CN101605311B - Short message routing method and system thereof - Google Patents

Abstract

The present invention discloses a short message routing method and its system, involving the external network short message service center SMSC, the local network SMSC and the local network home location register HLR. When the users of the home network send messages in the short message service process, they are first routed to the SMSC of the home network, so that the HLR can exchange information with the SMSC of the outer network through the SMSC of the home network. The present invention can make the terminal call be processed by the short message service center of the local network when the short message of the external network is finally called to the local network, thereby enabling the called value-added services handled by the local network users in the SMSC of the local network to be processed by the SMSC of the local network Acceptance, so that users of this website can fully enjoy the value-added services they should enjoy.

Description

A short message routing method and system thereof

technical field

The present invention relates to global system for mobile communication (GSM, Global System for Mobile Communications) network (abbreviation G network) short message (short message) communication technology, relate in particular to the method and system thereof of G network short message routing.

Background technique

In the GSM communication network, the short message service center (SMSC, Short Message Service Center) and many other operators realize the short message service (SMS, Short Message Service) intercommunication through No. 7 (No7.) signaling. When the calling number is the belonging user of the SMSC of the external network and the called number is the belonging user of the SMSC of the local network, as shown in Figure 1, the calling process has the following steps:

Step 1: The external network SMSC sends a request for the status information of the current called terminal (MS, Mobile Station) and the information of the mobile switching center (MSC, Mobile Switching Center) to the home location register (HLR, Home Location Register) of this network message SendRoutingInfoSM;

Step 2: the HLR of this network returns the status information of the current called MS and the MSC (ie the MSC of this network) information response to which the called MS belongs to the SMSC of the external network;

Step 3: The external network SMSC initiates a final call message ForwardSM to the local network MSC;

Step 4: The MSC of this network forwards the call termination message to the current called MS;

Step 5: The current called MS returns a call-ending message response;

Step 6: The MSC of the local network returns a final call message response to the SMSC of the external network.

As can be seen from the flow chart in Figure 1, if the calling user belongs to the SMSC of the external network, and the called user belongs to the SMSC of the local network (not shown in Figure 1), then the calling user of the external network calls the SMSC of the local network through the SMSC of the external network. The message sent by the user does not go through the SMSC of the local network, but directly sends it to the called user through the signaling network (that is, the MSC of the local network in Figure 1). Some called value-added services cannot be accepted by this short message service center, and the users of this network will not enjoy the value-added services that they should enjoy and suffer the loss of interests.

Therefore, it is necessary to improve the above-mentioned existing call flow, so that the short message called user of this network can still fully enjoy the value-added service that it should enjoy under the condition that the calling number belongs to the SMSC of the external network.

Contents of the invention

The technical problem to be solved by the present invention is to provide a short message routing method and its system, so that when the short message from the external network ends up in the local network, the users of the local network can fully enjoy the value-added services they should enjoy.

In order to solve the above-mentioned technical problems, the present invention provides a kind of short message routing method, relate to external network short message service center SMSC, this network SMSC and this network home location register HLR, this method comprises: HLR receives by external network SMSC outside When a network user sends a message in the short message service process to a user of the home network, the messages are first routed to the SMSC of the home network, so that the HLR performs information exchange with the SMSC of the outer network through the SMSC of the home network.

further,

The HLR routes the information request message of the called user received from the SMSC of the external network to the SMSC of the local network, and the SMSC of the local network returns the information of the called user obtained from the HLR to the SMSC of the external network, and according to the information of the called user obtained Perform additional business processing with the called value-added service opened by the called user.

Further, the method also involves the mobile switching center MSC of the home network; the information of the called user includes the status information of the called user and the information of the MSC to which the called user belongs; the method also includes:

The external network SMSC sends an end call request message to the MSC to which the called user belongs through the local network SMSC, and receives the end call response message returned by the MSC through the local network SMSC.

further,

The information request message of the called user is received by the short message service routing function entity SMS Router in the SMSC of the local network, and routed to the service processor SC of the SMSC of the local network. In the process of obtaining the information of the calling user, the information of the called user obtained from the HLR is returned to the external network SMSC through the SMSRouter through an information response message.

further,

The SC sends an information request message to the SMS Router to initiate the information acquisition process of the called user on this network. The message carries a first flag to inform the SMS Router that the number of the SMSC carried in the information request message is an external network SMSC number;

After the SC receives the successful response message containing the information of the called user sent by the SMS Router, it will record in the message the MSISDN number of the MSC to which the called user belongs, the international address of the called user. The mobile subscriber identity code IMSI is carried in the response message returned to the SMSRouter, and a second sign is carried in the response message to inform the SMSRouter to replace the MSC address to which the called user belongs with the address of the SMSC;

After receiving the call termination request message forwarded by the SMS Router, the SC sends a call termination message to the SMS Router to initiate the call termination process of the network; the SC receives the information of the called user and the called value-added service opened by the called user. Perform additional business processing.

