CN109450958B - Group user number portability communication method and system - Google Patents
Group user number portability communication method and system Download PDFInfo
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Abstract
The invention belongs to the technical field of number portability communication, and particularly relates to a communication method and a system for number portability of group users. The method comprises the following steps: the mobile switching center sends the connection message to the media gateway control function entity, the media gateway control function entity maps the connection message into a call invitation message and sends the call invitation message to the call session control function entity, the call session control function entity sends a query message to the telephone number mapping server so as to obtain an SIP-URI carrying a routing number, and the call session control function entity sends the call invitation message to a called call session control function entity based on the SIP-URI. The technical defects of poor communication effect and high cost when a group user in a number portability network serves as a called party, a VoLTE service is opened, the group user is registered in an IMS domain and the VoLTE group user registered in a CS domain serves as a calling party in the prior art are avoided, and the technical effect of saving the cost on the premise of ensuring normal communication of the user is realized.
Description
Technical Field
The invention belongs to the technical field of number portability communication, and particularly relates to a communication method and a system for number portability of group users.
Background
With the development of science and technology, terminals (such as mobile phones and the like) become essential articles in life of people. And along with the continuous improvement of the living quality of people, higher requirements are made on the consumption experience.
Mobile virtual private network services provide a logical private network to certain enterprises, groups, etc. Only one user is allowed to join a short number group network. In the prior art, network operators (Unicom, Mobile, Telecommunications) implement a number portability policy to enhance the consumer experience of people. However, this makes operators not only need to perform technical preparation, database construction, and network modification, add corresponding devices, expand and modify existing devices, but also need to solve the problems of charging, number inquiry, and some management, and these technical implementation all require huge investment and also require a certain amount of time. Although the original trust department requires mobile operators to implement the policy of 'take a number and transfer a package of food', operators in various regions have certain difficulty due to large difference of capability of a support system, and fusion of different charging and operation analysis systems, so that a schedule for comprehensively implementing the policy by many operators is greatly delayed. And because of the huge number of mobile phone users in China, the implementation of number portability will put higher requirements on the performance of the user information database.
Therefore, how to ensure the normal communication of the user becomes a technical problem to be solved urgently at present.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and a system for guaranteeing normal communication of a user, aiming at the above-mentioned deficiencies in the prior art.
According to an aspect of the embodiments of the present invention, an embodiment of the present invention provides a group user number portability communication method for solving the technical problem of the present invention, where a called user terminal is a called user in a group user who is ported from a first network number portability to a second network, the called user terminal opens a VoLTE service and is registered in an IMS domain, a calling user terminal corresponds to a calling user in the group user who has opened the VoLTE service, and the calling user terminal is in a CS domain, the method includes:
the mobile switching center sends the acquired connection message to a media gateway control function entity;
the media gateway control function entity maps the connection message into a call invitation message based on a preset mapping relation and sends the call invitation message to a call session control function entity;
the call session control function entity sends a query message to a telephone number mapping server based on the call invitation message so as to obtain an SIP-URI carrying a routing number;
and the call session control function entity sends the call invitation message to a called call session control function entity based on the SIP-URI.
Preferably, the method further comprises the steps of:
after the mobile switching center acquires the connection message, the mobile switching center sends the connection message to a multimedia telephone service application server corresponding to a called user terminal according to an acquired communication enterprise satisfaction index evaluation model corresponding to the called user terminal;
the multimedia telephone service application server returns the corresponding IMS routing number to the mobile switching center according to the connection message;
the mobile switching center anchors the connection message to an IMS domain based on the IMS routing number, so that the mobile switching center sends the acquired connection message to the media gateway control function entity.
Preferably, the method further comprises the steps of:
the calling user terminal sends a connection message to the mobile switching center;
the mobile switching center sends the connection message to a service control point corresponding to the calling user terminal according to an organization customer satisfaction index model corresponding to the calling user terminal;
the service control point judges whether the calling number corresponding to the calling user terminal and the called number corresponding to the called user terminal belong to the same group or not based on the connection message;
if so, the service control node acquires the corresponding called long number according to the called short number of the called number, and sends the connection message to the mobile switching center based on the called long number.
