CN102202304B - Calling protection method, MSC and terminal - Google Patents
Calling protection method, MSC and terminal Download PDFInfo
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- CN102202304B CN102202304B CN201110135226.9A CN201110135226A CN102202304B CN 102202304 B CN102202304 B CN 102202304B CN 201110135226 A CN201110135226 A CN 201110135226A CN 102202304 B CN102202304 B CN 102202304B
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000007689 inspection Methods 0.000 claims abstract description 16
- 238000010200 validation analysis Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000003213 activating effect Effects 0.000 claims description 5
- 238000012795 verification Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
The present invention relates to a kind of calling protection method, MSC and terminal, its method comprises: MSC receives the user profile of the terminal called that VLR sends; When user profile comprises the information of terminal called unlatching calling protection function, after MSC receives the connection message of terminal called transmission, connection inspection is carried out to connection message; When connection is checked and verified successfully, connection message is fed back to calling terminal by MSC, sets up call.Endpoint registration in the present invention also activates calling protection function; when there being incoming call; terminal use needs input validation code; call could be set up; complete the process to incoming call, available protecting user can process right and the privacy of incoming call, effectively avoid because user misoperation causes omitting the situation of incoming call or non-original idea process incoming call simultaneously; improve the safety in utilization of terminal, also improve Consumer's Experience effect simultaneously.
Description
Technical field
The present invention relates to communication technique field, particularly relate to a kind of calling protection method, MSC (Mobile-ServicesSwitchingCenter, Information Mobile Service switching center) and terminal.
Background technology
No matter be 2G (secondgeneration, second generation mobile communication technology) epoch or 3G is (3rdGeneration, G mobile communication) epoch, voice call is all one of function of the most frequently using of mobile subscriber, no matter the mobile terminal of which kind of type, all needs the function that support voice is conversed.
But user, when using voice calling service, can run into following problem usually:
On the one hand, along with the development of mobile communication technology, user more and more payes attention to the protection of individual privacy; when mobile terminal not user at one's side time; terminal has incoming call, and this user does not wish that other users arbitrarily process the incoming call of oneself, and this just needs a kind of calling protection technology.
On the other hand, along with the continuous renewal of mobile terminal hardware technology, increasing mobile terminal all supports touch screen technology, and user directly clicks on screen can realize corresponding function.But the use of touch-screen, too increases the possibility that misoperation occurs when user processes incoming information in some cases simultaneously.Such as in way on and off duty, if user is placed on mobile phone in pocket or bag, now cell phone incoming call, then may occur in user and send a telegram here in unwitting situation at all and answered or hang up; Or user hears electric bell sound, when taking out mobile phone from pocket or bag, being not intended to touch keystroke handling region corresponding on screen, causing non-original idea to be answered or hanging up calling.Therefore, be necessary carrying out electric interface protection.
In existing voice call technology, normal voice call calling, process of answering are specific as follows:
Calling terminal (MobileStation, MSA) transmission sets up message to MSC, MSC sends call proceeding message to calling terminal after confirming this message, and MSC sends to terminal called (MSB) and sets up message, and terminal called then returns confirming call message.After channel allocation completes, terminal called sends reminder message to MSC, and calling terminal receives reminder message afterwards.Terminal called is after confirmation is answered, and send connection message to MSC, MSC sends connection message to calling terminal.After calling terminal receives this message, to MSC feedback link acknowledgement message, MSC returns CONNect Acknowledgement message to called again.Now calling and called both sides set up call.
Wherein more specifically, after calling terminal receives call proceeding message, MSC is to VLR (VisitorLocationRegister, VLR Visitor Location Register) send inquiry terminal called message, after paging completes, MSC sends access request message to VLR, first VLR starts authorizing procedure afterwards, after MSC correctly processes, authentication response message is fed back to VLR, VLR is after processing authentication response message, send access request to MSC and accept message, the this time access request of notice MSC terminal called is accepted, and by completing the user profile of message related to calls to MSC loopback terminal called.Afterwards, MSC sends to terminal called and sets up message.
According to bottom voice call signaling, in conjunction with the processing mode of terminal APP (application layer), the handling process of terminal caller information is specific as follows:
After bottom sends incoming information to terminal upper strata, upper strata creates correlation window information, and terminal demonstration carrys out electric interface and jingle bell.User carries out respective handling carrying out electric interface.If terminal called is by Answer Key, terminal called feedback link message to MSC, MSC by this information feed back to calling terminal, and to terminal called feedback link acknowledgement message, calling and called both sides set up call.
