CN103118352A - Method and system for carrying out routing for call request message - Google Patents
Method and system for carrying out routing for call request message Download PDFInfo
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- CN103118352A CN103118352A CN2011103623725A CN201110362372A CN103118352A CN 103118352 A CN103118352 A CN 103118352A CN 2011103623725 A CN2011103623725 A CN 2011103623725A CN 201110362372 A CN201110362372 A CN 201110362372A CN 103118352 A CN103118352 A CN 103118352A
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Abstract
The invention discloses a method and a system for carrying out routing for a call request message. According to the method for carrying out the routing for the call request message, a service-call session control function (S-CSCF) unit obtains a route access code and an anchoring server identification from an anchoring business initial filter criteria (iFC) according to the call request message sent by a calling party subscriber terminal, adds the route access code and the anchoring server identification to a route header field of the call request message, and sends the call request message to the anchoring sever identified by the anchoring server identification. The anchoring server inserts the route access code before a called party user number, and sends the call request message to a service switching point (SSP). The SSP sends the call request message to a service control point (SCP) corresponding to the route access code. Due to the fact that the SSP is capable of sending the call request message to the SCP corresponding to the route access code, the SSP in a soft exchange network is capable of achieving direct butt joint with an IP multimedia subsystem (IMS) network, and can accurately process call from the IMS network.
Description
Technical field
The present invention relates to the Internet Transmission field, particularly relate to the method and system that call request message is carried out route.
Background technology
Conventional softer switching network user accesses IP Multimedia System (IP MultimediaSubsystem, be called for short: IMS) afterwards, that also wishes to continue to use the conventional softer switching network to provide is intelligent professional, (integratedVirtual Private Network is called for short: iVPN) etc. for for example communication for coordination, integrated VPN.Owing to be at intelligent network application protocol (Intelligent NetworkApplication Protocol in the most of intelligent business in the conventional softer switching network, be called for short: on basis INAP), by Service Switching Point (Service Switch Point, be called for short: SSP) with service control point (ServiceControl Point, be called for short: SCP) carry out intercommunication, carried out triggering and the processing of IN service by SCP.Be used in the IMS network triggering professional CAMEL-Subscription-Information because SSP has, so SSP can't according to the suitable SCP of call request message selection from the IMS network, therefore also just can't carry out correct triggering and processing to IN service.Thereby SSP can't realize docking with the direct of IMS network, and can't correctly process the call request message from IMS.
In order to address this problem, based on prior art, Smart Home Location Register can be set in flexible exchanging network, and (Smart Home Location Register is called for short: SHLR).Each user of storage is used for triggering professional CAMEL-Subscription-Information in the IMS network in this SHLR.When SSP receives call request message from the IMS network, SSP utilizes call request message to inquire about active user's triggering service profile in SHLR, and utilize the corresponding CAMEL-Subscription-Information inquire to select corresponding SCP, thereby finish triggering and processing to IN service by SCP.
Yet, in this manner, in the IMS network, be used for triggering professional CAMEL-Subscription-Information in order to make SSP inquire each user by SHLR, each user need to be used for triggering professional CAMEL-Subscription-Information in the IMS network and be stored in SHLR, this carries out real-time update for also needing to CAMEL-Subscription-Information, and this has greatly increased the operation and maintenance cost of system.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method and system that call request message is carried out route, thereby make the SSP in the flexible exchanging network can realize docking with the direct of IMS network, and can correctly process calling from the IMS network, need not simultaneously the operation that flexible exchanging network carries out extra storage, upgrades user signing contract information.
