CN105591761B - Realize the method, apparatus and system of the cross-domain charge accountings of IMS - Google Patents

Realize the method, apparatus and system of the cross-domain charge accountings of IMS Download PDF

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CN105591761B
CN105591761B CN201410557871.3A CN201410557871A CN105591761B CN 105591761 B CN105591761 B CN 105591761B CN 201410557871 A CN201410557871 A CN 201410557871A CN 105591761 B CN105591761 B CN 105591761B
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domain
equipment
cscf
caller
called
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CN105591761A (en
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戎琪
黄挺
时新建
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Abstract

The invention discloses a kind of method, apparatus and system for realizing the cross-domain charge accountings of IMS, are related to the fields IMS.The embodiment of the present invention is in caller domain Call-Establish-Success rate equipment, such as caller domain S/I CSCF equipment, increase and differentiates service logic, the Query Information of the called number returned according to telephone number mapped system or domain name system differentiate the business whether inter-domain call, and required charge accounting information will be called between IMS domain issue CCF and record, to realize charging and clearing between IMS domain in the case where not changing network structure, not increasing network element device.

Description

Realize the method, apparatus and system of the cross-domain charge accountings of IMS
Technical field
The present invention relates to IMS (IP Multimedia Subsystem, IP multimedia subsystem) fields, more particularly to one Kind realizes the method, apparatus and system of the cross-domain charge accountings of IMS.
Background technology
With the development of multimedia service, IMS is by the core position in network, in multiple IMS domains of different operators Between, the business intercommunication situation between multiple IMS domains of same operator, between IMS and CS (circuit switching) domain it is also more general Time, between these networks involved mutual charging and settling problems also more highlight.
In the case of having existing network, the IMS charging points for generating charging Original CDR are arranged in P-CSCF (Proxy Call Session Control Function, Proxy Call Session Control Function), MMTEL (Multi Media Telephony, it is more Media phone business) or E-CSCF (Emergency Call Session Control Function, emergency call session control Function processed), these charging points are simultaneously not disposed between IMS domain, are not finely divided to outgoing traffic, and cross-domain words cannot be distinguished It is single, therefore be difficult to isolate the ticket settled accounts between domain in the charging bill of charging point generation.
Using the BCF in IMS architecture, (Breakout Gateway Control Function interrupt egress gateways control Function) network element, cross-domain clearing ticket can be generated, but BCF network elements are not set in IMS networks, then it cannot achieve Cross-domain clearing ticket.
Therefore, it is necessary between proposing that one kind carrying out IMS domain in the case where not changing network structure, not increasing network element device The scheme of charging and clearing.
Invention content
A technical problem to be solved of the embodiment of the present invention is:Do not change network structure, increase network element device In the case of how to carry out charging and clearing between IMS domain.
One side according to the ... of the embodiment of the present invention, a kind of method that realizing cross-domain charge accounting provided, including:Caller Domain Call-Establish-Success rate equipment receives call request message, and the IMS chargings of this calling are obtained from the call request message Identify (IMS Charging Identify, ICID) and called number;Using called number to telephone number mapped system (E.164 Number, ENUM) or domain name system (DNS) initiate inquiry;If telephone number mapped system or domain name system return Query result be called domain I-CSCF (Interrogating Call Session Control Function, query call Conversation control function) domain name, it is determined that this calling is inter-domain call, according to called domain I-CSCF domain names by the call request Message is sent to called domain I-CSCF equipment;Call state is tracked, the expression both sides returned in response to being called domain I-CSCF equipment Caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to CCF (Charging by the message of call Collection Function, Charging Collection Function) equipment, so that CCF equipment is according to caller domain domain name, called domain I-CSCF Domain name carries out charge accounting between domain.
In the one embodiment for initiating calling for IMS network, the caller domain Call-Establish-Success rate equipment receives calling Request message includes:Caller domain S-CSCF (Serving Call Session Control Function, service call session Control function) equipment receive come from P-CSCF (Proxy Call Session Control Function) equipment or AGCF (Access Gateway Control Function, access gateway control function) equipment call request message;It is described by caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to Charging Collection Function CCF equipment:Caller domain S-CSCF equipment is by caller domain S-CSCF domain names, called domain I-CSCF domain names, IMS charging identifier are sent to CCF equipment.
