in the user information of the intelligent network user;

 The roaming SCP 102 is configured to receive a call initiated by the VMSC 101, perform call control and charging on the call;

 The peripheral device 103 is configured to obtain user information of the intelligent network user and update the SCP address in the user information to the roaming SCP 102 address, and send the inserted user data message including the SCP address to the roaming SCP 102 address to the VMSC 101.

 Further, the roaming SCP 102 is further configured to initiate an authentication request to the home SCP, and receive the home SCP authentication, and send a connection request to the VMSC 101 by using the returned response;

 The VMSC 101 is further configured to receive the connection request and connect the called user.

 Further, the VMSC 101 is further configured to send, to the roaming SCP 102, the call information of the intelligent network user and the called user.

 The roaming SCP 102 is further configured to send a deduction request to the home SCP after completing the call charge calculation according to the call information.

 An embodiment of the present invention provides a peripheral device, as shown in FIG. 3, including:

The obtaining module 201 is configured to acquire user information of an intelligent network user, where the user information includes The intelligent network user belongs to the SCP address;

 There are at least two ways to obtain the information. For example, the first type monitors the inserted user data message ISD signaling through the roaming international signaling transfer point. The ISD signaling includes user information, and after monitoring the I SD signaling. The user information will be obtained, and secondly, the inserted user data message I SD signaling of the destination international signaling transfer point, the peripheral device and the home international signaling transfer point is intercepted, in the I SD signaling Contains user information, and intercepts ISD signaling to obtain user information.

 The update module 202 is configured to update the home location SCP address in the user information acquired by the obtaining module 201 to the SCP address of the intelligent network user roaming place;

 The sending module 203 is configured to send an insert user data message to the VMSC, where the user information inserted in the user data message includes a roaming SCP address.

 There may be at least two ways of obtaining, for example, after acquiring the user information and updating the home address SCP address in the user information to be updated to the SCP address of the intelligent network user, sending a new inserted user data message to the VMSC, the second type After intercepting the inserted user data message, the user information is obtained and the home address SCP address in the user information is updated to be the SCP address of the intelligent network user roaming, and the intercepted inserted user data message is sent to the VMSC.

 An embodiment of the present invention provides a mobile switching center, as shown in FIG. 4, including:

 The first receiving module 301 is configured to receive an inserted user data message sent by the peripheral device, where the user information of the intelligent network user in the inserted user data message includes a roaming SCP address;

 The second receiving module 302 is configured to receive a call initiated by the intelligent network user in a roaming manner, and the updating module 303 is configured to: according to the roaming address SCP address received by the first receiving module 301, the service in the user information of the intelligent network user. The control point SCP address is updated to the roaming address SCP address; the sending module 304 is configured to send the call received by the second receiving module 302 to the roaming site S CP according to the roaming address SCP address.

For a better understanding of the foregoing embodiment, a specific implementation process of the method for triggering the intelligent network service in the roaming manner is taken as an example. The networking is as shown in FIG. 5, and includes the service control point SCP1 deployed in the roaming place, roaming. Mobile switching center VMSC, Moni tor equipment, user A, attribution The service control point SCP2, the home location register HLR, the VMSC and the HLR are connected by the international signaling transfer point ISTP ISTP2, the SCP1 and the SCP2 are connected through the IP network, and the Monitor device is connected to the ISTP1 of the roaming place, where the user A It can be a pre-paid intelligent network user, that is, a prepaid user, or a post-paid user who has signed an intelligent service. Here, the prepaid user is taken as an example. The process is shown in Figure 6. The specific process is as follows:

 601. After the user goes to the roaming place, register with the VMSC/VLR (Visitor Location Register) of the roaming place;

 602. The VMSC/VLR sends a location update Update Location signaling to the HLR.

 The Update Location signaling is used to instruct the HLR to report the user information, and the signaling is forwarded by the ISTP, and after the roaming ISTP1 and the home ISTP2, finally arrive at the HLR;

 603. The HLR sends ISD signaling to the VMSC/VLR. The ISD signaling includes user information, and the signaling is transferred by the home ISTP2 and the roaming ISTP1, and finally reaches the VMSC/VLR.

 604. The monitor device is connected to the roaming site ISTP1. When the ISD signaling passes through the ISTP1, the Monitor device monitors the signaling. The Moni tor device records the user-related information contained in the signaling, and the SCP address in the user information is The address of the home SCP2;

 605. The VMSC/VLR sends a response ISD ACK to the HLR.

 606. The HLR sends an Update Location ACK to the VMSC/VLR.

 607. The Monitor device sends the ISD signaling to the VMSC, and updates the SCP address of the user information in the VMSC to the address of the roaming SCP1.