As the above analysis, in existing voice call incoming call flow process, the electric interface that comes of terminal called does not adopt corresponding safeguard measure, easily causes incoming information non-user or original idea operation, reduces safety in utilization and the Consumer's Experience effect of mobile terminal.
Summary of the invention
Main purpose of the present invention is to provide a kind of calling protection method, MSC and terminal, is intended to the safety in utilization and the Consumer's Experience effect that improve mobile terminal.
In order to achieve the above object, the present invention proposes a kind of calling protection method, comprising:
MSC receives the user profile of the terminal called that VLR sends;
When described user profile comprises the information of terminal called unlatching calling protection function, after MSC receives the connection message of terminal called transmission, connection inspection is carried out to described connection message;
When connection is checked and verified successfully, described connection message is fed back to calling terminal by MSC, sets up call.
Preferably, described MSC also comprises before receiving the step of the user profile of the terminal called that VLR sends:
MSC sends inquiry called message to VLR, and described inquiry called message comprises: require whether inquiry terminal called registers the information of incoming call function.
Preferably, described MSC comprises the step that described connection message carries out connecting inspection:
Point out described terminal called feedback validation code;
When the identifying code that described terminal called feeds back is correct, connects and check and verify successfully; Otherwise the failure of prompting user rs authentication code, requires to re-enter, until when incoming call time-out, connect and check and verify failure.
The present invention also proposes a kind of calling protection MSC, comprising:
Receiver module, for receiving the user profile of the terminal called that VLR sends;
Connect checking module, for comprise when described user profile terminal called open the information of calling protection function time, MSC carries out connection inspection to described connection message after receiving the connection message that terminal called sends;
Module is set up in call, for checking and verifying successfully when connection, described connection message is fed back to calling terminal, sets up call.
Preferably, also comprise sending module, for sending inquiry called message to VLR, described inquiry called message comprises: require whether inquiry terminal called registers the information of incoming call function.
Preferably, described connection checking module comprises:
Tip element, for pointing out described terminal called feedback validation code;
Authentication unit, when the identifying code for feeding back at described terminal called is correct, connects and checking and verifying successfully; Otherwise the failure of prompting user rs authentication code, requires to re-enter, until when incoming call time-out, connect and check and verify failure.
The present invention also proposes a kind of calling protection terminal, comprising:
Function register module, for server registration calling protection function;
Function and protecting module, for activating described calling protection function, and is updated to VLR by described server by active information;
Connectivity verification module, in called flow, when receive MSC send set up message after, to described MSC feedback link message, accept the connection inspection of described MSC simultaneously;
Module is set up in call, for checking and verifying successfully when connection, sets up the call between calling terminal by described MSC.
Preferably, described function and protecting module is also for closing described calling protection function in predefined conditions.
Preferably, described function and protecting module is also for opening described calling protection function within a predetermined period of time.
Preferably, described server is arranged in HLR.
A kind of calling protection method that the present invention proposes, MSC and terminal; endpoint registration also activates calling protection function; when there being incoming call; terminal use needs input validation code, could set up call, completes the process to incoming call; available protecting user can process right and the privacy of incoming call; effectively avoid the situation because user misoperation causes omission incoming call or non-original idea process to be sent a telegram here simultaneously, improve the safety in utilization of terminal, also improve Consumer's Experience effect simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of calling protection method one embodiment of the present invention;
Fig. 2 a is once successfully audio call and the reciprocal process schematic diagram that receives in flow process between calling terminal, MSC and terminal called in calling protection method one embodiment of the present invention;
Once successfully audio call and the reciprocal process schematic diagram that receives in flow process between MSC, VLR and terminal called MSB in Fig. 2 b calling protection method one of the present invention embodiment;
Fig. 3 is the structural representation of calling protection MSC mono-embodiment of the present invention;
Fig. 4 connects the structural representation checking mould in calling protection MSC mono-embodiment of the present invention;
Fig. 5 is calling protection terminal one example structure schematic diagram of the present invention.
In order to make technical scheme of the present invention clearly, understand, be described in further detail below in conjunction with accompanying drawing.
Embodiment
Solution for embodiment of the invention is mainly: terminal is by registering and activating calling protection function, and when there being incoming call, terminal use needs input validation code, normally could complete the process to incoming call, to improve safety in utilization and the Consumer's Experience effect of terminal.
As shown in Figure 1, one embodiment of the invention proposes a kind of calling protection method, comprising:
Step S101, MSC receive the user profile of the terminal called that VLR sends;
In the present embodiment, in order to protect accordingly incoming call flow process when realizing incoming call, have employed the mode of identifying code.