In the one embodiment for initiating calling for non-IMS network, the caller domain Call-Establish-Success rate equipment reception is exhaled The request message is made to include:Caller domain I-CSCF equipment receive from MGCF (Media Gateway Control Function, Multimedia gateway control function) equipment call request message;It is described by caller domain domain name, called domain I-CSCF domain names, IMS Charging identifier is sent to Charging Collection Function CCF equipment:Caller domain I-CSCF equipment is by caller domain I-CSCF domain names, called Domain I-CSCF domain names, IMS charging identifier are sent to CCF equipment.
It in one embodiment, specifically can be by ACR (accounting request) message by caller domain domain name, called domain I-CSCF Domain name, IMS charging identifier are sent to CCF equipment.
In one embodiment, the CCF equipment according to caller domain domain name, called domain I-CSCF domain names count between domain Expense is settled accounts:CCF equipment is retrieved to obtain by caller domain domain name and called domain I-CSCF domain names is related to corresponding caller domain With the cross-domain ticket in called domain, and charge accounting between domain is carried out according to the cross-domain ticket that retrieves.
Another aspect according to the ... of the embodiment of the present invention, a kind of equipment that realizing the cross-domain charge accountings of IMS provided, packet It includes:Message reception module obtains the IMS meters of this calling for receiving call request message from the call request message Take mark and called number;Enquiry module, for being looked into telephone number mapped system or domain name system initiation using called number It askes;Calling module, if being called domain query call for the query result that telephone number mapped system or domain name system return Conversation control function I-CSCF domain names, it is determined that this calling is inter-domain call, is exhaled described according to called domain I-CSCF domain names Request message is made to be sent to called domain I-CSCF equipment;Settlement information processing module, for tracking call state, in response to quilt It is the message for indicating double-talk that domain I-CSCF equipment returns, by caller domain domain name, called domain I-CSCF domain names, IMS chargings Mark is sent to Charging Collection Function CCF equipment, so that CCF equipment is carried out according to caller domain domain name, called domain I-CSCF domain names Charge accounting between domain.
In one embodiment, when the equipment of the cross-domain charge accountings of the IMS is caller domain service call session control work( When energy S-CSCF equipment, the message reception module is set specifically for receiving from Proxy Call Session Control Function P-CSCF Standby or access gateway control function AGCF equipment call request message;Wherein, caller domain domain name is caller domain S- CSCF domain names.
In one embodiment, described when the equipment of the cross-domain charge accountings of the IMS is caller domain I-CSCF equipment Message reception module is specifically used for receiving the call request message from multimedia gateway control function MGCF equipment;Wherein, institute It is caller domain I-CSCF domain names to state caller domain domain name.
In one embodiment, the settlement information processing module is specifically used for passing through accounting request ACR message by caller Domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to CCF equipment.
Other side according to the ... of the embodiment of the present invention, a kind of system that realizing the cross-domain charge accountings of IMS provided, packet It includes:The equipment and Charging Collection Function CCF equipment of the cross-domain charge accountings of IMS above-mentioned;CCF equipment is for receiving and recording IMS The caller domain domain name of the equipment transmission of cross-domain charge accounting, called domain I-CSCF domain names, IMS charging identifier, and according to caller domain Domain name, called domain I-CSCF domain names carry out charge accounting between domain.
The embodiment of the present invention increases such as caller domain S/I-CSCF equipment in caller domain Call-Establish-Success rate equipment and differentiates industry Be engaged in logic, the Query Information of the called number returned according to telephone number mapped system or domain name system differentiate the business whether domain Between call, and required charge accounting information will be called between IMS domain issue CCF and record, to do not change network structure, Charging and clearing between IMS domain are realized in the case of not increasing network element device.
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
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art With obtain other attached drawings according to these attached drawings.
Fig. 1 describes IMS system network architecture figures.
Fig. 2 is the flow diagram of method one embodiment that the present invention realizes cross-domain charge accounting.
Fig. 3 is that the present invention initiates to realize the flow diagram of cross-domain charge accounting when calling in IMS network.
Fig. 4 is that the present invention initiates to realize the flow diagram of cross-domain charge accounting when calling in non-IMS network.
