CN101247440B

CN101247440B - Method for implementing call switching service

Info

Publication number: CN101247440B
Application number: CN2008100065797A
Authority: CN
Inventors: 刘熠雯; 沈岷; 谢振华
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2008-03-10
Filing date: 2008-03-10
Publication date: 2011-08-24
Anticipated expiration: 2028-03-10
Also published as: CN101247440A

Abstract

The invention discloses a method for realizing a call transferring service. Particularly, after receiving an invitation response message which is sent by an application server a third party user of the call transferring service to a reception side of the call transferring service, an application server deletes number information of the third party user carried in the invitation response message, or instructs other application servers which transfer the invitation response message to delete the number information of the third party user carried in the invitation response message. The invention processes to screen the number of the third party user carried in the invitation response message which is returned to the reception side by the third party user in the call transferring service via AS, hiding the number information of the third party user for all or certain specifically reception sides in the call transferring service so as to reach the request that the user processes to keep secret for the number of the third party user in the call transferring service and provide a more perfect type of service for operators.

Description

A kind of implementation method of call switching business

Technical field

The present invention relates to the communications field, (Next GenerationNetwork is called for short: the implementation method of the execution call switching business of hiding third party user's number information NGN) to relate in particular to a kind of next generation network.

Background technology

With network interconnection agreement (Internet Protocol, be called for short IP) IP multimedia subsystem, IMS (IPMultimedia Core Network Subsystem, be called for short IMS) be in the NGN network of core, adopt initial session protocol (Session Initiation Protocol is called for short SIP) as professional control protocol.In the IMS system, key-course separates with operation layer, and key-course does not provide concrete business, only is responsible for providing to operation layer controlled function such as necessary triggering, route, charging.The controlled function of key-course is to be finished by CSCF (Call Session Control Function is called for short CSCF).

CSCF is divided into Proxy Call Session Control Function (Proxy Call Session Control Function, abbreviation P-CSCF), query call conversation control function (Interrogating Call Session ControlFunction, be called for short I-CSCF) and three types of service call conversation control functions (Serving Call SessionControl Function, abbreviation S-CSCF).Wherein, that take the main responsibility is S-CSCF, be used for accepting user's registration, carry out generic resource identifier (Universal Resource Identifier, be called for short URI) analyze and redirected route, trigger application server (Application Server is called for short AS) and finish the control of calling and continue.P-CSCF is the inlet that subscriber equipment (User Equipment, be called for short UE) inserts the IMS system, and major function is that requests such as SIP registration that UE is sent, session are transmitted to I-CSCF or S-CSCF.I-CSCF is provided to the inlet of home network, and (Home Subscriber Server is called for short: HSS) select S-CSCF flexibly, the SIP service message is routed to S-CSCF can to pass through home subscriber server.Operation layer is made up of a series of AS, and concrete business service can be provided, and AS can be an independent entity, also may reside among the S-CSCF.S-CSCF calls the business on the AS according to user's professional triggering of CAMEL-Subscription-Information control, realizes business function.AS and S-CSCF can be referred to as service equipment (Server Equipment is called for short SE).

Fig. 1 is a kind of typical business realizing framework among the NGN, wherein, may have a plurality of AS that are respectively applied for different business, and AS links to each other by the S-CSCF of interface with the user attaching network.

In Fig. 1, make with dashed lines identify the transfer path of the SIP service message between UE-A and the UE-B, at this, suppose that UE-A and UE-B all are arranged in visited network, the P-CSCF of the SIP service message process visited network that UE-A sends and the I-CSCF of UE-A home network are forwarded to the S-CSCF of UE-A home network.The S-CSCF of UE-A home network determines the position of UE-B, and utilize domain name system (DNS) to serve parse addresses, the SIP service message is sent to the I-CSCF of UE-B home network, this I-CSCF inquires the S-CSCF of UE-B home network, and the SIP service message is sent to the S-CSCF of UE-B home network, pass through the forwarding of the P-CSCF of UE-B visited network again, at last the SIP service message is sent to UE-B.UE-B is corresponding with above-mentioned flow process in the transmission flow process when UE-A sends the SIP service message, at this, repeats no more.When needs trigger business, S-CSCF can send to the SIP service message UE-A and UE-B AS separately, to trigger business, for the type of different business, may send to different AS, AS can carry out various operations to realize different business according to the SIP service message.UE-A and UE-B consult media parameter such as media formats that both sides support and delivery port mutually by the SIP service message, and set up Media Stream and connect, use the Media Stream between solid line UE-A and the UE-B in the drawings, Media Stream is used for transmitting data such as conversation voice packets.

Calling switching (Call Transfer) business is a kind of supplementary service in the communication system, be meant as two users, as user A and user B, set up conversation in communication system after, one of them user is an example with user B, can ask current talking is given to the third party, give user C as switching, that is: between user A and user C, set up conversation, and the conversation speech channel between disconnect user A and the user B.A kind of common application scenarios of this business is: the general manager's secretary is considered as user B, the incoming call of listening user A at first, ask the incoming call intention of user A clearly after, when the needs general manager receives calls in person, utilize call switching business to be given to the general manager, the general manager is considered as user C.

