CN102404708B - Method and system for choosing domain of called user and HLR (Home Location Register) in system - Google Patents
Method and system for choosing domain of called user and HLR (Home Location Register) in system Download PDFInfo
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- CN102404708B CN102404708B CN201010274401.8A CN201010274401A CN102404708B CN 102404708 B CN102404708 B CN 102404708B CN 201010274401 A CN201010274401 A CN 201010274401A CN 102404708 B CN102404708 B CN 102404708B
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Abstract
The invention provides a method and a system for choosing domain of called user and HLR (Home Location Register) responsible for domain choosing. The method for choosing domain of called user comprises the following steps of: the HLR acquires that the calling user in the CS domain calls the called user; the HLR confirms the registered state of the called user in the CS domain; the HLR inquires the home location server HLS to confirm the terminal type of the called user and the registered state in the IMS domain; the HLR routs the call according to the registered state of the confirmed called user in the CS domain, the terminal type of the called user and the registered state of the called user in the IMS domain. The method and system can realize domain choose of called user when the users in CS domain initiate calls by configuring the HLR for inquiring the HSS to acquire the terminal type of the called user and the registered state in the IMS domain without changing the existing network structure and increasing new servers.
Description
Technical field
The application relates to moving communicating field, relates in particular to a kind of called subscriber's area selecting method and system, and HLR in system.
Background technology
Voice call continuity service (VCC, Voice Call Continuity) refers to the continuity of audio call between circuit switching (CS territory) in the second generation/third generation (2G/3G) mobile radio communication and IP Multimedia System (IMS territory).The subject matter that VCC solves is to switch, and comprises that IMS territory is switched to He CongCS territory, CS territory and is switched to IMS territory.The cross-domain problem of voice is selected to solve in the territory of VCC, and it can not solve the problem of called subscriber's network selection.
Number is in the time that operator exists multiple core networks, to share the system of same set of yard number altogether, and code number identical in common coding system can be resident in multiple core networks at the same time or separately.For example, user is signing CS territory and CM-IMS territory simultaneously, and uses duplicate numbers in these two territories.For the user of common number, the problem that existence domain is selected.For example, there is the user of number altogether for CS territory and IMS territory, need to solve the land network selection problem of called subscriber in CS territory and IMS territory.
Core network system and the method for calling of supporting different field general terminal are disclosed in the Chinese patent application that is 200810226499.2 at application number.In this patent, the service control point SCP of CS domain core net can with attaching position register (HLR, Home Location Register) and home subscriber server (HSS, Home Subscriber Server) mutual, and increase network selection application server in IMS territory, network selection application server and HLR and HSS mutual and with CSCF (CSCF, Call Session Control Function) communication connection, according to the log-on message of terminal and network selection policy information instruction CSCF network selection.But the core network system in this application need to increase network selection application server, and need to improve SCP SCP, complicated structure simultaneously.
Summary of the invention
The technical problem that the application will solve is, for above-mentioned defect of the prior art, a kind of called subscriber's area selecting method and system are provided, can realize CS territory user called subscriber's while making a call territory and select, and avoid changing the structure of existing network and increase new server.
According to the application aspect, a kind of called subscriber's area selecting method is provided, comprise that attaching position register HLR knows that CS territory calling subscriber makes a call to called subscriber; Described HLR determines the login state of described called subscriber in CS territory; Described HLR inquiry home subscriber server HSS determines described called subscriber's terminal type and the login state in IMS territory thereof; And described HLR according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, call out described in route.
According to another aspect of the application, a kind of attaching position register HLR is provided, comprise determination module, in the time that CS territory calling subscriber makes a call to called subscriber, determine the login state of described called subscriber in CS territory, and inquire about to determine described called subscriber's terminal type and the login state in IMS territory thereof to home subscriber server HSS; And routing decision module, according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, call out described in route.
According to another aspect of the application, a kind of called subscriber's domain selecting system is provided, comprise attaching position register HLR and home subscriber server HSS, it is characterized in that, in the time that CS territory calling subscriber makes a call to called subscriber, described HLR determines the login state of described called subscriber in CS territory; Described HLR inquires about described HSS and determines described called subscriber's terminal type and the login state in IMS territory thereof; And described HLR according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, call out described in route.
