CN109474971A - Call method, apparatus, equipment and the storage medium of roaming service customer - Google Patents
Call method, apparatus, equipment and the storage medium of roaming service customer Download PDFInfo
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- CN109474971A CN109474971A CN201910006356.9A CN201910006356A CN109474971A CN 109474971 A CN109474971 A CN 109474971A CN 201910006356 A CN201910006356 A CN 201910006356A CN 109474971 A CN109474971 A CN 109474971A
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- telephone number
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
Abstract
The embodiment of the present application provides a kind of method, apparatus, equipment and storage medium for calling roaming service customer, the call request that this method is issued by obtaining VoLTE user, it include the telephone number carried the number of taking that other places roams outside and turn network users in call request, and the routing iinformation of telephone number place network is inquired based on call request, it is routed the call on call conversation control function entity and telephone number institute interconnection network element between networks based on the routing iinformation, so that the interconnection network element carries the calling that VoLTE user turns network users to the number of taking.Solve the problems, such as that the number of taking turns to have ensured the normal use of user so that user can communicate carrying other places roaming outside with VoLTE user as called calling when network users carry other places roaming outside.
Description
Technical field
The invention relates to field of communication technology more particularly to a kind of method, apparatus, equipment for calling roaming service customer
And storage medium.
Background technique
Fig. 1 is that a kind of number of taking in circuit domain (CS) audio call that the prior art provides turns network users as called subscriber
Solution architecture diagram, as shown in Figure 1, the user of first movement operator turns network users as the calling subscriber calls number of taking
When, the visited mobile switching center (VMSC) of the first operator is asked to the old home location register of called number (HLR) initiation
The request of routing iinformation (SRI) is asked, old HLR Provides Roaming Number to local number portability mobile switching centre (NPMSC) transmission
(PRN) request, NPMSC return to pseudo- roaming number (MSRN) wherein to old HLR, and MSRN includes the information of wireless network (RN)
With mobile subscriber ISDN number (MSISDN), old HLR returns to MSRN to VMSC, and VMSC is according to the RN in MSRN by call diversion
To the global system for mobile communications (GMSC) of caller, the GMSC of caller is according to RN by call diversion to called second mobile operator
GMSC, it is subsequent according to normal SRI flow processing, complete calling.
By Fig. 1 prior art provided it is found that the prior art, which only gives the number of taking in CS audio call, turns network users work
For the solution of called subscriber, do not provide for VoLTE user as caller, the number of taking for carrying other places roaming outside turns net
User is as called solution.
Summary of the invention
The embodiment of the present application provides a kind of method, apparatus, equipment and storage medium for calling roaming service customer, takes to solve
Number turn calling problem when VoLTE user is as caller in network service, so that user can also be with when carrying other places roaming outside
VoLTE is communicated.
The embodiment of the present application first aspect provides a kind of method for calling roaming service customer, comprising:
Call conversation control function entity obtains the call request that VoLTE user issues, and includes taking in the call request
The number of taking for arriving other places roaming out turns the telephone number of network users；
The call conversation control function entity is based on the call request, the road of network where inquiring the telephone number
By information；
The call conversation control function entity is based on the routing iinformation, routes the call to the Call-Establish-Success rate
On functional entity and telephone number institute interconnection network element between networks, described in being carried by the interconnection network element
VoLTE user turns the calling of network users to the number of taking.
The embodiment of the present application second aspect provides a kind of call session control device, comprising:
Module is obtained, includes carrying outside to other places in the call request for obtaining the call request of VoLTE user's sending
The number of taking of roaming turns the telephone number of network users；
Enquiry module, for being based on the call request, the routing iinformation of network where inquiring the telephone number；
Routing module, for be based on the routing iinformation, route the call to the call conversation control function entity with
The telephone number on interconnection network element between networks, to carry the VoLTE user to institute by the interconnection network element
State the calling that the number of taking turns network users.
The embodiment of the present application third aspect provides a kind of Call-Establish-Success rate equipment, comprising:
Processor；
Memory, for storing the executable instruction of the processor；
When the processor executes the executable instruction, method described in above-mentioned first aspect can be executed.