As shown in Figure 2, for realizing the typical process of call switching business in the prior art, for simplicity, omitted the CSCF of UE-B and UE-C among this figure and related to UE-B and the relevant forwarding process of the CSCF of UE-C.Simultaneously, the relevant forwarding process of having omitted P-CSCF, the I-CSCF of UE-A and having related to P-CSCF, the I-CSCF of UE-A has kept the SE of UE-A, and the SE of UE-A has comprised the AS of UE-A and the S-CSCF of UE-A.

Below the method that realizes call switching business in the prior art is described, be in the talking state with UE-A and UE-B, it is example that UE-B will transfer to UE-C with the conversation of UE-A, wherein, UE-A is the reciever of call switching business, and UE-B is the initiator of call switching business, and UE-C is the third party user of call switching business, UE-B will and UE-A between conversation transfer to behind the UE-C, the conversation of being set up between UE-A and the UE-C is called tandem working; SE-A is the service equipment of UE-A, and AS-B is the application server of UE-B, and AS-C is the application server of UE-C, as mentioned above, below will omit with the relevant forwarding process of abridged entity among the figure in the explanation, the actual flow process that transmits is as the criterion with shown in Fig. 1, and this method comprises following steps:

Step 201: when UE-B and UE-A were in talking state, UE-B sent transfer-request message to UE-A;

In transfer-request message, comprise third party's user profile, number that this third party's user profile can be third party user or IP address etc.

Above-mentioned transfer-request message adopts the REFER message in the Session Initiation Protocol;

REFER message is a kind of particular message that defines in the Session Initiation Protocol, the major parameter that REFER message is carried has Refer-To parameter and method parameter, the value of Refer-To parameter is used for third party's user profile of metered call transfer service, that is, and and the information of UE-C; The method parameter is used to indicate the mode of call switching business employing.The initiator of call switching business, i.e. UE-A will be according to the method parameter to third party user, be UE-C, initiate the operation of method parameter indication, at this, call switching business can adopt invitation (INVITE) mode, and UE-A will send INVITE to UE-C according to the method parameter.

Step 202: after transfer-request message arrives AS-B, AS-B carries out record to third party's user profile of carrying in the transfer-request message, and adopt an assigned address to replace third party's user profile of carrying in the transfer-request message, will carry out the transfer-request message that transfer-request message behind the replacement operation is called replacement;

Because call switching business has special charging requirement, the expense that is the session of being set up between UE-A and the UE-C will be born by UE-B is all or part of, therefore, AS-B need be retained on the transfer path of the SIP service message between UE-A and the UE-C, so that charge, step 202 is and satisfies this requirement.Certainly, also can adopt alternate manner, as long as AS-B can be retained on the transfer path of the SIP service message between UE-A and the UE-C.

Above-mentioned assigned address is the address of the particular form that call switching business adopted, and the difference of the address that it is adopted with common SIP service message is that their domain name is identical and user name is different, that is, domain name is identical, sign is different.This assigned address can be the domain name address identical with AS-B, also can be a certain address that call switching business adopted that at first routes to AS-B.

At this, AS-B is after receiving the REFER message that UE-B sends, value with the Refer-To parameter of REFER message, be the information of UE-C, carry out record, use above-mentioned assigned address to replace the value of Refer-To parameter, the REFER message that adopts assigned address to replace the value of Refer-To parameter is called the REFER message of replacement.

Step 203:AS-B sends to UE-A with the transfer-request message of replacing, and the transfer-request message of this replacement arrives UE-A through after the forwarding of SE-A;

At this, AS-B sends to UE-A with the REFER message of replacing.

Step 204:UE-A is after receiving the transfer-request message of replacement, the assigned address that carries in the transfer-request message according to this replacement, this assigned address as destination address, is sent invite request message to this address, and this invite request message at first arrives AS-B through after the forwarding of SE-A;

At this, because the mode of the call switching business of the method parameter of the REFER message of replacing indication is the INVITE mode, therefore UE-A sends INVITE according to the assigned address of method parameter in the Refer-To parameter of the REFER message of the replacement that receives, and this INVETE message at first arrives AS-B through after the forwarding of SE-A.

After step 205:AS-B receives the invite request message of UE-A transmission, extract the third party's user profile of carrying out that is write down and replace third party's user profile of carrying in the preceding transfer-request message, use the third party's user profile that extracts to replace the transmission destination address of received invite request message;

AS-B extracts the value of carrying out the Refer-To parameter before the Refer-To parameter value is replaced of being stored, i.e. the information of UE-C is revised as the destination address of INVITE the information of the UE-C that is extracted.

Step 206:AS-B sends to UE-C with the invitation message that destination address replaces with third party's user profile, and this invitation message arrives UE-C through after the forwarding of AS-C;

AS-B sends to UE-C according to the destination address of amended INVITE with INVITE, and this INVITE arrives UE-C through after the forwarding of AS-C.

