CN108616829A - Method, service set and application server for continuity and system for domain selection - Google Patents

Method, service set and application server for continuity and system for domain selection Download PDF

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Publication number
CN108616829A
CN108616829A CN201611143835.8A CN201611143835A CN108616829A CN 108616829 A CN108616829 A CN 108616829A CN 201611143835 A CN201611143835 A CN 201611143835A CN 108616829 A CN108616829 A CN 108616829A
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CN
China
Prior art keywords
terminal
cscf
domains
scc
ims domain
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Granted
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CN201611143835.8A
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Chinese (zh)
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CN108616829B (en
Inventor
马丽妮
毛安平
王晓亮
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN201611143835.8A priority Critical patent/CN108616829B/en
Publication of CN108616829A publication Critical patent/CN108616829A/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16Communication-related supplementary services, e.g. call-transfer or call-hold
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/16Performing reselection for specific purposes
    • H04W36/18Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/04Registration at HLR or HSS [Home Subscriber Server]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08Upper layer protocols
    • H04W80/10Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

Abstract

The invention discloses a kind of method, SCC AS and systems for domain selection, are related to field of communication technology.This method includes:The information that the terminal is attached to the IMS domain when knowing that terminal is attached to IMS domain by SCC AS sends the domains CS equipment to, or the terminal is attached to when knowing that the terminal is attached to the domains CS the information in the domains CS and sends IMS domain equipment to;And in the case where the terminal is attached to IMS domain, when this is terminal called, SCC AS are by call anchoring to the IMS domain;Or in the case where the terminal is attached to the domains CS, when this is terminal called, SCC AS choose the domains CS by domain is called.The present invention realizes the speech business between IMS domain and the domains CS.

Description

Method, service set and application server for continuity and system for domain selection
Technical field
The present invention relates to field of communication technology, more particularly to a kind of method selected for domain, SCC AS (Service Centralization Continuity Application Server, service set and application server for continuity) and be System.
Background technology
VoLTE (Voice over LTE, the speech business based on long term evolution) is in 4GLTE (long term evolution, Long Term Evolution) carry voice traffic new technology.With the development of technology, occur supporting the multimode of 2G, 3G and 4G Terminal, such as the multimode terminal with support CDMA (Code Division Multiple Access, CDMA) and LTE, Or UIM (User Identifier Module, subscriber identification module) card insertion is returned to the terminal of such as CDMA patterns.It is such Terminal is when carrying out speech business, it would be possible to be related to for example in IMS (IP Multimedia Subsystem, IP multimedias Subsystem) the problem of interoperating between domain and CS (Circuit Switched, circuit switching) domain.
Invention content
The inventors found that above-mentioned exist in the prior art problem, and at least one be therefore directed in described problem A problem proposes a kind of new technical solution.
According to the first aspect of the invention, a kind of method for domain selection is provided, including:Service set and continuity The terminal is attached to the IMS by application server SCC AS when knowing that terminal is attached to IP multimedia subsystem IMS domain The information in domain sends circuit-switched CS domain equipment to, or is attached to the terminal when knowing that the terminal is attached to the domains CS The information in the domains CS sends IMS domain equipment to;And in the case where the terminal is attached to the IMS domain, when the end When end is called, the SCC AS are by call anchoring to the IMS domain;Or the case where the terminal is attached to the domains CS Under, when described terminal called, the SCC AS choose the domains CS by domain is called.
In one embodiment, wherein the clothes that the SCC AS pass through session initiation protocol Session Initiation Protocol and the IMS domain Business call session control function S-CSCF docking and the SCC AS pass through mobile application section MAP protocol and the domains CS Home location register HLR docking.
In one embodiment, the terminal is attached to described by SCC AS when knowing that terminal is attached to the IMS domain The information of IMS domain sends the step of domains CS equipment to and includes:When the terminal is when the IMS domain is registered, the SCC AS connect The IMS domain log-on message that the terminal is initiated is received, to know that the terminal is attached to the IMS domain;And the SCC AS sends IMS domain registration notification message to the HLR, the terminal is attached to the IMS domain information send to it is described The domains CS equipment.
In one embodiment, the terminal is attached to the CS by SCC AS when knowing that the terminal is attached to the domains CS The information in domain sends the step of IMS domain equipment to and includes:When the terminal is when the domains CS are registered, the SCC AS are from described HLR receives the domains CS notice of cancellation message, to know that the terminal is attached to the domains CS;And the SCC AS pass through institute It states S-CSCF the terminal is attached to the information in the domains CS and send the IMS domain equipment to.
In one embodiment, in the case where the terminal is attached to the IMS domain, when described terminal called, institute State SCC AS includes by call anchoring to the step of IMS domain:When described terminal called, moving exchanging center MSC is originated Through the HLR IMS route codes and called number are obtained from the SCC AS;The originating MS C is according to the roads IMS received By code and the called number, the Media Gateway Control Function MGCF of the IMS domain is routed the call to;The MGCF is according to institute IMS route codes are stated, enquiry call conversation control function I-CSCF is routed the call to, and remove the IMS route codes, retain institute State called number;The addresses S-CSCF that the I-CSCF is distributed when obtaining user's registration from home signature user server HSS Afterwards, the S-CSCF is routed the call to;And it is described
S-CSCF routes the call to the terminal by Proxy Call Session Control Function P-CSCF.
In one embodiment, described when described terminal called in the case where the terminal is attached to the domains CS SCC AS by call domain choose the domains CS the step of include:When described terminal called, calling is routed to terminal user institute The I-CSCF of ownership;The addresses S-CSCF that the I-CSCF is distributed when obtaining the end-user registration from HSS, and road will be called By to the S-CSCF;The S-CSCF triggerings are called domain choosing, route the call to the SCC AS;The SCC AS are to described S-CSCF returns to CS route codes and called number;The S-CSCF routes the call to MGCF according to the CS route codes;And The MGCF removes the CS route codes, and obtains routing number by the service MSC where the HLR from the terminal, and According to the routing number by call proceeding to the service MSC.