The embodiment of the present application fourth aspect provides a kind of computer readable storage medium, is stored thereon with computer program,
The method as described in above-mentioned first aspect is realized when the program is executed by processor.
Based on aspects above, the embodiment of the present application, which passes through, obtains the call request that VoLTE user issues, in call request
The number of taking including carrying other places roaming outside turns the telephone number of network users, and inquires telephone number place net based on call request
The routing iinformation of network, network where routing the call to call conversation control function entity and telephone number based on the routing iinformation
Between interconnection network element on so that interconnection network element carrying VoLTE user turns the callings of network users to the number of taking.It solves the number of taking to turn
As called calling problem when network users carry other places roaming outside, so that user can be with carrying other places roaming outside
VoLTE user communicates, and has ensured the normal use of user.
It should be appreciated that content described in foregoing invention content part is not intended to limit the pass of embodiments herein
Key or important feature, it is also non-for limiting scope of the present application.The other feature of this public affairs application will be become by description below
It is readily appreciated that.
Detailed description of the invention
Fig. 1 is that a kind of number of taking in circuit domain (CS) audio call that the prior art provides turns network users as called subscriber
Solution architecture diagram；
Fig. 2 is a kind of call scenario schematic diagram provided by the embodiments of the present application；
Fig. 3 is a kind of flow chart of method for calling roaming service customer provided in this embodiment；
Fig. 4 is a kind of execution method flow diagram of step 102 provided by the embodiments of the present application；
Fig. 5 is a kind of execution method flow diagram of step 102 provided by the embodiments of the present application；
Fig. 6 is a kind of execution method flow diagram of step 102 provided by the embodiments of the present application；
Fig. 7 is a kind of structural schematic diagram of call session control device provided by the embodiments of the present application.
Specific embodiment
Embodiments herein is more fully described below with reference to accompanying drawings.Although showing that the application's is certain in attached drawing
Embodiment, it should be understood that, the application can be realized by various forms, and should not be construed as being limited to this
In the embodiment that illustrates, providing these embodiments on the contrary is in order to more thorough and be fully understood by the application.It should be understood that
It is that being given for example only property of the accompanying drawings and embodiments effect of the application is not intended to limit the protection scope of the application.
The specification and claims of the embodiment of the present application and the term " first " in above-mentioned attached drawing, " second ", "
Three ", the (if present)s such as " 4th " are to be used to distinguish similar objects, without for describing specific sequence or successive time
Sequence.It should be understood that the data used in this way are interchangeable under appropriate circumstances, for example so as to the embodiment of the present application described herein
It can be performed in other sequences than those illustrated or described herein.In addition, term " includes " and " having " and he
Any deformation, it is intended that cover it is non-exclusive include, for example, contain the process, method of a series of steps or units,
System, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include being not clearly listed
Or the other step or units intrinsic for these process, methods, product or equipment.
Fig. 2 is a kind of call scenario schematic diagram provided by the embodiments of the present application, includes that call session functions control is real in Fig. 2
Other networks 23, Yi Jihu except body 20, telephone number mapping server/domain name system 21 (ENUM/DNS), caller network
It is the interconnection network element 22 between interactive function controlled entity 20 and network 23.Wherein caller is VoLTE user, is called to carry outside
The number of taking of other places roaming turns network users, and it is network 23 that the number of taking, which turns the network that network users are carried outside, and the VoLTE user of caller is to the number of taking
When turning network users and being called, call session functions controlled entity 20 first obtains the number of taking from ENUM/DNS 21 and turns network users institute
In the routing iinformation of network 23, further, then it is based on the routing iinformation and routes the call to call session functions controlled entity
On interconnection network element between 20 and network 23, VoLTE user is carried by the interconnection network element, entirely exhaling for network users is turned to the number of taking
It is process.Even if to the number of taking turn network users carry outside other places roaming can be used as it is called converse with VoLTE user, mention
High user experience.
