CN100407861C - Method for implementing multimedia service calling in circuit domain - Google Patents
Method for implementing multimedia service calling in circuit domain Download PDFInfo
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- CN100407861C CN100407861C CN2004100970466A CN200410097046A CN100407861C CN 100407861 C CN100407861 C CN 100407861C CN 2004100970466 A CN2004100970466 A CN 2004100970466A CN 200410097046 A CN200410097046 A CN 200410097046A CN 100407861 C CN100407861 C CN 100407861C
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Abstract
The present invention discloses a method for realizing multimedia service calls in a circuit switched domain. In the method, first, a calling terminal sends a request message for establishing a CSI call to a called terminal to a CBCF of a packet switched domain, and the called identification is carried in the request message; the CBCF allocates a temporary number to the calling terminal and sends the temporary number to the calling terminal, and simultaneously, preserves the related information of a session initiated by the calling terminal; the currently occupied resources of the packet switched domain are released, and the calling terminal initiates a call in the circuit switched domain according to the received temporary number; a switching device in the circuit switched domain routes the current call to an MGCF/MGW according to the temporary number, and the MGCF/MGW determines the CBCF according to the temporary number and sends a request message for establishing a call to the CBCF; the CBCF determines the called identification according to the temporary number and the session related information preserved by the CBCF and completes the connection with the called according to the called identification. The present invention also discloses another two methods for realizing the CSI call. The proposal of the present invention realizes that the CSI call can be established by terminals and networks which do not use parallel services.
Description
Technical field
The present invention relates to communication technical field, relate to a kind of method that realizes that circuit domain multimedia service (CSI) is called out or rather.
Background technology
In 3G network, comprise that the core net in some networks of Wideband Code Division Multiple Access (WCDMA) (WCDMA) and code division multiple access (CDMA) is made up of circuit domain and packet domain, circuit domain is mainly handled real-time speech, the video traffic of legacy circuit-switched type, and packet domain is then handled multi-medium data business at a high speed.
At present, realized voice and packet data concurrent service in WCDMA, promptly portable terminal can carry out with circuit domain and packet domain simultaneously alternately.All support under the prerequisite of voice and packet data concurrent service in terminal and network, can realize the CSI service calling, can effectively utilize traditional Circuit Service like this by voice and packet data concurrent service.Wherein, CSI service is being realized can also realizing multimedia service in the incoming call by circuit domain.
Realize that based on voice and packet data concurrent service the process that CSI service is called out comprises calling procedure and called flow, respectively as shown in Figures 1 and 2.As can be seen from Figure 1, in realizing the process that CSI service is called out, all need to carry out information interaction as the UE A of call initiator with the CBCF that belongs to packet domain always, and with the mutual process of CBCF in, also need to carry out information interaction with circuit domain (CS DOMAIN).This shows that want to realize the CSI service calling, then terminal and network all need be supported voice and packet data concurrent service.Fig. 2 has these characteristics equally.
In CDMA, terminal can realize speech connection, also can realize data communication, but can't realize data communication when realizing speech connection, and this is because CDMA does not support present voice and packet data concurrent service.Therefore also just can't realize CSI service.
As seen from the above description, the foundation basis that present CSI service is called out implementation is that terminal and legacy network are supported voice and packet data concurrent service, and does not support voice and packet data concurrent service at the majority of network of operation at present.Therefore, though to propose the purpose of above-mentioned technology be in order to make full use of legacy network when realizing CSI service, not support that at most of networks this purpose obviously can't realize under the situation of voice and packet data concurrent service.
Summary of the invention
In view of this, subject matter to be solved by this invention is to provide a kind of method that realizes multimedia service calling in circuit domain, so that do not support the terminal of voice and packet data concurrent service and network can realize CSI service.
For addressing the above problem, technical scheme of the present invention is: a kind of method that realizes multimedia service calling in circuit domain, and this method may further comprise the steps:
A1. calling terminal sends the request message that the CSI that is established to terminal called calls out to the circuit bearer control function (CBCF) of packet domain, carries called identification in the described request message;
B1. described CBCF sends to calling terminal for this calling terminal distributes temporary number with this temporary number, and preserves the relevant information of the session of calling terminal initiation, and described relevant information comprises this temporary number and called identification;
C1. discharge the current packet domain resource that takies, and make a call in circuit domain according to the temporary number of receiving by calling terminal;
D1. the switching equipment of circuit domain is routed to MGCF/media gateway (MGCF/MGW) according to this temporary number with current calling, MGCF/MGW determines corresponding C BCF according to this temporary number, send the request message of setting up calling to CBCF, carry this temporary number in the request message that described foundation is called out;
E1. described CBCF determines called identification according to the session related information of this temporary number and self preservation, and finishes and called continuing according to this called identification.
