CN101742448A - Method, device and system for realizing call forwarding service - Google Patents
Method, device and system for realizing call forwarding service Download PDFInfo
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Abstract
The embodiment of the invention discloses a method, a device and a system for realizing a call forwarding service, which belong to the field of communication. The method comprises the following steps: receiving an REFER message sent by a multi-service access node (MSAN), wherein the REFER message is formed by mapping a received FACILITY message sent by a served party by the multi-service access node and comprises a number of the served party, the number of a forwarding target, call forwarding service indicating information and call duration information; judging whether the served party has the authority of the call forwarding service; if the served party has the authority of the call forwarding service, triggering the logic of the call forwarding service and initiating a call to the forwarding target; and when receiving a response to the forwarding target, releasing the call from a forwarded party to the served party. The method, the device, and the system of the embodiment of the invention realize a scene of the call forwarding service in a remain call on invocation mode on the basis of a conventional ISDN terminal under IMS architecture.
Description
Technical field
The present invention relates to the communications field, particularly a kind of methods, devices and systems of realizing call deflection service.
Background technology
IP Multimedia System (IP Multimedia Subsystem, IMS) be the subsystem that IP-based Multimedia session control is provided in the next generation network, comprise the core network element that all provide multimedia service controls such as audio frequency, video, literal, instant message, adopt Session initiation Protocol (Session Initiation Protocol, SIP) agreement is come bearing call control signaling as IMS key-course agreement, and unified multimedia service and application is provided.In the fixed network field, telecommunications and the Internet converged services and high-level network protocol (Telecommunications andInternet converged Services and Protocols for Advanced Networking, TISPAN) formulating next generation network (Next Generation Network, NGN) the network architecture, IMS and common switch switched telephone network (Public Switched Telephone Network, PSTN)/integrated services digital network (Integrated Services Digital Network, ISDN) simulation subsystem is that wherein two key subsystem: IMS adopt and third generation partner program (3rd Generation Partnership Project, 3GPP) unified core control architecture, PSTN/ISDN Emulation Subsystem then is used for the succession to traditional business.
The main network element entity of the IMS network architecture that defines among the TISPAN comprises: CSCF (Call Session Control Function, CSCF), home subscriber server (Home SubscriberServer, HSS), application server (Application Server, AS), Multimedia resource function controller (MRFC) (Multimedia Resource Function Controller, MRFC), Multimedia resource function processor (MRFP) (Multimedia Resource Function Processor, MRFP) and subscriber equipment (User Equipment, UE).
Wherein, CSCF can be divided into again by its position and function: Proxy Call Session Control Function (ProxyCSCF, P-CSCF), (Serving CSCF is S-CSCF) with query call conversation control function (Interrogating CSCF, I-CSCF) three types for service call conversation control function.P-CSCF be among the IMS with first tie point of user, agency (Proxy) is provided function, the request of promptly accepting business is also transmitted them, and finishes the policy control to the Access Network side.S-CSCF is in the control core status in the IMS core net, be responsible for register and authentication and session control to UE, execution is at calling terminal and called end IMS user's basic session routing function, and according to the IMS triggering rule that the user contracts, the value-added service route that proceeds to AS when condition satisfies triggers and professional control alternately.The critical point node of the similar IMS of I-CSCF provides topology hidden function between the user's service node distribution of this territory, routing inquiry and IMS territory.
HSS is a value-added service CAMEL-Subscription-Information of preserving IMS user in the home network, comprises concentrated integrated databases such as basic identification, user security, routing iinformation and service profile.
AS provides value-added service for IMS user, can be positioned at the user attaching net, also can be provided by the third party.
MRFC resolves the SIP resource control command from other S-CSCF and AS by H.248 controlling the media resource on the MRFP, is converted to the corresponding control command of MRFP and produces corresponding charge information.
MRFP is as the network public resource, control and other IMS terminals or IP multimedia gateway (IPMultimedia Gateway, IM-MGW) the IP user's face carrying between connects, under MRFC control, provide resource service, comprise that Media Stream mixes (Multi-Party Conference), multimedia messages is play (playback, Streaming Media), media content dissection process (code conversion, speech recognition etc.).
UE is after the PSTN/ISDN Emulation Subsystem of introducing based on the IMS framework, need utilize IP-based voice (Voice-over-IP, VoIP) gateway device-voice gateways (Voice Gateway, VGW) come to provide business and the consistent business experience identical, make that the user can the perception to some extent owing to the great variety of network generation in using professional process with having the PSTN/ISDN network now for the user of conventional telephone terminal.Therefore, if UE is at the Gm of network side employing based on Session Initiation Protocol, UE also will serve as the network entity function of VGW simultaneously so, supports to comprise various traditional access style of analog subscriber signaling and digital user signalling, and based on the CCF of Session Initiation Protocol.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Communication network is after evolving to the IMS network architecture, conventional I SDN terminal use's business demand still can exist in a large number, and can't realize that at present (CallDeflection CD) keeps business scenario under call proceeding (the remain call on invocation) pattern under the Ye Wu calling service state for call redirection based on conventional I SDN terminal.