Technical scheme is described in detail combined with specific embodiments below:
Fig. 3 is a kind of flow chart of method for calling roaming service customer provided in this embodiment, as shown in figure 3, this method packet
Include following steps:
Step 101, call conversation control function entity obtain the call request that VoLTE user issues, the call request
In include carrying the number of taking of other places roaming outside to turn the telephone numbers of network users.
The present embodiment turns to need to complete corresponding base before network users are conversed as caller in VoLTE user with the number of taking
This calling procedure, initial session protocol (SIP) related signaling process and normal IP multimedia subsystem in VoLTE call setup
(IMS) process called is identical, specific as follows:
When S1, VoLTE user initiate calling, Xiang Jizhan initiating business request message；
S2, base station are to mobile management entity forwarding service request message；According to the strategy of operator, safe mistake can be executed
Journey；
S3, mobile management entity establish request Concurrency to base station initiation wireless connection and send VoLTE user message；Base station is established
Relevant radio bearer；
S4, VoLTE user send upstream data invitation message to base station；
S5, base station forwarding invitation message are to gateway；
S6, gateway forwarding invitation message are sent to proxy gateway；
S7, gateway forwarding invitation message are to call conversation control function entity；
S8, base station, which reply to be wirelessly connected to mobile management entity, establishes request response；
S9, mobile management entity send bearing modification message to gateway, hereafter gateway can send lower line number
According to base station；
S10, gateway are based on subscription situation and decide whether to initiate bearing modification process to proxy gateway；
S11, proxy gateway reply bearing modification response message to gateway；
S12, gateway reply bearing modification response message to mobile management entity；
Message related to calls invitation is sent to network side by S13, call conversation control function entity；
S14, call conversation control function entity carry out updating location information, and receive call conversation control function entity
Response.
It certainly is only the summary to initial session protocol (SIP) related signaling process in VoLTE call setup here, if
There is not most place can be with reference to the process of existing IMS calling.
Step 102, the call conversation control function entity are based on the call request, inquire where the telephone number
The routing iinformation of network.
Wherein, in the routing iinformation of network where inquiring the number of taking and turning network users, adoptable method has more the present embodiment
Kind:
In a kind of possible design, call session control function can be from preset telephone number mapping server/domain
The routing iinformation of network where the name system queries number of taking turns network users, wherein telephone number mapping server/domain name system master
Want function as follows:
1, this network users is obtained by charge system and carries information outside；
2, the number of taking turns network users information between obtaining and updating other operators, such as: China Mobile's user's number of taking turns net and arrives
China Telecom needs to save its mobile station international member identification code, route code；
If 3, not storing the corresponding number of taking of the user turns net information, the corresponding route code of the user is the user institute
Possess the route code of network.
In alternatively possible design, call session control function can also be special for storing routing letter from other
The routing iinformation of network where the number of taking turns network users is searched in the equipment of breath.For example, establishing a special equipment for obtaining
And the number of taking of storage user turns net information, the routing iinformation including turning network where user after netting, when VoLTE user calls the number of taking
When turning network users, the routing iinformation of network where the number of taking turns network users is obtained from the equipment.
Step 103, the call conversation control function entity are based on the routing iinformation, route the call to the calling
Conversation control function entity and the telephone number on interconnection network element between networks, to be carried by the interconnection network element
The VoLTE user turns the calling of network users to the number of taking.