In the method for the invention, the SCC AS for supporting multi-protocols are introduced, which can retain the current institute of terminal The speech business between IMS domain and the domains CS may be implemented when this is terminal called in the status information in attachment domain.
According to the second aspect of the invention, a kind of SCC AS are provided, including:Receiving unit, for receiving terminal attachment It is attached to the information in the domains CS in the information of IMS domain or the terminal;Storage unit is attached to IMS for storing the terminal The information in domain or the terminal are attached to the information in the domains CS;Transmission unit, for the terminal to be attached to the IMS domain Information sends the domains CS equipment to, or the terminal is attached to the information in the domains CS and sends IMS domain equipment to;Call slip Member, in the case where the terminal is attached to the IMS domain, when described terminal called, by call anchoring to the IMS Domain;Or in the case where the terminal is attached to the domains CS, when described terminal called, the CS is chosen into calling domain Domain.
In one embodiment, the IMS domain equipment includes S-CSCF, and the domains CS equipment includes HLR;SCC AS are also wrapped It includes:First interface is docked by Session Initiation Protocol with the S-CSCF of IMS domain;And second interface, pass through MAP protocol and the domains CS The HLR docking.
In one embodiment, wherein when the terminal is when the IMS domain is registered, the receiving unit receives institute The IMS domain log-on message for stating terminal initiation, to know that the terminal is attached to the IMS domain;And the transmission unit to The HLR sends IMS domain registration notification message, and the information that the terminal is attached to the IMS domain sends the domains CS to Equipment.
In one embodiment, wherein when the terminal is when the domains CS are registered, the receiving unit is from the HLR The domains CS notice of cancellation message is received, to know that the terminal is attached to the domains CS;And the transmission unit passes through institute It states S-CSCF the terminal is attached to the information in the domains CS and send the IMS domain equipment to.
In one embodiment, the IMS domain equipment further includes:MGCF, I-CSCF, HSS and P-CSCF, the domains CS are set It is standby to further include:Originating MS C;Wherein, when described terminal called, originating MS C obtains IMS through the HLR from the calling unit Route code and called number;The originating MS C will call road according to the IMS route codes received and the called number By the MGCF to the IMS domain;The MGCF routes the call to I-CSCF, and described in removal according to the IMS route codes IMS route codes retain the called number;The S-CSCF that the I-CSCF is distributed when obtaining user's registration from the HSS Behind location, the S-CSCF is routed the call to;And the S-CSCF routes the call to the terminal by P-CSCF.
In one embodiment, the IMS domain equipment further includes:MGCF, I-CSCF and HSS, the domains CS equipment are also wrapped It includes:Service MSC;Wherein, when described terminal called, calling is routed to the I-CSCF that terminal user is belonged to;The I- The addresses S-CSCF that CSCF is distributed when obtaining the end-user registration from the HSS, and route the call to the S-CSCF; The S-CSCF triggerings are called domain choosing, route the call to the calling unit;The calling unit is returned to the S-CSCF CS route codes and called number;The S-CSCF routes the call to MGCF according to the CS route codes;And the MGCF is gone Routing number is obtained except the CS route codes, and by the service MSC where the HLR from the terminal, and according to the road By number by call proceeding to the service MSC.
In the present invention, the speech business between IMS domain and the domains CS is realized by SCC AS.
According to the third aspect of the invention we, a kind of system for domain selection is provided, including:IMS domain equipment, the domains CS are set Standby and SCC AS;Wherein, the terminal is attached to the IMS domain by SCC AS when knowing that terminal is attached to the IMS domain Information sends the domains CS equipment to, or the terminal is attached to the letter in the domains CS when knowing that the terminal is attached to the domains CS Breath sends IMS domain equipment to;It is described when described terminal called and in the case where the terminal is attached to the IMS domain SCC AS are by call anchoring to the IMS domain;Or in the case where the terminal is attached to the domains CS, when the terminal quilt When crying, the SCC AS choose the domains CS by domain is called.
In one embodiment, the IMS domain equipment includes S-CSCF, and the domains CS equipment includes HLR;Wherein, described SCC AS docked with the S-CSCF of the IMS domain by Session Initiation Protocol and the SCC AS by MAP protocol with it is described The HLR in the domains CS is docked.
In one embodiment, wherein when the terminal is when the IMS domain is registered, the SCC AS receive described The IMS domain log-on message that terminal is initiated, to know that the terminal is attached to the IMS domain;And the SCC AS are to described HLR sends IMS domain registration notification message, and the information that the terminal is attached to the IMS domain sends the domains CS equipment to.
In one embodiment, wherein when the terminal is when the domains CS are registered, the SCC AS connect from the HLR The domains CS notice of cancellation message is received, to know that the terminal is attached to the domains CS;And the SCC AS pass through the S- The information that the terminal is attached to the domains CS by CSCF sends the IMS domain equipment to.
In one embodiment, the IMS domain equipment further includes:MGCF, I-CSCF, HSS and P-CSCF, the domains CS are set It is standby to further include:Originating MS C;Wherein, when described terminal called, originating MS C obtains the roads IMS through the HLR from the SCC AS By code and called number;The originating MS C is according to the IMS route codes received and the called number, by call routing To the MGCF of the IMS domain;The MGCF routes the call to I-CSCF according to the IMS route codes, and removes the IMS Route code retains the called number;It, will behind the addresses S-CSCF that the I-CSCF is distributed when obtaining user's registration from HSS Call routing is to the S-CSCF;And the S-CSCF routes the call to the terminal by P-CSCF.