According to an aspect of the present invention, provide a kind of call request message carried out the method for route, having comprised:
Service call conversation control function (Serving-Call Session Control Function, be called for short: S-CSCF) unit receives the first call request message that the calling part user terminal sends, and wherein the first call request message comprises callee's Subscriber Number, calling part user number, the service point trigger message that is associated with callee's Subscriber Number;
The calling part user number that comprises in S-CSCF unit by using the first call request message and service point trigger message obtain professional initial filter standard or norm (the Initial Filter Criteria of grappling, be called for short: iFC), and from the professional iFC of grappling, obtain route access code and grappling server identification;
The S-CSCF unit increases the route header field in the first call request message, described route access code and grappling server identification are increased in the route header field, obtains the second call request message;
The S-CSCF unit sends to the grappling server that the grappling server identification identifies with the second call request message;
The grappling server after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message;
The grappling server sends to Service Switching Point with the 3rd call request message;
Service Switching Point routes to service control point corresponding to described route access code according to described route access code with the 3rd call request message after receiving the 3rd call request message.
According to an aspect of the present invention, provide a kind of call request message has been carried out the system of route, comprised S-CSCF unit, grappling server, Service Switching Point, wherein:
The S-CSCF unit be used for to receive the first call request message that the calling part user terminal sends, and wherein the first call request message comprises callee's Subscriber Number, calling part user number, the service point trigger message that is associated with callee's Subscriber Number; Utilize the calling part user number and the service point trigger message that comprise in the first call request message to obtain the professional iFC of grappling, and from the professional iFC of grappling, obtain route access code and grappling server identification; In the first call request message, increase the route header field, described route access code and grappling server identification are increased in the route header field, obtain the second call request message, the second call request message is sent to the grappling server that the grappling server identification identifies;
The grappling server is used for after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message; The 3rd call request message is sent to Service Switching Point;
Service Switching Point is used for according to described route access code the 3rd call request message being routed to service control point corresponding to described route access code after receiving the 3rd call request message.
The first call request message that the present invention sends according to the calling part user terminal by the S-CSCF unit obtains route access code and grappling server identification from the professional iFC of current calling subscriber's grappling.The S-CSCF unit increases the route header field in the first call request message, route access code and grappling server identification are increased in the route header field, obtain the second call request message, and the second call request message is sent to the grappling server that the grappling server identification identifies.The grappling server after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message, and the 3rd call request message sent to SSP.SSP sends to SCP corresponding to route access code with the 3rd call request message.Because SSP can be according to the route access code that is inserted into before callee's Subscriber Number, call request message is sent to SCP corresponding to route access code, therefore the SSP in the flexible exchanging network can realize docking with the direct of IMS network, and can correctly process calling from the IMS network, the simultaneously flexible exchanging network operation that need not to carry out extra storage, upgrade user signing contract information.
Description of drawings
Fig. 1 is the present invention carries out an embodiment of method for routing to call request message schematic diagram.
Fig. 2 is the present invention carries out another embodiment of method for routing to call request message schematic diagram.
Fig. 3 is the schematic diagram that an embodiment of filter criteria tabulating method is set up in S-CSCF of the present invention unit.
Fig. 4 is the present invention carries out an embodiment of route system to call request message schematic diagram.
Fig. 5 is the present invention carries out another embodiment of route system to call request message schematic diagram.
Fig. 6 is the present invention carries out the another embodiment of route system to call request message schematic diagram.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.
Fig. 1 is the present invention carries out an embodiment of method for routing to call request message schematic diagram.As shown in Figure 1, the original calling number transmission method of this embodiment is as follows:
Based on what the above embodiment of the present invention provided call request message is carried out the method for route, the first call request message that the S-CSCF unit sends according to the calling part user terminal obtains route access code and grappling server identification from the professional iFC of current calling subscriber's grappling.The S-CSCF unit increases the route header field in the first call request message, route access code and grappling server identification are increased in the route header field, obtain the second call request message, and the second call request message is sent to the grappling server that the grappling server identification identifies.The grappling server after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message, and the 3rd call request message sent to SSP.SSP sends to SCP corresponding to route access code with the 3rd call request message.Because SSP can be according to the route access code that is inserted into before callee's Subscriber Number, call request message is sent to SCP corresponding to route access code, therefore the SSP in the flexible exchanging network can realize docking with the direct of IMS network, and can correctly process calling from the IMS network, the simultaneously flexible exchanging network operation that need not to carry out extra storage, upgrade user signing contract information.