Further, the HLR routes the short message transmission status report RDS message received from the external network SMSC to the local network SMSC, and obtains and stores the RDS message through the local network SMSC.

Further, a third sign is carried in the end call message to inform the SMS Router to only forward the RDS message sent by the external network SMSC;

The SMS Router routes the RDS message received from the HLR to the SC, and the SC initiates the RDS process of the network according to the RDS message, and forwards the RDS message to the HLR through the SMS Router.

In order to solve the problems of the technologies described above, the invention provides a short message routing system, including this network SMSC and this network home location register HLR, wherein:

HLR, used to route these messages to the SMSC of the local network when receiving messages from the SMSC of the external network during the short message service process from the external network user to the user of the local network, so as to exchange information with the SMSC of the external network through the SMSC of the local network ;

The SMSC of the local network completes the corresponding process of the short message service of the local network according to the routed message.

further,

HLR, the called user's information request message that it receives from the external network SMSC is routed to the local network SMSC;

The SMSC of the local network completes the process of obtaining the called user information of the local network according to the information request message of the called user, and at the same time, performs additional service processing according to the known information of the called user and the called value-added service opened by the called user.

Further, the system also includes the mobile switching center MSC of the home network; the information of the called user includes the status information of the called user and the information of the MSC to which the called user belongs;

The local network SMSC is also used to forward the terminal call request message received from the external network SMSC to the MSC to which the called user belongs, and return the terminal call response message returned by the MSC to the external network SMSC.

Further, the SMSC of this network comprises a short message service routing functional entity SMS Router and a service processor SC, wherein:

SMS Router is used to receive the information request message of the called user and route it to the SC; according to the information request message sent by the SC, the information of the called user obtained from the HLR is returned to the external network SMSC through an information response message; The end call request message received by the network SMSC is routed to the SC;

SC, used to send an information request message to the SMS Router according to the information request message of the called user, thereby initiating the information acquisition process of the called user on this network; after receiving the information response message of the called user returned by the SMS Router, Send an information response message to the SMS Router, thereby ending the information acquisition process of the called user on the local network; after receiving the final call request message routed by the SMS Router, send a final call message to the SMS Router, thereby initiating the final call process of the local network , perform additional service processing according to the acquired information of the called user and the called value-added service opened by the called user.

further,

The SC carries a first flag in the information request message sent, which is used to inform the SMS Router that the number of the SMSC carried in the information request message is the number of the external network SMSC; After a successful response message, the MSISDN number of the MSC to which the called user belongs and the International Mobile Subscriber Identity IMSI of the called user will be recorded in the response message and carried in the response message returned to the SMS Router , and carry a second flag in the response message to inform the SMS Router to replace the MSC address to which the called user belongs with the address of the SMSC; when receiving the failed response message of the called user's information sent by the SMS Router After that, directly return the failed response message to SMS Router.

further,

The terminal call message sent by the SC carries a third sign, which is used to inform the SMS Router to only forward the short message transmission status report RDS message sent by the external network SMSC;

HLR, routes the RDS message received from the SMSC of the external network to the SMSRouter of the SMSC of the local network, and obtains the RDS message through the SMS Router and saves it;

SMS Router, routes the RDS message sent by the HLR to the SC; returns the RDS message forwarded by the SC to the HLR;

SC forwards the routed RDS message to the SMS Router, thus initiating the RDS process of the network.

The short message routing method and system provided by the present invention can enable the HLR to carry out information interaction with the SMSC of the external network through the SMSC of the external network when the external network user performs the short message service to the user of the internal network, and the short message of the external network is terminated. When arriving at this network, can make this terminal call through this network short message service center and handle, thus the called value-added service that this network user handles at this network short message service center can all be accepted by this network short message service center, thereby To enable users of this website to fully enjoy the value-added services they should enjoy.