In one embodiment, the IMS domain equipment further includes:MGCF, I-CSCF and HSS, the domains CS equipment are also wrapped It includes:Service MSC;Wherein, when described terminal called, calling is routed to the I-CSCF that terminal user is belonged to;The I- The addresses S-CSCF that CSCF is distributed when obtaining the end-user registration from HSS, and route the call to the S-CSCF;It is described S-CSCF triggerings are called domain choosing, route the call to the SCC AS;The SCC AS return to CS route codes to the S-CSCF And called number;The S-CSCF routes the call to MGCF according to the CS route codes;And the MGCF removes the CS Route code, and routing number is obtained by the service MSC where the HLR from the terminal, and will according to the routing number Call proceeding is to the service MSC.
In the system of the present invention, the SCC AS for supporting multi-protocols are introduced, which can retain the current institute of terminal The speech business between IMS domain and the domains CS may be implemented when this is terminal called in the status information in attachment domain.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its Advantage will become apparent.
Description of the drawings
The attached drawing of a part for constitution instruction describes the embodiment of the present invention, and is used to solve together with the description Release the principle of the present invention.
The present invention can be more clearly understood according to following detailed description with reference to attached drawing, wherein:
Fig. 1 is the flow chart for showing the method according to an embodiment of the invention for domain selection.
Fig. 2 is the flow chart for the process for showing that terminal according to an embodiment of the invention is adhered in IMS domain.
Fig. 3 is the flow chart for the process for showing that terminal according to an embodiment of the invention is adhered in the domains CS.
Fig. 4 is the schematic diagram for showing User Status conversion according to an embodiment of the invention.
Fig. 5 is the flow chart for showing the called process of the terminal for being attached to IMS domain according to an embodiment of the invention.
Fig. 6 is the flow chart for showing the called process of the terminal for being attached to the domains CS according to an embodiment of the invention.
Fig. 7 is the structure chart for schematically showing the system according to an embodiment of the invention for domain selection.
Fig. 8 is the structure chart for schematically showing SCC AS according to an embodiment of the invention.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that:Unless in addition having Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally The range of invention.
Simultaneously, it should be appreciated that for ease of description, the size of attached various pieces shown in the drawings is not according to reality Proportionate relationship draw.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that:Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the flow chart for showing the method according to an embodiment of the invention for domain selection.
In step S102, the information which is attached to IMS domain when knowing that terminal is attached to IMS domain by SCC AS transmits The domains CS equipment is given, or the terminal is attached to when knowing that terminal is attached to the domains CS the information in the domains CS and sends IMS domain equipment to.
For example, SCC AS can pass through SIP (Session Initiation Protocol, session initiation protocol) agreement It is right with the S-CSCF (Serving-Call Session Control Function, service call conversation control function) of IMS domain It connects and the SCC AS can be by MAP (Mobile Application Part, mobile application section) agreement and the domains CS HLR (Home Location Register, home location register) is docked.In this way, the SCC AS, which work as, knows that terminal is attached to The information that the terminal is attached to IMS domain when IMS domain sends the domains CS equipment to, or should when knowing that terminal is attached to the domains CS The information that terminal is attached to the domains CS sends IMS domain equipment to.
In step S104, in the case where terminal is attached to IMS domain, when this is terminal called, SCC AS are by call anchoring To IMS domain;Or in the case where terminal is attached to the domains CS, when this is terminal called, SCC AS choose the domains CS by domain is called.
What needs to be explained here is that term " anchoring ", which refers to the domains CS user, does caller, and when VoLTE user does called, the domains CS Calling is preferentially gone into IMS domain;Term " domain choosing " refer to IMS domain connect be called VoLTE user when, IMS domain is attached according to terminal The information for domain, by calling choose where domain, such as be attached to the domains CS it is terminal called when, calling is gone into the domains CS.
In the method for above-described embodiment, the SCC AS for supporting multi-protocols are introduced, which can retain terminal and work as The status information in preceding accompanying domain.When this is terminal called, IMS domain equipment or the domains CS equipment can inquire SCC AS, according to SCC The result that AS is returned continues to route, the domain replay call accompanying by incoming terminal, to realize between IMS domain and the domains CS Speech business.
In one embodiment, which is attached to the information of IMS domain when knowing that terminal is attached to IMS domain by SCC AS The step of sending the domains CS equipment to may include:When terminal is when IMS domain is registered, which receives the IMS of terminal initiation Domain log-on message, to know that the terminal is attached to IMS domain;And the SCC AS send IMS domain registration notification message to HLR, Information terminal to be attached to IMS domain sends the domains CS equipment to.This embodiment achieves SCC AS to be attached to IMS domain by terminal Information send the purpose of the domains CS equipment to.
Fig. 2 is the flow chart for the process for showing that terminal according to an embodiment of the invention is adhered in IMS domain.With reference to The process that Fig. 2 detailed description terminals are adhered in IMS domain.
In step S201, I-CSCF (Interrogating-Call Session of the user terminal to home domain Control Function, enquiry call conversation control function) send IMS domain registration (Register) request message.
In step S202, I-CSCF is after receiving Register requests, and to HSS, (Home Subscriber Server, return Belong to assigned user server) send user registration state request message, the addresses S-CSCF that inquiry user is distributed.
In step S203, HSS user registration state response message is returned to I-CSCF.Chartered user is then returned Reuse family chartered addresses S-CSCF;For the user not registered, S-CSCF capability sets are returned to, I-CSCF can basis This capability set selects a S-CSCF and registration request is transmitted to the S-CSCF.
IMS domain login request message is transmitted to the S-CSCF of the home domain inquired in step S204, I-CSCF.
In step S205, S-CSCF sends authentication request message to HSS, inquiry how certification.
In step S206, for HSS to S-CSCF return authentication response messages, which includes the related letter of certification Breath.Such as the authentication response message may include:Configuration file (profile), SCC AS iFC (initial Filter Criteria, initial filter criteria) etc..
200OK is returned to I-CSCF, indicates to succeed in registration in step S207, S-CSCF.
200OK is returned to terminal, indicates to succeed in registration in step S208, I-CSCF.
Third-party registration request message is sent to SCC AS in step S209, S-CSCF, carries out third-party registration.