Summary of the invention
In order to realize that based on the business scenario under the remain call oninvocation pattern of the Call Deflection business of conventional I SDN terminal the embodiment of the invention provides the methods, devices and systems of realizing call deflection service.Described technical scheme is as follows:
The embodiment of the invention provides a kind of method that realizes call deflection service, comprising:
Receive the REFER message that the integrated service access point sends, the FACILITY message maps that the serviced side that described REFER message will be received by described integrated service access point sends forms, and described REFER message comprises serviced side's number, transfer destination side's number, call deflection service indication information and calls out the information of continuing;
Judge whether described serviced side possesses the call deflection service authority;
If possess, trigger the call deflection service logic, make a call to described transfer destination side;
When receiving the response of described transfer destination side, discharge the calling of the side of being transferred to described serviced side's side.
The embodiment of the invention provides a kind of integrated service access point, comprising:
Receiver module is used to receive the FACILITY message that serviced side sends;
Mapping block is used for described FACILITY message maps is become REFER message, and described REFER message comprises serviced side's number, transfer destination side's number, call deflection service indication information and calls out the information of continuing;
Sending module is used for described REFER message is sent to application server.
The embodiment of the invention provides a kind of application server, comprising:
Receiver module, be used to receive the REFER message that the integrated service access point sends, the FACILITY message maps that the serviced side that described REFER message will be received by described integrated service access point sends forms, and described REFER message comprises serviced side's number, transfer destination side's number, call deflection service indication information and calls out the information of continuing;
Judge module is used to judge whether described serviced side possesses the call deflection service authority;
Sending module is used for when described judge module judges that described serviced side possesses the call deflection service authority, triggers the call deflection service logic, makes a call to described transfer destination side;
Release module is used for when receiving the response of described transfer destination side, discharges the calling of the side of being transferred to described serviced side's side.
The embodiment of the invention provides a kind of system that realizes call deflection service, comprises integrated service access point and application server, wherein,
Described integrated service access point is used to receive the FACILITY message that serviced side sends; This FACILITY message maps is become REFER message, and this REFER message comprises serviced side's number, transfer destination side's number and calls out the information of continuing; This REFER message is sent to described application server;
Described application server is used to receive the described REFER message that described integrated service access point sends; According to described REFER message, judge whether this serviced side possesses the call deflection service authority; When this serviced side possesses the call deflection service authority, trigger the call deflection service logic, make a call to described transfer destination side; When receiving the response of described transfer destination side, discharge the calling of the side of being transferred to serviced side's side.
The technical scheme that the embodiment of the invention provides is by the definition to Signalling exchange and protocol extension between the signaling between DSS1 and SIP mapping and each operation controlling entity, realizes under the IMS framework scene of Call Deflection business under remain call on invocation pattern based on conventional I SDN terminal.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of flow chart of realizing the method for call redirection that the embodiment of the invention 2 provides;
Fig. 2 is a kind of flow chart of realizing the method for call redirection that the embodiment of the invention 2 provides;
Fig. 3 is the structural representation of a kind of integrated service access point of providing of the embodiment of the invention 3;
Fig. 4 is the structural representation of a kind of application server of providing of the embodiment of the invention 3;
Fig. 5 is a kind of structural representation of realizing the system of call redirection that the embodiment of the invention 3 provides.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment 1
The embodiment of the invention provides a kind of method that realizes call redirection, and as shown in Figure 1, this method comprises:
Step 101: receive integrated service access point (Multi-Service Access Node, MSAN) the REFER message of Fa Songing, the FACILITY message maps that the serviced side (ServedUser) that this REFER message will be received by the integrated service access point sends forms, and this REFER message comprises serviced side's number, transfer destination side (Transfer Target User) number, call deflection service indication information and calls out the information of continuing;
Step 102: judge whether serviced side possesses the call deflection service authority;
Step 103: if possess, trigger the call deflection service logic, make a call to transfer destination side;
Step 104: when receiving the response of described transfer destination side, discharge the calling of the side of being transferred to serviced side's side.
Further, the method for the realization call redirection that provides of the embodiment of the invention also comprises:
Before the response that receives this transfer destination side,, then be discharged into the calling of this transfer destination side's side if receive serviced side's response message.