Among the described step a1, described calling terminal is the initiation message (SIP:INVITE) of Session initiation Protocol to the request message that CBCF sends;
Step b1 further comprises: described CBCF sets up packet domain by No. 200 normal messages (SIP:200OK) of SIP and calls out, and described temporary number sends to calling terminal by this message SIP:200OK;
Further comprise before the step c1: calling terminal is after receiving SIP:200OK message, to the RACK response acknowledge message (SIP:ACK) of CBCF feedback SIP;
Among the step c1, the current packet domain resource that takies of described release is: calling terminal discharges described packet domain by the end (SIP:BYE) that sends SIP to CBCF to be called out, and preserves the session related information of preserving among the step b1 by the cause value notice CBCF that carries in the SIP:BYE message;
Described step c1 further comprises: CBCF keeps this session related information after receiving SIP:BYE message, and returns SIP:200OK message to calling terminal.
Among the described step a1, described calling terminal is a SIP:INVITE message to the request message that CBCF sends;
Among the step b1, described CBCF confirms to accept the CSI calling that calling terminal is initiated by 310 response messages (SIP:310) of SIP, and temporary number is sent to calling terminal by this message SIP:310;
Among the step c1, the current packet domain resource that takies of described release is: CBCF directly discharges by the SIP:310 message that sends among the step b1.
The another kind of method that realizes multimedia service calling in circuit domain of the present invention, this method may further comprise the steps:
A2.CBCF is after the message of receiving the CSI calling that is established to terminal called, for terminal called distributes a circuit domain temporary number, and send to this terminal called and to set up the request message that CSI calls out, carry this temporary number in this request message, this CBCF also preserves the relevant information of current calling, and described relevant information comprises this temporary number and call identification;
B2. terminal called is accepted to set up the message of calling out to the CBCF feedback after receiving described request message, discharges the current packet domain resource that takies, and makes a call in circuit domain according to this temporary number;
C2. the switching equipment of circuit domain is routed to MGCF/MGW according to this temporary number with current calling, MGCF/MGW determines corresponding C BCF according to this temporary number, and, carry this temporary number in the request message that described foundation is called out to the request message that this CBCF sends the foundation calling;
D2.CBCF determines call identification according to the session related information of this temporary number and self preservation, and the calling that terminal called is initiated in circuit domain is associated with the pairing calling of this call identification.
Among the described step a2, described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b2, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:200OK message;
Described step b2 further comprises: described terminal called is set up the calling of terminal called in packet domain by this SIP:200OK message, and described CBCF is after receiving SIP:200OK message, to terminal called feedback SIP:ACK message;
Among the step b2, described terminal called discharges the packet domain resource and is: discharge described packet domain calling by send SIP:BYE message to CBCF, and keep the session related information of preserving among the step a2 by the cause value notice CBCF that carries in the SIP:BYE message;
Described step b2 further comprises: CBCF keeps this session related information after receiving SIP:BYE message, and returns SIP:200OK message to terminal called.
Among the described step a2, described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b2, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:310 message; Described terminal called discharges the packet domain resource: terminal called directly discharges by described SIP:310 message of step.
The method of another realization multimedia service calling in circuit domain of the present invention, this method may further comprise the steps:
A3.CBCF sends to terminal called and to set up the request message that CSI calls out after receiving the message that the CSI that is established to terminal called calls out, and this CBCF also preserves the relevant information of current calling, and described relevant information comprises called identification;
B3. terminal called is accepted to set up the message of calling out to the CBCF feedback, and is discharged the current packet domain resource that takies after receiving described request message;
C3.CBCF makes a call to MGCF/MGW according to the called identification of self preserving after receiving that the message of calling out is set up in the described acceptance of step b3;
To the circuit domain foundation that makes a call, the switching equipment of circuit domain to the terminal called foundation that makes a call, and is finished call setup between circuit domain inside and circuit domain switching equipment and MGCF/MGW according to this called identification to d3.MGCF/MGW according to this called identification.