IMS domain registration notification message is sent to HLR in step S210, SCC AS, to which terminal to be attached to the letter of IMS domain Breath sends the domains CS equipment to.
IMS domain registration reply message is returned to SCC AS in step S211, HLR, indicates that the domains CS equipment has learned that terminal It is attached to the information of IMS domain.
200OK is returned to S-CSCF in step S212, SCC AS, indicates third-party registration success.
In the above-described embodiments, SCC AS can subscribe to the third-party registration of IMS domain, be attached to terminal to realize The information of IMS domain sends the purpose of the domains CS equipment to.
In one embodiment, which is attached to the information biography in the domains CS when knowing that terminal is attached to the domains CS by SCC AS The step of giving IMS domain equipment may include:When terminal is when the domains CS are registered, which receives the domains CS and nullify from HLR leads to Message is known, to know that the terminal is attached to the domains CS;And terminal is attached to the information in the domains CS by S-CSCF by the SCC AS Send IMS domain equipment to.This embodiment achieves SCC AS to be attached to the information in the domains CS by terminal and sends the mesh of IMS domain equipment to 's.
Fig. 3 is the flow chart for the process for showing that terminal according to an embodiment of the invention is adhered in the domains CS.With reference to The process that Fig. 3 detailed description terminals are adhered in the domains CS.
In step S301, terminal sends the domains CS login request message to base station.
In step S302, base station is to MSC (Mobile Switching Center, mobile switching centre) or VLR (Visitor Location Register, VLR Visitor Location Register) sends location update request message.
In step S303, MSC or VLR after receiving location update request message, sends the domains CS registration notification to HLR and disappear Breath, to notify HLR, the accessing terminal to network, such as access network at some specific VLR.
In step S304, HLR the domains CS notice of cancellation message is sent to SCC AS.SCC AS disappear in the domains acquisition CS notice of cancellation Know that terminal is adhered in the domains CS after breath.
It returns to the domains CS in step S305, SCC AS to HLR and nullifies response message.
In step S306, HLR the domains CS registration reply message is returned to MSC or VLR.For example, the HLR issues the end to VLR The configuration file (profile) at end, including:Calling number, service authority etc..
In step S307, MSC or VLR received message is updated to base station return position.
In step S308, base station returns to the registration of the domains CS to terminal and receives instruction, shows that terminal succeeds in registration in the domains CS.
In the above-described embodiments, SCC AS know feelings that terminal is adhered in the domains CS by obtaining CS domain notice of cancellation message Condition.
In an embodiment of the present invention, SCC AS can not only subscribe to the third-party registration of IMS domain, but also can be used as virtual VLR simulates the location updating in CS domains, to obtain terminal the last time log-on message, retains the state in the current accompanying domain of terminal Information.
Fig. 4 is the schematic diagram for showing User Status conversion according to an embodiment of the invention.
In one embodiment, as shown in figure 4, user terminal is in IMS domain login state 401 and the domains CS login state 402 Between convert during, when SCC AS receive notice of cancellation message, know user terminal from 401 turns of IMS domain login state Change to the domains CS login state 402;When SCC AS receive initial registration notification message, know user terminal from the domains CS login state 402 are transformed into IMS domain login state 401.
In one embodiment, as shown in figure 4, user terminal is in IMS domain login state 401 and IMS domain exit state 403 Between convert during, when SCC AS receive notice of cancellation message, know user terminal from 401 turns of IMS domain login state Change to IMS domain exit state 403;When SCC AS receive initial registration notification message, know that user terminal nullifies shape from IMS domain State 403 is transformed into IMS domain login state 401.
In one embodiment, as shown in figure 4, when SCC AS receive re-register notification message, show that user terminal exists It is re-registered on IMS domain login state 401.
In one embodiment, as shown in figure 4, user terminal is in the domains CS login state 402 and IMS domain exit state 403 Between convert during, when SCC AS receive notice of cancellation message, know user terminal from 403 turns of IMS domain exit state Change to the domains CS login state 402.
In the above-described embodiments, SCC AS know the shape in the current accompanying domain of user terminal by receiving different message State information.
In one embodiment of the invention, in the case where terminal is attached to IMS domain, when this is terminal called, SCC Call anchoring to the step of IMS domain may include by AS:When this is terminal called, originating MS C obtains IMS through HLR from SCC AS Route code and called number.Optionally, which can also include:Originating MS C is according to the IMS route codes received and is called Number routes the call to MGCF (Media Gateway Control Function, the media gateway controlling work(of IMS domain Can).Optionally, which can also include:The MGCF routes the call to I-CSCF, and remove IMS according to IMS route codes Route code retains called number.Optionally, which can also include:What I-CSCF was distributed when obtaining user's registration from HSS Behind the addresses S-CSCF, the S-CSCF is routed the call to.Optionally, which can also include:The S-CSCF passes through P-CSCF (Proxy Call Session Control Function, Proxy Call Session Control Function) routes the call to terminal.It should Embodiment realize be attached to IMS domain it is terminal called when, SCC AS are by the process of call anchoring to IMS domain.
Fig. 5 is the flow chart for showing the called process of the terminal for being attached to IMS domain according to an embodiment of the invention. The called process of terminal of IMS domain is attached to reference to Fig. 5 detailed descriptions.
In step S501, the domains CS calling terminal dialing is attached to the called terminal (such as VOLTE terminals) of IMS domain, originates MSC initiates MAP addressing to called HLR.
Apply for routing number to SCC AS in step S502, HLR.Before this called terminal IMS domain register, SCC AS to HLR initiated registration, therefore HLR can apply for routing number to SCC AS.
In step S503, SCC AS IMS route codes and called number are returned to HLR.
In step S504, HLR IMS route codes and called number are returned to originating MS C.
IMS domain is routed the call to according to the IMS route codes received and called number in step S505, originating MS C MGCF。
In step S506, MGCF routes the call to I-CSCF according to IMS route codes, and removes IMS route codes, only Retain called number.
