CN100550939C - A kind of method that in communication system, realizes double ringing service - Google Patents
A kind of method that in communication system, realizes double ringing service Download PDFInfo
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- CN100550939C CN100550939C CNB2005100887016A CN200510088701A CN100550939C CN 100550939 C CN100550939 C CN 100550939C CN B2005100887016 A CNB2005100887016 A CN B2005100887016A CN 200510088701 A CN200510088701 A CN 200510088701A CN 100550939 C CN100550939 C CN 100550939C
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Abstract
The present invention discloses a kind of method that realizes double ringing service in communication system, and may further comprise the steps: the calling subscriber is that called number makes a call with described first number; After the call control apparatus of communication network was received this calling signaling, the called intelligent service information that identifies described first number comprised double ringing service information, with the Service Switching Point of Call Forwarding to intelligent network, and the sign of carrying double ringing service; Described Service Switching Point triggers the service control point of double ringing service to intelligent network; Described service control point find this first number and with the number of its binding, indicate described Service Switching Point to call out the destination Mobile Station International ISDN Number of these two number correspondences simultaneously; The telephone terminal ring simultaneously of described first number and binding number correspondence thereof.After adopting the inventive method, when other users dial arbitrary number in two binding numbers, the telephone terminals rings simultaneously of two binding number correspondences.
Description
Technical field
The present invention relates to the intelligent network field, two numbers that relate in particular to realization binding in digital colony network and the fixed communication network are simultaneously by the method for ring up.
Background technology
Along with the rise of digit cluster communication system, cluster user quantity increases gradually.These users had almost originally had other telephone number, for example fixed telephone number, Mobile Directory Number etc. except colony terminal.Mobile terminal radiating is big, expense is high owing to use, and when landline telephone being arranged on hand, people often prefer communicating with landline telephone.
Simultaneously, the operator of digit cluster communication system had built the network of other types and has had a considerable amount of users before newly-built digit cluster communication system, how multiple network is merged, providing more convenient abundanter service to keep the old user and attract new user, also is the problem that telecom operators pay special attention to.And double ringing service is undoubtedly the breach of one of them network integration.
In the prior art, publication number is two ring implementation methods that the Chinese patent application (name is called " implementation methods of the two rings of two phones just one number ") of CN1571446A discloses a kind of PHS network and fixed network two phones just one number business.The basic network equipment of its dependence must support that multichannel is breathed out simultaneously, and use is the customization application (CAMEL) that mobile network strengthens logic.And for digital colony network, basic network equipment is not supported CAMEL and can not be supported to carry out simultaneously multiway calling, so this invention can only be applicable to the PHS network, the two rings of realization must be adopted new framework and agreement in the trunking communication network.
In addition, only realized among the CN1571446A that other users dial two ring user registration numbers, ring in the time of when being called " major number " does not again solve other users and dials two ring user binding phones, ring problem in the time of when being called " from number " again.
Conversation rate, coverage and the quality of signals of different cluster networks are also inequality, when the user has two cluster telephones, if can be with these two phone bindings, realize two rings when calling out wherein arbitrary number, help not leaking words, also help the service that the user selects to use certain cluster network easily in the relatively poor area of a certain trunking communication network coverage.
Equally,, also can make the user hear the phone that dials into the strange land, avoid Lou words if the phone binding of user's two jack per stations in fixed network can be realized two rings.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method that realizes double ringing service in communication system, makes when other users dial in two telephone numbers of binding any the telephone terminals rings simultaneously of two binding number correspondences.
In order to solve the problems of the technologies described above, the invention provides a kind of method that in communication system, realizes double ringing service, be applied to the communication network that is belonged to by first number of having registered double ringing service and with its binding number and be superimposed upon on the described communication network and record the system that the intelligent network of binding information is formed, this method may further comprise the steps:
(a) calling subscriber is that called number makes a call with described first number;
(b) after the call control apparatus of communication network was received this calling signaling, the called intelligent service information that identifies described first number comprised double ringing service information, with the Service Switching Point of Call Forwarding to intelligent network, and the sign of carrying double ringing service;
(c) described Service Switching Point triggers the service control point of double ringing service to intelligent network;
(d) described service control point find this first number and with the number of its binding, indicate described Service Switching Point to call out the destination Mobile Station International ISDN Number of these two number correspondences simultaneously;
(e) the telephone terminal ring simultaneously of described first number and binding number correspondence thereof.