Among the described step a3, described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b3, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:200OK message;
Described step b3 further comprises: described terminal called is set up the calling of terminal called in packet domain by this SIP:200OK message, and CBCF is after receiving SIP:200OK message, to terminal called feedback SIP:ACK message;
Among the step b3, described terminal called discharges the packet domain resource and is: discharge described packet domain calling by send SIP:BYE message to CBCF, and keep the session related information of preserving among the step a3 by the cause value notice CBCF that carries in the SIP:BYE message;
Described step b3 further comprises: CBCF keeps this session related information after receiving SIP:BYE message, and returns SIP:200OK message to calling terminal.
Among the described step a3, described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b3, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:310 message; Described terminal called discharges the packet domain resource: terminal called directly discharges by described SIP:310 message.
Among the described step a3, described CBCF further comprises after receiving the message of setting up the CSI calling: be that terminal called distributes a circuit domain temporary number;
Among the step a3, described CBCF further comprises this temporary number to the request message of setting up the CSI calling that terminal called sends; The call identification that further comprises described temporary number and current calling in the relevant information of the current calling that described CBCF preserves;
Among the step b3, described terminal called is set up in the message of calling out to the acceptance of the CBCF of self correspondence feedback and is carried identification information, and described identification information represents that initiating CSI by terminal called self or CBCF calls out;
Among the step c3, described CBCF is receiving that the described acceptance of step b3 sets up the message of calling out, and by called identification before MGCF/MGW makes a call, further may further comprise the steps:
The identification information that carries in the message of calling out is set up in the described acceptance of obtaining step b3, and determine by terminal called still to be to make a call by this CBCF according to this identification information, if make a call, then directly carry out the step that makes a call to MGCF/MGW by called identification by this CBCF; If make a call, then carry out following steps by terminal called:
C31. terminal called makes a call in circuit domain according to this temporary number;
C32. the switching equipment of circuit domain is routed to MGCF/MGW according to this temporary number with current calling, MGCF/MGW determines corresponding C BCF according to this temporary number, and, carry this temporary number in the request message that described foundation is called out to the request message that this CBCF sends the foundation calling;
C33.CBCF determines call identification according to the call-related information of this temporary number and self preservation, and the calling that terminal called is initiated in circuit domain is associated with the pairing calling of this call identification.
The present invention program is by when calling terminal or terminal called get access to temporary number, promptly discharge the current packet domain resource that takies, and make a call in circuit domain according to this temporary number by calling terminal or terminal called, perhaps by when terminal called is determined to accept to set up calling, discharge the current packet domain resource that takies, and make a call in circuit domain by CBCF, make the terminal of not supporting voice and packet data concurrent service and network can set up CSI and call out.
Since support voice and packet data concurrent service need occupied terminal than multitask, and the related terminal of the present invention program does not need to support voice and packet data concurrent service, thereby has reduced the task of supporting the terminal of voice and packet data concurrent service, has reduced power consumption.
In addition, owing to support that voice and packet data concurrent service need take more Internet resources, and the related network of the present invention program does not need to support voice and packet data concurrent service, thereby reduced the occupancy of Internet resources, for operator has saved operation cost, increased the capacity of system.
Description of drawings
Fig. 1 realizes the calling procedure that CSI calls out based on voice and packet data concurrent service in the prior art;
Fig. 2 realizes the called flow that CSI calls out based on voice and packet data concurrent service in the prior art;
Fig. 3 realizes the message flow sequential chart that CSI calls out in the calling terminal side among the present invention program;
Fig. 4 is the flow chart based on Fig. 3;
Fig. 5 is a message flow sequential chart of realizing a kind of scheme that CSI calls out in called terminal side;
Fig. 6 is the flow chart based on Fig. 5;
Fig. 7 is a message flow sequential chart of realizing the another kind of scheme that CSI calls out in called terminal side;
Fig. 8 is the flow chart based on Fig. 7.
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention program is described in further detail.
In the present invention program, calling terminal is initiated message flow sequential that CSI calls out as shown in Figure 3, and its pairing flow process specifically may further comprise the steps as shown in Figure 4:
Step 401, the calling terminal CBCF corresponding with this terminal in packet domain sends the request message of the CSI calling that is established to terminal called.