Description of drawings

Fig. 1 is an existing short message call flowchart;

Fig. 2 is the flow chart of the routing method in the short message end call of the embodiment of the present invention;

Fig. 3 is a flow chart of the status report in the short message terminal call according to the embodiment of the present invention.

Detailed ways

A kind of short message routing method and system provided by the present invention, its inventive idea is, HLR will first route all messages received to this network SMSC, make HLR It is possible to exchange information with the SMSC of the external network through the SMSC of the local network, and enable the SMSC of the external network to initiate the call termination process to the called user of the local network through the SMSC of the local network, so that the SMSC of the local network can The information performs business processing on the value-added service opened by the called number.

The short message routing method in the embodiment of the present invention is embodied in the call flow and status report flow. When HLR receives the message in the process of sending short messages from external network users to local network users by external network SMSC, it first routes the message to local network SMSC, so that HLR can exchange information with external network SMSC through local network SMSC.

Among them, in the call process, HLR first routes the SRI request message received from the SMSC of the external network to the SMSC of the local network for processing, so that the HLR will send the status information of the called number and the information of the MSC to which the called number belongs through the SMSC of the local network. Return to the SMSC of the external network; in this process, the SMSC of the local network replaces the MSC address to which the called number belongs with the address of the short message service center; the SMSC of the external network sends a final call message to the SMSC of the local network according to the address of the short message service center, and the SMSC of the local network The SMSC of the network initiates the call termination process to the called user of the local network, so as to process the value-added service opened by the called number according to the obtained information of the called number.

In the status report process, the HLR routes the RDS message received from the SMSC of the external network to the SMSC of the local network for processing. Thus, the HLR obtains the information in the RDS message through the SMSC of the local network, and sends the message to the SMSC of the local network. The external network SMSC returns an RDS response message.

The above technical solution of the present invention will be described in more detail below by taking the terminal call flow and the status report flow as examples respectively.

Embodiment one

The final call process is shown in Figure 2, involving the short message service center SMSC of the external network, the short message service routing function entity SMS Router and the service processor (SC, Service Center) in the SMSC of the local network, the HLR of the local network, and the user of the local network. MSC, including the following steps:

1) The external network SMSC sends a MAP_SEND-ROUTING-INFO-FOR-SM (abbreviation SRI message) request message to the local network HLR, requesting to obtain the status information of the called number and the information of the MSC to which the called number belongs;

2) The HLR of the home network passes the SRI request message through the signaling connection control layer (SCCP, Signal Connection Control Part) directly forwards to the SMS Router in the interface gateway (IW/GMSC, InterWorking/Gateway MSC, short message interworking mobile service switching center) of the SMSC of this network;

3) SMS Router forwards the SRI message to the SC of the SMSC of this network after receiving the SRI request message;

4) After the SC receives the SRI message, it sends an SRI Req request message to the SMS Router, requesting the status information of the called number and the information of the MSC to which the called number belongs;

The message carries a flag flag1, which is used to inform the SMS Router that the number (Service Center Address) of the SMSC carried in the SRI message is the number of the original SMSC (that is, the SMSC of the external network) instead of the number of the SMSC. This processing is for the mobile phone power-on notification Alert_SC message sent to the SMSC after the called user turns off the phone and then starts it up again, and can be sent to the original SMSC instead of the SMSC of this network.

5) After the SMS Router receives the request message, it sends a MAP_SEND-ROUTING-INFO-FOR-SM message (SRI message) to the HLR again, requesting to inquire about the status information of the called number and the MSC information to which the called number belongs;

6) The HLR returns the SRI response message to the SMS Router, which contains the called number status information and the MSC information; or, when there is an exception (for example, the called number status information and/or the MSC information is not found) return inform message;

Here, if the response message of the HLR contains the inform message of the InformSC, the inform message will be forwarded to the SMSC of the home network. Therefore, a new interface (internal interface of this network) needs to be added between SMS Router (IW/GMSC) and SC in the SMSC of this network, and the original Inform interface cannot be used.

7) The SMS Router returns an SRI Ack response message to the SC according to the SRI response message;

8) The SC returns the processed response message SRI ACK to the SMS Router according to the returned SRI Ack response message or directly returns the SRI Ack message;

If the SRI Ack is a successful response, the MSC’s Mobile Station Integrated Services Digital Network (MSISDN, Mobile Station Integrated Services Digital Network) number and the called user’s International Mobile Subscriber Identity (IMSI) number will be recorded in the message. , InternationalMobile Subscriber Identity) is carried in the response message SRI ACK, and carries the flag bit flag2, which is used to indicate that the MSC address to which the called number belongs should be replaced with the address of the SMSC, so as to distinguish that the message is sent by the SMSC instead of the outside Sent by the network short message service center; if the SRI Ack is a failed response, the SRI Ack will be returned directly to the SMS Router without any processing.