Particularly, in incoming call flow process, in the inquiry called message that MSC sends to VLR, comprise requirement and inquire about the information whether terminal called registers calling protection function.In the user profile of VLR to MSC loopback terminal called, comprise the state that terminal called MSB starts this calling protection function.
Step S102, when user profile comprises the information of terminal called unlatching calling protection function, after MSC receives the connection message of terminal called transmission, carries out connection inspection to connection message;
Step S103, when connection is checked and verified successfully, connection message is fed back to calling terminal by MSC, sets up call.
In above-mentioned steps S102 and step S103, if terminal called enables this function, then what send to terminal called at MSC sets up in message, require that terminal called is when feedback link message, first MSC checks this link information, needs terminal called input validation code, namely carries out connection inspection, when the identifying code of terminal called feedback is correct, connecting checks and verifies successfully, and connection message is fed back to calling terminal by MSC, then sets up call, otherwise the failure of prompting user rs authentication code, re-enters.Until after incoming call time-out, connect and check and verify failure, hang up and return.
As shown in Figure 2 a, the present embodiment after terminal called activates calling protection function, complete once successfully audio call and receive flow process time, the reciprocal process between calling terminal MSA, MSC and terminal called MSB is:
1, calling terminal MSA sends to MSC and sets up message;
2, MSC feeds back to calling terminal MSA call proceeding message;
3, MSC sends to terminal called and sets up message;
4, terminal called MSA feeds back to MSC confirming call message;
5, terminal called MSB sends reminder message to MSC;
6, MSC sends reminder message to calling terminal MSA;
7, terminal called MSB sends connection message to MSC;
8, MSC sends to connect to terminal called MSB and checks message;
Because terminal called MSB enables calling protection function, so after terminal called MSB carrys out electric interface, after sending connection message, MSC needs to carry out connection inspection to this connection message, the identifying code of checking terminal called.
9, terminal called MSB feedback link has checked message to MSC;
Terminal called MSB input validation code, and feed back to MSC, MSC judges identifying code, if correctly, then enters downstream; As mistake, then require that user continues input.Until incoming call time delay returns.
10, MSC sends connection message to calling terminal MSA;
11, calling terminal MSA feeds back " CONNect Acknowledgement " message to MSC;
12, MSC by " CONNect Acknowledgement " message feedback to terminal called MSB.
So far, calling and called both sides successfully establish voice call.
In above-mentioned flow process, MSC needs the user profile obtaining terminal called, to confirm whether terminal called MSB enables calling protection function before setting up message to terminal called MSB transmission.
As shown in Figure 2 b, for complete in the embodiment of the present invention once successfully audio call and receive flow process time, the reciprocal process between MSC, VLR and terminal called MSB is:
1, MSC sends searching user's information message to VLR;
In the message of searching user's information, comprise and need acquisition terminal called MSB whether to start calling protection function;
2, MSC sends access request message to VLR;
3, VLR initiates authentication message to MSC;
4, MSC feeds back VLR authentication response message;
5, VLR sends access request to MSC and accepts message;
6, VLR is sent completely the message of call information to MSC;
What send to MSC at VLR completes in the message of call information, includes the mark whether terminal called MSB opens calling protection function.If terminal called MSB opens calling protection function, MSC needs to mark this function, sends connection message at follow-up terminal called MSB, needs to carry out connection inspection to connection message.After connection has checked, MSC just can continue follow-up signaling process.
7, MSC sends to terminal called MSB and sets up message;
8, terminal called MSB feeds back confirming call message to MSC;
9, terminal called MSB sends reminder message to MSC.
It can thus be appreciated that, in the terminal called user profile only fed back to MSC at VLR, contain the information that terminal called MSB opens calling protection function; MSC is when the connection message that subsequent treatment terminal called MSB sends; just can carry out connection inspection to this message, otherwise, do not check.Directly connection message is sent to calling terminal MSA.
So far, when called unlatching calling protection function, once successfully voice call calling and called signaling process terminates completely.
Compared to existing technology; the present embodiment is by endpoint registration and activate calling protection function; available protecting user can process the right and privacy of oneself sending a telegram here; effectively avoid the situation because user misoperation causes omission incoming call or non-original idea process to be sent a telegram here simultaneously; improve the safety in utilization of mobile terminal, also improve Consumer's Experience effect simultaneously.