In step S507, I-CSCF (such as pass through DRA (Diameter Routing Agent, route agent's node) and believe Enable net) LIR (Location Info Request, user location inquiry request) inquiries are initiated to HSS, when asking user's registration The addresses S-CSCF of distribution.
LIA (Location Info Answer, location-info-answer) is returned, user is noted in step S508, HSS The addresses S-CSCF distributed when volume return to I-CSCF.
It routes the call to called subscriber according to the addresses S-CSCF received in step S509, I-CSCF and is currently registered S-CSCF.
In step S510, the addresses P-CSCF preserved when S-CSCF is according to user's registration route the call to P-CSCF.
Called terminal is routed the call in step S511, P-CSCF.
By the above flow, realize by the domains CS calling terminal dialing be attached to IMS domain terminal call anchoring to IMS The overall process of domain and connecting.
In one embodiment of the invention, in the case where terminal is attached to the domains CS, when this is terminal called, SCC AS The step of domains CS are chosen in domain, which will be called, may include:When this is terminal called, calling is routed to the I- that terminal user is belonged to CSCF.Optionally, which can also include:The S-CSCF that the I-CSCF is distributed when obtaining the end-user registration from HSS Location, and route the call to the S-CSCF.Optionally, which can also include:S-CSCF triggerings are called domain choosing, will call It is routed to SCC AS.Optionally, which can also include:The SCC AS return to CS route codes and called number to S-CSCF. Optionally, which can also include:The S-CSCF routes the call to MGCF according to CS route codes.Optionally, the step is also May include:The MGCF removes CS route codes, and obtains routing number by the service MSC where HLR from terminal, and according to this Routing number is by call proceeding to service MSC.This embodiment achieves be attached to the domains CS it is terminal called when, SCCAS will be exhaled The process for making domain choose the domains CS.
Fig. 6 is the flow chart for showing the called process of the terminal for being attached to the domains CS according to an embodiment of the invention. The called process of terminal in the domains CS is attached to reference to Fig. 6 detailed descriptions.
In step S601, caller IMS user dials the called terminal (such as VOLTE terminals) for being attached to the domains CS, calls road By the I-CSCF belonged to called subscriber.It should be noted that " OTHER " in Fig. 6 indicates other networks or terminal, it is different from Instantly called terminal.
LIR inquiries are initiated to HSS, ask the user's registration time-division in step S602, I-CSCF (such as passing through DRA signaling networks) The addresses S-CSCF matched.
LIA is returned to I-CSCF in step S603, HSS, the addresses S-CSCF distributed when registering customers as return to I- CSCF。
It routes the call to called subscriber according to the addresses S-CSCF received in step S604, I-CSCF and is currently registered S-CSCF.
Called domain is triggered first in step S605, S-CSCF to select, and routes the call to SCC AS.
In step S606, SCC AS CS route codes and called number are returned to S-CSCF.Called terminal is in 2G nets before Network is registered, and HLR sent out notice of cancellation message to SCC AS, therefore SCC AS know that called terminal is practical in 2G networks, therefore will exhale It cries and chooses the connecting of the domains CS, CS route codes are inserted into before called number, the called number for being sent to S-CSCF is changed to " CS route codes + called number ".
In step S607, S-CSCF routes the call to MGCF (or GMSC (Gateway Mobile according to CS route codes Switching Center, Gateway Mobile Switching Center)).
CS route codes are removed in step S608, MGCF (or GMSC), MAP addressing is initiated to called HLR.
Apply for routing number to service MSC in step S609, HLR.Before this called terminal 2G register, service MSC to HLR initiated registration, therefore HLR applies for routing number to service MSC.
In step S610, service MSC routing number is returned to HLR.
In step S611, HLR routing number is returned to MGCF (or GMSC).
It, will be where call proceeding to called terminal in the routing number that step S612, MGCF (or GMSC) are returned according to HLR Service MSC.
By the above flow, realizes and CS is chosen into the calling domain for the terminal that IMS domain calling terminal dialing is attached to the domains CS The overall process of domain and connecting.
It can be with shown in reference table 1 about SCC AS user data tables.In the table 1, IMSI (International Mobile Subscriber Identity, international mobile subscriber identity), ESN (Electronic Serial Number, Electronics string number), MDN (Mobile Directory Number, mobile subscriber number) be 2G network user identifiers, IMPI (IMS Private User Identity, IMS IP multimedia private identity, is equivalent to IMSI) and IMPU (IMS Public User Identity, IMS IP multimedia pUblic identity, are equivalent to MDN) it is 4G network user identifiers.One terminal is in 2G networks and 4G networks Respectively there is user identifier, SCC AS will identify user to 2G or 4G network messagings using user identifier.SCC AS need to know Road user currently register where domain, it sends REGNOT (registration notification message)/receive CANCREG dependent on the domains CS equipment (notice of cancellation message) message and IMS domain equipment receive registration/logout message to judge domain that user is currently located.Therefore SCC AS Judge domain that user is currently located by being recorded in the message that the domains 2G or 4G finally receive or send.
CFB (Call Forward Busy, call forwarding on busy), CFD (Call Forwarding on Default, it is hidden Containing Call Forwarding comprising CFB and CFNA, it is believed that be Conditional Call Forwarding CCF), CFNA (Call Forward No Answer, no-answer call connection), CFU (Call Forwarding Unconditional, unconditioned call connection), CW (Call Waiting, Call Waiting) is the user's supplementary service information received from HLR, can be used to synchronize supplement industry to IMS domain Business information.
1 SCC AS user data tables of table
MDN
IMSI
ESN
The domains CS login state It sends REGNOT/ and receives CANCREG
IMPI
IMPU
IMS domain login state It receives and registers/receive cancellation
CFB Do not contract/contract but un-activation/swash words:C numbers
CFD Do not contract/contract but un-activation/swash words:C numbers
CFNA Do not contract/contract but un-activation/swash words:C numbers
CFU Do not contract/contract but un-activation/swash words:C numbers
CW Do not contract/contract but un-activation/swash words
Table 2 is User Status and call proceeding rule list.Wherein, the binary digit in table 2 indicates as follows respectively:
11:The calling that the domains the CS beginning exhales, follow-up IMS domain connect.