9) SMS Router returns an SRI response message to the external network SMSC according to the response message of the SC;

The SMS Router either replaces the MSC address of the called number with the address of the short message service center according to the flag2 in the message; or directly returns the received response message without any processing.

10) After the external network SMSC receives the SRI response message, it sends the terminal call request message MtFordReq to the local network SMSC with respect to the IMSI of the called number obtained and the MSC information to which the called number belongs;

11) The SMS Router receives the call termination request message and delivers it to the SC. The delivery principle is the same as that of the SRI message (that is, the number marked with the SMSC is the number of the original SMSC, not the number of the SMSC);

12) After SC receives the terminal call request message, it sends the MtDataReq message to the SMS Router, thereby initiating the terminal call process of the network;

As a result, the information of the called number in the final call process has passed through the SC of the local SMSC, so the SMSC of the local network can perform additional business process processing according to the called value-added service opened by the called number, that is, SMS Router function is realized.

The final call message MtDataReq carries the address number of the MSC to which the called number obtained by the previous SRI Ack belongs, and carries the flag bit flag3 to indicate that the SMS Router does not actively send the short message transmission status report RDS message, but only forwards it to the external network RDS message sent by SMSC.

Note: The SMS Router does not send the RDS here, but returns the response of the same RDS to the external network SMSC, and the external network sends the RDS message. Then the Alert_SC (mobile phone power-on notification) message will be sent to the external network SMSC, so that the external network SMSC initiates the final call again. The SMSC of the local network does not need to store the messages from the external network to the local network, and discards the messages directly after the process fails.

13) SMS Router sends the end call request message MtFordReq to MSC, this end call request message can adopt the original normal short message end call process of this network;

14) The MSC sends back a terminal call response message MtFordAck;

15) Regardless of whether the result of the final call is success or failure, the SMS Router ends the process and returns the Mt final call response message MtDataAck to the SC;

The terminal call response message is transmitted through the internal interface, and the SMS Router also needs to directly return various error codes to the SC through the internal interface without any processing.

16) After the SC receives the terminal call response message MtDataAck, it returns the terminal call response message MtRouteAck to the SMS Router;

17) The SMS Router returns a final call response message MtFordAck to the external network SMSC according to the MtRouteAck message.

Thus, the entire final call process is completed. The short message of the terminal call to the called user of this network arrives at the SMSC of this network, and the processing service of the value-added service is also carried out to the called user during the normal process of terminating the call.

Embodiment two

The status report process is shown in Figure 3, involving the SMS Router and SC in the SMSC of the external network, the SMSC of the local network, the HLR of the local network, and the MSC to which the user of the local network belongs, including the following steps:

1) External network SMSC sends short message transmission status report (RDS, MAP-REPORT-SM-DELIVERY-STATUS) message to HLR;

2) The HLR delivers the RDS message to the SMSRouter of the SMSC of the local network according to the source-dividing function of the calling GT;

3) After the SMS Router receives the RDS message, it sends the RDS Req message to the SC of the SMSC of the local network, and the message carries the relevant information of the called user (including the status information of the called user, etc.);

4) After receiving the message, the SC forwards the RDS Req message to the SMS Router to initiate the RDS sending process of the network;

5) After the SMS Router receives the RDS Req message sent by the SC, it re-sends the RDS message to the HLR, so that the HLR obtains the RDS information through the SMSC of this network;

6) HLR returns RDS response message to SMS Router;

7) After SMS Router receives the RDS response message, it returns the response message RDS Ack to the SC;

8) SC sends back a response message to SMS Router after receiving the RDS Ack message;

9) After SMS Router receives the RDS response, it sends the RDS response back to the external network SMSC.