In specific embodiment of the present invention, the information format of route access code and grappling server identification is A@af.operator.com, wherein A is the route access code corresponding to calling subscriber's call business, and af.operator.com is the sign of grappling server in network.
Fig. 2 is the present invention carries out another embodiment of method for routing to call request message schematic diagram.As shown in Figure 2, this embodiment that call request message is carried out method for routing is as follows:
Step 201, S-CSCF unit receive the first call request message that the calling part user terminal sends, and wherein the first call request message comprises callee's Subscriber Number, calling part user number, the service point trigger message that is associated with callee's Subscriber Number.
Step 202, the calling part user number that comprises in S-CSCF unit by using the first call request message and service point trigger message are obtained the professional iFC of grappling.
Another specific embodiment according to the present invention, S-CSCF unit utilize the calling part user number in the first call request message to select current calling subscriber's filter criteria to tabulate after receiving the first call request message.
The S-CSCF unit mates according to the iFC that comprises in the filter criteria tabulation of the service point trigger message in the first call request message to current calling subscriber, selects the professional iFC of grappling in the filter criteria tabulation.
Another specific embodiment according to the present invention, because a professional corresponding iFC, if therefore the user has a plurality of business, this user a plurality of iFC that just will be signed then.Because the priority of different business is different, therefore different priority levels will be set corresponding to the iFC of different business, and the iFC that comprises in the filter criteria tabulation will be arranged according to its priority level.Thereby the S-CSCF unit is according to the service point trigger message in the first call request message, mate according to the iFC that comprises in the filter criteria tabulation of sequencing to current calling subscriber, the iFC that wherein comprises in the filter criteria tabulation arranges according to the priority level of iFC.Can help so preferentially to trigger the high business of priority level.
Step 203, the S-CSCF unit obtains route access code and grappling server identification from the professional iFC of grappling.
In specific embodiment of the present invention, the information format of route access code and grappling server identification is A@ap.operator.com, wherein A is the route access code corresponding to custom calling service, and ap.operator.com is the sign of grappling server in network.
Step 204, S-CSCF unit increase the route header field in the first call request message, described route access code, grappling server identification and S-CSCF element address information are increased in the route header field, obtain the second call request message.
Step 205, the S-CSCF unit sends to the grappling server that the grappling server identification identifies with the second call request message.
Another specific embodiment according to the present invention, (IMS Service Control, be called for short: ISC) interface sends to the grappling server with the second call request message by the IMS Service control in the S-CSCF unit.
Step 206, grappling server after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message.
Another specific embodiment according to the present invention, the grappling server before the route access code is inserted into callee's Subscriber Number after, also with the route access code in the second call request message and the deletion of grappling server identification, to avoid route access code and grappling server identification subsequent operation is impacted.
Step 207, the grappling server sends to S-CSCF unit by the S-CSCF element address information appointment that comprises in the route header field with the 3rd call request message.
Step 208, after the S-CSCF unit received the 3rd call request message, the 3rd call request message is sent to MGCF, and (Media Gateway ControlFunction was called for short: MGCF) unit.
Another specific embodiment according to the present invention, after the S-CSCF unit receives the 3rd call request message, delete the S-CSCF element address information that comprises in the route header field of the 3rd call request message, then the 3rd call request message that will delete S-CSCF element address information sends to the MGCF unit, to avoid S-CSCF element address information subsequent operation is impacted.
Step 209, the MGCF unit sends to SSP with the 3rd call request message.
Step 210, SSP routes to SCP corresponding to described route access code according to described route access code with the 3rd call request message after receiving the 3rd call request message.Carried out triggering and the processing of IN service by SCP.