The embodiment of the invention is by the definition to Signalling exchange and protocol extension between the signaling between DSS1 and SIP mapping and each operation controlling entity, realizes under the IMS framework scene of call deflection service under remain call on invocation pattern based on conventional I SDN terminal.
Embodiment 2
The embodiment of the invention provides a kind of method that realizes call redirection, and as shown in Figure 2, this method comprises:
Step 201, the side of being transferred (Transfee User) sends INVITE to AS, makes a call.
Step 202, AS sends to MSAN with INVITE.
Step 203, MSAN converts INVITE to call setup request message, and call setup request message is sent to serviced side (Server User).
Step 204, serviced side's receipt of call process message is carried out the CD operation, and sends call proceeding message to MSAN.
Step 205, the MSAN receipt of call is set up acknowledge message, and the call proceeding message conversion is become 183 response signalings, and 183 response signalings are sent to AS.
Step 206, AS sends to the side of being transferred with 183 response signalings.
The described step of step 201-206 is identical with the time-continuing process of ordinary call, is not described in detail at this.
Step 207 in step 204, after serviced direction MSAN sends call proceeding message, can send FACILITY message to MSAN.
Step 208, MSAN receives FACILITY message, the FACILITY message maps is become REFER message, and this REFER message is sent to AS.
Based on the persistent call pattern, MSAN need continue to keep the calling of business side, therefore can not return 302 response signalings, but sends REFER message to AS.Become REFER message as shown in table 1 the FACILITY message maps:
Table 1
| ??DSS1 | ??SIP |
| ??FACILITY→ | ??REFER→ |
| ??Facility?IE | ??REFER-TO |
| ??CallDeflection?Invoke??ARGUMENT?SEQUENCE{??deflectionAddress?Address} | ??Refer-To:<deflectionAddress_URI；method＝I??NVITE> |
| ??P-Service-Notification | |
| ??P-Service-Notification:call-is-diverting |
Wherein, REFER message comprises:
1) carry the number of transfer destination side in the Refer To header field, this number come from the Facility message in deflectionAddress;
2) P-Service-Notification, expression call deflection service indication information, MSAN carries out the business indication according to the call deflection service indication information to AS.Your normal form ABNF format description of the expansion Ba Kesi of call deflection service indication information-Nao is as follows:
P-Service-Notification＝″P-Service-Notification″
HCOLON?notification
In notification=" Call-is-diverting " // call redirection
REFER message examples based on above-mentioned requirements is as follows:
REFER?sips:park@server.example.com?SIP/2.0
Call-ID:d432fa84b4c76e66710
From:<sip:+86755612345@huawei.com；user＝phone>；tag＝43524545
To:<sip:+8675511111@huawei.com；user＝phone>；tag＝a3343df32
Contact:<sip:+8675522222@huawei.com>
Refer-To:<sip:+8675522222@huawei.com；user＝phone；method＝INVITE>
Referred-By:<sip:+86755612345@huawei.com；user＝phone>
P-Service-Notification:call-is-diverting
Content-Length:0
Step 209, AS receives the REFER message that MSAN sends, and sends 202 response signalings and NOTIFY to MSAN.
Step 210 after MSAN receives NOTIFY, sends 200 response signalings to AS.
Step 211, in step 209, when AS receives REFER message, judge whether serviced side possesses the call deflection service authority, if possess, send INVITE to transfer destination side, this INVITE comprises the Request URI and the To header field of the transfer destination side's number generation that comprises according to REFER message, i.e. transfer destination side's information.
Step 212, transfer destination side receives INVITE, sends 180 response signalings to AS.
Step 213, AS receives 180 signaling responses, sends 180 response signalings to the side of being transferred (Transfee User), and sends Cancel message to MSAN, discharges the calling of the side of being transferred to serviced side.
Step 214, MSAN receives Cancel message, sends 200 response signalings and 487 response signalings to AS.
Step 215, AS receives 200 response signalings and 487 response signalings, and sends the ACK signaling to MSAN.
Step 216, MSAN removes with serviced side and is connected.
Step 217-220, the side of being transferred and transfer destination square tube are crossed AS and are set up session connection.
Need to prove, another kind of application scenarios as present embodiment, AS is after transfer destination side sends INVITE in step 211, if before the response that receives transfer destination side, receive serviced side's response message (connect) earlier, then connect the calling of serviced side's side, and send Cancel message, discharge the calling of AS to transfer destination side to transfer destination side.Transfer destination direction AS sends 200 response signalings and 487 response signalings.AS sends ACK to transfer destination side, and sends 200 response signalings to the side of being transferred.Connected the calling of the serviced side and the side of being transferred by above process.