According to the application, by configuration, HLR inquires about HSS and obtains called subscriber's terminal type and the login state in IMS territory thereof, without changing the structure of existing network and increasing new server, just can realize CS territory user called subscriber's while making a call territory selection.
Brief description of the drawings
Fig. 1 shows while making a call according to the CS territory user of a kind of execution mode of the application, the method flow diagram that called user domain is selected.
Fig. 2 shows while making a call according to the CS territory user of the application's another kind of execution mode, the flow chart that called user domain is selected.
Fig. 3 shows the framework comprising according to the core net of called subscriber's domain selecting system of the application.
Fig. 4 shows according to the module map of the attaching position register HLR of a kind of execution mode of the application.
Fig. 5 shows according to the module map of the attaching position register HLR of the application's another kind of execution mode.
Embodiment
Area selecting method and system to called subscriber in the application disclosed CS territory and IMS territory with reference to the accompanying drawings, and HLR in this system is elaborated.
Fig. 1 shows while making a call according to the CS territory user of a kind of execution mode of the application, the method flow diagram that called user domain is selected.
As shown in Figure 1, in step 110, attaching position register HLR knows that CS territory calling subscriber makes a call to called subscriber.For example, in the time that calling subscriber makes a call in CS territory, mobile switching center server MSC S sends message to attaching position register HLR, and instruction HLR calling subscriber makes a call in CS territory.
In step 120, HLR determines the login state of called subscriber in CS territory.Be appreciated that HLR can determine the login state of called subscriber in CS territory by the registration status information of inquiring about the CS territory terminal of self storing.
In step 130, HLR inquiry home subscriber server HSS determines called subscriber's terminal type and the login state in IMS territory thereof.
According to a kind of execution mode, step 130 may further include: HLR sends query messages to HSS; In response to query messages, HSS returns to acknowledge message to HLR, has carried called subscriber's terminal type and the called subscriber registration status information in IMS territory in this acknowledge message; And HLR is according to the acknowledge message receiving from HSS, determines called subscriber's terminal type and the login state in IMS territory thereof.Be appreciated that the registration status information that stores IMS territory terminal in HSS, also can storage terminal type in HSS.Alternatively, when in HSS not when storage terminal type, HSS can obtain terminal type by the mode of the application server AS in inquiry IMS territory.According to the application, HLR can determine called subscriber's terminal type and the login state in IMS territory thereof by the mode of inquiry HSS.
In step 140, HLR can be according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, routing call.
According to a kind of execution mode, for singly treating terminal, can directly determine routing mode according to called subscriber at the login state of CS territory and IMS.
That is to say, when called subscriber's terminal type is for singly treating terminal, be registered at the login state in CS territory, and at the login state in IMS territory while being unregistered, and HLR routes the call to the CS territory user that continues.When called subscriber's terminal type is for singly treating terminal, be unregistered at the login state in CS territory, and at the login state in IMS territory while being registered, HLR routes the call to the IMS territory user that continues.When called subscriber's terminal type is for singly treating terminal, be unregistered at the login state in CS territory, and while being unregistered, this calling do not carried out to route at the login state in IMS territory.At this moment, HLR is for example can subscriber call called unregistered.
According to a kind of execution mode, in the time that called subscriber's terminal type is double-standby terminal, HLR inquiry HSS determines the voice service login state of called subscriber in IMS territory, further according to called subscriber the voice service login state in IMS territory and called subscriber the login state in CS territory, routing call.Due to for double-standby terminal, not allly can both support voice service in the registered terminal in IMS territory, thereby can answer the call in IMS territory, therefore need to determine the voice service login state of terminal called.In addition,, even double-standby terminal also can exist current situation about only registering in a territory, therefore, need to determine routing mode according to actual login state.
According to a kind of embodiment, when called subscriber is unregistered at the voice service login state in IMS territory, at the login state in CS territory while being registered, HLR routes the call to the CS territory user that continues.When called subscriber is unregistered at the voice service login state in IMS territory, while being unregistered, this calling is not carried out to route at the login state in CS territory.Now, can think that for example called subscriber is current in off-mode.