Carried called identification in this request message.This request message is specifically as follows SIP:INVITE message.
Comprise this temporary number in the relevant information that CBCF preserved, also comprised called identification certainly.
In this step, CBCF can set up packet domain by SIP:200OK message and call out, and this temporary number is sent to calling terminal by this SIP:200OK message; Can also directly confirm to accept the CSI calling that calling terminal is initiated by SIP:310 message, and this temporary number is sent to calling terminal by this message.
If the message that calling terminal is received is SIP:200OK message, current packet domain calling of having set up then is described, therefore discharge current packet domain calling of having set up to CBCF feedback SIP:ACK message, and by calling terminal by SIP:BYE message, also promptly discharge the current packet domain resource that has taken.Also should carry the cause value that is used for notifying CBCF to be retained in the session related information that step 402 preserves in this SIP:BYE message, so that in follow-up call proceeding, utilize this session related information.Correspondingly, CBCF keeps this session related information after receiving SIP:BYE message, and returns SIP:200OK message to calling terminal.
If the message that calling terminal is received is SIP:310 message, the current packet domain calling of also not setting up is described, but air interface that packet domain has been current call distribution, that is to say, taken current packet domain resource, and CBCF has directly confirmed the calling of calling terminal initiation by SIP:310 message, therefore discharges this packet domain resource by CBCF, the session related information of preservation before CBCF keeps simultaneously.
The switching equipment of step 404, circuit domain is routed to MGCF/MGW according to this temporary number with current calling.
This request message can be SIP:INVITE message equally.Carry this temporary number in this request message.
By said process, can realize the CSI call establishment.
In the such scheme, call initiator is the calling terminal of circuit domain.Calling receiver may be the terminal of circuit domain, also possible server, if server, then CBCF can directly finish and called continuing according to existing procedure; If the terminal called of circuit domain is called out for realizing CSI, then should realize called connection by following flow process.
In addition, be under the situation of server and so on network equipment of having the call ending function in call initiator, then when realizing that CSI calls out, Calling Side do not need by above-mentioned flow process, and only need to set up the request message of calling out and directly send to CBCF and get final product.But,, then should realize called connection by following flow process equally if the corresponding call recipient is a terminal called.
Below again to realizing that in called terminal side the process that CSI calls out is elaborated.
The present invention proposes two kinds and realize the schemes that CSI calls out in called terminal side, first kind of scheme is by the terminal called foundation that initiatively makes a call, and second kind of scheme then is by the CBCF foundation that makes a call.Respectively these two kinds of schemes are elaborated below.
Initiatively make a call the message flow sequential set up as shown in Figure 5 by terminal called, and corresponding flow process specifically may further comprise the steps then as shown in Figure 6:
Carry this temporary number in this request message.And this request message is specifically as follows SIP:INVITE message.In addition, comprise temporary number and the call identification that is distributed in the relevant information that CBCF preserved.
In this step, it can be SIP:200OK message that terminal called is set up the message of calling out to the acceptance of CBCF feedback, and CBCF is after receiving SIP:200OK message, to terminal called feedback SIP:ACK message.
Terminal called also discharges the current packet domain resource that takies by send SIP:BYE message to CBCF, has also carried cause value in this SIP:BYE message, and this cause value is used for notifying CBCF to be retained in the session related information that step 601 is preserved.CBCF keeps this session related information after receiving SIP:BYE message, and to terminal called feedback SIP:200OK message.
It can also be SIP:310 message that terminal called is set up the message of calling out to the acceptance of CBCF feedback, and like this, terminal called discharges the current packet domain resource that takies for directly discharging by SIP:310 message.
The switching equipment of step 603, circuit domain is routed to MGCF/MGW according to this temporary number with current calling.
MGCF/MGW sends in the request message of CBCF and has carried this temporary number.
Promptly finished the flow process that initiatively makes a call and set up by terminal called by above-mentioned steps.
Make a call the message flow sequential set up as shown in Figure 7 by CBCF, and corresponding flow process specifically may further comprise the steps then as shown in Figure 8:
Owing to be initiatively to initiate to set up process, therefore do not needed distributor circuit territory temporary number by CBCF.This request message is specifically as follows SIP:INVITE message.In addition, comprise called identification in the relevant information that CBCF preserved.