10:The calling that the IMS domain beginning exhales, the follow-up domains CS connect.
01:The calling that the IMS domain beginning exhales, follow-up IMS domain playback.
00:The calling that the IMS domain beginning exhales, the follow-up domains CS connect.
2 User Status of table and call proceeding rule list
Fig. 7 is the structure chart for schematically showing the system according to an embodiment of the invention for domain selection.Such as Fig. 7 Shown, which may include:IMS domain equipment, the domains CS equipment and SCC AS 710.
Wherein, which is attached to the information of IMS domain 720 when knowing that terminal is attached to IMS domain 720 by SCC AS 710 It sends the domains CS equipment to, or the terminal is attached to when knowing that terminal is attached to the domains 730 CS the information in the domains CS 730 and is sent to IMS domain equipment.
In the case where terminal is attached to IMS domain 720, when this is terminal called, which arrives call anchoring IMS domain 720.Or in the case where terminal is attached to the domains CS 730, when this is terminal called, which will call domain Choose the domains CS 730.
In the system of above-described embodiment, the SCC AS for supporting multi-protocols are introduced, which can retain terminal and work as The status information in preceding accompanying domain.When this is terminal called, IMS domain equipment and the domains CS equipment can inquire SCC AS, according to SCC The result that AS is returned continues to route, the domain replay call accompanying by incoming terminal, to realize between IMS domain and the domains CS Speech business.
In one embodiment, as shown in fig. 7, IMS domain equipment may include S-CSCF 722, the domains CS equipment may include HLR 733.The SCC AS 710 can be docked by Session Initiation Protocol with the S-CSCF 722 of IMS domain.The SCC AS 710 can lead to MAP protocol is crossed to dock with the HLR 733 in the domains CS.
In one embodiment, when terminal is when IMS domain 720 is registered, SCC AS 710 receive the IMS of terminal initiation Domain log-on message, to know that the terminal is attached to IMS domain 720.The SCC AS 710 send IMS domain registration to HLR 733 and lead to Know message, the information which is attached to IMS domain 720 sends the domains CS equipment to.
In one embodiment, when terminal is when the domains CS 730 are registered, SCC AS 710 receive the domains CS from HLR 733 and note Notification message is sold, to know that the terminal is attached to the domains CS 730.The SCC AS 710 are adhered to the terminal by S-CSCF 722 Information in the domains CS 730 sends IMS domain equipment to.
In one embodiment, IMS domain equipment can also include:MGCF, I-CSCF, HSS and P-CSCF, the domains CS equipment is also May include:Originating MS C.When terminal called, originating MS C obtains IMS route codes and called number through HLR from SCC AS.It should Originating MS C routes the call to the MGCF of IMS domain according to the IMS route codes received and called number.The MGCF is according to IMS Route code routes the call to I-CSCF, and removes IMS route codes, retains called number.The I-CSCF is obtaining use from HSS Behind the addresses S-CSCF that family is distributed when registering, the S-CSCF is routed the call to.The S-CSCF is by P-CSCF by call routing To terminal.
In one embodiment, IMS domain equipment can also include:MGCF, I-CSCF and HSS, the domains CS equipment can also wrap It includes:Service MSC.When terminal called, calling is routed to the I-CSCF that terminal user is belonged to.The I-CSCF is obtained from HSS The addresses S-CSCF distributed when end-user registration, and route the call to the S-CSCF.S-CSCF triggerings are called domain choosing, will Call routing is to SCC AS.The SCC AS return to CS route codes and called number to the S-CSCF.The S-CSCF is route according to CS Code routes the call to MGCF.The MGCF removes CS route codes, and obtains routing number by the service MSC where HLR from terminal Code, and according to the routing number by call proceeding to service MSC.
Fig. 8 is the structure chart for schematically showing SCC AS according to an embodiment of the invention.As shown in figure 8, the SCC AS 710 may include:Receiving unit 711, storage unit 712, transmission unit 713 and calling unit 714.
The receiving unit 711 is used to receive that terminal to be attached to the information of IMS domain or terminal is attached to the information in the domains CS.
The storage unit 712 is used to store that terminal to be attached to the information of IMS domain or terminal is attached to the information in the domains CS.
The information that the transmission unit 713 is used to terminal being attached to IMS domain sends the domains CS equipment to, or terminal is adhered to Information in the domains CS sends IMS domain equipment to.
The calling unit 714 is used in the case where terminal is attached to IMS domain, and when terminal called, call anchoring is arrived IMS domain;Or in the case where terminal is attached to the domains CS, when terminal called, the domains CS are chosen into calling domain.
In above-described embodiment, the speech business between IMS domain and the domains CS is realized by SCC AS.
In one embodiment, IMS domain equipment may include S-CSCF, and the domains CS equipment may include HLR.As shown in figure 8, The SCC AS 710 can also include:First interface 715 and second interface 716.The first interface 715 can pass through Session Initiation Protocol It is docked with the S-CSCF of IMS domain.The second interface 716 can be docked by MAP protocol with the HLR in the domains CS.
In one embodiment, when terminal is when IMS domain is registered, receiving unit 711 receives the IMS domain note of terminal initiation Volume information, to know that the terminal is attached to the IMS domain.Transmission unit 713 sends IMS domain registration notification message to HLR, will The information that the terminal is attached to IMS domain sends the domains CS equipment to.
In one embodiment, when terminal is when the domains CS are registered, receiving unit 711 receives the domains CS notice of cancellation from HLR Message, to know that the terminal is attached to the domains CS.The terminal is attached to the letter in the domains CS by S-CSCF by transmission unit 713 Breath sends IMS domain equipment to.