Optionally, the present embodiment can also include following process after routing the call on interconnection network element:
S17. called Temporary Response message is forwarded to call conversation control function entity by network side；
S18. call conversation control function entity sends media information to strategy and charging regulation function entity；
S19. strategy and charging regulation function entity are sent to proxy gateway authenticates access request message, issues relevant plan
Slightly control and charging message；
S20. proxy gateway sends dedicated bearing to gateway and establishes request message；
S21. gateway sends dedicated bearer to mobile management entity and establishes request message；
S22. mobile management entity sends carrying to base station and establishes message/session management messages；
S23. base station initiates wireless heterogeneous networks connection to reconfigure request (to include that dedicated bearer is built to VoLTE user
Vertical request)；
S24.VoLTE user reconfigures to base station transmission wireless heterogeneous networks connection and completes message；
S25. base station sends carrying to mobile management entity and establishes response message；
S26.VoLTE user sends direct-sending message to base station, and instruction dedicated bearer is successfully established；
S27. base station sends session management messages to mobile management entity；
S28. mobile management entity replys carrying to gateway and establishes response message；
S29. gateway replys carrying to proxy gateway and establishes response message；
S30. proxy gateway to call conversation control function entity reply certification access response message, indicate policy control and
Charging policy executes completion；
S31. call conversation control function entity replys certification message to Session Border Controller, has confirmed relevant resource
Through being ready to complete；
S32. Temporary Response is transmitted to the response process of user and message by call conversation control function entity；
S33. Calling Side initiation update media consultation process, call conversation control function entity processing forward conversation message,
Media information is sent after the completion of response to call conversation control function entity, call conversation control function entity completes IP connection
Property carrying control operation；
S34. the process that called subscriber's ALERTING message is forwarded to caller from called network and is responded；
S35. called subscriber's off-hook response message is forwarded to the process of caller from called network.
Wherein, the process of S17-S35 similarly to the prior art, wherein to the greatest extent place may refer to the prior art, herein
It repeats no more.
The present embodiment, which passes through, obtains the call request that VoLTE user issues, and includes carrying other places outside to roam in call request
The number of taking turn the telephone numbers of network users, and the routing iinformation of network where inquiring the telephone number based on call request is based on
The routing iinformation route the call to call conversation control function entity and telephone number on interconnection network element between networks,
So that interconnection network element carrying VoLTE user turns the calling of network users to the number of taking.It solves the number of taking and turns network users and carry outside to other places
As called calling problem when roaming, so that user can communicate carrying other places roaming outside with VoLTE user,
The normal use of user is ensured.
Above-described embodiment is further extended and optimized below with reference to specific example.
Fig. 4 is a kind of execution method flow diagram of step 102 provided by the embodiments of the present application, as shown in figure 4, in Fig. 3 reality
On the basis of applying example, step 102 includes:
Step 201, the call conversation control function entity are based on the call request, inquire where the telephone number
The domain name of network.
The domain of network where turning network users by telephone number mapping server/Domain Name System query number of taking in the present embodiment
Name, specifically, call conversation control function entity first initiates inquiry request to telephone number mapping server/domain name system, and
The number of taking described in carrying in the inquiry request turns the telephone number of network users, and telephone number mapping server/domain name system is connecing
After the inquiry request for receiving call conversation control function entity transmission, refer in the corresponding Naming Authority of telephone number being locally stored
The domain name of network where the telephone number is obtained in needle record, and after finding the domain name again, which is sent to calling meeting
Talk about control function entity.
Step 202, based on the corresponding relationship between pre-stored routing iinformation and domain name, determine that domain name is corresponding
Routing iinformation.
It can store the corresponding relationship between routing iinformation and domain name in the present embodiment in call conversation control function entity,
, can be with corresponding relationship according to the pre-stored data after call session obtains the domain name of network where the number of taking turns network users, determining should
The corresponding routing iinformation of domain name.Certainly this is a kind of possible mode, telephone number mapping server/domain in other modes
Domain name and the corresponding routing iinformation of domain name directly can also be fed back to call conversation control function entity by name system.
The present embodiment, which passes through, obtains the call request that VoLTE user issues, and includes carrying other places outside to roam in call request
The number of taking turn the telephone numbers of network users, and the routing iinformation of network where inquiring the telephone number based on call request is based on
The routing iinformation route the call to call conversation control function entity and telephone number on interconnection network element between networks,
So that interconnection network element carrying VoLTE user turns the calling of network users to the number of taking.It solves the number of taking and turns network users and carry outside to other places
As called calling problem when roaming, so that user can communicate carrying other places roaming outside with VoLTE user,
The normal use of user is ensured.