According to another kind of embodiment, when called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory while being unregistered, HLR routes the call to the IMS territory user that continues.When called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory, while being registered, HLR indicates triggering intelligent network service.That is to say, when called subscriber treats in two, and two territory be all can answer the call time, and HLR can indicate triggering intelligent network service.For example, in intelligent network business, can carry out follow-up Business Processing by the service control point SCP of CS domain core net, for example, trigger one number service.
According to a kind of execution mode, HLR routes the call to continue user's step of CS territory and can comprise: HLR is to mobile switching center server MSC S transmitting terminal CAMEL-Subscription-Information or mobile station roaming number.MSCS, according to the terminal unit contractual information or the mobile station roaming number that receive, notifies called subscriber CS territory to answer the call.
According to a kind of execution mode, HLR routes the call to continue user's step of IMS territory and can comprise: HLR sends the instruction that continues of IMS territory to mobile switching center server MSC S.For example, sending routing number+called number (RN+B) message, continues in instruction IMS territory.MSCS receives from the IMS territory of HLR and continues after instruction, sends initial session request, to notify called subscriber IMS territory to answer the call to MGCF MGCF.For example, MGCF receives after the message from MSCS, sends instruction to CSCF CSCF, is answered the call by IMS territory by CSCF.
Fig. 2 shows while making a call according to the CS territory user of a kind of execution mode of the application, the idiographic flow that called subscriber UE2 territory is selected.
In the time that calling subscriber UE1 makes a call in CS territory, in step 201, initial address message is sent to mobile switching center server MSC S.Wherein, in initial address message, carry the code number of called subscriber UE2.In step 202, MSCS sends message to attaching position register HLR, and instruction CS territory calling subscriber makes a call to called subscriber UE2.
HLR is from MSCS knows that CS territory calling subscriber makes a call to called subscriber UE2, and in step 203, the registration status information of the CS territory terminal of HLR inquiry self storage is determined the login state of called subscriber UE2 in CS territory.
In step 204, HLR sends query messages to HSS, the terminal type of inquiry called subscriber UE2 and the login state in IMS territory thereof.
In step 205, HSS returns to acknowledge message to HLR, wherein, has carried terminal type and the login state in IMS territory thereof in acknowledge message.
HLR can be according to determined called subscriber UE2 at the terminal type of the login state in CS territory, called subscriber UE2 and called subscriber UE2 the login state in IMS territory, routing call.
For example, when the terminal type of called subscriber UE2 is for singly treating terminal, be registered at the login state in CS territory, and at the login state in IMS territory while being unregistered, HLR routes the call to the CS territory user that continues.Now, in step 206, HLR sends normal terminal unit contractual information T-CSI or mobile station roaming number MSRN to MSCS, thereby in step 207, MSCS sends initial session request according to terminal unit contractual information T-CSI or mobile station roaming number MSRN to called subscriber UE2, notifies called subscriber UE2CS territory to answer the call.
When the terminal type of called subscriber UE2 is for singly treating terminal, be unregistered at the login state in CS territory, and at the login state in IMS territory while being registered, HLR routes the call to the IMS territory user that continues.Now, in step 206 ' in, HLR sends the instruction that continues of IMS territory to MSCS, for example, and transmission routing number+called number (RN+B) message.MSCS receives from the IMS territory of HLR and continues after instruction, in step 208, sends initial session request, to notify called subscriber IMS territory to answer the call to MGCF MGCF.MGCF receives after the message from MSCS, in step 209, notifies called subscriber UE2 to answer the call by IMS territory.For example, MGCF can send instruction to CSCF CSCF (not shown), further notifies called subscriber UE2 to answer the call by IMS territory by CSCF.
When described called subscriber's terminal type is for singly treating terminal, be unregistered at the login state in CS territory, and while being unregistered, this calling do not carried out to route at the login state in IMS territory.