After step 207:UE-C receives invitation message, send invitation response message, arrive UE-A after the forwarding of this invitation response message through AS-C, AS-B and SE-A to UE-A;

Carry the number information of UE-C in this invitation response message, therefore after UE-A receives the invitation response message of UE-C transmission, will show the number of UE-C.

Step 208:UE-A receives after invitation that UE-C sends replys corresponding message, shows the number of UE-C, sets up the conversation with UE-C simultaneously, that is, and and tandem working.

Yet in the practical application of call switching business, under a lot of situations, UE-B does not wish that UE-A learns the number of UE-C.Such as: the incoming call that at first hears UE-A as general manager's secretary's user UE-B, after asking the incoming call purpose of UE-A clearly, for the phone that needs the general manager to answer in person, the general manager's secretary utilizes the call switching business switching of will conversing to give as presidential user UE-C, but the general manager's secretary does not wish that UE-A learns presidential number information.

Several and demonstration, business that concealing subscriber number information is relevant are provided in the existing network, and comprising: caller ID display (OIP) is professional, called number shows that (TIP) is professional, caller number restriction (OIR) is professional and called number limits (TIR) business etc.

The OIP business is commonly called as caller identification, be meant when customer call has been opened the user of OIP business, OIP user its user's of meeting show Calls in ring number, suppose that A is the calling party, B is the callee, if B has opened the OIP business, then network will carry the number information of A in the call request message that B sends, just B can be known the number of A in ring.If A does not wish that B knows its number, then can open the OIR business, like this, network will can not carry the number information of A when the call request message that sends to B, and at this moment, B just can't be known the number of A.

Similarly, the TIP business is meant: when A when B makes a call, if A opened the TIP business, then network will carry the callee's of this calling number in the call message that sends to A, i.e. the number of B, A just can show the number of B.If B does not wish that A shows its number, then can open the TIR business, like this, network will can not carry the number of B when A sends call message, and A just can't show the number of B.

In the existing network, business such as OIR, TIR all can be selected open-minded by the user, and the user realizes the demand that it is personalized by the autonomous setting to business.Yet, also do not have a kind of method in call switching business, to realize the calling subscriber is hidden the function of the number of the third party user in the call switching business in the prior art.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of in call switching business, the reciever of call switching business is hidden the method for the number of the third party user in the call switching business.

For solving the problems of the technologies described above, the implementation method of a kind of call switching business of the present invention, be applied to the IP Multimedia System is in the next generation network of core, application server the third party user who receives call switching business after the invitation response message that the reciever of call switching business sends, the third party user's who carries in the configuration information deletion invitation response message according to the third party user who inquires number information, or other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information;

Third party user's configuration information comprises this user's number and hides attribute.

Further, application server is the initiator or the third-party application server of call switching business.

Further, application server as the initiator of call switching business, when other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information, it adds number and hides sign in the invitation response message that receives, and send to reciever, after the application server of reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.

Further, third-party application server when call switching business, when other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information, it adds number and hides sign in the invitation response message that receives, and sends to reciever; After the application server of initiator or reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in this invitation response of sign deletion number information according to number.

Further, number is hidden attribute and comprised: complete hide and part is hidden, hiding attribute when number be part when hiding, also comprises list of numbers in the configuration information.

Further, when the hiding attribute of number is complete hiding, the number information that application server is invited the third party user who carries in the response message for whole recievers deletions of call switching business; Hiding attribute when number be that part is when hiding, application server compares the number that writes down in the list of numbers that comprises in the number of the reciever of call switching business and the configuration information, when the number of reciever was included in the list of numbers, the third party user's who carries in the response message number information was invited in deletion.

Further, a kind of implementation method of call switching business, be applied to the IP Multimedia System is in the next generation network of core, comprise following steps: the third party user of application server receipt of call transfer service is to the invitation response message of the reciever transmission of call switching business, if one of them has opened caller number restriction and/or called number limit service third party user and initiator, the then third party user's who carries in the application server deletion invitation response message number information, or indication is transmitted other application server of this invitation response message and is deleted the third party user's who carries in this invitation response message number information.

Further, application server is call switching business initiator or third-party application server.

Further, when initiator's application server is deleted the third party user's who carries in this invitation response message number information at other application server of this invitation response message of indication forwarding, it adds number and hides sign in the invitation response message that receives, and send to reciever, after the application server of reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.

Further, third party user's application server, when other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information, it is replied in the invitation that receives and adds the hiding sign of number in the corresponding message, and send to reciever, after the application server of initiator or reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.

Further, a kind of implementation method of call switching business, being applied to the IP Multimedia System is in the next generation network of core, comprises following steps:

The initiator of call switching business sends the third party user's who carries call switching business number and the transfer-request message that number is hidden sign thereof to the reciever of call switching business;

The application server of transmitting this transfer-request message is receiving third party user after the invitation response message that reciever sends, hide the third party user's who carries in this invitation response message of sign deletion number information according to above-mentioned number, or indicate other application server of transmitting this invitation response message to delete the third party user's who carries in this invitation response message number information.