 608. The VMSC/VLR sends a response ISD ACK to the Monitor device.

 609. When the prepaid subscriber A initiates a call in a roaming manner, the call is routed to the roaming place VMSC of the user A.

 610. The VMSC determines that the user subscribes to the prepaid service, and because the SCP address in the user information saved by the VMSC is the address of the SCP1, the VMSC determines that the user A has signed the SCP1 of the roaming place, and the VMSC sends the call to the roam through the IDP signaling. On SCP1;

611. SCP1 sends a request to the BSCM (Basic Call Service Model, base). This call service model event (RRBE, Request Report BCSM Event), monitors user events;

 612. Roaming place SCP1 finds that the user A is a prepaid user at the home location, and sends an authentication request Auth.Request to the home SCP2.

 613. The home location SCP2 completes the authentication of user A, sends an authentication response to the roaming site SCP1, and notifies the user balance to SCP1;

 614. SCP1 sends an application charging message (AC, Apply Charge) to the VMSC/VLR, and connects the message CONNECT to connect the user to the call;

 615. After the call ends, the VMSC/VLR reports the BSCM Event Report (ECB) and the Application Charge Report (CR), and reports the user's call information to SCP1.

 616. The SCP1 completes the call fee calculation according to the call information, and sends a deduction request Deduct-Request to the home SCP2.

 617, attribution SCP2 deduction fee is successful, send a chargeback response to SCP1 Deduct-Response;

618. Roaming SCP 1 issues a call release request (RC, Release Call), and the call ends. The embodiment of the present invention acquires user information by monitoring signaling of the roaming signaling transfer point, and modifies the home SCP address included in the user information to the roaming address SCP address, and inserts the modified user information into the user data. The message is sent to the roaming SCP, and the roaming SCP performs call control and charging, which reduces the cost of the prepaid subscriber's international roaming call and the cost of the home SCP and the roaming MS C.

For a better understanding of the foregoing embodiment, another specific implementation process of the method for triggering the intelligent network service in a roaming manner is taken as an example. The networking diagram is as shown in FIG. 7, including the roaming service control point SCP1, roaming place. The mobile switching center VMSC, the Transfer forwarding device, the user A, the home service control point SCP2, the home location register HLR, the VMSC and the HLR are connected by the international signaling transfer point ISTP1 and ISTP2, and the SCP1 and the SCP2 are connected through the IP network. The transfer device may be disposed between the ISTP1 of the roaming place and the ISTP2 of the home location, or may be set between the ISTP and the VMSC of the roaming place, and may also be disposed between the home station ISTP and the HLR to intercept the HLR. The location of the VMSC signaling is returned. Here, the user A can be a prepaid electronic network subscriber, that is, a prepaid subscriber, or a postpaid subscriber who has signed an intelligent service. The prepaid subscriber is taken as an example. The process diagram is shown in Figure 8. The specific process is as follows:

 801. After the user goes to the roaming place, register with the VMSC/VLR of the roaming place;

 802. The VMSC/VLR sends a location update Update Locat ion signaling to the HLR.

 The Update Locat ion signaling is used to instruct the HLR to report user information. The signaling is forwarded by ISTP, and after roaming the ISTP1, the Transfer device, and the home ISTP2, and finally reaching the HLR.

 803. The HLR sends ISD signaling to the VMSC/VLR, where the ISD signaling includes user information, and the signaling is transferred by the home ISTP2 and the roaming ISTP1, and finally reaches the VMSC/VLR.

 804. Because the transfer device is connected between the ISTP1 and the home ISTP2, the t ransfer device intercepts the signaling, and changes the SCP address in the user information to the roaming site SCP1.

 805. The VMSC/VLR sends a response ISD ACK to the HLR.

 806. The HLR sends an Update Locat ACK to the VMSC/VLR.

 807, when the prepaid user A initiates a call in a roaming manner, the call is routed to the roaming place VMSC of the user A;

 808. The VMSC determines that the user subscribes to the prepaid service, and because the SCP address in the user information saved by the VMSC is the address of the SCP1, the VMSC determines that the user A has signed the SCP1 of the roaming place, and the VMSC 4 call is sent by IDP signaling. Roaming on SCP1;

 809. The SCP1 sends a request to the BSCM (Baicic Call Service Model Event (RRBE) to monitor user events;

810. The roaming site SCP1 finds that the user A is a prepaid user at the home location, and sends an authentication request Auth.Reques t to the home SCP2.