Fig. 5 is a kind of execution method flow diagram of step 102 provided by the embodiments of the present application, as shown in figure 5, in Fig. 3 reality
On the basis of applying example, step 102 includes:
Step 301, the call conversation control function entity inquire institute from telephone number mapping server/domain name system
The mark of operator where stating telephone number and the mark for being currently located province.
The mark of step 302, the mark based on the operator and the province determines the corresponding telephone number institute
In the routing iinformation of network.
The mark of telephone number Yu place operator is stored in the present embodiment in telephone number mapping server/domain name system
Incidence relation between knowledge and the mark in place province, in the inquiry request for receiving call conversation control function entity,
Telephone number mapping server/domain name system returns to fortune where the telephone number according to the telephone number carried in inquiry request
Seek the mark of quotient and the mark in place province so that call conversation control function entity according to the mark of the operator and
The mark in the province determines the routing iinformation of network where the number of taking turns network users.
The present embodiment, which passes through, obtains the call request that VoLTE user issues, and includes carrying other places outside to roam in call request
The number of taking turn the telephone numbers of network users, and the routing iinformation of network where inquiring the telephone number based on call request is based on
The routing iinformation route the call to call conversation control function entity and telephone number on interconnection network element between networks,
So that interconnection network element carrying VoLTE user turns the calling of network users to the number of taking.It solves the number of taking and turns network users and carry outside to other places
As called calling problem when roaming, so that user can communicate carrying other places roaming outside with VoLTE user,
The normal use of user is ensured.
Fig. 6 is a kind of execution method flow diagram of step 102 provided by the embodiments of the present application, as shown in fig. 6, in Fig. 3 reality
On the basis of applying example, step 102 includes:
Step 401, the call conversation control function entity send routing to telephone number mapping server/domain name system
Information inquiring request.
Step 402, the call conversation control function entity receive the telephone number mapping server/domain name system base
In the query information character string that the inquiry request returns, the query information character string includes the telephone number and described
The routing iinformation of network where telephone number.
Wherein, the positional relationship of routing iinformation and telephone number in query information character string, which can according to need, is set
Fixed, the present embodiment does not limit.
The present embodiment, which passes through, obtains the call request that VoLTE user issues, and includes carrying other places outside to roam in call request
The number of taking turn the telephone numbers of network users, and the routing iinformation of network where inquiring the telephone number based on call request is based on
The routing iinformation route the call to call conversation control function entity and telephone number on interconnection network element between networks,
So that interconnection network element carrying VoLTE user turns the calling of network users to the number of taking.It solves the number of taking and turns network users and carry outside to other places
As called calling problem when roaming, so that user can communicate carrying other places roaming outside with VoLTE user,
The normal use of user is ensured.
Fig. 7 is a kind of structural schematic diagram of call session control device provided by the embodiments of the present application, as shown in fig. 7, should
Device 70 includes:
Obtain module 71, include for obtaining the call request of VoLTE user's sending, in the call request carry outside it is outer
The number of taking of ground roaming turns the telephone number of network users；
Enquiry module 72, for being based on the call request, the routing iinformation of network where inquiring the telephone number；
Routing module 73 routes the call to the call conversation control function entity for being based on the routing iinformation
With the telephone number on interconnection network element between networks, to carry the VoLTE user couple by the interconnection network element
The number of taking turns the calling of network users.
Optionally, the enquiry module 72, comprising:
First inquiry submodule, for being based on the call request, the domain name of network where inquiring the telephone number；
First determines submodule, for determining institute based on the corresponding relationship between pre-stored routing iinformation and domain name
State the corresponding routing iinformation of domain name.
Optionally, the first inquiry submodule, is specifically used for:
Inquiry request is initiated to telephone number mapping server/domain name system, includes the number of taking in the inquiry request
Turn the telephone number of network users, so that telephone number mapping server/domain name system is from the corresponding name of the telephone number
Claim the domain name of network where obtaining the telephone number in Authority Pointer record；
Receive the domain name that the telephone number mapping server/domain name system returns.