Further, said method also can have following characteristics: described step (e) also comprises step (f) afterwards, behind any one off-hook in two telephone terminals of described while ring, described Service Switching Point is connected the phone of calling party telephone and this elder generation's off-hook, is discharged into the calling of the corresponding telephone terminal of another number of access failure still.
Further, said method also can have following characteristics: described first number is the cluster telephone number, and with the number of its binding be cluster telephone number or fixed telephone number; Perhaps described first number is a fixed telephone number, and with the number of its binding be cluster telephone number or fixed telephone number.
Further, said method also can have following characteristics: described first number is the cluster telephone number, the user for this number application and registered double ringing service after, in its attaching position register, the called intelligent service information of this number has increased the double ringing service information that comprises Service Control Unit ADDress; Perhaps, described first number is a fixed telephone number, for this number application and after having registered double ringing service, in the switch of its ownership, the called intelligent service information of this number has increased and has comprised the double ringing service information of double ringing service in being identified at the user.
Further, said method also can have following characteristics: described user is for also to apply for and to have registered double ringing service with the number of described first number binding.
Further, said method also can have following characteristics: described first number is the cluster telephone number, and described call control apparatus is a calling mobile exchanging center, and described step (b) is further divided into following steps:
(b1) after described calling mobile exchanging center is received this calling signaling, the information of inquiring about this user to the attaching position register of described first number;
(b2) described attaching position register returns the relevant IN service information of this first number, comprises the address of described service control point and the condition of trigger intelligent business;
(b3) described calling mobile exchanging center is carried out verification by the condition of described trigger intelligent business, after the success Call Forwarding is arrived the described Service Switching Point of intelligent network, and the sign of carrying double ringing service.
Further, said method also can have following characteristics: described first number is a fixed telephone number, described call control apparatus is the switch under described first number, in the described step (b), after this switch judges that described first number registration has double ringing service information, the sign of additional double ringing service is transferred to described Service Switching Point with speech channel on described first number.
Further, said method also can have following characteristics: described step (d) service control point find described first number and with the number of its binding after, analyzing these two numbers earlier is cluster telephone number or fixed telephone number, for the cluster telephone number, earlier inquiring its corresponding roaming number from its attaching position register, is its corresponding destination Mobile Station International ISDN Number with this roaming number.
Further, said method also can have following characteristics: described step (d) service control point find described first number and with the number of its binding after, analyzing these two numbers earlier is cluster telephone number or fixed telephone number, for fixed telephone number, additional prefix is as its corresponding destination Mobile Station International ISDN Number on this fixed telephone number, after called place switch is received this destination Mobile Station International ISDN Number, the prefix that deletion is additional, and then call out this fixed telephone number.
Further, said method also can have following characteristics: described double ringing service sign is to send to prefix additional on described first number of described Service Switching Point.
Further, said method also can have following characteristics: the condition of trigger intelligent business described in the step (b2) is called call attempt authentication, and calling mobile exchanging center described in the step (b3) is finished verification to this condition by following steps:
(b31) described calling mobile exchanging center sends authentication request message to described service control point, trigger intelligent business flow process;
(b32) after described service control point was received described authentication request, inquiring described first number registration had double ringing service information;
(b33) described service control point returns authentication response message, indicates described calling mobile exchanging center call proceeding to be arrived the number of being made up of described double ringing service sign and number one sign indicating number.
As can be seen, double ringing service provides the possibility of selecting call terminal for the end user, also can accomplish not leak words in the area that the trunking communication network coverage is relatively poor, also can avoid using portable terminal to healthy adverse effect.The utilization rate of original fixed network equipment can improve by double ringing service in telecom operators when using new trunking communication network, and can attract more new user and reduce old user's churn rate, for operator brings more benefit.