The embodiment of the invention is by the definition to Signalling exchange and protocol extension between the signaling between DSS1 and SIP mapping and each operation controlling entity, realizes under the IMS framework scene of call deflection service under remain call on invocation pattern based on conventional I SDN terminal.
Embodiment 3
The embodiment of the invention provides a kind of integrated service access point, as shown in Figure 3, comprising:
Receiver module is used to receive the FACILITY message that serviced side sends;
Mapping block is used for this FACILITY message maps is become REFER message, and this REFER message comprises serviced side's number, transfer destination side's number and calls out the information of continuing;
Sending module is used for this REFER message is sent to application server.
The embodiment of the invention provides a kind of application server, as shown in Figure 4, comprising:
Receiver module, be used to receive the REFER message that integrated service access point MSAN sends, the FACILITY message maps that the serviced side that this REFER message will be received by this integrated service access point sends forms, and this REFER message comprises serviced side's number, transfer destination side's number and calls out the information of continuing;
Judge module is used for judging whether this serviced side possesses the call deflection service authority;
Sending module is used for triggering the call deflection service logic when this judge module judges that this serviced side possesses the call deflection service authority, makes a call to this transfer destination side;
Release module is used for when receiving the response of this transfer destination side, discharges the calling of the side of being transferred to serviced side's side.
Optionally, this application server also comprises: first receiver module;
This sending module specifically is used for: send INVITE to transfer destination side, this INVITE comprises the transfer destination side's information that generates according to the transfer destination side's number in the REFER message;
First receiver module is used to receive 180 response signalings that transfer destination side sends;
Release module is used for sending 180 response signalings to the side of being transferred, and sends Cancel message to the integrated service access point, discharges the calling of the side of being transferred to serviced side's side.
Optionally, application server also comprises: second receiver module;
Sending module specifically is used for sending INVITE to transfer destination side, and this INVITE comprises the transfer destination side's information that generates according to the transfer destination side's number in the REFER message;
Second receiver module is used to receive the Connect message that serviced side sends;
Release module specifically is used for before the response that receives described transfer destination side, when receiving serviced side's response message, sends Cancel message to described transfer destination side, is discharged into the calling of transfer destination side's side.
The embodiment of the invention also provides a kind of system that realizes call deflection service, as shown in Figure 5, comprising:
Integrated service access point and application server.
The integrated service access point is used to receive the FACILITY message that serviced side sends; This FACILITY message maps is become REFER message, and this REFER message comprises serviced side's number, transfer destination side's number and calls out the information of continuing; This REFER message is sent to application server.
Application server is used to receive the described REFER message that the integrated service access point sends, and according to described REFER message, judges whether this serviced side possesses the call deflection service authority; When this serviced side possesses the call deflection service authority, trigger the call deflection service logic, make a call to described transfer destination side; When receiving the response of described transfer destination side, discharge the calling of the side of being transferred to serviced side's side.
The embodiment of the invention is by the definition to Signalling exchange and protocol extension between the signaling between DSS1 and SIP mapping and each operation controlling entity, realize under the IMS framework based on conventional I SDN terminal the scene of call deflection service under remain call on invocation pattern.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, and described storage medium is floppy disk, hard disk or the CD etc. of computer.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a method that realizes call deflection service is characterized in that, comprising:
Receive the REFER message that the integrated service access point sends, the FACILITY message maps that the serviced side that described REFER message will be received by described integrated service access point sends forms, and described REFER message comprises serviced side's number, transfer destination side's number, call deflection service indication information and calls out the information of continuing;
Judge whether described serviced side possesses the call deflection service authority;
If possess, trigger the call deflection service logic, make a call to described transfer destination side;
When receiving the response of described transfer destination side, discharge the calling of the side of being transferred to described serviced side's side.
2. the method for realization call deflection service as claimed in claim 1 is characterized in that, also comprises:
Before the response that receives described transfer destination side,, then be discharged into the calling of described transfer destination side side if receive serviced side's response message.
3. the method for realization call deflection service as claimed in claim 2 is characterized in that,
Describedly make a call, comprising to described transfer destination side:
Send INVITE to transfer destination side, described INVITE comprises the transfer destination side's information that generates according to the transfer destination side's number in the REFER message;
Describedly when receiving the response of described transfer destination side, discharge the calling of described serviced side's side, comprising:
Send 180 response signalings to the side of being transferred, and send Cancel message, discharge of the calling of the described side of being transferred to described serviced side's side to described integrated service access point.