Fig. 3 is the schematic diagram that an embodiment of filter criteria tabulating method is set up in S-CSCF of the present invention unit.As shown in Figure 3, it is as follows that the filter criteria tabulating method is set up in the S-CSCF unit:
Step 301, when the user registered, (Home Subscriber Server was called for short: HSS) send the query requests that is used for this user iFC of inquiry to home subscriber server in the S-CSCF unit.
Another specific embodiment according to the present invention, the S-CSCF unit sends query requests to HSS again to after the authenticating user identification success.
Step 302, HSS is according to query requests, and whole iFC of this user of inquiry inquire about in user profile.
Step 303, HSS sends to the S-CSCF unit with Query Result.
Step 304, the S-CSCF unit is placed on the iFC that comprises in the Query Result in this user's the filter criteria tabulation.
The below describes this embodiment with a concrete example.
Suppose that the S-CSCF unit receives the voice call request message that user terminal sends, wherein ask Uniform Resource Identifier (Uniform Resource Identifier, be called for short: URI) be:
+862150440045@operator.com
Wherein callee's Subscriber Number is+862150440045.
Service point trigger message in the S-CSCF unit by using request message is selected the professional iFC of grappling in the filter criteria tabulation, the application server address information among the professional iFC of this grappling is:
335608@af.operator.com
Wherein 335608 is route access code corresponding to custom calling service, and ap.operator.com is the sign of grappling server in network.
The S-CSCF unit increases the route header field in call request message, the route access code that increase is obtained from the professional iFC of grappling in the route header field and the address information of grappling server identification and S-CSCF unit self.The S-CSCF unit sends to call request message the grappling server of ap.operator.com sign.
After the grappling server receives request message, route access code 335608 is inserted into before the called number, ask URI to become this moment:
+862133560850440045@operator.com
The grappling server with the deletion of the route access code in the route header field and grappling server identification after, send it to by S-CSCF unit corresponding to S-CSCF element address information that comprises in the route header field.
The S-CSCF unit is after receiving the call request message that the grappling server returns, and the route access code by among the analysis request URI routes to MGCF with it, simultaneously with the S-CSCF element address information deletion in the route header field of call request message.
Route access code among the MGCF analysis request URI, finish the correlation number format analysis processing after, call request is routed to flexible exchanging network SSP.
The route access code of SSP before according to callee's Subscriber Number routes the call to and 335608 corresponding SCP.
Fig. 4 is the present invention carries out an embodiment of route system to call request message schematic diagram.As shown in Figure 4, in the present embodiment call request message is carried out route system and comprise S-CSCF unit 401, grappling server 402, SSP 403, wherein:
S-CSCF unit 401 be used for to receive the first call request message that the calling part user terminal sends, and wherein the first call request message comprises callee's Subscriber Number, calling part user number, the service point trigger message that is associated with callee's Subscriber Number; Utilize the calling part user number and the service point trigger message that comprise in the first call request message to obtain the professional iFC of grappling, and from the professional iFC of grappling, obtain route access code and grappling server identification; In the first call request message, increase the route header field, described route access code and grappling server identification are increased in the route header field, obtain the second call request message, the second call request message is sent to the grappling server 402 that the grappling server identification identifies.
Grappling server 402 is used for after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message; The 3rd call request message is sent to SSP 403.
Based on what the above embodiment of the present invention provided call request message is carried out the system of route, the first call request message that the S-CSCF unit sends according to the calling part user terminal obtains route access code and grappling server identification from the professional iFC of current calling subscriber's grappling.The S-CSCF unit increases the route header field in the first call request message, route access code and grappling server identification are increased in the route header field, obtain the second call request message, and the second call request message is sent to the grappling server that the grappling server identification identifies.The grappling server after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message, and the 3rd call request message sent to SSP.SSP sends to SCP corresponding to route access code with the 3rd call request message.Because SSP can be according to the route access code that is inserted into before callee's Subscriber Number, call request message is sent to SCP corresponding to route access code, therefore the SSP in the flexible exchanging network can realize docking with the direct of IMS network, and can correctly process calling from the IMS network, the simultaneously flexible exchanging network operation that need not to carry out extra storage, upgrade user signing contract information.