Fig. 5 is the structural schematic diagram of system one embodiment that the present invention realizes the cross-domain charge accountings of IMS.
Fig. 6 is the structural schematic diagram of equipment one embodiment that the present invention realizes the cross-domain charge accountings of IMS.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Fig. 1 describes IMS system network architecture figures.Wherein, the calling that S-CSCF initiates this IMS domain is handled, It is inquired to ENUM/DNS according to called number, if ENUM/DNS inquiries are returned as this IMS domain number, controls calling It initiates to call to this domain user;If ENUM/DNS inquiries return to other domains I-CSCF domain names, turn called domain I-CSCF controls Subsequent voice calls;If ENUM/DNS turns this IMS domain I-CSCF control subsequent voice calls without query result.Wherein, no inquiry knot A kind of situation of fruit is for example:It is called as CDMA user, because C network users can roam, IMS network wishes calling being directly transferred to C Net is subsequently addressed, then ENUM/DNS can be without query result.In addition, further including record charging settlement information in IMS systems CCF, and provide location-based service SLF (Subscribe Location Function, user location function) or HSS (Home Subscriber Server, home subscriber server), SLF and HSS correlation functions can refer to the prior art.
Fig. 2 is the flow diagram of method one embodiment that the present invention realizes cross-domain charge accounting.The side of the present embodiment Method can be executed by caller domain Call-Establish-Success rate equipment, if it is IMS network-originated calls, then caller domain call session Control device for example can be caller domain S-CSCF equipment, if being that non-IMS network initiates calling, caller domain call session Control device for example can be caller domain I-CSCF equipment.As shown in Fig. 2, the method for the present embodiment includes the following steps:
Step S202 receives call request message, and the IMS charging identifier of this calling is obtained from call request message ICID and called number.
It initiates to call if it is IMS network, caller domain S-CSCF equipment is received from P-CSCF equipment or AGCF equipment Call request message.
If being that non-IMS network initiates calling, caller domain I-CSCF equipment receives the call request from MGCF equipment and disappears Breath.
Step S204 initiates inquiry, query result example using called number to telephone number mapped system or domain name system It such as may be caller domain domain name, be called domain I-CSCF domain names or without query result.
Step S206, if the query result that telephone number mapped system or domain name system return is the called domain domains I-CSCF Name, it may be determined that this calling is inter-domain call, then is sent to call request message according to called domain I-CSCF domain names called Domain I-CSCF equipment.If the query result returned is other situations, this operation flow terminates.
Step S208, tracks call state, and the typical call state of call is, for example, that (183 disappear during calling carries out Breath), ring (180 message), double-talk (200ok message), it is logical in response to being called the expression both sides that domain I-CSCF equipment returns Caller domain domain name, called domain I-CSCF domain names, IMS charging identifier ICID are sent to CCF equipment, so that CCF is set by the message of words For according to charge accounting between caller domain domain name, called domain I-CSCF domain names progress domain.
A kind of mode can be by ACR (accounting request) message by caller domain domain name, called domain I-CSCF domain names, ICID etc. Charge accounting information is sent to CCF equipment, for example, can ACR message be inserted for caller domain domain name, called domain I-CSCF domain names Parameter List-of-Operator-Identifier, and ICID is inserted into ACR message, ACR message is then sent to CCF Equipment.
Wherein, when the equipment of the cross-domain charge accountings of IMS is caller domain S-CSCF equipment, caller domain domain name is caller domain S- CSCF domain names.When the equipment of the cross-domain charge accountings of IMS is caller domain I-CSCF equipment, caller domain domain name is caller domain I-CSCF Domain name.
The embodiment of the present invention increases such as caller domain S/I-CSCF equipment in caller domain Call-Establish-Success rate equipment and differentiates industry Be engaged in logic, the Query Information of the called number returned according to telephone number mapped system or domain name system differentiate the business whether domain Between call, and required charge accounting information will be called between IMS domain issue CCF and record, to do not change network structure, Charging and clearing between IMS domain are realized in the case of not increasing network element device.
Fig. 3 is that the present invention initiates to realize the flow diagram of cross-domain charge accounting when calling in IMS network.As shown in figure 3, The method of the present embodiment includes the following steps:
Step S302, IMS network initiate a call to caller domain S-CSCF equipment, and specifically, P-CSCF equipment or AGCF are set It is standby to send call request message (Invite) to caller domain S-CSCF equipment, carry ICID and called number in call request message Code.