Further, application server is the initiator of call switching business or the application server of reciever.

Further, after initiator's application server inquires the hiding sign of third party's Subscriber Number, it adds number and hides sign in inviting response message, and send to reciever, after the application server of reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.

In sum, the third party user's who third party user in the call switching business is carried in the invitation response message that reciever returns by AS number shields, the third party user's who in call switching business, all or some specific recievers has been hidden number information, reached the user for the requirement of in call switching business, third party user's number being maintained secrecy, for operator provides sophisticated service type more.

Description of drawings

Fig. 1 is a kind of typical business realizing Organization Chart in the next generation network in the prior art;

Fig. 2 is the flow chart of call switching business of the prior art;

Fig. 3 is the flow chart of the first embodiment of the present invention;

Fig. 4 is the flow chart of the second embodiment of the present invention;

Fig. 5 is the flow chart of the third embodiment of the present invention.

Embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described:

As shown in Figure 3, be in the talking state with UE-A and UE-B, it is that example describes method of the present invention that UE-B will transfer to UE-C with the conversation of UE-A, wherein, SE-A is the service equipment of UE-A, and AS-B is the application server of UE-B, and AS-C is the application server of UE-C.

For simplicity, in Fig. 3, omitted the CSCF of UE-B and UE-C and relate to UE-B and the relevant forwarding process of the CSCF of UE-C.Simultaneously, the relevant forwarding process of having omitted P-CSCF, the I-CSCF of UE-A and having related to P-CSCF, the I-CSCF of UE-A has kept the SE of UE-A, and the SE of UE-A has comprised the AS of UE-A and the S-CSCF of UE-A.As mentioned above, below will omit with the relevant forwarding process of abridged entity among the figure in the explanation, the actual transmission flow process of message is as the criterion with shown in Fig. 1, and this method comprises following steps:

Step 301: the network manager is configured AS-B, sets up the configuration information of the third party user in the call switching business in AS-B, and record third party user's number is hidden attribute in configuration information;

Above-mentioned third party user may be one or more users,, may set up one or more third party users' configuration information in AS-B that is.

When the third party's customer requirements in the call switching business is hidden its number to the reciever of all-calls transfer service, number that can third party user is hidden attribute and is set to complete hiding, particularly, the number that can identify this third party user by the mode that a flag bit is set in configuration information is hidden attribute for complete hiding.

When the third party's customer requirements in the call switching business is hidden its number to the reciever of part call switching business, number that can third party user is hidden attribute and is set to part and hides, and set up a list of numbers with the number storage of the reciever of call switching business in configuration information, the number of being stored is for hiding the number of the reciever in the call switching business of this third party's Subscriber Number to it.

Step 302: when UE-B and UE-A were in talking state, UE-B sent transfer-request message to UE-A, comprises third party's user profile in transfer-request message;

Number that above-mentioned third party's user profile can be third party user or IP address etc.

Step 303: after transfer-request message arrives AS-B, AS-B carries out record to third party's user profile of carrying in the transfer-request message, and adopt an assigned address to replace third party's user profile of carrying in the transfer-request message, will carry out the transfer-request message that transfer-request message behind the replacement operation is called replacement;

Because call switching business has special charging requirement, the expense that is the session of being set up between UE-A and the UE-C will be born by UE-B is all or part of, therefore, AS-B need be retained on the transfer path of the SIP service message between UE-A and the UE-C, so that charge.Certainly, also can adopt alternate manner, as long as AS-B can be retained on the transfer path of the SIP service message between UE-A and the UE-C.

At this, AS-B is after receiving the REFER message that UE-B sends, value with the Refer-To parameter of REFER message, be the information of UE-C, carry out record, use above-mentioned assigned address to replace the value of Refer-To parameter, this assigned address of use can be the address of AS-B, also can be the address that at first routes to AS-B, the REFER message that adopts assigned address to replace the value of Refer-To parameter is called the REFER message of replacement.

Step 304:AS-B sends to UE-A with the transfer-request message of replacing, and the transfer-request message of this replacement arrives UE-A through after the forwarding of SE-A;

At this, AS-B sends to UE-A with the REFER message of replacing.

Step 305:UE-A is after receiving the transfer-request message of replacement, the assigned address that carries in the transfer-request message according to this replacement, this assigned address as destination address, is sent invite request message to this address, and this invite request message at first arrives AS-B through after the forwarding of SE-A;

After step 306:AS-B receives the invite request message of UE-A transmission, extract the third party's user profile of carrying out that is write down and replace third party's user profile of carrying in the preceding transfer-request message, use the third party's user profile that extracts to replace the transmission destination address of received invite request message;

Step 307:AS-B sends to UE-C with the invitation message that destination address replaces with third party's user profile, and this invitation message arrives UE-C through after the forwarding of AS-C;

After step 308:UE-C receives invitation message, send invitation response message to UE-A;

Step 309: this invitation response message need just can reach UE-A through the forwarding of AS-B, when inviting response message to arrive AS-B, AS-B is according to its configuration information of information inquiry of inviting the UE-C that carries in the response message, and the number that obtains UE-C is hidden attribute;

Certainly, the step of the configuration information of this inquiry UE-C also can be carried out after step 303 or step 306,, receives UE-B after the transfer-request message that UE-A sends at AS-B that is, inquires about; Or, inquire about receiving after UE-A sends to the invite request message of UE-C.