In specific embodiment of the present invention, the information format of route access code and grappling server identification is A@af.operator.com, wherein A is the route access code corresponding to calling subscriber's call business, and af.operator.com is the sign of grappling server in network.
In specific embodiment of the present invention, a CSCF unit can comprise Proxy Call Session Control Function (Proxy-Call Session Control Function simultaneously, be called for short: P-CSCF) (Serving-Call Session ControlFunction is called for short: S-CSCF) entity for entity and service call conversation control function.Wherein the P-CSCF entity is the Ingress node of grappling service access IMS network.The S-CSCF entity provides the functions such as the registration service, session control of grappling terminal, relevant routing and professional triggering, and keeps session state information.The professional Trigger Function of S-CSCF entity comprises: finish according to receiving that call request message carries out the iFC assessment, judgement is delivered to grappling server triggers grappling service logic with calling after meeting the professional trigger condition of grappling.S-CSCF entity routing function comprises: the route access code that returns according to the grappling server among the request URI of call request message routes the call to MGCF.
The grappling server possesses the processing logic of grappling business, the functional requirement of inserting the route access code before satisfying.The functional requirement of grappling server is: the route access code partial information of carrying in the route header field according to request message will be inserted into the called number front before this route code.
The route access code of SSP before according to called number delivered to corresponding SCP with calling, in order to make SSP can directly process calling from the IMS network, realizes docking with the direct of IMS network.
Another specific embodiment according to the present invention, S-CSCF unit 401 also are used for after receiving the first call request message, utilize the calling part user number in the first call request message to select current calling subscriber's filter criteria to tabulate; Mate according to the iFC that comprises in the filter criteria tabulation of the service point trigger message in the first call request message to current calling subscriber, in the filter criteria tabulation, select the professional iFC of grappling.
Another specific embodiment according to the present invention, S-CSCF unit 401 also is used for the service point trigger message according to the first call request message, mate according to the iFC that comprises in the filter criteria tabulation of sequencing to current calling subscriber, the iFC that wherein comprises in the filter criteria tabulation arranges according to the priority level of iFC.
After another specific embodiment according to the present invention, grappling server 402 also are used for before the route access code is inserted into callee's Subscriber Number, with the route access code in the route header field and the deletion of grappling server identification.
Fig. 5 is the present invention carries out another embodiment of route system to call request message schematic diagram.Wherein in the embodiment shown in fig. 5, S-CSCF unit 401, grappling server 402, SSP 403 are identical with S-CSCF unit 401, grappling server 402, SSP 403 shown in Figure 4.Also comprise in the embodiment shown in fig. 5 MGCF 501, be used for after receiving the 3rd call request message, the 3rd call request message being sent to SSP 403.
S-CSCF unit 401 also is used for increasing S-CSCF element address information in the route header field after route access code and grappling server identification are increased to the route header field; After receiving the 3rd call request message, the 3rd call request message is sent to MGCF 501.
Grappling server 402 also is used for the 3rd call request message is sent to S-CSCF unit 401 corresponding to S-CSCF element address information.
Another specific embodiment according to the present invention, S-CSCF unit 401 also is used for after receiving the 3rd call request message, then described S-CSCF element address information in the deletion route header field carry out the operation that the 3rd call request message that will delete S-CSCF element address information sends to MGCF501.
Fig. 6 is the present invention carries out the another embodiment of route system to call request message schematic diagram.Wherein in the embodiment shown in fig. 6, S-CSCF unit 401, grappling server 402, SSP 403, MGCF 501 are identical with S-CSCF unit 401, grappling server 402, SSP 403, MGCF 501 shown in Figure 5.Also comprise in the embodiment shown in fig. 5 HSS601, be used for the query requests that is used for this user iFC of inquiry according to 401 transmissions of S-CSCF unit, in user profile, inquire about whole iFC of this user, and Query Result is sent to S-CSCF unit 401.