In addition, the inventive method provides double ringing service only to require the service switching point to have the function of several destination numbers of breathing out simultaneously, so moving exchanging center MSC and fixed switch are exhaled requirement more, do not need to carry out large-scale device upgrade transformation, be beneficial to professional carrying out.
Description of drawings
Fig. 1 is the system group network schematic diagram of embodiment of the invention double ringing service.
The schematic diagram of operation flow when Fig. 2 is first embodiment of the invention calling user dials cluster telephone number.
The schematic diagram of operation flow when Fig. 3 is second embodiment of the invention calling user dials fixed telephone number.
Embodiment
Below in conjunction with accompanying drawing, the double ringing service that is provided by Intellight network mode that the present invention is applied on fixed communication network and/or the trunking communication network describes.By binding of cluster telephone number and fixed telephone number and called number is the cluster telephone number, cluster telephone number and fixed telephone number are bound and be called is fixed telephone number, the number binding of two cluster telephones, and the number binding of two landline telephones totally four kinds of situations be divided into four embodiment.Cluster network in the literary composition can comprise GSM, CDMA, GPRS, CDMA2000, WCDMA, TD-CDMA, TD-SCDMA and PHS or the like communication network.
First embodiment
In the present embodiment, be with cluster telephone number and fixed telephone number binding, and called number is the cluster telephone number.
Fig. 1 is the system group network schematic diagram of present embodiment double ringing service.As shown in the figure, this system comprises fixed communication network, trunking communication network and is superimposed upon intelligent network on these two networks.
Described fixed communication network PSTN comprises a plurality of fixed switch LS, is with a plurality of telephone subscribers on the switch; Described trunking communication network comprises a plurality of cluster telephone users, base station BTS and base station controller BSC, moving exchanging center MSC, visitor location register VLR and attaching position register etc., mutual between moving exchanging center MSC and the attaching position register HLR by No.7 nation-wide Network.The intelligent network that is superimposed upon on fixed communication network and the trunking communication network comprises service switching point (ServiceSwitching Point), Service Control Point, service management point (SMP).Wherein, the service control point (SCP) is divided into signaling interface cell S IU and service control server CP again.Between the SIU of service control point (SCP) and CP and SCP be connected with the TCP/IP network each other with service management point SMP, described signaling interface cell S IU is connected by No.7 nation-wide Network and service switching point and described fixed communication network, trunking communication network.Described service switching point also links to each other with fixed communication network, trunking communication network by No.7 nation-wide Network.
The calling subscriber and the called subscriber that are present in trunking communication network or the fixed communication network can connect communication by the service switching point, and this connects the management control realization of the foundation of communication by service control point (SCP) and service management point SMP.In the present invention, require the service switching point to have the function of several destination numbers of breathing out simultaneously.As can be seen, the present invention has utilized existing communication network and equipment, does not need to carry out large-scale device upgrade transformation, helps professional carrying out.
Use before the double ringing service, need the be engaged in application and of advanced industry the binding of subscriber directory number.
Professional application, the user can arrive the operator business hall or open double ringing service by the application process application of phone, increases the business information of pair rings in the IN service CAMEL-Subscription-Information of or two numbers some this user.
For example: the user applies double ringing service, registration be cluster telephone number A:52871111.To increase double ringing service information in the called intelligent service information of registration back this number in HLR, and comprise SCP address etc., MSC can trigger double ringing service according to signatory double ringing service information.
The user can arrive the operator business hall or bind or revise another telephone number B by dialing the number A that registers when the double ringing service management process is applied for double ringing service for it, what bind together can be a cluster telephone number and a fixed telephone number, also can be two fixed telephone numbers or two cluster telephone numbers.
If the user is binding and the modification of finishing telephone number by the double ringing service management process, then the user needs to enter the double ringing service management process, after this under the control of SCP by dialing the access code of double ringing service management process, according to voice suggestion, finish the binding or the modification of number.
If the user finishes the binding and the modification of phone by the operator business hall or by the Internet, then shop assistant or user must require fill in relevant information according to the interface, by the control of SMP, finish the binding or the modification of checking numbers.