Step S304, caller domain S-CSCF equipment receive the call request message from P-CSCF equipment or AGCF equipment, The ICID and called number that this calling is obtained from call request message, using called number to telephone number mapped system or Domain name system initiates inquiry.
Step S306, telephone number mapped system or domain name system are inquired according to called number, and query result is for example It may be caller domain S-CSCF domain names, be called domain I-CSCF domain names or without query result.
Step S308, if the query result returned is called domain I-CSCF domain names, it may be determined that this calling is between domain Calling, then call request message is sent to called domain I-CSCF by S-CSCF equipment in caller domain according to called domain I-CSCF domain names Equipment carries ICID in call request message.
Step S310 is called domain I-CSCF equipment and returns to 183 message.
Step S312 is called domain I-CSCF equipment and returns to 180 message.
Step S314 is called domain I-CSCF equipment and returns to 200ok message.
Step S316, after caller domain S-CSCF equipment receives 200ok message, it is known that both sides start to converse, then start to give birth to At charging, by caller domain S-CSCF domain names (abbreviation caller domain name), called domain I-CSCF domain names (being referred to as called domain name) filling ACR The parameter List-of-Operator-Identifier of message, and ICID is inserted into ACR message, then ACR message is sent To CCF equipment.
Step S318, CCF equipment records the charge accountings such as ICID, caller domain S-CSCF domain names, called domain I-CSCF domain names Information, and return to ACA (charging response) message.
The embodiment of the present invention increases in caller domain S-CSCF equipment differentiates service logic, according to telephone number mapped system or Domain name system return called number Query Information differentiate the business whether inter-domain call, and will between IMS domain call needed for Charge accounting information is issued CCF and is recorded, to be realized in the case where not changing network structure, not increasing network element device Charging and clearing between the domains IMS.
Fig. 4 is that the present invention initiates to realize the flow diagram of cross-domain charge accounting when calling in non-IMS network.Such as Fig. 4 institutes Show, the method for the present embodiment includes the following steps:
Step S402, non-IMS network initiate a call to caller domain I-CSCF equipment, and specifically, MGCF equipment is to caller domain I-CSCF equipment sends call request message (Invite), and ICID and called number are carried in call request message.
Step S404, caller domain I-CSCF equipment receive the call request message from MGCF equipment, disappear from call request The ICID and called number that this calling is obtained in breath are initiated using called number to telephone number mapped system or domain name system Inquiry.
Step S406, telephone number mapped system or domain name system are inquired according to called number, and query result is for example It may be caller domain I-CSCF domain names, be called domain I-CSCF domain names or without query result.
Step S408, if the query result returned is called domain I-CSCF domain names, it may be determined that this calling is between domain Calling, then call request message is sent to called domain I-CSCF by I-CSCF equipment in caller domain according to called domain I-CSCF domain names Equipment carries ICID in call request message.
Step S410 is called domain I-CSCF equipment and returns to 183 message.
Step S412 is called domain I-CSCF equipment and returns to 180 message.
Step S414 is called domain I-CSCF equipment and returns to 200ok message.
Step S416, after caller domain I-CSCF equipment receives 200ok message, it is known that both sides start to converse, then start to give birth to At charging, caller domain I-CSCF domain names, called domain I-CSCF domain names are inserted to the parameter List-of-Operator- of ACR message Identifier, and ICID is inserted into ACR message, ACR message is then sent to CCF equipment.
Step S418, CCF equipment records the charge accountings such as ICID, caller domain I-CSCF domain names, called domain I-CSCF domain names Information, and return to ACA (charging response) message.
The embodiment of the present invention increases in caller domain I-CSCF equipment differentiates service logic, according to telephone number mapped system or Domain name system return called number Query Information differentiate the business whether inter-domain call, and will between IMS domain call needed for Charge accounting information is issued CCF and is recorded, to be realized in the case where not changing network structure, not increasing network element device Charging and clearing between the domains IMS.