S-CSCF unit 401 also is used for sending the query requests that is used for this user iFC of inquiry to HSS 601 when the user registers; Receive the Query Result that HSS 601 sends, the iFC that comprises in the Query Result is placed in this user's the filter criteria tabulation.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment with various modifications that the present invention's design is suitable for special-purpose.
Claims (15)
1. one kind is carried out the method for route to call request message, it is characterized in that, comprising:
Service call conversation control function S-CSCF unit receives the first call request message that the calling part user terminal sends, and wherein the first call request message comprises callee's Subscriber Number, calling part user number, the service point trigger message that is associated with callee's Subscriber Number;
The calling part user number that comprises in S-CSCF unit by using the first call request message and service point trigger message obtain the professional initial filter standard or norm of grappling, and obtain route access code and grappling server identification from the professional initial filter standard or norm of grappling;
The S-CSCF unit increases the route header field in the first call request message, described route access code and grappling server identification are increased in the route header field, obtains the second call request message;
The S-CSCF unit sends to the grappling server that the grappling server identification identifies with the second call request message;
The grappling server after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message;
The grappling server sends to Service Switching Point with the 3rd call request message;
Service Switching Point routes to service control point corresponding to described route access code according to described route access code with the 3rd call request message after receiving the 3rd call request message.
2. method according to claim 1, it is characterized in that, the calling part user number that comprises in described S-CSCF unit by using the first call request message and service point trigger message obtain the professional initial filter standard or norm of grappling and comprise: the S-CSCF unit utilizes the calling part user number in the first call request message to select current calling subscriber's filter criteria to tabulate after receiving the first call request message;
The S-CSCF unit mates according to the initial filter standard or norm that comprises in the filter criteria tabulation of the service point trigger message in the first call request message to current calling subscriber, selects the professional initial filter standard or norm of grappling in the filter criteria tabulation.
3. method according to claim 2 is characterized in that,
Described S-CSCF unit mates according to the initial filter standard or norm that comprises in the filter criteria tabulation of the service point trigger message in the first call request message to current calling subscriber and comprises:
The S-CSCF unit is according to the service point trigger message in the first call request message, mate according to the initial filter standard or norm that comprises in the filter criteria tabulation of sequencing to current calling subscriber, the initial filter standard or norm that wherein comprises in the filter criteria tabulation is arranged according to the priority level of initial filter standard or norm.
4. each described method is characterized in that according to claim 1-3,
Described grappling server comprises before the route access code is inserted into callee's Subscriber Number:
Before the grappling server is inserted into callee's Subscriber Number with the route access code;
The grappling server is with the route access code in the route header field and the deletion of grappling server identification.
5. each described method is characterized in that according to claim 1-3,
Described S-CSCF unit is increased to route access code and grappling server identification in the route header field and comprises:
The S-CSCF unit is increased to route access code and grappling server identification in the route header field;
The S-CSCF unit increases S-CSCF element address information in the route header field;
Described grappling server sends to Service Switching Point with the 3rd call request message and comprises:
The grappling server sends to S-CSCF unit corresponding to S-CSCF element address information with the 3rd call request message;
After the S-CSCF unit receives the 3rd call request message, the 3rd call request message is sent to the MGCF unit;
The MGCF unit sends to Service Switching Point with the 3rd call request message after receiving the 3rd call request message.
6. method according to claim 5 is characterized in that,
After described S-CSCF unit receives the 3rd call request message, also comprise:
Then described S-CSCF element address information in the described S-CSCF element deletion route header field carry out the step that the 3rd call request message that will delete S-CSCF element address information sends to the MGCF unit.
7. each described method is characterized in that according to claim 1-3,
The information format of route access code and grappling server identification is A@af.operator.com, and wherein A is the route access code, and af.operator.com is the grappling server identification.