In the present embodiment, the configuration information of UE-C is to be stored in the application server of the configuration information inquiry of carrying out UE-C, yet, the configuration information of UE-C can be stored in other application server or other network element with memory function in the network equally, as long as make information inquiry that the application server of the configuration information inquiry of carrying out UE-C can be by UE-C to its configuration information.

Because AS-B all comprises above-mentioned assigned address in the invitation message of UE-A to the UE-C transmission in transfer-request message that UE-A sends and step 305 in step 304, therefore, after AS-B receives invitation message, will identify the invitation message of the current invitation message that receives for causing by above-mentioned transfer-request message; Owing to invite should response message identically with the session identification of invitation message, therefore after AS-B receives invitation response message, can judge this invitation response message according to session identification be invitation response message to above-mentioned invitation message again.Through above process AS-B is after the received invitation response message of decidable is the invitation response message of the transfer service of carrying out between UE-B and the UE-A, thus the step of inquiring about the configuration information of UE-C.

Step 310: when the hiding attribute of third party user's number is complete hiding, AS-B resolves the invitation response message of receiving, when being resolved to third party user's number, with its deletion or adopt other character or character string that it is replaced, make in this invitation response message and no longer contain third party user's number, and jump to step 311;

Step 311: hiding attribute when third party user's number be that part is when hiding, AS-B compares the number of being stored in the number of the reciever of call switching business and the list of numbers, when the number of the reciever that has call switching business in the list of numbers, AS-B resolves the invitation response message of receiving, with the third party user's that is resolved to number deletion or adopt other character or character string that it is replaced, make the number that no longer contains third party user in this invitation response message, and order is carried out next step; Otherwise, directly carry out next step;

When the number of the reciever of call switching business is not included in the list of numbers, then processing is not deleted or replaced to the number of the UE-C that comprises in the invitation response message that AS-B sends to UE-A UE-C, and promptly this invitation response message will still comprise the number information of UE-C.

Step 312:AS-B will invite response message to send to SE-A, and the invitation response message that SE-A will receive again sends to UE-A;

Step 313:UE-A receives after invitation that UE-C sends replys corresponding message, when comprising the number of UE-C in inviting response message, then show, otherwise UE-A directly sets up conversation with UE-C this method end.

Like this, when AS-B is set to that the reciever of all-calls transfer service hidden third party user's number, then UE-A can't learn the number information of UE-C, not wish that UE-A learns the purpose of the number information of UE-C thereby reach UE-B.

When AS-B is set to the reciever of some call switching business hidden third party user's number information and UE-A and be included among the user that need hide, then UE-A can't learn the number information of UE-C equally, does not wish that UE-A learns the purpose of the number information of UE-C thereby reach UE-B.

When AS-B is set to the reciever of some call switching business is hidden third party user's number information and UE-A when not being included among the user that need hide, then UE-A will be known the number information of UE-C by inviting response message.

Moreover, hide attribute and hide or number hides that attribute is hidden for part and the number of the reciever of call switching business when being included in the list of numbers when AS-B judges the number of UE-C for complete, AS-B can add a number and hide the sign position in the invitation response message of receiving, hide the invitation response message of notifying SE-A to receive in the sign position by this number and handle, make and invite the number information that no longer comprises UE-C in the response message.After SE-A receives and invites response message, after being resolved to the hiding sign of number position, to invite the third party user's who comprises in the response message number deletion or adopt other character or character string that it is replaced, make the number that no longer contains third party user in this invitation response message, the invitation response message that SE-A will hide behind third party user's the number information again sends to UE-A, and UE-A sets up conversation with UE-C after receiving and inviting response message.

Be set to the reciever of some call switching business is hidden third party user's number information as AS-B, and UE-A is not when being included among the user that need hide, then AS-B will can not add the hiding sign of number position in the invitation response message of receiving, do not hide the sign position if in the invitation response message of receiving, comprise number, then, SE-A will be not can not delete or replace the number information of the UE-C that comprises in the invitation response message that receives, promptly will still comprise the number information of UE-C in this invitation response message, SE-A should invite response message to send to UE-A, UE-A promptly sets up conversation with UE-C after receiving and inviting response message, shows the number of UE-C simultaneously.Can reach purpose from third party user's number information to the reciever of call switching business that hide in this way equally.