Optionally, the enquiry module 72, comprising:
Second inquiry submodule, for inquiring the telephone number institute from telephone number mapping server/domain name system
Operator mark and be currently located the mark in province；
Second determines submodule, for the mark of mark and the province based on the operator, determines corresponding institute
The routing iinformation of network where stating telephone number.
Optionally, the enquiry module 72, comprising:
Sending submodule, for sending route information query request to telephone number mapping server/domain name system；
Receiving submodule is returned for receiving the telephone number mapping server/domain name system based on the inquiry request
The query information character string returned, the query information character string include network where the telephone number and the telephone number
Routing iinformation.
Device provided in this embodiment can be used in the method for executing above-mentioned any embodiment, executive mode and beneficial effect
Fruit is seemingly repeating no more herein.
The embodiment of the present application also provides a kind of Call-Establish-Success rate equipment, comprising: processor；
Memory, for storing the executable instruction of the processor；When the processor executes the executable instruction
When method described in any of the above-described embodiment may be implemented.
The embodiment of the present application is also provided in a kind of computer readable storage medium, is stored thereon with computer program, the journey
Method described in any of the above-described embodiment is realized when sequence is executed by processor.
Function described herein can be executed at least partly by one or more hardware logic components.Example
Such as, without limitation, the hardware logic component for the exemplary type that can be used includes: field programmable gate array (FPGA), dedicated
Integrated circuit (ASIC), Application Specific Standard Product (ASSP), the system (SOC) of system on chip, load programmable logic device
(CPLD) etc..
For implement disclosed method program code can using any combination of one or more programming languages come
It writes.These program codes can be supplied to the place of general purpose computer, special purpose computer or other programmable data processing units
Device or controller are managed, so that program code makes defined in flowchart and or block diagram when by processor or controller execution
Function/operation is carried out.Program code can be executed completely on machine, partly be executed on machine, as stand alone software
Is executed on machine and partly execute or executed on remote machine or server completely on the remote machine to packet portion.
In the context of the disclosure, machine readable media can be tangible medium, may include or is stored for
The program that instruction execution system, device or equipment are used or is used in combination with instruction execution system, device or equipment.Machine can
Reading medium can be machine-readable signal medium or machine-readable storage medium.Machine readable media can include but is not limited to electricity
Son, magnetic, optical, electromagnetism, infrared or semiconductor system, device or equipment or above content any conjunction
Suitable combination.The more specific example of machine readable storage medium will include the electrical connection of line based on one or more, portable meter
Calculation machine disk, hard disk, random access memory (RAM), read-only memory (ROM), Erasable Programmable Read Only Memory EPROM (EPROM
Or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage facilities or
Any appropriate combination of above content.
Although this should be understood as requiring operating in this way with shown in addition, depicting each operation using certain order
Certain order out executes in sequential order, or requires the operation of all diagrams that should be performed to obtain desired result.
Under certain environment, multitask and parallel processing be may be advantageous.Similarly, although containing several tools in being discussed above
Body realizes details, but these are not construed as the limitation to the scope of the present disclosure.In the context of individual embodiment
Described in certain features can also realize in combination in single realize.On the contrary, in the described in the text up and down individually realized
Various features can also realize individually or in any suitable subcombination in multiple realizations.
Although having used specific to this theme of the language description of structure feature and/or method logical action, answer
When understanding that theme defined in the appended claims is not necessarily limited to special characteristic described above or movement.On on the contrary,
Special characteristic described in face and movement are only to realize the exemplary forms of claims.
Claims (12)
1. a kind of method for calling roaming service customer characterized by comprising
Call conversation control function entity obtains the call request that VoLTE user issues, and includes carrying outside in the call request
The number of taking of other places roaming turns the telephone number of network users；
The call conversation control function entity is based on the call request, the routing letter of network where inquiring the telephone number
Breath；
The call conversation control function entity is based on the routing iinformation, routes the call to the call session control function
On entity and telephone number institute interconnection network element between networks, to carry the VoLTE use by the interconnection network element
Family turns the calling of network users to the number of taking.