8. according to claim 2 or 3 described methods, it is characterized in that,
When the user registered, the S-CSCF unit sent the query requests that is used for this user's initial filter standard or norm of inquiry to home subscriber server;
Home subscriber server is inquired about whole initial filter standard or norms of this user according to query requests in user profile, and Query Result is sent to the S-CSCF unit;
The S-CSCF unit is placed on the initial filter standard or norm that comprises in the Query Result in this user's the filter criteria tabulation.
9. one kind is carried out the system of route to call request message, it is characterized in that, comprises service call conversation control function S-CSCF unit, grappling server, Service Switching Point, wherein:
The S-CSCF unit be used for to receive the first call request message that the calling part user terminal sends, and wherein the first call request message comprises callee's Subscriber Number, calling part user number, the service point trigger message that is associated with callee's Subscriber Number; Utilize the calling part user number and the service point trigger message that comprise in the first call request message to obtain the professional initial filter standard or norm of grappling, and from the professional initial filter standard or norm of grappling, obtain route access code and grappling server identification; In the first call request message, increase the route header field, described route access code and grappling server identification are increased in the route header field, obtain the second call request message, the second call request message is sent to the grappling server that the grappling server identification identifies;
The grappling server is used for after receiving the second call request message, the route access code is inserted into callee's Subscriber Number before, obtain the 3rd call request message; The 3rd call request message is sent to Service Switching Point;
Service Switching Point is used for according to described route access code the 3rd call request message being routed to service control point corresponding to described route access code after receiving the 3rd call request message.
10. system according to claim 9 is characterized in that,
Described S-CSCF unit also is used for after receiving the first call request message, utilizes the calling part user number in the first call request message to select current calling subscriber's filter criteria to tabulate; Mate according to the initial filter standard or norm that comprises in the filter criteria tabulation of the service point trigger message in the first call request message to current calling subscriber, in the filter criteria tabulation, select the professional initial filter standard or norm of grappling.
11. system according to claim 10 is characterized in that,
Described S-CSCF unit also is used for the service point trigger message according to the first call request message, mate according to the initial filter standard or norm that comprises in the filter criteria tabulation of sequencing to current calling subscriber, the initial filter standard or norm that wherein comprises in the filter criteria tabulation is arranged according to the priority level of initial filter standard or norm.
12. each described system is characterized in that according to claim 9-11,
After described grappling server also is used for before the route access code is inserted into callee's Subscriber Number, with the route access code in the route header field and the deletion of grappling server identification.
13. each described system is characterized in that according to claim 9-11, system also comprises the MGCF unit, is used for after receiving the 3rd call request message the 3rd call request message being sent to Service Switching Point;
Described S-CSCF unit also is used for increasing S-CSCF element address information in the route header field after route access code and grappling server identification are increased to the route header field; After receiving the 3rd call request message, the 3rd call request message is sent to the MGCF unit;
Described grappling server also is used for the 3rd call request message is sent to S-CSCF unit corresponding to S-CSCF element address information.
14. system according to claim 13 is characterized in that,
Described S-CSCF unit also is used for after receiving the 3rd call request message, then described S-CSCF element address information in the deletion route header field carry out the operation that the 3rd call request message that will delete S-CSCF element address information sends to the MGCF unit.
15. each described system according to claim 9-11, it is characterized in that, system also comprises home subscriber server, be used for the query requests that is used for this user's initial filter standard or norm of inquiry according to the transmission of S-CSCF unit, in user profile, inquire about whole initial filter standard or norms of this user, and Query Result is sent to the S-CSCF unit;
Described S-CSCF unit also is used for sending the query requests that is used for this user's initial filter standard or norm of inquiry to home subscriber server when the user registers; Receive the Query Result that home subscriber server sends, the initial filter standard or norm that comprises in the Query Result is placed in this user's the filter criteria tabulation.
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| CN103118352B (en) | 2015-07-29 |
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