The foregoing description is by all configuration informations by the third party user of UE-B switching of configuration in AS-B, AS-B is receiving after UE-C sends to the invitation response message of UE-A, whether delete or replace the number information of inviting the UE-C that comprises in the response message by the configuration information decision of inquiring about corresponding third party user, or by SE-A deletion or replace the number information of inviting the UE-C that comprises in the response message, equally, also can be by the configuration information of configuration UE-C in each third party user's AS, third party user when UE-A send to invite response message, after this invitation response message reaches AS-C, whether AS-C deletes or replaces the number information of inviting the third party user who comprises in the response message according to its configuration information decision, and deletes or replace; Same AS-C also can finish the deletion or the replacement of third party's user number information by the hiding sign of adding number position notice AS-B or SE-A in inviting response message.

Below in conjunction with accompanying drawing another embodiment of the present invention is described:

As shown in Figure 4, flow chart for another embodiment of the present invention, whether this embodiment has opened whether OIR and/or the professional decision of TIR hide number information from third party user to UE-A according to the initiator of call switching business, when the initiator of call switching business has opened OIR and/or TIR business, then represent its oneself number information of being unwilling to show to other user, therefore, can think that also this user is unwilling to the number information of other user's demonstration by the third party user of its switching.

The service configuration information of OIR and TIR business generally be stored in user's HSS or OIR is provided and the AS of TIR business in.If configuration information is stored among user's the HSS, the AS of call switching business can utilize the interface between itself and the HSS to obtain the service configuration information of OIR and TIR business; If service configuration information is stored among the AS that provides professional, then the AS of call switching business by and the intercommunication interface that is provided with between the AS of OIR and TIR business is provided, obtain the configuration information of OIR and TIR business, this method comprises following steps:

Step 401:UE-B opens OIR and/or TIR business, and webmaster is the service configuration information that UE-B sets up its business of opening, the record type of service that it activated the service in service configuration information;

Step 402: when UE-B and UE-A were in talking state, UE-B sent transfer-request message to UE-A, comprises third party's user profile in transfer-request message;

Step 403: after transfer-request message arrives AS-B, AS-B carries out record to third party's user profile of carrying in the transfer-request message, and adopt an assigned address to replace third party's user profile of carrying in the transfer-request message, will carry out the transfer-request message that transfer-request message behind the replacement operation is called replacement;

Step 404:AS-B sends to UE-A with the transfer-request message of replacing, and the transfer-request message of this replacement arrives UE-A through after the forwarding of SE-A;

At this, AS-B sends to UE-A with the REFER message of replacing.

Step 405:UE-A is after receiving the transfer-request message of replacement, the assigned address that carries in the transfer-request message according to this replacement, this assigned address as destination address, is sent invite request message to this address, and this invite request message at first arrives AS-B through after the forwarding of SE-A;

After step 406:AS-B receives the invite request message of UE-A transmission, extract the third party's user profile of carrying out that is write down and replace third party's user profile of carrying in the preceding transfer-request message, use the third party's user profile that extracts to replace the transmission destination address of received invite request message;

Step 407:AS-B sends to UE-C with the invitation message that destination address replaces with third party's user profile, and this invitation message arrives UE-C through after the forwarding of AS-C;

After step 408:UE-C receives invitation message, send invitation response message to UE-A;

Step 409: this invitation response message need just can reach UE-A through the forwarding of AS-B, and when inviting response message to arrive AS-B, whether AS-B has opened OIR and/or TIR business according to the number information inquiry UE-B of UE-B;

Certainly, whether this inquiry UE-B opens the step of OIR and/or TIR business also can be carried out after step 403 or step 406,, receives UE-B after the transfer-request message that UE-A sends at AS-B that is, inquires about; Or, inquire about receiving after UE-A sends to the invite request message of UE-C.

Because AS-B all comprises above-mentioned assigned address in the invitation message of UE-A to the UE-C transmission in transfer-request message that UE-A sends and step 405 in step 404, therefore, after AS-B receives invitation message, will identify the invitation message of the current invitation message that receives for causing by above-mentioned transfer-request message; Owing to invite should response message identically with the session identification of invitation message, therefore after AS-B receives invitation response message, can judge this invitation response message according to session identification be invitation response message to above-mentioned invitation message again.Through above process AS-B is after the received invitation response message of decidable is the invitation response message of the transfer service of carrying out between UE-B and the UE-A, thereby inquires about the step whether UE-B has opened OIR and/or TIR business.

Step 410: when UE-B has opened OIR and/or TIR business, AS-B resolves the invitation response message of receiving, with the third party user's that is resolved to number deletion or adopt other character or character string that it is replaced, make in this invitation response message and no longer contain third party user's number, and jump to step 411;

Step 411: when UE-B does not open OIR and/or TIR when professional, AS-B does not delete or replacement operation the third party user's that comprises in the invitation response message that receives number information, and order is carried out next step;

Step 412:AS-B will invite response message to send to SE-A, and the invitation response message that SE-A will receive again sends to UE-A;

Step 413:UE-A receives after invitation that UE-C sends replys corresponding message, when comprising the number of UE-C in inviting response message, then show, otherwise UE-A directly sets up conversation with UE-C this method end.