Preferably, the method further comprises the steps of:
the calling user terminal sends service request information to a base station;
and the base station sends a service request message to the mobile switching center so as to establish the connection between the calling user terminal and the mobile switching center.
Preferably, the method further comprises the steps of:
the called call session control function entity sends the call invitation message to a service control point application server of the called side according to the IFC message signed by the called user corresponding to the called user terminal;
and the service control point application server acquires the calling short number corresponding to the calling user terminal based on the call invitation message so as to display the calling short number on the called user terminal.
Preferably, when the call invitation message includes a FROM mapped by the calling number in the connection message and a PAI mapped by the additional calling number in the connection message, the method further includes the steps of:
if the caller identification information in the called call session control function entity is a display short number, the called call session control function entity modifies the FROM into the calling short number and modifies the PAI into a calling long number corresponding to the calling user terminal;
and if the caller identification information is the display trombone, the called call session control function entity modifies both the FROM and the PAI into the calling trombone corresponding to the calling user terminal.
According to another aspect of the embodiments of the present invention, an embodiment of the present invention further provides a group user number portability communication system, including: when a called user terminal corresponds to a called user in a group user who carries a number from a first network to a second network, the called user terminal opens a VoLTE service and registers in an IMS domain, the calling user terminal corresponds to a calling user in the group user who has opened the VoLTE service, and the calling user terminal is in a CS domain, then:
the mobile switching center is configured to: sending the acquired connection message to the media gateway control function entity;
the media gateway control function entity is configured to: mapping the connection message into a call invitation message based on a preset mapping relation, and sending the call invitation message to the call session control function entity;
the call session control function entity is configured to: and sending a query message to a telephone number mapping server based on the call invitation message so as to obtain an SIP-URI carrying a routing number, and sending the call invitation message to the called call session control function entity based on the SIP-URI.
Preferably, after the mobile switching center acquires the connection message, the mobile switching center is further configured to: according to the obtained evaluation model of the satisfaction index of the communication enterprise corresponding to the called user terminal, sending the connection message to a multimedia telephone service application server corresponding to the called user terminal;
the multimedia telephony service application server is configured to: returning the corresponding IMS routing number to the mobile switching center according to the connection message;
the mobile switching center is further configured to: and anchoring the connection message to an IMS domain based on the IMS routing number so that the mobile switching center can send the acquired connection message to the media gateway control function entity.
Preferably, the calling user terminal is configured to: sending a connection message to the mobile switching center;
the mobile switching center is further configured to: sending the connection message to a service control point corresponding to the calling user terminal according to an organization customer satisfaction index model corresponding to the calling user terminal;
the service control point is configured to: judging whether a calling number corresponding to the calling user terminal and a called number corresponding to the called user terminal belong to the same group or not based on the connection message;
when yes, the service control node is further configured to: and acquiring a corresponding called long number according to the called short number of the called number, and sending the connection message to the mobile switching center based on the called long number.
Preferably, the calling user terminal is further configured to: sending service request information to a base station;
the base station is configured to: and sending a service request message to the mobile switching center so as to establish the connection between the calling user terminal and the mobile switching center.
Preferably, the called call session control function entity is configured to: according to the IFC message signed by the called user corresponding to the called user terminal, sending the call invitation message to a service control point application server of the called side;
the service control point application server is configured to: and acquiring a calling short number corresponding to the calling user terminal based on the call invitation message so as to display the calling short number on the called user terminal.
Preferably, when the call invitation message includes FROM mapped by the calling number in the connection message and PAI mapped by the additional calling number in the connection message, then:
if the caller identification information in the called call session control function entity is a display short number, the called call session control function entity is further configured to: the FROM is modified into the calling short number, and the PAI is modified into the calling long number corresponding to the calling user terminal;
if the caller identification information is a display trombone, the called call session control function entity is further configured to: and modifying the FROM and the PAI into a calling long number corresponding to the calling user terminal.