In one embodiment, IMS domain equipment can also include:MGCF, I-CSCF, HSS and P-CSCF, the domains CS equipment is also May include:Originating MS C.When (being attached to IMS domain) is terminal called, originating MS C obtains IMS through HLR from calling unit 714 Route code and called number.Originating MS C routes the call to IMS domain according to the IMS route codes received and called number MGCF.The MGCF routes the call to I-CSCF according to IMS route codes, and removes the IMS route codes, retains called number.It should Behind the addresses S-CSCF that I-CSCF is distributed when obtaining user's registration from HSS, S-CSCF is routed the call to.The S-CSCF passes through P-CSCF routes the call to terminal.
In one embodiment, IMS domain equipment can also include:MGCF, I-CSCF and HSS, the domains CS equipment can also wrap It includes:Service MSC.When (being attached to the domains CS) is terminal called, calling is routed to the I-CSCF that terminal user is belonged to.The I- The addresses S-CSCF that CSCF is distributed when obtaining end-user registration from HSS, and route the call to the S-CSCF.The S-CSCF is touched Hair is called domain choosing, routes the call to calling unit 714.The calling unit 714 returns to CS route codes and called number to S-CSCF Code.The S-CSCF routes the call to MGCF according to CS route codes.The MGCF removes the CS route codes, and by HLR from terminal The service MSC at place obtains routing number, and according to the routing number by call proceeding to servicing MSC.
So far, the present invention is described in detail.In order to avoid the design of the masking present invention, it is public that this field institute is not described Some details known.Those skilled in the art as described above, can be appreciated how to implement technology disclosed herein completely Scheme.
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for the method Merely to illustrate, the step of method of the invention, is not limited to sequence described in detail above, special unless otherwise It does not mentionlet alone bright.In addition, in some embodiments, also the present invention can be embodied as to record program in the recording medium, these programs Include for realizing machine readable instructions according to the method for the present invention.Thus, the present invention also covers storage for executing basis The recording medium of the program of the method for the present invention.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field Art personnel it should be understood that above example merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair Bright range is defined by the following claims.

Claims (18)

1. a kind of method for domain selection, which is characterized in that including:
Service set and application server for continuity SCC AS are when knowing that terminal is attached to IP multimedia subsystem IMS domain by institute It states terminal and is attached to the information of the IMS domain and send circuit-switched CS domain equipment to, or when knowing that the terminal is attached to CS The information that the terminal is attached to the domains CS when domain sends IMS domain equipment to;And
In the case where the terminal is attached to the IMS domain, when described terminal called, the SCC AS arrive call anchoring The IMS domain;Or in the case where the terminal is attached to the domains CS, when described terminal called, the SCC AS will Choose the domains CS in calling domain.
2. according to the method described in claim 1, it is characterized in that,
Wherein, the service call conversation control function S- that the SCC AS pass through session initiation protocol Session Initiation Protocol and the IMS domain HLR pairs of the home location register that CSCF is docked and the SCC AS pass through mobile application section MAP protocol and the domains CS It connects.
3. according to the method described in claim 2, it is characterized in that, SCC AS will when knowing that terminal is attached to the IMS domain The step of information that the terminal is attached to the IMS domain sends the domains CS equipment to include:
When the terminal is when the IMS domain is registered, the SCC AS receive the IMS domain log-on message that the terminal is initiated, To know that the terminal is attached to the IMS domain;And
The SCC AS send IMS domain registration notification message to the HLR, and the terminal is attached to the letter of the IMS domain Breath sends the domains CS equipment to.
4. according to the method described in claim 2, it is characterized in that, SCC AS when knowing that the terminal is attached to the domains CS by institute It states terminal and is attached to the step of the information in the domains CS sends IMS domain equipment to and include:
When the terminal is when the domains CS are registered, the SCC AS receive the domains CS notice of cancellation message from the HLR, to Know that the terminal is attached to the domains CS;And
The information that the terminal is attached to the domains CS by the S-CSCF by the SCC AS sends the IMS domain to and sets It is standby.
5. according to the method described in claim 3, it is characterized in that, in the case where the terminal is attached to the IMS domain, when When described terminal called, call anchoring to the step of IMS domain is included by the SCC AS:
When described terminal called, originate moving exchanging center MSC through the HLR from the SCC AS obtain IMS route codes and Called number;
The originating MS C routes the call to the IMS domain according to the IMS route codes received and the called number Media Gateway Control Function MGCF;
The MGCF routes the call to enquiry call conversation control function I-CSCF, and remove institute according to the IMS route codes IMS route codes are stated, the called number is retained;
Behind the addresses S-CSCF that the I-CSCF is distributed when obtaining user's registration from home signature user server HSS, it will exhale It cries and is routed to the S-CSCF;And
The S-CSCF routes the call to the terminal by Proxy Call Session Control Function P-CSCF.
6. according to the method described in claim 4, it is characterized in that, in the case where the terminal is attached to the domains CS, when When described terminal called, the SCC AS include by the step of domains CS are chosen in domain is called:
When described terminal called, calling is routed to the I-CSCF that terminal user is belonged to;
The addresses S-CSCF that the I-CSCF is distributed when obtaining the end-user registration from HSS, and route the call to described S-CSCF;
The S-CSCF triggerings are called domain choosing, route the call to the SCC AS;
The SCC AS return to CS route codes and called number to the S-CSCF;
The S-CSCF routes the call to MGCF according to the CS route codes;And
The MGCF removes the CS route codes, and obtains routing number by the service MSC where the HLR from the terminal Code, and according to the routing number by call proceeding to the service MSC.
7. a kind of SCC AS, which is characterized in that including:
Receiving unit, for receiving, terminal is attached to the information of IMS domain or the terminal is attached to the information in the domains CS;
Storage unit, for storing, the terminal is attached to the information of IMS domain or the terminal is attached to the information in the domains CS;
Transmission unit, the information for the terminal to be attached to the IMS domain send the domains CS equipment to, or by the terminal The information for being attached to the domains CS sends IMS domain equipment to;
Calling unit, in the case where the terminal is attached to the IMS domain, when described terminal called, by call anchor Surely the IMS domain is arrived;Or in the case where the terminal is attached to the domains CS, when described terminal called, domain will be called Choose the domains CS.