Short message routing system of the present invention, its innovation is embodied in the SMS Router part in the signaling gateway (IW/GMSC) of this network SMSC, and it is developed on the functional basis of original IW/GMSC, and this system includes External network SMSC, local network SMSC, local network HLR, and MSC of local network users, among which:

The external network SMSC is used to exchange information with the local network HLR when the external network user sends a short message service to the local network user, and initiate a final call to the local network called user;

HLR is used to route the message to the local network SMSC when receiving the message sent by the external network SMSC during the short message service process from the external network user to the local network user, so as to communicate with the external network SMSC through the local network SMSC information exchange;

The local network SMSC is used to exchange information with the HLR when receiving the message routed by the HLR, and send the result of the information interaction to the external network SMSC or HLR, and initiate and end the terminal call process of the local network;

This network SMSC includes short message service routing functional entity SMS Router and service processor SC, wherein:

SMS Router, used to forward the SRI request message routed by the HLR to the SC, obtain the information related to the called number from the HLR according to the information request message of the SC, and include the obtained information in the SRI response message and return it to the external network through the SC SMSC; when receiving the terminal call request message received by the SMSC of the external network, complete the terminal call process of the local network; forward the RDS message routed by the HLR to the SC, and transmit the called number to the HLR according to the RDS request message of the SC RDS information;

The information related to the called number includes status information of the called number and information of the MSC to which the called number belongs.

SC, used to send an information request message to the SMS Router after receiving the SRI request message, thereby initiating the process of obtaining information about the called user in this network; when receiving the SRI response message returned by the SMS Router, return information to the SMS Router Respond to the message, thus ending the process of obtaining the relevant information of the called user on the local network; when receiving the RDS message, send an RDS request message to the SMS Router, thereby initiating the RDS process of the local network;

The SC carries a flag flag1 in the information request message sent to the SMS Router to inform the SMS Router that the number of the SMSC carried in the SRI message is the number of the original SMSC (that is, the SMSC of the external network) instead of the number of the SMSC. This processing is for the mobile phone power-on notification Alert SC message sent to the SMSC after the called user turns off the phone to the power-on again, and can be sent to the original SMSC instead of the SMSC of this network.

According to the SRI response message, the SC responds successfully, and records the MSISDN number of the MSC to which the called number belongs and the IMSI number of the called user in the message, and carries the flag bit flag2 in the returned information response message to indicate It is necessary to replace the MSC address of the called number with the address of this SMSC, so as to distinguish that the message is sent by this SMSC instead of the SMS service center of the external network; or according to the SRI response message as a failed response, the message Return to SMS Router directly without any processing.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (9)

1. short message routing method; Relate to outer net Short Message Service Center SMSC, Home Network SMSC and Home Network attaching position register HLR; Said method comprises: said HLR receive by said outer net SMSC at external user when this network users carries out the message in the short message service process; Earlier said message is routed to said Home Network SMSC,, comprises so that said HLR carries out information interaction through said Home Network SMSC and said outer net SMSC:

The called subscriber's that said HLR will receive from said outer net SMSC information request message is routed to said Home Network SMSC; The said called subscriber's that will be obtained from said HLR by said Home Network SMSC information returns to said outer net SMSC, and the Business Processing of adding according to the called value-added service that the said called subscriber of knowing information and said called subscriber offers;

Wherein, Said called subscriber's information request message is received by the short message service routing function entity SMS Router in the said Home Network SMSC; And be routed to the service processor SC of said Home Network SMSC; By the information request message of said SC according to said called subscriber, to initiate the called subscriber's of Home Network information and obtain flow process, the said called subscriber's that will obtain from said HLR through said SMS Router information returns to said outer net SMSC through info response message.

2. according to the described method of claim 1, it is characterized in that said method also relates to the Home Network moving exchanging center MSC; Said called subscriber's information comprises said called subscriber's state information and the information of the MSC under the said called subscriber; This method also comprises:

Said outer net SMSC sends final call request message through the MSC of said Home Network SMSC under said called subscriber, and through exhaling response message the end that said this MSC of Home Network SMSC reception returns.

3. according to the described method of claim 2, it is characterized in that,

Said SC is through sending information request message to said SMS Router; Initiate the called subscriber's of said Home Network information and obtain flow process; Carry one first sign in the said message, be used for informing that the number of the SMSC that said SMSRouter carries in said information request message is the number of said outer net SMSC;

Said SC is after the response of successful message of receiving the information that contains the said called subscriber who obtains that said SMS Router sends; To in this message, write down the portable terminal Integrated Service Digital Network(ISDN) Mobile Subscriber International ISDN Number of the MSC of called subscriber ownership, called subscriber's international mobile subscriber identity IMSI is carried in the response message that returns to said SMS Router; And in this response message, carry one second sign, the MSC address under the called subscriber is replaced with the address of this SMSC in order to inform said SMS Router;

Said SC exhales message through sending to said SMS Router eventually after receiving the said final call request message that said SMS Router transmits, exhale flow process the end of initiation Home Network; Said SC carries out said additional Business Processing according to the said called subscriber of knowing information and the called value-added service that said called subscriber offers.