The invention has the beneficial effects that:
the group user number portability communication method in the application sends the acquired connection message to a media gateway control function entity through a mobile switching center, the media gateway control function entity maps the connection message into a call invitation message based on a preset mapping relation and sends the call invitation message to a call session control function entity, the call session control function entity sends a query message to a telephone number mapping server based on the call invitation message so as to obtain an SIP-URI carrying a routing number, and the call session control function entity sends the call invitation message to a called call session control function entity based on the SIP-URI. The technical defects of poor communication effect and high cost when a group user in a number portability network serves as a called party, a VoLTE service is opened, the group user is registered in an IMS domain and the VoLTE group user registered in a CS domain serves as a calling party in the prior art are avoided, and the technical effect of saving the cost on the premise of ensuring normal communication of the user is realized.
Drawings
Fig. 1 is a flowchart of a communication method for number portability of group users according to an embodiment of the present invention;
fig. 2 is a flowchart of a communication method for number portability of group users according to another embodiment of the present invention;
fig. 3 is a flowchart of a communication method for number portability of group users according to another embodiment of the present invention;
fig. 4 is a flowchart of a communication method for number portability of group users according to another embodiment of the present invention;
fig. 5 is a block diagram of a communication system for number portability of group users according to an embodiment of the present invention;
the attached drawings are as follows:
1-a mobile switching center; 2-media gateway control function entity; 3-a call session control function entity; 4-telephone number mapping server; 5-called call session control function entity.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes in detail a communication method and system for number portability of group users according to the present invention with reference to the accompanying drawings and the detailed description.
The embodiment provides a group user number portability communication method, which avoids the technical disadvantages of poor communication effect and high cost in the prior art, and achieves the technical effect of saving cost on the premise of ensuring normal communication of users.
As shown in fig. 1, when a called subscriber terminal selects a called subscriber from group subscribers who are transferred from a first network to a second network, the called subscriber terminal opens a VoLTE service and registers in an IMS domain, the calling subscriber terminal corresponds to a calling subscriber from the group subscribers who have opened the VoLTE service, and the calling subscriber terminal is in a CS domain, the method includes the steps of:
step S100): and the mobile switching center sends the acquired connection message to a media gateway control function entity.
In this step, the mobile switching center MSCa sends a connect message to the media gateway control function entity MGCF.
Wherein, number portability: the number portability and the number-changing-free mobile phone are the same as those of a mobile telecommunication operator, for example, a mobile phone user with a mobile number is switched to a Chinese telecommunication network or a Chinese communication network to enjoy telecommunication operation services provided by the Chinese telecommunication or the Chinese communication. The number portability network mainly comprises two types of fixed number portability and mobile number portability. Number portability helps to support new operators, forcing them to quickly enter the market. The implementation of number portability is considered a measure of the benefit to all but the consumer, national and telecommunications industries. The number portability is beneficial to consumers and optimizing the market structure, and effective competition is realized and the welfare of the consumers is improved through the control measures of the market. For the consumer, number portability can reduce the user's network forwarding cost. For the country, number portability can save number resources. The number portability can break the dominance of the existing telecom operators, thereby promoting market competition and optimizing market structure. After the number portability is implemented, the number resources are generally managed by a third party in a centralized way, and social resources are also saved.
Step S200): and the media gateway control function entity maps the connection message into a call invitation message based on a preset mapping relation and sends the call invitation message to the call session control function entity.
Specifically, the media gateway control function entity maps the calling number CallingPartyNumber in the connection message to the FROM in the call invitation message, and maps the additional main number to the PAI in the call invitation message.
Step S300): the call session control function entity sends a query message to the telephone number mapping server based on the call invite message in order to get the SIP-URI carrying the routing number.
In the step, the call session control function entity sends a query message to the telephone number mapping server to query the name authority pointer record of the called number. And the telephone number mapping server sends the SIP-URI carrying the routing number to a call session control function entity. Wherein the SIP-URI is a SIP address scheme for calling another person through SIP.
The call session control function entity refers to a call session control function entity of a calling side.