The embodiment of the present invention also proposes that a kind of CCF equipment is carried out according to caller domain domain name, called domain I-CSCF domain names between domain The method of charge accounting, including:Input caller domain domain name and called domain domain name, CCF equipment pass through caller domain domain name and called domain I-CSCF domain names are retrieved to obtain the cross-domain ticket for being related to corresponding caller domain and called domain, and according to the cross-domain words retrieved Single charge accounting between carrying out domain.
The embodiment of the present invention also proposes a kind of system for realizing the cross-domain charge accountings of IMS, and with reference to figure 5, the present embodiment is System includes:Realize the equipment 502 and CCF equipment 504 of the cross-domain charge accountings of IMS.
It realizes the equipment 502 of the cross-domain charge accountings of IMS, such as can be caller domain S-CSCF equipment or caller domain I- CSCF equipment, be mainly used for receive call request message, obtained from call request message this calling IMS charging identifier and Called number;Using called number inquiry is initiated to telephone number mapped system or domain name system;If the query result returned It is called domain I-CSCF domain names, it is determined that this calling is inter-domain call, and call request is disappeared according to called domain I-CSCF domain names Breath is sent to called domain I-CSCF equipment;Call state is tracked, it is logical in response to being called the expression both sides that domain I-CSCF equipment returns Caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to CCF equipment, so as to CCF equipment by the message of words According to charge accounting between caller domain domain name, called domain I-CSCF domain names progress domain.
CCF equipment 504 is used to receive and record the caller domain domain name of the equipment transmission of the cross-domain charge accountings of IMS, called domain I-CSCF domain names, IMS charging identifier, and according to charge accounting between caller domain domain name, called domain I-CSCF domain names progress domain.
With reference to figure 6, realize one embodiment of the equipment 502 of the cross-domain charge accountings of IMS for example including:
Message reception module 602 obtains this calling for receiving call request message from call request message IMS charging identifier and called number;
Enquiry module 604, for initiating inquiry to telephone number mapped system or domain name system using called number;
Calling module 606, if being called domain for the query result that telephone number mapped system or domain name system return Query call conversation control function I-CSCF domain names, it is determined that this calling is inter-domain call, according to called domain I-CSCF domain names Call request message is sent to called domain I-CSCF equipment;
Settlement information processing module 608, for tracking call state, in response to being called the expression of domain I-CSCF equipment return Caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to Charging Collection Function by the message of double-talk CCF equipment, so that CCF equipment is according to charge accounting between caller domain domain name, called domain I-CSCF domain names progress domain.
When the equipment of the cross-domain charge accountings of IMS is caller domain service call conversation control function S-CSCF equipment, message Receiving module 602 is specifically used for receiving from Proxy Call Session Control Function P-CSCF equipment or access gateway control function The call request message of AGCF equipment;Wherein, caller domain domain name is caller domain S-CSCF domain names.
When the equipment of the cross-domain charge accountings of IMS is caller domain I-CSCF equipment, message reception module 602 is specifically used for Receive the call request message from multimedia gateway control function MGCF equipment;Wherein, caller domain domain name is caller domain I- CSCF domain names.
In one embodiment, settlement information processing module 608 is specifically used for passing through accounting request ACR message by caller Domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to CCF equipment.
The equipment of the realization cross-domain charge accountings of IMS of the embodiment of the present invention, such as caller domain S/I-CSCF equipment, increase is sentenced The Query Information of various-service logic, the called number returned according to telephone number mapped system or domain name system differentiates that the business is No inter-domain call, and the charge accounting information needed for IMS inter-domain calls is issued into CCF and is recorded, to not change network Structure realizes charging and clearing between IMS domain in the case of not increasing network element device.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can pass through hardware It completes, relevant hardware can also be instructed to complete by program, the program can be stored in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of method for realizing the cross-domain charge accountings of IP multimedia subsystem IMS, including:
Caller domain Call-Establish-Success rate equipment receives call request message, this calling is obtained from the call request message IMS charging identifier and called number;
Using called number inquiry is initiated to telephone number mapped system or domain name system;
If the query result that telephone number mapped system or domain name system return is called domain query call conversation control function I-CSCF domain names, it is determined that this calling is inter-domain call, is sent out the call request message according to called domain I-CSCF domain names It is sent to called domain I-CSCF equipment;
Track call state, in response to be called domain I-CSCF equipment return expression double-talk message, by caller domain domain name, Called domain I-CSCF domain names, IMS charging identifier are sent to Charging Collection Function CCF equipment, so that CCF equipment is according to caller domain domain Name, called domain I-CSCF domain names carry out charge accounting between domain.