2. the method according to claim 1, wherein the call conversation control function entity is based on the calling
Request, the routing iinformation of network where inquiring the telephone number, comprising:
The call conversation control function entity is based on the call request, the domain name of network where inquiring the telephone number；
Based on the corresponding relationship between pre-stored routing iinformation and domain name, the corresponding routing iinformation of domain name is determined.
3. according to the method described in claim 2, it is characterized in that, the call conversation control function entity is based on the calling
Request, the domain name of network where inquiring the telephone number, comprising:
The call conversation control function entity initiates inquiry request to telephone number mapping server/domain name system, described to look into
Asking includes telephone number that the number of taking turns network users in request so that telephone number mapping server/domain name system from
The domain name of network where obtaining the telephone number in the corresponding name authority pointer record of the telephone number；
The call conversation control function entity receives the domain that the telephone number mapping server/domain name system returns
Name.
4. the method according to claim 1, wherein the call conversation control function entity is based on the calling
Request, the routing iinformation of network where inquiring the telephone number, comprising:
The call conversation control function entity inquires the telephone number institute from telephone number mapping server/domain name system
Operator mark and be currently located the mark in province；
The mark of mark and the province based on the operator, the routing of network where determining the corresponding telephone number
Information.
5. the method according to claim 1, wherein the call conversation control function entity is based on the calling
Request, the routing iinformation of network where inquiring the telephone number, comprising:
The call conversation control function entity sends route information query to telephone number mapping server/domain name system and asks
It asks；
The call conversation control function entity is received the telephone number mapping server/domain name system and is asked based on the inquiry
The query information character string of return is sought, the query information character string includes the telephone number and telephone number place
The routing iinformation of network.
6. a kind of call session control device characterized by comprising
Module is obtained, includes carrying other places roaming outside in the call request for obtaining the call request of VoLTE user's sending
The number of taking turn the telephone numbers of network users；
Enquiry module, for being based on the call request, the routing iinformation of network where inquiring the telephone number；
Routing module, for be based on the routing iinformation, route the call to the call conversation control function entity with it is described
Telephone number on interconnection network element between networks, taken with carrying the VoLTE user by the interconnection network element to described
Number turn the calling of network users.
7. device according to claim 6, which is characterized in that the enquiry module, comprising:
First inquiry submodule, for being based on the call request, the domain name of network where inquiring the telephone number；
First determines submodule, for determining the domain based on the corresponding relationship between pre-stored routing iinformation and domain name
The corresponding routing iinformation of name.
8. device according to claim 7, which is characterized in that the first inquiry submodule is specifically used for:
Inquiry request is initiated to telephone number mapping server/domain name system, includes that the number of taking turns net in the inquiry request
The telephone number of user, so that telephone number mapping server/domain name system is weighed from the corresponding title of the telephone number
The domain name of network where obtaining the telephone number in prestige pointer record；
Receive the domain name that the telephone number mapping server/domain name system returns.
9. device according to claim 8, which is characterized in that the enquiry module, comprising:
Second inquiry submodule, for fortune where inquiring the telephone number from telephone number mapping server/domain name system
It seeks the mark of quotient and is currently located the mark in province；
Second determines submodule, for the mark of mark and the province based on the operator, determines the corresponding electricity
The routing iinformation of network where talking about number.
10. device according to claim 8, which is characterized in that the enquiry module, comprising:
Sending submodule, for sending route information query request to telephone number mapping server/domain name system；
Receiving submodule is returned for receiving the telephone number mapping server/domain name system based on the inquiry request
Query information character string, the query information character string include the road of network where the telephone number and the telephone number
By information.
11. a kind of Call-Establish-Success rate equipment characterized by comprising
Processor；
Memory, for storing the executable instruction of the processor；
When the processor executes the executable instruction, side described in any one of the claims 1-5 can be executed
Method.
12. a kind of computer readable storage medium, including instruction, when described instruction is run on the computer, the meter
Calculation machine can execute method described in any one of the claims 1-5.
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