As shown in Figure 3, the present invention also proposes a kind of calling protection MSC, comprising: receiver module 301, connection checking module 302, call set up module 303 and sending module 304; Wherein:
Receiver module 301, for receiving the user profile of the terminal called that VLR sends;
Connect checking module 302, for comprise when user profile terminal called open the information of calling protection function time, MSC carries out connection inspection to connection message after receiving the connection message that terminal called sends;
Module 303 is set up in call, for checking and verifying successfully when connection, connection message is fed back to calling terminal, sets up call.
Further, also comprise sending module 300, be connected with receiver module 301, for sending inquiry called message to VLR, this inquiry called message comprises: require whether inquiry terminal called registers the information of incoming call function.
In the present embodiment, in order to protect accordingly incoming call flow process when realizing incoming call, have employed the mode of identifying code.
Particularly, in incoming call flow process, in the inquiry called message that MSC sends to VLR, comprise requirement and inquire about the information whether terminal called registers calling protection function.In the user profile of VLR to MSC loopback terminal called, comprise the state that terminal called MSB starts this calling protection function.
If terminal called enables this function, what then send to terminal called at MSC sets up in message, and require that terminal called is when feedback link message, first MSC checks this link information, need terminal called input validation code, namely carry out connection inspection, when the identifying code of terminal called feedback is correct, connects and check and verify successfully, connection message is fed back to calling terminal by MSC, then call is set up, otherwise the failure of prompting user rs authentication code, re-enter.Until after incoming call time-out, connect and check and verify failure, hang up and return.
As shown in Figure 4, connect checking module 302 and comprise: Tip element 3021 and authentication unit 3022, wherein:
Tip element 3021, for pointing out terminal called feedback validation code;
Authentication unit 3022, when the identifying code for feeding back at terminal called is correct, connects and checking and verifying successfully; Otherwise the failure of prompting user rs authentication code, requires to re-enter, until when incoming call time-out, connect and check and verify failure.
The present embodiment is by endpoint registration and activate calling protection function; when there being incoming call; terminal use needs input validation code; call could be set up; complete the process to incoming call, available protecting user can process right and the privacy of incoming call, effectively avoid because user misoperation causes omitting the situation of incoming call or non-original idea process incoming call simultaneously; improve the safety in utilization of terminal, also improve Consumer's Experience effect simultaneously
As shown in Figure 5, the present invention also proposes a kind of calling protection terminal, comprising: module 504 is set up in function register module 501, function and protecting module 502, connectivity verification module 503 and call, wherein:
Function register module 501, for server registration calling protection function;
Function and protecting module 502, for activating calling protection function, and is updated to VLR by server by active information;
Connectivity verification module 503, in called flow, when receive MSC send set up message after, to described MSC feedback link message, accept the connection inspection of MSC simultaneously;
Module 504 is set up in call, for checking and verifying successfully when connection, sets up the call between calling terminal by MSC.
Further, function and protecting module 502 also for closing calling protection function in predefined conditions, or opens described calling protection function within a predetermined period of time.
Terminal in the present embodiment can be mobile terminal.
Server in the present embodiment can be positioned in HLR (HomeLocationRegister, attaching position register), for being terminal registration, activation, closedown calling protection function.After terminal to server applies for registration of this function of registration, this function register flag bit of server update terminal, records this terminal this function of successful registration.Terminal is under the state of opening at function register flag bit, can apply for activating this function.After server knows this terminal this function registered to HLR inquiry, more New function service marking position, records this terminal this function of successful activation, and is automatically updated in VLR.If terminal to apply closes this function, then server update function service marking position, records this terminal and successfully closes this function, and be automatically updated in VLR.If this function of terminal log-down, then server not accepting terminal exciting/close the application of this function.
In sum, embodiment of the present invention calling protection method, MSC and terminal, after terminal called starts calling protection function, when processing incoming information, MSC needs to carry out connection to the connection message of terminal called transmission and checks and verifies process, namely user's input validation code is needed, when the identifying code only having user to input is correct, could normal process send a telegram here, thus effectively protect right and the privacy that user processes incoming call, effectively avoid the situation because user misoperation causes omission incoming call or non-original idea process to be sent a telegram here simultaneously, improve the safety in utilization of terminal, also improve Consumer's Experience effect simultaneously.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a calling protection method, is characterized in that, comprising:
MSC sends inquiry called message to VLR, and described inquiry called message comprises: require whether inquiry terminal called registers the information of incoming call function;
Information Mobile Service switching center MSC receives the user profile of the terminal called that VLR Visitor Location Register VLR sends;
When described user profile comprises the information of terminal called unlatching calling protection function, after MSC receives the connection message of terminal called transmission, connection inspection is carried out to described connection message, the identifying code of checking terminal called;
When connection is checked and verified successfully, described connection message is fed back to calling terminal by MSC, sets up call.