In this step, it can be SIP:200OK message that terminal called is set up the message of calling out to the acceptance of CBCF feedback, and terminal called has just been set up the packet domain calling by this message.CBCF is after receiving SIP:200OK message, to terminal called feedback SIP:ACK message.
Terminal called sends SIP:BYE message to CBCF after receiving SIP:ACK message, call out to discharge the packet domain of setting up before, and keep the session related information of preserving before by the cause value notice CBCF that carries in the SIP:BYE message.CBCF also should return SIP:200OK message to terminal called after receiving this SIP:BYE message.
It can also be SIP:310 message that terminal called is set up the message of calling out to the acceptance of CBCF feedback, and like this, terminal called just can directly discharge the current packet domain resource that takies by this message.
The message that step 803, CBCF send according to terminal called makes a call to MGCF/MGW according to the called identification of self preserving after determining that terminal called is accepted to set up calling.
The switching equipment of step 805, circuit domain to the terminal called foundation that makes a call, and is finished call setup between circuit domain inside and circuit domain switching equipment and the MGCF/MGW according to this called identification.
Promptly finished the flow process that initiatively makes a call and set up by CBCF by above-mentioned steps.
Above-mentioned Fig. 6 and Fig. 8 have provided the two kinds of processes that called terminal side CSI calls out that realize.In fact, when the CSI that realizes called terminal side calls out, can also determine to adopt which kind of scheme by terminal called.
Specifically, owing to know to adopt which kind of scheme to make a call, so CBCF at first will be for terminal called distributes a circuit domain temporary number, and sends to this terminal called and to set up the request message that CSI calls out.Also should preserve the relevant information of current calling simultaneously, this relevant information should comprise temporary number, call identification and the called identification of being distributed, if initiatively made a call by terminal called, then needs to use temporary number and call identification in the subsequent process; If make a call, then need to use called identification in the subsequent process by CBCF.
Afterwards, terminal called increases an identification information when the CBCF feedback is accepted to set up the message of calling out in this message, and it is to make a call by terminal called self or by CBCF that this identification information is used to represent current.
CBCF is after the message of receiving the acceptance foundation calling that terminal called sends, according to the identification information judgment in this message is to make a call by terminal called or by CBCF, if make a call, then make a call and follow-up step in circuit domain according to temporary number in the step 602 in the execution graph 6 by terminal called; If make a call by CBCF self, then step 803 and subsequent step in the execution graph 8.
The present invention program has passed through test, simulation, and is truly feasible.
The above only is the present invention program's preferred embodiment, not in order to limit protection scope of the present invention.
Claims (10)
1. a method that realizes multimedia service calling in circuit domain is characterized in that, this method may further comprise the steps:
A1. calling terminal carries called identification to the request message that the circuit bearer control function CBCF of packet domain sends the circuit domain multimedia service CSI calling that is established to terminal called in the described request message;
B1. described CBCF sends to calling terminal for this calling terminal distributes temporary number with this temporary number, and preserves the relevant information of the session of calling terminal initiation, and described relevant information comprises this temporary number and called identification;
C1. discharge the current packet domain resource that takies, and make a call in circuit domain according to the temporary number of receiving by calling terminal;
D1. the switching equipment of circuit domain is routed to MGCF/media gateway MGCF/MGW according to this temporary number with current calling, MGCF/MGW determines corresponding C BCF according to this temporary number, send the request message of setting up calling to CBCF, carry this temporary number in the request message that described foundation is called out;
E1. described CBCF determines called identification according to the session related information of this temporary number and self preservation, and finishes and called continuing according to this called identification.
2. method according to claim 1 is characterized in that among the described step a1, and the request message that described calling terminal sends to CBCF is that Session initiation Protocol is initiated SIP:INVITE;
Step b1 further comprises: described CBCF sets up packet domain by No. 200 normal messages SIP:200OK of Session initiation Protocol and calls out, and described temporary number sends to calling terminal by this message SIP:200OK;
Further comprise before the step c1: calling terminal is after receiving SIP:200OK message, to CBCF feeding back conversation initiation protocol RACK response acknowledge message SIP:ACK;
Among the step c1, the current packet domain resource that takies of described release is: calling terminal discharges described packet domain calling by send SIP:BYE message to CBCF, and preserves the session related information of preserving among the step b1 by the cause value notice CBCF that carries among the Session initiation Protocol end SIP:BYE;
Described step c1 further comprises: CBCF keeps this session related information after receiving SIP:BYE message, and returns SIP:200OK message to calling terminal.