In the time confirming that in step 205 called subscriber's terminal type is double-standby terminal, HLR will further send query messages to HSS in step 210, and inquiry called subscriber UE2 is at the voice service login state in IMS territory.In step 211, HSS returns to acknowledge message to HLR, wherein, has carried the voice service registration status information of called subscriber UE2 in IMS territory in acknowledge message.Now, HLR can be according to called subscriber the voice service login state in IMS territory and called subscriber the login state in CS territory, routing call.
For example, when called subscriber is unregistered at the voice service login state in IMS territory, at the login state in CS territory while being registered, HLR execution step 206, routes the call to the CS territory user that continues.When called subscriber is unregistered at the voice service login state in IMS territory, at the login state in CS territory, while being unregistered, HLR does not carry out route to this calling.
When called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory while being unregistered, HLR execution step 206 ', routes the call to the IMS territory user that continues.
When called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory, while being registered, HLR indicates triggering intelligent network service.Wherein, the execution of intelligent network business similarly to the prior art, does not repeat them here.
Fig. 3 shows the framework having according to the core net of called subscriber's domain selecting system of the application.
As shown in Figure 3, the system of selecting according to the application's called user domain comprises: attaching position register HLR300 and home subscriber server HSS400.In the time that CS territory calling subscriber makes a call to called subscriber, HLR300 determines the login state of called subscriber in CS territory; HLR300 inquiry HSS400 determines called subscriber's terminal type and the login state in IMS territory thereof; And HLR300 according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, routing call.
According to a kind of execution mode, the system that the application's called user domain is selected may further include mobile switching center server MSC S500, described HLR according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, determine after the routing mode of calling out, send route instruction to described MSCS, described MSCS notifies described called subscriber CS territory or IMS territory to answer the call according to receiving route instruction.
According to a kind of execution mode, the system that the application's called user domain is selected may further include MGCF MGCF600 and CSCF CSCF700, in the time that described MSCS notifies described called subscriber IMS territory to answer the call according to the route instruction receiving, described MSCS sends initial session request to described MGCF, described MGCF is the described CSCF of instruction further, notifies called subscriber to answer the call by IMS territory by CSCF.
Fig. 4 shows according to the module map of the attaching position register HLR of a kind of execution mode of the application.
As shown in the figure, attaching position register HLR comprises determination module 310 and routing decision module 320.In the time that CS territory calling subscriber makes a call to called subscriber, determination module 310 is determined the login state of called subscriber in CS territory, and inquires about to determine called subscriber's terminal type and the login state in IMS territory thereof to home subscriber server HSS.Routing decision module 320 according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, routing call.
According to a kind of execution mode, when called subscriber's terminal type is for singly treating terminal, be registered at the login state in CS territory, and at the login state in IMS territory while being unregistered, routing decision module routes the call to the CS territory user that continues; When called subscriber's terminal type is for singly treating terminal, be unregistered at the login state in CS territory, and at the login state in IMS territory while being registered, routing decision module routes the call to the IMS territory user that continues; And when called subscriber's terminal type is for singly treating terminal, be unregistered at the login state in CS territory, and at the login state in IMS territory while being unregistered, routing decision module is not carried out route to this calling.
According to another kind of execution mode, in the time that called subscriber's terminal type is double-standby terminal, determination module inquiry HSS determines the voice service login state of called subscriber in IMS territory, routing decision module according to called subscriber the voice service login state in IMS territory and called subscriber the login state in CS territory, routing call.According to a kind of embodiment, when called subscriber is unregistered at the voice service login state in IMS territory, at the login state in CS territory while being registered, routing decision module routes the call to the CS territory user that continues; And when called subscriber be unregistered at the voice service login state in IMS territory, at the login state in CS territory, while being unregistered, routing decision module is not carried out route to this calling.According to another kind of embodiment, when called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory while being registered, routing decision module instruction triggering intelligent network service; And when called subscriber be registered at the voice service login state in IMS territory, at the login state in CS territory while being unregistered, routing decision module routes the call to the IMS territory user that continues.
Fig. 5 shows according to the module map of the attaching position register HLR of the application's another kind of execution mode.