8. SCC AS according to claim 7, which is characterized in that
The IMS domain equipment includes S-CSCF, and the domains CS equipment includes HLR;
SCC AS further include:
First interface is docked by Session Initiation Protocol with the S-CSCF of IMS domain;And
Second interface is docked by MAP protocol with the HLR in the domains CS.
9. SCC AS according to claim 8, which is characterized in that
Wherein, when the terminal is when the IMS domain is registered, the receiving unit receives the IMS domain note that the terminal is initiated Volume information, to know that the terminal is attached to the IMS domain;And
The transmission unit sends IMS domain registration notification message to the HLR, and the terminal is attached to the IMS domain Information sends the domains CS equipment to.
10. SCC AS according to claim 8, which is characterized in that
Wherein, when the terminal is when the domains CS are registered, the receiving unit receives the domains CS notice of cancellation from the HLR and disappears Breath, to know that the terminal is attached to the domains CS;And
The information that the terminal is attached to the domains CS by the S-CSCF by the transmission unit sends the IMS domain to and sets It is standby.
11. SCC AS according to claim 9, which is characterized in that
The IMS domain equipment further includes:MGCF, I-CSCF, HSS and P-CSCF, the domains CS equipment further include:Originating MS C;
Wherein, when described terminal called, originating MS C obtains IMS route codes and called number through the HLR from the calling unit Code;
The originating MS C routes the call to the IMS domain according to the IMS route codes received and the called number MGCF;
The MGCF routes the call to I-CSCF according to the IMS route codes, and removes the IMS route codes, described in reservation Called number;
Behind the addresses S-CSCF that the I-CSCF is distributed when obtaining user's registration from the HSS, the S- is routed the call to CSCF;And
The S-CSCF routes the call to the terminal by P-CSCF.
12. SCC AS according to claim 10, which is characterized in that
The IMS domain equipment further includes:MGCF, I-CSCF and HSS, the domains CS equipment further include:Service MSC;
Wherein, when described terminal called, calling is routed to the I-CSCF that terminal user is belonged to;
The addresses S-CSCF that the I-CSCF is distributed when obtaining the end-user registration from the HSS, and route the call to The S-CSCF;
The S-CSCF triggerings are called domain choosing, route the call to the calling unit;
The calling unit returns to CS route codes and called number to the S-CSCF;
The S-CSCF routes the call to MGCF according to the CS route codes;And
The MGCF removes the CS route codes, and obtains routing number by the service MSC where the HLR from the terminal Code, and according to the routing number by call proceeding to the service MSC.
13. a kind of system for domain selection, which is characterized in that including:
IMS domain equipment, the domains CS equipment and SCC AS;
Wherein, the terminal is attached to the information transmission of the IMS domain when knowing that terminal is attached to the IMS domain by SCC AS The domains CS equipment is given, or the terminal is attached to when knowing that the terminal is attached to the domains CS the information in the domains CS and is sent to IMS domain equipment;And
In the case where the terminal is attached to the IMS domain, when described terminal called, the SCC AS arrive call anchoring The IMS domain;Or in the case where the terminal is attached to the domains CS, when described terminal called, the SCC AS will Choose the domains CS in calling domain.
14. system according to claim 13, which is characterized in that
The IMS domain equipment includes S-CSCF, and the domains CS equipment includes HLR;
Wherein, the SCC AS are docked by Session Initiation Protocol with the S-CSCF of the IMS domain and the SCC AS pass through MAP protocol is docked with the HLR in the domains CS.
15. system according to claim 14, which is characterized in that
Wherein, when the terminal is when the IMS domain is registered, the SCC AS receive the IMS domain registration that the terminal is initiated Information, to know that the terminal is attached to the IMS domain;And
The SCC AS send IMS domain registration notification message to the HLR, and the terminal is attached to the letter of the IMS domain Breath sends the domains CS equipment to.
16. system according to claim 14, which is characterized in that
Wherein, when the terminal is when the domains CS are registered, the SCC AS receive the domains CS notice of cancellation from the HLR and disappear Breath, to know that the terminal is attached to the domains CS;And
The information that the terminal is attached to the domains CS by the S-CSCF by the SCC AS sends the IMS domain to and sets It is standby.
17. system according to claim 15, which is characterized in that
The IMS domain equipment further includes:MGCF, I-CSCF, HSS and P-CSCF, the domains CS equipment further include:Originating MS C;
Wherein, when described terminal called, originating MS C obtains IMS route codes and called number through the HLR from the SCC AS Code;
The originating MS C routes the call to the IMS domain according to the IMS route codes received and the called number MGCF;
The MGCF routes the call to I-CSCF according to the IMS route codes, and removes the IMS route codes, described in reservation Called number;
Behind the addresses S-CSCF that the I-CSCF is distributed when obtaining user's registration from HSS, the S-CSCF is routed the call to; And
The S-CSCF routes the call to the terminal by P-CSCF.
18. system according to claim 16, which is characterized in that
The IMS domain equipment further includes:MGCF, I-CSCF and HSS, the domains CS equipment further include:Service MSC;
Wherein, when described terminal called, calling is routed to the I-CSCF that terminal user is belonged to;
The addresses S-CSCF that the I-CSCF is distributed when obtaining the end-user registration from HSS, and route the call to described S-CSCF;
The S-CSCF triggerings are called domain choosing, route the call to the SCC AS;
The SCC AS return to CS route codes and called number to the S-CSCF;
The S-CSCF routes the call to MGCF according to the CS route codes;And
The MGCF removes the CS route codes, and obtains routing number by the service MSC where the HLR from the terminal Code, and according to the routing number by call proceeding to the service MSC.
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