Moreover, when AS-B judges that UE-B has opened OIR or TIR business, AS-B can add a number and hide the sign position in the invitation response message of receiving, hide the invitation response message of notifying SE-A to receive in the sign position by this number and handle, make and invite the number information that no longer comprises UE-C in the response message.After SE-A receives and invites response message, after being resolved to the hiding sign of number position, to invite the third party user's who comprises in the response message number deletion or adopt other character or character string that it is replaced, make the number that no longer contains third party user in this invitation response message, the invitation response message that SE-A will hide behind third party user's the number information again sends to UE-A, and UE-A sets up conversation with UE-C after receiving and inviting response message.

Equally, also can whether open the number information that OIR and/or TIR business determine whether hiding to UE-A UE-C according to UE-C.Receive the invite request message of UE-A transmission at UE-C after, to return to UE-A and invite response message, when this invites response message to arrive AS-C, AS-C judges whether UE-C opens OIR and/or TIR business, if UE-C has opened OIR or TIR business, then, AS-C will invite the number deletion of the UE-C that comprises in the response message or adopt a specific character or character string to replace; Otherwise AS-C is directly to inviting response message to transmit.

Certainly; if AS-C judges that UE-C has opened OIR and/or TIR business; also can hide the sign position by in the invitation response message that receives, adding number; notice AS-B or SE-A delete or replace the number information of inviting the UE-C that protects in the response message; AS-B or SE-A hide a deletion or the replacement that the number of UE-C is finished in the sign position according to number after receiving invitation response message.

Below in conjunction with accompanying drawing the 3rd embodiment of the present invention is described:

As shown in Figure 5, be the flow chart of the third embodiment of the present invention, this method comprises following steps:

Step 501:UE-B and UE-A are in the talking state, and the UE-B decision sends transfer-request message to UE-A not after UE-A shows the number information of UE-C, carry third party's Subscriber Number and hide sign and third party's user profile in transfer-request message;

In the present embodiment, above-mentioned third party's user profile is third party user's number information.

Step 502: when transfer-request message arrives AS-B, the third party's user profile and the hiding sign of third party's Subscriber Number of carrying in the transfer-request message are carried out record, set up third party's Subscriber Number and hide the corresponding relation of sign and third party's user profile, and adopt an assigned address to replace third party's user profile of carrying in the transfer-request message, will carry out the transfer-request message that transfer-request message behind the replacement operation is called replacement;

Step 503:AS-B sends to UE-A with the transfer-request message of replacing, and the transfer-request message of this replacement arrives UE-A through after the forwarding of SE-A;

At this, AS-B sends to UE-A with the REFER message of replacing.

Step 504:UE-A is after receiving the transfer-request message of replacement, the assigned address that carries in the transfer-request message according to this replacement, this assigned address as destination address, is sent invite request message to this address, and this invite request message at first arrives AS-B through after the forwarding of SE-A;

After step 505:AS-B receives the invite request message of UE-A transmission, extract the third party's user profile of carrying out that is write down and replace third party's user profile of carrying in the preceding transfer-request message, use the third party's user profile that extracts to replace the transmission destination address of received invite request message;

Step 506:AS-B sends to UE-C with the invitation message that destination address replaces with third party's user profile, and this invitation message arrives UE-C through after the forwarding of AS-C;

After step 507:UE-C receives invitation message, send invitation response message to UE-A;

Step 508: this invitation response message need just can reach UE-A through the forwarding of AS-B, after AS-B receives and invites response message, hide the corresponding relation that identifies with third party's user profile according to third party's Subscriber Number that the number inquiry of inviting the UE-C that carries in the response message is stored;

Certainly, this inquiry third party Subscriber Number is hidden sign and also can be carried out after step 502 or step 505 with the step of the corresponding relation of third party's user profile,, receives UE-B after the transfer-request message that UE-A sends at AS-B that is, inquires about; Or, inquire about receiving after UE-A sends to the invite request message of UE-C.

Because AS-B all comprises above-mentioned assigned address in the invitation message of UE-A to the UE-C transmission in transfer-request message that UE-A sends and step 504 in step 503, therefore, after AS-B receives invitation message, will identify the invitation message of the current invitation message that receives for causing by above-mentioned transfer-request message; Owing to invite should response message identically with the session identification of invitation message, therefore after AS-B receives invitation response message, can judge this invitation response message according to session identification be invitation response message to above-mentioned invitation message again.Through above process AS-B is that the received invitation response message of decidable is the invitation response message of the transfer service of carrying out between UE-B and the UE-A, thereby inquires about the step that third party's Subscriber Number of being stored is hidden sign and the corresponding relation of third party's user profile.