As shown in Figure 5, the determination module 310 in HLR may further include query unit 311 and determining unit 312.Query unit 311 can send query messages to HSS.Determining unit 312 can be according to the acknowledge message receiving from HSS, determines called subscriber's terminal type and the login state in IMS territory thereof.
In addition, the routing decision module 320 in HLR300 may further include route judging unit 321 and route indicating member 322.Route judging unit 321 can be according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber at the login state in IMS territory, judge routing mode.Route indicating member 322 can be according to judged routing mode, instruction mobile switching center server MSC S routing call.
With reference to accompanying drawing, the application's exemplary embodiment is described above.Those skilled in the art should understand that; above-mentioned embodiment is only used to the object illustrating and the example of lifting; instead of be used for limiting; any amendment of doing under all instructions in the application and claim protection range, be equal to replacement etc., all should be included in the claimed scope of the application.
Claims (16)
1. called subscriber's a area selecting method, comprising:
Attaching position register HLR knows that CS territory calling subscriber makes a call to called subscriber;
Described HLR determines the login state of described called subscriber in CS territory;
Described HLR inquiry home subscriber server HSS determines described called subscriber's terminal type and the login state in IMS territory thereof; And
Described HLR according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, call out described in route,
Wherein, described method further comprises: in the time that described called subscriber's terminal type is double-standby terminal, described HLR inquires about described HSS and determines the voice service login state of described called subscriber in IMS territory, according to described called subscriber the voice service login state in IMS territory and called subscriber the login state in CS territory, call out described in route.
2. method according to claim 1, further comprises:
When described called subscriber's terminal type is when singly until terminal, be registered at the login state in CS territory, and at the login state in IMS territory while being unregistered, described HLR is by described call routing to the CS territory user that continues;
When described called subscriber's terminal type is when singly until terminal, be unregistered at the login state in CS territory, and at the login state in IMS territory while being registered, described HLR is by described call routing to the IMS territory user that continues; And
When described called subscriber's terminal type is when singly until terminal, be unregistered at the login state in CS territory, and while being unregistered, this calling do not carried out to route at the login state in IMS territory.
3. method according to claim 1, further comprises:
When described called subscriber is unregistered at the voice service login state in IMS territory, at the login state in CS territory while being registered, described HLR is by described call routing to the CS territory user that continues; And
When described called subscriber is unregistered at the voice service login state in IMS territory, while being unregistered, this calling is not carried out to route at the login state in CS territory.
4. method according to claim 1, further comprises:
When described called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory while being registered, described HLR instruction triggering intelligent network service; And
When described called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory while being unregistered, described HLR is by described call routing to the IMS territory user that continues.
5. method according to claim 1, wherein, HLR inquiry HSS determines that described called subscriber's terminal type and the step at the login state in IMS territory thereof comprise:
Described HLR sends query messages to described HSS;
In response to described query messages, described HSS returns to acknowledge message to described HLR, wherein, has carried called subscriber's terminal type and the called subscriber registration status information in IMS territory in described acknowledge message; And
Described HLR, according to the acknowledge message receiving from described HSS, determines called subscriber's terminal type and the login state in IMS territory thereof.
6. method according to claim 2, wherein, HLR comprises continue user's step of described call routing to CS territory:
Described HLR is to mobile switching center server MSC S transmitting terminal CAMEL-Subscription-Information or mobile station roaming number; And
Described MSCS, according to the terminal unit contractual information or the mobile station roaming number that receive, notifies described called subscriber CS territory to answer the call.
7. method according to claim 2, wherein HLR comprises continue user's step of described call routing to IMS territory:
Described HLR sends the instruction that continues of IMS territory to mobile switching center server MSC S; And
Described MSCS receives from the IMS territory of described HLR and continues after instruction, sends initial session request, to notify described called subscriber IMS territory to answer the call to MGCF MGCF.
8. an attaching position register HLR, comprising:
Determination module, in the time that CS territory calling subscriber makes a call to called subscriber, determines the login state of described called subscriber in CS territory, and inquires about to determine described called subscriber's terminal type and the login state in IMS territory thereof to home subscriber server HSS; And
Routing decision module, according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, call out described in route
Wherein, in the time that described called subscriber's terminal type is double-standby terminal, described determination module is inquired about described HSS and is determined the voice service login state of described called subscriber in IMS territory, described routing decision module according to described called subscriber the voice service login state in IMS territory and called subscriber the login state in CS territory, call out described in route.