4. according to the described method of claim 3, it is characterized in that said HLR will be routed to said Home Network SMSC from the short message transmission status report RDS message that said outer net SMSC receives, get access to said RDS message and preservation through said Home Network SMSC.

5. according to the described method of claim 4, it is characterized in that, exhale said end and carry one the 3rd sign in the message, only transmit the RDS message that said outer net SMSC sends in order to inform said SMS Router;

Said SMS Router will be routed to said SC from the said RDS message that said HLR receives, initiate the RDS flow process of Home Network by said SC according to said RDS message, give said HLR through said SMS Router with said RDS forwards.

6. a short message route system comprises Home Network SMSC and Home Network attaching position register HLR, wherein:

Said HLR; Be used in such a way receive by outer net SMSC external user to this network users send carry out the message of short message service process the time; Said message is routed to said Home Network SMSC, to carry out information interaction: its called subscriber's who receives from said outer net SMSC information request message is routed to said Home Network SMSC through said Home Network SMSC and said outer net SMSC;

Said Home Network SMSC; Be used for accomplishing according to the said message of route in such a way the corresponding flow process of short message service of Home Network: the called user information of accomplishing Home Network according to said called subscriber's information request message is obtained flow process; The Business Processing that the called value-added service of offering according to the said called subscriber of knowing information and said called subscriber simultaneously, adds;

Said Home Network SMSC comprises short message service routing function entity SMS Router and service processor SC, wherein:

Said SMS Router is used to receive said called subscriber's information request message, and is routed to said SC; The information request message of sending according to said SC, the said called subscriber's that will obtain from said HLR information returns to said outer net SMSC through info response message; To give said SC from the final call request message route that said outer net SMSC receives;

Said SC is used for the information request message according to said called subscriber, sends information request message to said SMS Router, thereby the information of initiating the called subscriber of Home Network is obtained flow process; After the info response message of receiving the called subscriber that said SMS Router returns, send info response message to said SMS Router, thereby the information that finishes the called subscriber of said Home Network is obtained flow process; After receiving the said final call request message of said SMS Router route; Send the whole message of exhaling to said SMS Router; Thereby exhale flow process the end of initiating Home Network, carry out said additional Business Processing according to the called value-added service that the said called subscriber of knowing information and said called subscriber offers.

7. according to the described system of claim 6, it is characterized in that, also comprise the Home Network moving exchanging center MSC; Said called subscriber's information comprises said called subscriber's state information and the information of the MSC under the said called subscriber;

Said Home Network SMSC also is used for the final call request message from said outer net SMSC reception, and the MSC under said called subscriber transmits, and with exhaling the end that this MSC returns response message to return to said outer net SMSC.

8. according to the described system of claim 7, it is characterized in that,

Said SC carries one first sign in the said information request message of sending, be used for informing that the number of the SMSC that said SMS Router carries in said information request message is the number of said outer net SMSC; After the response of successful message of receiving the information that contains the said called subscriber who obtains that said SMS Router sends; To in this response message, write down the portable terminal Integrated Service Digital Network(ISDN) Mobile Subscriber International ISDN Number of the MSC of called subscriber ownership, called subscriber's international mobile subscriber identity IMSI is carried in the response message that returns to said SMS Router; And in this response message, carry one second sign, the MSC address under the called subscriber is replaced with the address of this SMSC in order to inform said SMS Router; Behind the response message of the failure of the information of receiving the said called subscriber that said SMS Router sends, the response message that directly will fail returns to said SMS Router.

9. according to the described system of claim 8, it is characterized in that,

Exhale and carry one the 3rd sign in the message the said end that said SC sends, and only transmits the short message transmission status report RDS message that said outer net SMSC sends in order to inform said SMSRouter;

Said HLR will be routed to the said SMS Router of said Home Network SMSC from the said RDS message that said outer net SMSC receives, and get access to said RDS message and preserve through said SMS Router;

Said SMS Router, the RDS message that said HLR is sent is routed to said SC; The said RDS message that said SC is transmitted returns to said HLR;

Said SC is transmitted to said SMS Router again with the said RDS message of route, thereby initiates the RDS flow process of Home Network.

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