Through above-mentioned two steps, user A has promptly finished the application of double ringing service and the binding of checking numbers.In the present embodiment, suppose the user with cluster telephone number A and another fixed line number B binding, the double ringing service of among the SCP user of recording phone number A having been contracted, and store the number A and the B of two bindings.
In the present embodiment, in order to realize dialing the function that arbitrary binding number can both be realized two rings, the user also will open double ringing service for its another number B application, will be increased in the called intelligent service information of this number in interior double ringing service information comprising SSP prefix etc. on the switch of B place.Like this, calling number A or number B can realize corresponding phone A and two rings of phone B.
When Fig. 2 showed cluster telephone number A (52871111) with fixed telephone number B (55872222) binding, the operation flow of calling user dials cluster telephone number A (52871111) in the double ringing service may further comprise the steps:
Step 1, another user C calls out 52871111, promptly during number A, calls out and delivers to caller MSC; Though user C is expressed as the mobile subscriber among the figure, also can be the fixed network user, its caller this moment MSC is gateway MSC (GMSC);
Step 2, caller MSC is to the information of the attaching position register HLR of A inquiry A;
Step 3, HLR returns the IN service information of A, comprises the address of IN service SCP and the condition of trigger intelligent business, and called call attempt authentication is the condition of a trigger intelligent business;
Step 4, caller MSC sends authentication request message to SCP, trigger intelligent business flow process according to the address of IN service SCP;
Step 5, after SCP receives the authentication request message of MSC, inquire in the register information of A double ringing service is arranged, then send authentication response message to MSC, indication MSC arrives prefix M+ called number with call proceeding in the response message, prefix M is that system is the sign that double ringing service is set, and is assumed to 998, then in this example SCP with the instruct MS C number 99852871111 that continues;
Step 6, caller MSC is routed to SSP according to prefix 998 with speech channel;
Step 7, SSP receives that the destination Mobile Station International ISDN Number prefix is 998 calling, triggers the double ringing service flow process to SCP according to this prefix;
Step 8, it is fixed telephone number B (55872222) that SCP inquires another number of binding with number A (52871111), it is the cluster telephone number that SCP analyzes A, inquires about its corresponding roaming number A ' to the attaching position register HLR of A earlier;
Step 9, HLR returns roaming number A ';
Step 11, SSP calls out A ' and 999+B simultaneously, and the fixed network switch LS at B place removes 999 backs and calls out 55872222, and the effect of prefix N is that expression calling this time is two bell calls that SSP initiates, if there is not prefix N, LS can be triggered to the double ringing service of SSP once more;
Step 12, the terminal (cluster telephone A) of elder generation's off-hook number A correspondence when supposing user answer, the terminal C of SSP connecting subscribers participating C and cluster telephone A;
Step 13, SSP discharges the calling to the corresponding landline telephone B of number B of access failure still.
After this in terminal A and C communication process, terminal B still can breathe out as the plain old telephone incoming call.
For the cluster telephone number, the triggering of double ringing service takes place on the MSC of caller place.If what use is the CAMEL agreement of GSM, then according to the CAMEL agreement, called MS C can the trigger intelligent business flow process.If what use is the WIN agreement of CDMA, then on called MS C, can not trigger the trigger of " called call attempt authentication ", so can not taking place, do not trigger secondary.
Second embodiment
In the present embodiment, be with cluster telephone number and fixed telephone number binding, and called number is a fixed telephone number.The double ringing service system of present embodiment and configuration thereof are all identical with first embodiment, repeat no more.