9. HLR according to claim 8, wherein, when described called subscriber's terminal type is for singly treating terminal, be registered at the login state in CS territory, and at the login state in IMS territory while being unregistered, described routing decision module is by described call routing to the CS territory user that continues; When described called subscriber's terminal type is for singly treating terminal, be unregistered at the login state in CS territory, and at the login state in IMS territory while being registered, described routing decision module is by described call routing to the IMS territory user that continues; And when described called subscriber's terminal type is for singly treating terminal, be unregistered at the login state in CS territory, and at the login state in IMS territory while being unregistered, described routing decision module is not carried out route to this calling.
10. HLR according to claim 8, wherein, when described called subscriber is unregistered at the voice service login state in IMS territory, at the login state in CS territory while being registered, described routing decision module is by described call routing to the CS territory user that continues; And
When described called subscriber is unregistered at the voice service login state in IMS territory, at the login state in CS territory, while being unregistered, described routing decision module is not carried out route to this calling.
11. HLR according to claim 8, wherein, when described called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory while being registered, described routing decision module instruction triggering intelligent network service; And
When described called subscriber is registered at the voice service login state in IMS territory, at the login state in CS territory while being unregistered, described routing decision module is by described call routing to the IMS territory user that continues.
12. HLR according to claim 8, described determination module further comprises:
Query unit, sends query messages to described HSS;
Determining unit, according to the acknowledge message receiving from described HSS, determines called subscriber's terminal type and the login state in IMS territory thereof.
13. HLR according to claim 8, described routing decision module further comprises:
Route judging unit, according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber at the login state in IMS territory, judge routing mode;
Route indicating member, according to judged routing mode, calls out described in instruction mobile switching center server MSC S route.
14. 1 kinds of called subscribers' domain selecting system, comprises attaching position register HLR and home subscriber server HSS, it is characterized in that, described attaching position register HLR comprises:
Determination module, in the time that CS territory calling subscriber makes a call to called subscriber, determines the login state of described called subscriber in CS territory, and inquires about to determine described called subscriber's terminal type and the login state in IMS territory thereof to described home subscriber server HSS; And
Routing decision module, according to determined called subscriber the login state in CS territory, called subscriber's terminal type and called subscriber the login state in IMS territory, call out described in route,
Wherein, in the time that described called subscriber's terminal type is double-standby terminal, described determination module is inquired about described HSS and is determined the voice service login state of described called subscriber in IMS territory, described routing decision module according to described called subscriber the voice service login state in IMS territory and called subscriber the login state in CS territory, call out described in route.
15. systems as claimed in claim 14, further comprise mobile switching center server MSC S, described HLR sends route instruction to described MSCS, and described MSCS notifies described called subscriber CS territory to answer the call according to the route instruction receiving or IMS territory answers the call.
16. systems as claimed in claim 15, further comprise MGCF MGCF and CSCF CSCF, in the time that described MSCS notifies described called subscriber IMS territory to answer the call according to the route instruction receiving, described MSCS sends initial session request to described MGCF, described MGCF is the described CSCF of instruction further, notifies called subscriber to answer the call by IMS territory by CSCF.
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| CN101267577A (en) * | 2007-03-13 | 2008-09-17 | 华为技术有限公司 | Method, system and device for call relay and intelligent service |
| CN101843072B (en) * | 2007-06-01 | 2014-04-16 | 捷讯研究有限公司 | System and method for managing mobile-terminated (mt) calls in IMS network environment using alternative signaling |
| CN101466155B (en) * | 2007-12-21 | 2011-05-04 | 华为软件技术有限公司 | Method and system for call connection between CS domain and IMS domain |
-
2010
- 2010-09-07 CN CN201010274401.8A patent/CN102404708B/en not_active Expired - Fee Related
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| CN102404708A (en) | 2012-04-04 |
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