The main functions of the telephone number mapping server/domain name system are as follows: the carrying-out information of the user in the local network can be obtained through the charging system; obtaining and updating the portable subscriber information among other operators, such as: china mobile users carry numbers to switch to China telecom, and need to save international user identification codes and routing codes of mobile stations; if the forwarding carrying information corresponding to the user is not stored, the routing code is the routing code corresponding to the network owned by the user number.
Step S400): the call session control function entity sends the call invite message to the called call session control function entity based on the SIP-URI.
In this step, after the call session control function entity obtains the SIP-URI, the call invite message is sent to the called call session control function entity according to the SIP-URI. Therefore, the call connection between the calling user and the called user is established.
With reference to fig. 1 and fig. 2, in a possible implementation solution, before step S100), the method further includes the steps of:
step S10): after the mobile switching center obtains the connection message, the mobile switching center sends the connection message to a multimedia telephone service application server corresponding to the called user terminal according to the obtained communication enterprise satisfaction index evaluation model corresponding to the called user terminal.
In the step, the mobile switching center obtains a communication enterprise satisfaction index evaluation model T-CSI corresponding to the called user terminal, and triggers the connection message to a multimedia telephone service application server MMTEL AS corresponding to the called user terminal based on the T-CSI.
Step S20): the multimedia telephone service application server returns the corresponding IMS routing number to the mobile switching center according to the connection message.
In this step, after receiving the connection message, the multimedia telephony service application server MMTEL AS acquires an IMS routing number IMRN corresponding to the connection message, and feeds back the IMS routing number IMRN to the mobile switching center. The IMRN format is that a fixed prefix is added before a called number.
Step S30): the mobile switching center anchors the connection message to the IMS domain based on the IMS routing number, so that the mobile switching center sends the acquired connection message to the media gateway control function entity.
With reference to fig. 1 and fig. 3, in a possible implementation solution, before step S100), the method further includes the steps of:
step S1): the calling subscriber terminal sends a connect message to the mobile switching center.
Step S2): and the mobile switching center sends the connection message to a service control point corresponding to the calling user terminal according to the organization customer satisfaction index model corresponding to the calling user terminal.
In the step, the mobile switching center triggers the connection message to a service control point SCPa corresponding to the calling user terminal according to an organization customer satisfaction index model O-CSI.
Step S3): and the service control point judges whether the calling number corresponding to the calling user terminal and the called number corresponding to the called user terminal belong to the same group or not based on the connection message.
In this step, the service control point judges whether the calling number and the called number belong to the same group. And if it is determined that the calling number and the called number are the same group, step S4) is performed.
Step S4): the service control node acquires the corresponding called long number according to the called short number of the called number and sends a connection message to the mobile switching center based on the called long number.
In a possible technical scheme, a mobile switching center sends an IDP (intrusion detection system) to a service network control point, and the service control point judges a connection message based on the IDP to determine whether a calling number and a called number belong to the same group and correspondingly marks the calling number and the called number in a triggered call ticket.
The service network control point sends a request report bcsm event message RRBE message to the mobile switching center to request the report of the related event.
The service control point sends AC message to the mobile switching center and FCI message to the mobile switching center, and adds related content in the call ticket through SSP.
With reference to fig. 1 and fig. 3, in a possible implementation solution, before step S1), the method further includes the steps of:
step S01): the calling user terminal sends service request information to the base station.
Step S02): the base station sends a service request message to the mobile switching center in order to establish a connection of the calling subscriber terminal with the mobile switching center.
Specifically, the method comprises the following steps: when the calling user dials the short number of the called user through the calling user terminal, the calling user terminal initiates service request information to the base station so as to establish the connection among the user terminal, the base station and the mobile switching center.
With reference to fig. 1 and fig. 4, in a possible implementation solution, after step S400), the method further includes the steps of:
step S500): and the called call session control function entity sends the call invitation message to a service control point application server of the called side according to the IFC message signed by the called user corresponding to the called user terminal.