2. method according to claim 1, is characterized in that, described MSC carries out connecting the step checked to described connection message and comprises:
Point out described terminal called feedback validation code;
When the identifying code that described terminal called feeds back is correct, connects and check and verify successfully; Otherwise the failure of prompting user rs authentication code, requires to re-enter, until when incoming call time-out, connect and check and verify failure.
3. a calling protection MSC, is characterized in that, comprising:
Sending module, for sending inquiry called message to VLR, described inquiry called message comprises: require whether inquiry terminal called registers the information of incoming call function;
Receiver module, for receiving the user profile of the terminal called that VLR sends;
Connect checking module, for comprise when described user profile terminal called open the information of calling protection function time, MSC carries out connection inspection to described connection message after receiving the connection message that terminal called sends;
Module is set up in call, for checking and verifying successfully when connection, described connection message is fed back to calling terminal, sets up call.
4. MSC according to claim 3, is characterized in that, described connection checking module comprises:
Tip element, for pointing out described terminal called feedback validation code;
Authentication unit, when the identifying code for feeding back at described terminal called is correct, connects and checking and verifying successfully; Otherwise the failure of prompting user rs authentication code, requires to re-enter, until when incoming call time-out, connect and check and verify failure.
5. a calling protection terminal, is characterized in that, comprising:
Function register module, for server registration calling protection function;
Function and protecting module, for activating described calling protection function, and is updated to VLR by described server by active information;
Connectivity verification module, in called flow, when receive MSC send set up message after, to described MSC feedback link message, accept the connection inspection of described MSC simultaneously;
Module is set up in call, for checking and verifying successfully when connection, sets up the call between calling terminal by described MSC.
6. terminal according to claim 5, is characterized in that, described function and protecting module is also for closing described calling protection function in predefined conditions.
7. terminal according to claim 5, is characterized in that, described function and protecting module is also for opening described calling protection function within a predetermined period of time.
8. the terminal according to claim 5,6 or 7, is characterized in that, described server is arranged in attaching position register HLR.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110135226.9A CN102202304B (en) | 2011-05-24 | 2011-05-24 | Calling protection method, MSC and terminal |
| PCT/CN2011/078727 WO2012159383A1 (en) | 2011-05-24 | 2011-08-22 | Incoming call protection method, msc and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110135226.9A CN102202304B (en) | 2011-05-24 | 2011-05-24 | Calling protection method, MSC and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102202304A CN102202304A (en) | 2011-09-28 |
| CN102202304B true CN102202304B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110135226.9A Expired - Fee Related CN102202304B (en) | 2011-05-24 | 2011-05-24 | Calling protection method, MSC and terminal |
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| Country | Link |
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| CN (1) | CN102202304B (en) |
| WO (1) | WO2012159383A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306409A (en) * | 2014-05-30 | 2016-02-03 | 展讯通信（上海）有限公司 | Call verification system and method and mobile terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913686A (en) * | 2006-08-23 | 2007-02-14 | 中国移动通信集团公司 | Calling method of mobile terminal |
| CN101035366A (en) * | 2007-04-09 | 2007-09-12 | 中国移动通信集团公司 | Method, system and vision location register for obtaining the communication status of the called terminal |
| US7734919B2 (en) * | 2004-03-24 | 2010-06-08 | Hitachi, Ltd. | Telephone having authentication function and telephone system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6041103A (en) * | 1996-04-16 | 2000-03-21 | Lucent Technologies, Inc. | Interactive call identification |
| CN1282383C (en) * | 2003-10-30 | 2006-10-25 | 英华达（南京）科技有限公司 | Cryptographic method for mobile phone communication |
-
2011
- 2011-05-24 CN CN201110135226.9A patent/CN102202304B/en not_active Expired - Fee Related
- 2011-08-22 WO PCT/CN2011/078727 patent/WO2012159383A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7734919B2 (en) * | 2004-03-24 | 2010-06-08 | Hitachi, Ltd. | Telephone having authentication function and telephone system |
| CN1913686A (en) * | 2006-08-23 | 2007-02-14 | 中国移动通信集团公司 | Calling method of mobile terminal |
| CN101035366A (en) * | 2007-04-09 | 2007-09-12 | 中国移动通信集团公司 | Method, system and vision location register for obtaining the communication status of the called terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102202304A (en) | 2011-09-28 |
| WO2012159383A1 (en) | 2012-11-29 |
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