 811. The home location SCP2 completes the authentication of user A, sends an authentication response to the roaming site SCP1, and notifies the user balance to SCP1;

812. SCP1 sends an application charging message (AC, Apply Charge) to the VMSC/VLR, and connects the message CONNECT to connect the user to the call; 813. After the call is over, 3⁄4«( /¥1^ reports the BSRP Event Report (ERB) and the Application Charge Repor (ACR), and reports the user's call information to SCP1;

 814. The SCP1 completes the call fee calculation according to the call information, and sends a deduction request Deduct-Reques t to the home SCP2;

 815, attribution SCP2 deduction fee is successful, send a chargeback response to SCP1 Deduct-Response;

816. Roaming SCP1 issues a call release request (RC, Release Ca l l), and the call ends. For a better understanding of the foregoing embodiment, a specific implementation process of the method for triggering the intelligent network service in the roaming manner is taken as an example. The networking is as shown in FIG. 5, and includes the service control point SCP1 deployed in the roaming place, roaming. The mobile switching center VMSC, the Moni tor device, the user A, the home service control point SCP2, the home location register HLR, the VMSC and the HLR are connected by the international signaling transfer point ISTP ISTP2, and the SCP1 and the SCP2 are connected through the IP network. The Moni tor device is connected to the ISTP1 of the roaming place. Here, the user A can be a prepaid electronic network user, that is, a prepaid user, or a postpaid user who has signed an intelligent service. Here, the smart service is signed. The post-paid user is described as an example. The flow diagram is shown in Figure 9. The specific process is as follows: 901. After the user goes to the roaming place, register the VMSC/VLR to the roaming place;

 902. The VMSC/VLR sends a location update Update Locat ion signaling to the HLR.

 The Update Locat ion signaling is used to instruct the HLR to report user information. The signaling is forwarded by ISTP, and after roaming the ISTP1 and the home ISTP2, and finally reaching the HLR.

 903. The HLR sends ISD signaling to the VMSC/VLR. The ISD signaling includes user information, and the signaling is transferred by the home ISTP2 and the roaming ISTP1, and finally reaches the VMSC/VLR.

 904. Since the Moni tor device is connected to the roaming site ISTP1, when the ISD signaling passes through the I STP1, the Moni tor device monitors the signaling, and the Moni tor device records the user-related information included in the signaling, where the user information is The SCP address is the address of the home SCP2;

 905. The VMSC/VLR sends a response ISD ACK to the HLR.

 906. The HLR sends an Update Locat ACK to the VMSC/VLR.

907. The Moni tor device sends an ISD signaling to the VMSC, and the SCP of the user information in the VMSC is used. The address is updated to the address of the roaming site SCP1;

 908. The VMSC/VLR sends a response ISD ACK to the Monitor device.

 909. When the post-paid subscriber A initiates the call roaming, the call is routed to the roaming place VMSC of the user A;

 910. The VMSC determines that the user subscribes to the post-paid service, and because the SCP address in the user information saved by the VMSC is the address of the SCP1, the VMSC determines that the user A has signed the SCP1 of the roaming place, and the VMSC 4 call is sent by IDP signaling. Roaming on SCP1;

 911. The SCP1 sends a request to the BSCM (Basic Call Service Model) event (RRBE, Request Report BCSM Event) to monitor user events.

 912. Roaming place SCP1 finds that the user A is a post-paid user at the home location, and sends an authentication request Auth.Request to the home SCP2.

 913. The home location SCP2 completes the authentication of user A, and sends an authentication response to the roaming site SCP1.

914. The SCP1 connects the message CONNECT to the VMSC/VLR, and connects the user to the call;

 Optionally, SCP1 sends an application charging message (AC, Apply Charge) to the VMSC/VLR;

915. After the call ends, the VMSC/VLR reports the BSCM Event Report (ERB, Event Report BSCM), and sends the user call information to SCP1.

 When the VMSC/VLR receives the application charging message (AC, Apply Charge) sent by the SCP1, the VMSC/VLR reports the ACR (Applied Charge Report) to the SCP1;

916. The SCP 1 at the roaming place issues a release call request (RC, Release Call), and the call ends. Alternatively, the Monitor device is replaced with a transfer device, and the transfer device is connected between the roaming site ISTP1 and the home site ISTP2. The fourth step is correspondingly modified as: "Because the transfer device is connected between the roaming site ISTP1 and the home site ISTP2, The transfer device intercepts the signaling, changes the SCP address in the user information to the roaming site SCP2, and, at the same time, the seventh step "the monitor device sends the ISD signaling to the VMSC, and updates the SCP address of the user information in the VMSC to the roaming place. SCP1 The address "and the 8th step" VMSC/VLR sends a response I SD ACK" to the Moni tor device.

 The embodiment of the present invention obtains user information by intercepting signaling through the roaming signaling transfer point, and modifies the home SCP address included in the user information to the roaming address SCP address, and inserts the modified user information into the user data. The message is sent to the roaming SCP, and the call control by the roaming SCP reduces the call cost of the intelligent network user in international roaming and the cost of the home SCP to connect with the roaming MSC.

 A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware. The program can be stored in a computer readable storage medium. The storage medium can include: R0M, RAM, disk or CD, etc.