4. the method for realization call deflection service as claimed in claim 2 is characterized in that,
Make a call to described transfer destination side, comprising:
Send INVITE to transfer destination side, described INVITE comprises the transfer destination side's information that generates according to the transfer destination side's number in the REFER message;
Described before the response that receives described transfer destination side, if receive serviced side's response message, then be discharged into the calling of described transfer destination side side, comprising:
Before the response that receives described transfer destination side, receive serviced side's Connect message, send Cancel message to described transfer destination side, be discharged into the calling of transfer destination side's side.
5. an integrated service access point is characterized in that, comprising:
Receiver module is used to receive the FACILITY message that serviced side sends;
Mapping block is used for described FACILITY message maps is become REFER message, and described REFER message comprises serviced side's number, transfer destination side's number, call deflection service indication information and calls out the information of continuing;
Sending module is used for described REFER message is sent to application server.
6. an application server is characterized in that, comprising:
Receiver module, be used to receive the REFER message that the integrated service access point sends, the FACILITY message maps that the serviced side that described REFER message will be received by described integrated service access point sends forms, and described REFER message comprises serviced side's number, transfer destination side's number, call deflection service indication information and calls out the information of continuing;
Judge module is used to judge whether described serviced side possesses the call deflection service authority;
Sending module is used for when described judge module judges that described serviced side possesses the call deflection service authority, triggers the call deflection service logic, makes a call to described transfer destination side;
Release module is used for when receiving the response of described transfer destination side, discharges the calling of the side of being transferred to described serviced side's side.
7. application server as claimed in claim 6 is characterized in that, described application server also comprises: first receiver module;
Described sending module is used for sending INVITE to transfer destination side, and described INVITE comprises the transfer destination side's information that generates according to the transfer destination side's number in the REFER message;
Described first receiver module is used to receive 180 responses that described transfer destination side sends;
Described release module is used for sending 180 responses to the side of being transferred, and sends Cancel message to the integrated service access point, discharges the calling of the described side of being transferred to described serviced side's side.
8. application server as claimed in claim 6 is characterized in that, described application server also comprises: second receiver module;
Described sending module is used for sending INVITE to transfer destination side, and described INVITE comprises the transfer destination side's information that generates according to the transfer destination side's number in the REFER message;
Described second receiver module is used to receive the Connect message that described serviced side sends;
Described release module is used for before the response that receives described transfer destination side, when receiving serviced side's response message, sends Cancel message to described transfer destination side, is discharged into the calling of transfer destination side's side.
9. a system that realizes call deflection service is characterized in that, comprises integrated service access point and application server, wherein,
Described integrated service access point is used to receive the FACILITY message that serviced side sends; This FACILITY message maps is become REFER message, and this REFER message comprises serviced side's number, transfer destination side's number and calls out the information of continuing; This REFER message is sent to described application server;
Described application server is used to receive the described REFER message that described integrated service access point sends; According to described REFER message, judge whether this serviced side possesses the call deflection service authority; When this serviced side possesses the call deflection service authority, trigger the call deflection service logic, make a call to described transfer destination side; When receiving the response of described transfer destination side, discharge the calling of the side of being transferred to serviced side's side.
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| CN102572143A (en) * | 2010-12-22 | 2012-07-11 | 中国移动通信集团江苏有限公司 | Method and system for realizing call transfer in private branch exchange (PBX) relay mode in next generation network (NGN) |
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| US20040103308A1 (en) * | 2002-11-25 | 2004-05-27 | Gabor Paller | Self-configuring protocol gateway |
| CN101047628A (en) * | 2006-03-30 | 2007-10-03 | 华为技术有限公司 | System and method for implementing block service of circuit field terminal access packet network |
| CN101052161A (en) * | 2007-03-28 | 2007-10-10 | 华为技术有限公司 | Method and system for realizing IMS business intercommunication |
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| US20040103308A1 (en) * | 2002-11-25 | 2004-05-27 | Gabor Paller | Self-configuring protocol gateway |
| CN101047628A (en) * | 2006-03-30 | 2007-10-03 | 华为技术有限公司 | System and method for implementing block service of circuit field terminal access packet network |
| CN101052161A (en) * | 2007-03-28 | 2007-10-10 | 华为技术有限公司 | Method and system for realizing IMS business intercommunication |
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| CN102572143A (en) * | 2010-12-22 | 2012-07-11 | 中国移动通信集团江苏有限公司 | Method and system for realizing call transfer in private branch exchange (PBX) relay mode in next generation network (NGN) |
| CN102572143B (en) * | 2010-12-22 | 2015-03-11 | 中国移动通信集团江苏有限公司 | Method and system for realizing call transfer in private branch exchange (PBX) relay mode in next generation network (NGN) |
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