Step S600): and the service control point application server acquires the calling short number corresponding to the calling user terminal based on the call invitation message so as to display the calling short number on the called user terminal.
In a possible technical scheme, after receiving a call invitation message, a service control point application server obtains a calling number through PAI, and optionally judges that a calling user dials a short number through FROM, and the called user displays the short number. The service control point application server sends UDR to HSS to inquire the position information of the called user:
SCP AS firstly carries out domain selection on users:
UDR AVP key parameters sent by as to HSS are as follows:
the key parameters of UDA AVP returned by HSS are as follows:
and b, inquiring user position information by the SCP AS according to the domain selection result:
the UDR AVP key parameters sent by the AS to the HSS are AS follows:
the key parameters of UDA AVP returned by HSS are as follows:
in a possible implementation solution, after step S400), when the call invitation message includes FROM and PAI, where FROM is mapped by the calling number in the connection message, and PAI is mapped by the additional calling number in the connection message, the method further includes the steps of:
step S700): if the caller identification information in the called call session control function entity is display short number, the called call session control function entity modifies FROM to be calling short number and PAI to be calling long number corresponding to the calling user terminal.
Step S800): if the caller identification information is the display trombone, the called call session control function entity modifies both FROM and PAI to the calling trombone corresponding to the calling user terminal.
In a possible implementation solution, after step S700) and step S800), that is, after modifying the FROM and the PAI in the call invitation message, obtaining a modified invitation message, the method further includes the steps of:
step S900): the called call session control function entity triggers the invitation message to the MMTel AS of the called side, the MMTel AS of the called side provides basic service and routing domain selection, and finally the invitation message is routed to the called user terminal. After the called user terminal receives the invitation message, the calling short number is displayed preferentially according to the FROM.
After the session is established through the subsequent message interaction of 180ringing, PRACK \200OK, 200OK and the like. The call session control function entity sends a called response message 200OK to the calling user terminal, and the calling user sends a BYE message through the calling user terminal. And after receiving the BYE message, the service control point application server writes a ticket and releases the session.
Correspondingly, as shown in fig. 5, this embodiment further provides a group user number portability communication system, including: when a called user terminal is a called user in a group user who carries a number from a first network to a second network, the called user terminal opens a VoLTE service and registers to an IMS domain, and a calling user terminal corresponds to a calling user in the group user who has opened the VoLTE service, and the calling user terminal is in a CS domain, then:
the mobile switching center 1 is used for: and sending the acquired connection message to the media gateway control function entity 2.
The media gateway control function entity 2 is configured to: and mapping the connection message into a call invitation message based on a preset mapping relation, and sending the call invitation message to the call session control function entity 3.
The call session control function entity 3 is configured to: sending a query message to the telephone number mapping server 4 based on the call invite message to obtain the SIP-URI carrying the routing number, and sending the call invite message to the called call session control function entity 5 based on the SIP-URI.
In a possible implementation of the technical solution, after the mobile switching center acquires the connection message, the mobile switching center is further configured to: and sending the connection message to a multimedia telephone service application server corresponding to the called user terminal according to the obtained communication enterprise satisfaction index evaluation model corresponding to the called user terminal.
The multimedia telephony service application server is for: and returning the corresponding IMS routing number to the mobile switching center according to the connection message.
The mobile switching center is further configured to: and anchoring the connection message to the IMS domain based on the IMS routing number so that the mobile switching center sends the acquired connection message to the media gateway control function entity.
In one possible implementation, the calling user terminal is configured to: sending a connection message to a mobile switching center;
the mobile switching center is further configured to: and sending the connection message to a service control point corresponding to the calling user terminal according to the organization customer satisfaction index model corresponding to the calling user terminal.
The service control point is configured to: and judging whether the calling number corresponding to the calling user terminal and the called number corresponding to the called user terminal belong to the same group or not based on the connection message.
When yes, the service control node is further configured to: and acquiring a corresponding called long number according to the called short number of the called number, and sending a connection message to the mobile switching center based on the called long number.
In a possible implementation, the calling user terminal is further configured to: and sending the service request information to the base station.