2. according to the method described in claim 1, it is characterized in that, caller domain Call-Establish-Success rate equipment reception calling is asked The message is asked to include:Caller domain service call conversation control function S-CSCF equipment, which receives, comes from Proxy Call Session Control Function P- The call request message of CSCF equipment or access gateway control function AGCF equipment;
It is described that caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to Charging Collection Function CCF equipment packets It includes:Caller domain S-CSCF domain names, called domain I-CSCF domain names, IMS charging identifier are sent to CCF and set by caller domain S-CSCF equipment It is standby.
3. according to the method described in claim 1, it is characterized in that, caller domain Call-Establish-Success rate equipment reception calling is asked The message is asked to include:Caller domain I-CSCF equipment receives the call request message from multimedia gateway control function MGCF equipment;
It is described that caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to Charging Collection Function CCF equipment packets It includes:Caller domain I-CSCF domain names, called domain I-CSCF domain names, IMS charging identifier are sent to CCF and set by caller domain I-CSCF equipment It is standby.
4. according to the method described in claim 1, it is characterized in that, it is described by caller domain domain name, called domain I-CSCF domain names, IMS charging identifier is sent to Charging Collection Function CCF equipment:
Caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to CCF and set by accounting request ACR message It is standby.
5. according to the method described in claim 1, it is characterized in that, the CCF equipment is according to caller domain domain name, called domain I- CSCF domain names carry out domain between charge accounting include:
CCF equipment is retrieved to obtain by caller domain domain name and called domain I-CSCF domain names is related to corresponding caller domain and called domain Cross-domain ticket, and charge accounting between domain is carried out according to the cross-domain ticket that retrieves.
6. a kind of equipment for realizing the cross-domain charge accountings of IP multimedia subsystem IMS, including:
Message reception module obtains the IMS meters of this calling for receiving call request message from the call request message Take mark and called number;
Enquiry module, for initiating inquiry to telephone number mapped system or domain name system using called number;
Calling module, if being called domain query call for the query result that telephone number mapped system or domain name system return Conversation control function I-CSCF domain names, it is determined that this calling is inter-domain call, is exhaled described according to called domain I-CSCF domain names Request message is made to be sent to called domain I-CSCF equipment;
Settlement information processing module, it is logical in response to being called the expression both sides that domain I-CSCF equipment returns for tracking call state Caller domain domain name, called domain I-CSCF domain names, IMS charging identifier are sent to Charging Collection Function CCF equipment by the message of words, So that CCF equipment is according to charge accounting between caller domain domain name, called domain I-CSCF domain names progress domain.
7. equipment according to claim 6, which is characterized in that
It is described when the equipment of the cross-domain charge accountings of the IMS is caller domain service call conversation control function S-CSCF equipment Message reception module is specifically used for receiving from Proxy Call Session Control Function P-CSCF equipment or access gateway control function The call request message of AGCF equipment;
Wherein, caller domain domain name is caller domain S-CSCF domain names.
8. equipment according to claim 6, which is characterized in that
When the equipment of the cross-domain charge accountings of the IMS is caller domain I-CSCF equipment, the message reception module is specifically used for Receive the call request message from multimedia gateway control function MGCF equipment;
Wherein, caller domain domain name is caller domain I-CSCF domain names.
9. equipment according to claim 6, which is characterized in that
The settlement information processing module is specifically used for passing through accounting request ACR message by caller domain domain name, called domain I-CSCF Domain name, IMS charging identifier are sent to CCF equipment.
10. a kind of system for realizing the cross-domain charge accountings of IP multimedia subsystem IMS, including:Described in claim any one of 6-9 The cross-domain charge accountings of IMS equipment and Charging Collection Function CCF equipment;CCF equipment is for receiving and recording the cross-domain chargings of IMS Caller domain domain name that the equipment of clearing is sent, called domain I-CSCF domain names, IMS charging identifier, and according to caller domain domain name, called Domain I-CSCF domain names carry out charge accounting between domain.
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