 The foregoing description of the method and system for triggering the intelligent network service in the roaming manner is only used to help understand the method and the core idea of the present invention. Meanwhile, for those of ordinary skill in the art, The present invention is not limited by the scope of the present invention.

Claims

Rights request

A method for triggering an intelligent network service, which is characterized by comprising:

 Receiving an inserted user data message sent by the peripheral device, where the user information of the intelligent network user in the inserted user data message includes a roaming service control point SCP address;

 Updating the service control point SCP address in the user information of the intelligent network user stored locally to the roaming SCP address according to the SCP address of the roaming place;

 Receiving a call initiated by the intelligent network user at the roaming place, and sending the call to the roaming SCP according to the roaming SCP address included in the user information of the intelligent network user, so that the roaming SCP performs call control.

 2. The method according to claim 1, wherein the intelligent network user is a prepaid user.

 3. The method according to claim 1, wherein the inserting user data message sent by the receiving peripheral device comprises:

 The receiving peripheral device monitors the signaling of the international signaling transfer point I STP, obtains the user information of the intelligent network user, and updates the SCP address in the user information to the roaming address SCP address, and sends the inserted user data message. The SCP address included in the user information inserted in the user data message is a roaming SCP address; or,

 The receiving peripheral device intercepts the signaling of the international signaling transfer point I STP, obtains the user information of the intelligent network user, and changes the SCP address in the user information to the roaming address SCP address, and then sends the inserted user data message. The SCP address included in the user information inserted in the user data message is a roaming SCP address.

 The method according to any one of claims 1 to 3, wherein the receiving a call initiated by the intelligent network user in a roaming manner, according to a roaming place SCP included in user information of the intelligent network user Address, sending the call to the roaming site SCP includes:

Receiving a call initiated by the intelligent network user in a roaming manner, according to a user of the intelligent network user The roaming SCP address included in the information determines that the intelligent network user subscribes to the roaming SCP, and sends the call to the roaming SCP according to the roaming SCP address.

 The method according to claim 4, wherein the sending the call to the roaming SCP further comprises:

 Receiving a connection message sent by the SCP to the home SCP and sent through the authentication;

 The call is connected to the called user according to the connection message.

 The method according to claim 5, wherein, when the user of the intelligent network is a prepaid user, the connecting the call to the called user according to the connection message further comprises:

 The call information of the prepaid subscriber and the called subscriber is reported to the roaming SCP, so that the roaming SCP completes the call fee calculation according to the call information, and then sends a deduction request to the home SCP.

 7. A system for triggering an intelligent network service, characterized in that:

 The roaming mobile switching center VMSC is configured to receive an inserted user data message sent by the peripheral device, and the locally stored user of the intelligent network user is stored according to the roaming service control point SCP address included in the user information inserted in the user data message. The service control point SCP address in the information is updated to the roaming SCP address, and the call initiated by the intelligent network user at the roaming place is received, and the call is sent according to the roaming address SCP address included in the user information of the intelligent network user. a roaming SCP; a roaming service control point SCP, configured to receive a call sent by the roaming mobile switching center VMSC, and perform call control on the call;

 The peripheral device is configured to obtain the user information of the intelligent network user and update the SCP address in the user information to the roaming SCP address, and send the inserted user data message including the SCP address as the roaming SCP address to the VMSC.

The system according to claim 7, wherein the roaming location SCP is further configured to initiate an authentication request to the home SCP, and receive the home SCP authentication by returning the response to the location Said VMSC sends a connection request;

 The VMSC is further configured to receive the connection request and connect the called user.

 The system according to claim 8, wherein the VMSC is further configured to report, to the roaming SCP, call information of the intelligent network user and the called user;

 When the intelligent network user is a prepaid user, the roaming SCP is further configured to send a deduction request to the home SCP after completing the call charge calculation according to the call information.

 10. A peripheral device, comprising:

 An acquiring module, configured to obtain user information of an intelligent network user, where the user information includes an SCP address of the service control point of the intelligent network user;

 And an update module, configured to update the home SCP address to the SCP address of the intelligent network user roaming place;

 And a sending module, configured to send an insert user data message to the VMSC, where the user information in the inserted user data message includes the roaming SCP address.

 11. A mobile switching center, characterized in that:

 a first receiving module, configured to receive an inserted user data message sent by the peripheral device, where the user information of the intelligent network user in the inserted user data message includes a roaming service control point SCP address, and a second receiving module, configured to receive the smart a call initiated by the network user in the roaming manner; an update module, configured to update the service control point SCP address in the user information of the intelligent network user stored locally to the roaming address SCP address according to the roaming address SCP address;

 And a sending module, configured to send the call to the roaming SCP according to the roaming SCP address in the locally stored user information of the intelligent network user.