The base station is used for: and sending a service request message to the mobile switching center so as to establish the connection between the calling user terminal and the mobile switching center.
In one possible implementation, the called call session control function entity is configured to: and sending the call invitation message to a service control point application server of the called side according to the IFC message signed by the called user corresponding to the called user terminal.
The service control point application server is configured to: and acquiring a calling short number corresponding to the calling user terminal based on the call invitation message so as to display the calling short number on the called user terminal.
In one possible implementation solution, when the call invitation message includes FROM and PAI, and FROM is mapped by the calling number in the connection message, and PAI is mapped by the additional calling number in the connection message, then:
if the caller identification information in the called call session control function entity is the display short number, the called call session control function entity is further configured to: and modifying FROM into a calling short number, and modifying PAI into a calling long number corresponding to the calling user terminal.
If the caller identification information is display trombone, the called call session control function entity is also used for: and modifying the FROM and the PAI into a calling number corresponding to the calling user terminal.
The group user number portability communication method in the application sends the acquired connection message to a media gateway control function entity through a mobile switching center, the media gateway control function entity maps the connection message into a call invitation message based on a preset mapping relation and sends the call invitation message to a call session control function entity, the call session control function entity sends a query message to a telephone number mapping server based on the call invitation message so as to obtain an SIP-URI carrying a routing number, and the call session control function entity sends the call invitation message to a called call session control function entity based on the SIP-URI. The technical defects of poor communication effect and high cost when a group user in a number portability network serves as a called party, a VoLTE service is opened, the group user is registered in an IMS domain and the VoLTE group user registered in a CS domain serves as a calling party in the prior art are avoided, and the technical effect of saving the cost on the premise of ensuring normal communication of the user is realized.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (12)
1. A group user number portability communication method is characterized in that when a called user terminal corresponds to a called user in a group user who is ported from a first network number portability to a second network, the called user terminal opens a VoLTE service and is registered in an IMS domain, a calling user terminal corresponds to a calling user in the group user who has opened the VoLTE service, and the calling user terminal is in a CS domain, the method comprises the following steps:
the mobile switching center sends the acquired connection message to a media gateway control function entity;
the media gateway control function entity maps the connection message into a call invitation message based on a preset mapping relation and sends the call invitation message to a call session control function entity;
the call session control function entity sends a query message to a telephone number mapping server based on the call invitation message so as to obtain an SIP-URI carrying a routing number, and the telephone number mapping server has the functions of obtaining the carrying-out information of a home network user through a charging system and obtaining and updating the carrying-over user information among other operators;
and the call session control function entity sends the call invitation message to a called call session control function entity based on the SIP-URI.
2. The group subscriber number portability communication method of claim 1, further comprising the steps of:
after the mobile switching center acquires the connection message, the mobile switching center sends the connection message to a multimedia telephone service application server corresponding to a called user terminal according to an acquired communication enterprise satisfaction index evaluation model corresponding to the called user terminal;
the multimedia telephone service application server returns the corresponding IMS routing number to the mobile switching center according to the connection message;
the mobile switching center anchors the connection message to an IMS domain based on the IMS routing number, so that the mobile switching center sends the acquired connection message to the media gateway control function entity.
3. The group subscriber number portability communication method of claim 1, further comprising the steps of:
the calling user terminal sends a connection message to the mobile switching center;
the mobile switching center sends the connection message to a service control point corresponding to the calling user terminal according to an organization customer satisfaction index model corresponding to the calling user terminal;
the service control point judges whether the calling number corresponding to the calling user terminal and the called number corresponding to the called user terminal belong to the same group or not based on the connection message;
if so, the service control point acquires the corresponding called long number according to the called short number of the called number, and sends the connection message to the mobile switching center based on the called long number.
4. The group subscriber number portability communication method of claim 3, further comprising the steps of:
the calling user terminal sends service request information to a base station;
and the base station sends a service request message to the mobile switching center so as to establish the connection between the calling user terminal and the mobile switching center.