Step 509: after AS-B hides sign according to the number inquiry of UE-C to third party's Subscriber Number, with the third party user's that comprises in the invitation response message that receives number deletion or adopt other character or character string that it is replaced, make the number that no longer contains third party user in this invitation response message;

Step 510:AS-B will invite response message to send to SE-A, and the invitation response message that SE-A will receive again sends to UE-A;

Step 511:UE-A receives after invitation that UE-C sends replys corresponding message, sets up the conversation with UE-C, and this method finishes.

Moreover, below only be to receive to carry with AS-B to set up the corresponding relation that third party's Subscriber Number is hidden sign and third party's user profile after third party's Subscriber Number is hidden the transfer-request message of sign, after receiving invitation response message, hide the corresponding relation of sign and third party's user profile according to third party user's number inquiry third party Subscriber Number, after inquiring the hiding sign of third party's Subscriber Number, finish inviting the deletion or the replacement operation of the third party's Subscriber Number that comprises in the response message; Perhaps AS-B is after the invitation response message that receives the UE-C transmission, in inviting response message, add a number and hide the sign position, and should invite response message to send to SE-A, SE-A hides deletion or the replacement operation that the third party's Subscriber Number that comprises in the response message is invited in the sign position according to this number.

Equally, also can be after receiving the transfer-request message of carrying the hiding sign of third party's Subscriber Number except that AS-B by SE-A, set up third party's Subscriber Number and hide the corresponding relation of sign and third party's user profile, and after receiving invitation response message, hide the corresponding relation that identifies with third party's user profile according to third party user's number inquiry third party Subscriber Number, after inquiring the hiding sign of third party's Subscriber Number, finish inviting the deletion or the replacement operation of the third party's Subscriber Number that comprises in the response message.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. the implementation method of a call switching business, being applied to the IP Multimedia System is in the next generation network of core, it is characterized in that,

Application server the third party user who receives call switching business after the invitation response message that the reciever of call switching business sends, the third party user's who carries in the configuration information deletion invitation response message according to the third party user who inquires number information, or other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information;

Described third party user's configuration information comprises this user's number and hides attribute;

Wherein, described application server is the initiator or the described third-party application server of call switching business.

2. the implementation method of call switching business as claimed in claim 1, it is characterized in that, application server as the initiator of call switching business, when other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information, it adds number and hides sign in the described invitation response message that receives, and send to described reciever, after the application server of reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.

3. the implementation method of call switching business as claimed in claim 1, it is characterized in that, third-party application server when call switching business, when other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information, it adds number and hides sign in the invitation response message that receives, and sends to described reciever; After the application server of described initiator or reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in this invitation response of sign deletion number information according to number.

4. as the implementation method of the described call switching business of arbitrary claim in the claim 1 to 3, it is characterized in that, described number is hidden attribute and comprised: complete hide and part is hidden, hiding attribute when number be part when hiding, also comprises list of numbers in the configuration information.

5. the implementation method of call switching business as claimed in claim 4, it is characterized in that, when the hiding attribute of number is complete hiding, the number information that application server is invited the third party user who carries in the response message for whole recievers deletions of call switching business; Hiding attribute when number be that part is when hiding, application server compares the number that writes down in the list of numbers that comprises in the number of the reciever of call switching business and the configuration information, when the number of reciever was included in the list of numbers, the third party user's who carries in the response message number information was invited in deletion.

6. the implementation method of a call switching business, being applied to the IP Multimedia System is in the next generation network of core, it is characterized in that, comprises following steps:

The third party user of application server receipt of call transfer service is to the invitation response message of the reciever transmission of call switching business, if one of them has opened caller number restriction and/or called number limit service third party user and initiator, the then third party user's who carries in the application server deletion invitation response message number information, or indication is transmitted other application server of this invitation response message and is deleted the third party user's who carries in this invitation response message number information; Wherein, described application server is call switching business initiator or third-party application server.

7. the implementation method of call switching business as claimed in claim 6, it is characterized in that, described initiator's application server, when other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information, it adds number and hides sign in the invitation response message that receives, and send to reciever, after the application server of reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.

8. the implementation method of call switching business as claimed in claim 6, it is characterized in that, described third party user's application server, when other application server of this invitation response message of indication forwarding is deleted the third party user's who carries in this invitation response message number information, it adds number and hides sign in the invitation response message that receives, and send to reciever, after the application server of initiator or reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.

9. the implementation method of a call switching business, being applied to the IP Multimedia System is in the next generation network of core, it is characterized in that, comprises following steps:

The application server of transmitting this transfer-request message is receiving described third party user after the invitation response message that described reciever sends, hide the third party user's who carries in this invitation response message of sign deletion number information according to above-mentioned number, or indicate other application server of transmitting this invitation response message to delete the third party user's who carries in this invitation response message number information; Wherein, described application server is the initiator of call switching business or the application server of reciever.

10. the implementation method of call switching business as claimed in claim 9, it is characterized in that, after described initiator's application server inquires the hiding sign of third party's Subscriber Number, it adds number and hides sign in inviting response message, and send to reciever, after the application server of reciever receives the invitation response message that is added with the hiding sign of number, hide the third party user's who carries in the sign deletion invitation response number information according to number.