3. method according to claim 1 is characterized in that among the described step a1, and described calling terminal is a SIP:INVITE message to the request message that CBCF sends;
Among the step b1, described CBCF confirms to accept the CSI calling that calling terminal is initiated by Session initiation Protocol 310 response message SIP:310, and temporary number is sent to calling terminal by this message SIP:310;
Among the step c1, the current packet domain resource that takies of described release is: CBCF directly discharges by the SIP:310 message that sends among the step b1.
4. a method that realizes multimedia service calling in circuit domain is characterized in that, this method may further comprise the steps:
A2.CBCF is after the message of receiving the CSI calling that is established to terminal called, for terminal called distributes a circuit domain temporary number, and send to this terminal called and to set up the request message that CSI calls out, carry this temporary number in this request message, this CBCF also preserves the relevant information of current calling, and described relevant information comprises this temporary number and call identification;
B2. terminal called is accepted to set up the message of calling out to the CBCF feedback after receiving described request message, discharges the current packet domain resource that takies, and makes a call in circuit domain according to this temporary number;
C2. the switching equipment of circuit domain is routed to MGCF/MGW according to this temporary number with current calling, MGCF/MGW determines corresponding C BCF according to this temporary number, and, carry this temporary number in the request message that described foundation is called out to the request message that this CBCF sends the foundation calling;
D2.CBCF determines call identification according to the session related information of this temporary number and self preservation, and the calling that terminal called is initiated in circuit domain is associated with the pairing calling of this call identification.
5. method according to claim 4 is characterized in that among the described step a2, and described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b2, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:200OK message;
Described step b2 further comprises: described terminal called is set up the calling of terminal called in packet domain by this SIP:200OK message, and described CBCF is after receiving SIP:200OK message, to terminal called feedback SIP:ACK message;
Among the step b2, described terminal called discharges the packet domain resource and is: discharge described packet domain calling by send SIP:BYE message to CBCF, and keep the session related information of preserving among the step a2 by the cause value notice CBCF that carries in the SIP:BYE message;
Described step b2 further comprises: CBCF keeps this session related information after receiving SIP:BYE message, and returns SIP:200OK message to terminal called.
6. method according to claim 4 is characterized in that among the described step a2, and described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b2, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:310 message; Described terminal called discharges the packet domain resource: terminal called directly discharges by described SIP:310 message.
7. a method that realizes multimedia service calling in circuit domain is characterized in that, this method may further comprise the steps:
A3.CBCF sends to terminal called and to set up the request message that CSI calls out after receiving the message that the CSI that is established to terminal called calls out, and this CBCF also preserves the relevant information of current calling, and described relevant information comprises called identification;
B3. terminal called is accepted to set up the message of calling out to the CBCF feedback, and is discharged the current packet domain resource that takies after receiving described request message;
C3.CBCF makes a call to MGCF/MGW according to the called identification of self preserving after receiving that the message of calling out is set up in the described acceptance of step b3;
To the circuit domain foundation that makes a call, the switching equipment of circuit domain to the terminal called foundation that makes a call, and is finished call setup between circuit domain inside and circuit domain switching equipment and MGCF/MGW according to this called identification to d3.MGCF/MGW according to this called identification.
8. method according to claim 7 is characterized in that among the described step a3, and described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b3, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:200OK message;
Described step b3 further comprises: described terminal called is set up the calling of terminal called in packet domain by this SIP:200OK message, and CBCF is after receiving SIP:200OK message, to terminal called feedback SIP:ACK message;
Among the step b3, described terminal called discharges the packet domain resource and is: discharge described packet domain calling by send SIP:BYE message to CBCF, and keep the session related information of preserving among the step a3 by the cause value notice CBCF that carries in the SIP:BYE message;
Described step b3 further comprises: CBCF keeps this session related information after receiving SIP:BYE message, and returns SIP:200OK message to calling terminal.
9. method according to claim 7 is characterized in that among the described step a3, and described CBCF to the request message of setting up the CSI calling that terminal called sends is: SIP:INVITE message;
Among the step b3, described terminal called is set up the message of calling out to the acceptance of CBCF feedback and is: SIP:310 message; Described terminal called discharges the packet domain resource: terminal called directly discharges by described SIP:310 message.