5. The communication method for the number portability of group users according to any of claims 1-4, further comprising the steps of:
the called call session control function entity sends the call invitation message to a service control point application server of the called side according to the IFC message signed by the called user corresponding to the called user terminal;
and the service control point application server acquires the calling short number corresponding to the calling user terminal based on the call invitation message so as to display the calling short number on the called user terminal.
6. The communication method of group subscriber number portability according to any of claims 1-4, wherein when the call invitation message comprises FROM and PAI, and the FROM is mapped by the calling number in the connection message, and the PAI is mapped by the additional calling number in the connection message, further comprising the steps of:
if the caller identification information in the called call session control function entity is display short number, the called call session control function entity modifies the FROM into a calling short number and modifies the PAI into a calling long number corresponding to the calling user terminal;
and if the caller identification information is the display trombone, the called call session control function entity modifies both the FROM and the PAI into the calling trombone corresponding to the calling user terminal.
7. A group subscriber number portability communication system, comprising: when a called user terminal corresponds to a called user in a group user who carries a number from a first network to a second network, the called user terminal opens a VoLTE service and registers in an IMS domain, the calling user terminal corresponds to a calling user in the group user who has opened the VoLTE service, and the calling user terminal is in a CS domain, then:
the mobile switching center is configured to: sending the acquired connection message to the media gateway control function entity;
the media gateway control function entity is configured to: mapping the connection message into a call invitation message based on a preset mapping relation, and sending the call invitation message to the call session control function entity;
the call session control function entity is configured to: and sending a query message to a telephone number mapping server based on the call invitation message so as to obtain an SIP-URI carrying a routing number, and sending the call invitation message to the called call session control function entity based on the SIP-URI, wherein the telephone number mapping server has the functions of obtaining the carry-out information of the user of the local network through a charging system and obtaining and updating the carry-over user information among other operators.
8. The system of claim 7,
after the mobile switching center acquires the connection message, the mobile switching center is further configured to: according to the obtained evaluation model of the satisfaction index of the communication enterprise corresponding to the called user terminal, sending the connection message to a multimedia telephone service application server corresponding to the called user terminal;
the multimedia telephony service application server is configured to: returning the corresponding IMS routing number to the mobile switching center according to the connection message;
the mobile switching center is further configured to: and anchoring the connection message to an IMS domain based on the IMS routing number so that the mobile switching center can send the acquired connection message to the media gateway control function entity.
9. The system of claim 7,
the calling user terminal is configured to: sending a connection message to the mobile switching center;
the mobile switching center is further configured to: sending the connection message to a service control point corresponding to the calling user terminal according to an organization customer satisfaction index model corresponding to the calling user terminal;
the service control point is configured to: judging whether a calling number corresponding to the calling user terminal and a called number corresponding to the called user terminal belong to the same group or not based on the connection message;
when yes, the service control point is further configured to: and acquiring a corresponding called long number according to the called short number of the called number, and sending the connection message to the mobile switching center based on the called long number.
10. The system of claim 9,
the calling user terminal is further configured to: sending service request information to a base station;
the base station is configured to: and sending a service request message to the mobile switching center so as to establish the connection between the calling user terminal and the mobile switching center.
11. The system according to any one of claims 7-10,
the called call session control function entity is used for: according to the IFC message signed by the called user corresponding to the called user terminal, sending the call invitation message to a service control point application server of the called side;
the service control point application server is configured to: and acquiring a calling short number corresponding to the calling user terminal based on the call invitation message so as to display the calling short number on the called user terminal.
12. The system according to any one of claims 7-10,
when the call invitation message includes FROM and PAI, and FROM is mapped by the calling number in the connection message, and PAI is mapped by the additional calling number in the connection message, then:
if the caller identification information in the called call session control function entity is a display short number, the called call session control function entity is further configured to: the FROM is modified into a calling short number, and the PAI is modified into a calling long number corresponding to the calling user terminal;
if the caller identification information is a display trombone, the called call session control function entity is further configured to: and modifying the FROM and the PAI into a calling long number corresponding to the calling user terminal.
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