10. according to claim 7,8 or 9 described methods, it is characterized in that among the described step a3 that described CBCF further comprises after receiving the message of setting up the CSI calling: be that terminal called distributes a circuit domain temporary number;
Among the step a3, described CBCF further comprises this temporary number to the request message of setting up the CSI calling that terminal called sends; The call identification that further comprises described temporary number and current calling in the relevant information of the current calling that described CBCF preserves;
Among the step b3, described terminal called is set up in the message of calling out to the acceptance of the CBCF of self correspondence feedback and is carried identification information, and described identification information represents that initiating CSI by terminal called self or CBCF calls out;
Among the step c3, described CBCF is receiving that the described acceptance of step b3 sets up the message of calling out, and by called identification before MGCF/MGW makes a call, further may further comprise the steps:
The identification information that carries in the message of calling out is set up in the described acceptance of obtaining step b3, and determine by terminal called still to be to make a call by this CBCF according to this identification information, if make a call, then directly carry out the step that makes a call to MGCF/MGW by called identification by this CBCF; If make a call, then carry out following steps by terminal called:
C31. terminal called makes a call in circuit domain according to this temporary number;
C32. the switching equipment of circuit domain is routed to MGCF/MGW according to this temporary number with current calling, MGCF/MGW determines corresponding C BCF according to this temporary number, and, carry this temporary number in the request message that described foundation is called out to the request message that this CBCF sends the foundation calling;
C33.CBCF determines call identification according to the call-related information of this temporary number and self preservation, and the calling that terminal called is initiated in circuit domain is associated with the pairing calling of this call identification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004100970466A CN100407861C (en) | 2004-12-21 | 2004-12-21 | Method for implementing multimedia service calling in circuit domain |
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| CN2004100970466A CN100407861C (en) | 2004-12-21 | 2004-12-21 | Method for implementing multimedia service calling in circuit domain |
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| CN1798421A CN1798421A (en) | 2006-07-05 |
| CN100407861C true CN100407861C (en) | 2008-07-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101394588A (en) * | 2007-09-21 | 2009-03-25 | 华为技术有限公司 | Method and system for realizing session service in packet domain |
| CN101820604A (en) * | 2010-05-27 | 2010-09-01 | 中兴通讯股份有限公司 | Call proceeding method, device and system |
| CN103546459A (en) * | 2013-09-22 | 2014-01-29 | 中兴通讯股份有限公司 | Method, terminal and server for carrying out session on basis of session initiation protocols |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020110104A1 (en) * | 2001-02-13 | 2002-08-15 | Telefonaktiebolaget Lm Ericsson (Publ). | Hybrid media gateway control function providing circuit-switched access to a packet-switched radio telecommunications network |
| CN1408183A (en) * | 1999-07-30 | 2003-04-02 | 艾利森公司 | Methods and system for switching terminals from packet switched service to circuit switched service |
| CN1421084A (en) * | 2000-03-31 | 2003-05-28 | 摩托罗拉公司 | Method for enabling mobile station to receive circuit-switched page |
| US20040246990A1 (en) * | 2003-06-04 | 2004-12-09 | Nokia Corporation | System and method for handing over a call from a packet-switched network to a circuit-switched network |
| US20040252674A1 (en) * | 2001-06-29 | 2004-12-16 | Jonne Soininen | Circuit-switched and packet-switched communications |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408183A (en) * | 1999-07-30 | 2003-04-02 | 艾利森公司 | Methods and system for switching terminals from packet switched service to circuit switched service |
| CN1421084A (en) * | 2000-03-31 | 2003-05-28 | 摩托罗拉公司 | Method for enabling mobile station to receive circuit-switched page |
| US20020110104A1 (en) * | 2001-02-13 | 2002-08-15 | Telefonaktiebolaget Lm Ericsson (Publ). | Hybrid media gateway control function providing circuit-switched access to a packet-switched radio telecommunications network |
| US20040252674A1 (en) * | 2001-06-29 | 2004-12-16 | Jonne Soininen | Circuit-switched and packet-switched communications |
| US20040246990A1 (en) * | 2003-06-04 | 2004-12-09 | Nokia Corporation | System and method for handing over a call from a packet-switched network to a circuit-switched network |
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| CN1798421A (en) | 2006-07-05 |
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