When Fig. 3 was cluster telephone number A (52871111) with fixed telephone number B (55872222) binding, the operation flow in the double ringing service during calling user dials fixed telephone number B may further comprise the steps:
Step 1 when another user C calls out 55872222, promptly during number B, is called out the fixed network switch LS that delivers to the B place;
Step 2, LS analyzes the attribute of B, judges it and has registered IN service, and then prefixing M before called number is transferred to SSP with speech channel, supposes that still prefix M is 998, then the LS number 99852872222 to SSP that continues;
Step 3, SSP receives that the destination Mobile Station International ISDN Number prefix is 998 calling, triggers the double ringing service flow process to SCP according to this prefix;
Step 4, SCP inquires fixed telephone number B and another telephone number A (52871111) binding, and it is the cluster telephone number that SCP analyzes A, inquires about the roaming number of A correspondence earlier to the attaching position register HLR of A;
Step 5, HLR returns roaming number A ';
Step 6, SCP indication SSP 2 destination Mobile Station International ISDN Number that continue simultaneously, promptly roaming number A and the number that is combined into by prefix N+B suppose that still prefix N is 999, then one of them destination Mobile Station International ISDN Number is 99955872222;
Step 7, SSP calls out A ' and 999+B simultaneously, and the fixed network switch LS at B place removes 999 backs and calls out 55872222, can not trigger by secondary;
Step 8, elder generation's off-hook landline telephone B when supposing user answer, then SSP connects terminal C and B;
Step 9, SSP is discharged into the calling of the cluster telephone A of access failure still.
After this in terminal B and C communication process, terminal A still can breathe out as the plain old telephone incoming call.
The 3rd embodiment
In the present embodiment, be with cluster telephone number and cluster telephone number binding, called number is one of them cluster telephone number.The double ringing service system of present embodiment and configuration thereof all can be referring to first embodiment, and difference only is to apply for and what bind is two cluster telephone numbers, does not repeat them here.
Suppose cluster telephone number A (52871111) and cluster telephone number D (52873333) binding, one of them cluster telephone number A (52871111) of calling user dials in the double ringing service, its operation flow may further comprise the steps:
Step 1 is identical with first embodiment to step 7, no longer repeats;
Step 8, SCP inquires cluster telephone number A (52871111) and another cluster telephone number D (52873333) binding, and analyzing A and D is the cluster telephone number, inquires about the roaming number of A and D correspondence respectively to the attaching position register HLR of A and D;
Step 9, HLR returns the roaming number A ' and the D ' of A and D correspondence;
Step 11, SSP calls out A ' and D ' simultaneously;
Step 12, elder generation's off-hook cluster telephone A when supposing user answer, then SSP connects terminal C and A;
Step 13, SSP be discharged into access failure still number D the calling of corresponding cluster telephone D.
The 4th embodiment
In the present embodiment, be that called is one of them fixed telephone number with fixed telephone number and fixed telephone number binding.The double ringing service system of present embodiment and configuration thereof all can be referring to first embodiment, and difference only is to apply for and what bind is two fixed telephone numbers, does not repeat them here.
Suppose fixed telephone number B (55872222) binding fixed telephone number E (55874444), calling user dials number B (55872222) in the double ringing service, its operation flow may further comprise the steps:
Step 1 when another user C calls out 55872222, promptly during number B, is called out the fixed network switch LS that delivers under the B;
Step 2, LS analyzes the attribute of B, judges it and has registered IN service, then behind the prefixing M, speech channel is transferred to SSP before called number.Suppose that prefix M is 998, then LS continues number 99852872222 to SSP in this example;
Step 3, SSP receives that the destination Mobile Station International ISDN Number prefix is 998 calling, triggers the double ringing service flow process to SCP according to prefix;
Step 4, SCP inquires fixed telephone number B (55872222) and another fixed telephone number E (55874444) binding, indication SSP two destination Mobile Station International ISDN Number that continue simultaneously, be prefix N+B and prefix N+E, suppose that prefix 2 is 999, then these two destination Mobile Station International ISDN Number are 99955872222 and 99955874444;
Step 5, SSP calls out 999+B and 999+E simultaneously, and the fixed network switch LS under B and the E can remove 999 back callings 55872222 or 55874444 respectively and can not trigger by secondary;
Step 6, elder generation's off-hook landline telephone B when supposing user answer, then SSP connects terminal C and B;
Step 7, SSP is discharged into the calling of the landline telephone E of access failure still.
In the above embodiments, when breathing out, the telephone terminal of binding number correspondence can be distinguished separately and uses by normal condition.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, technical scheme of the present invention is made amendment or is equal to replacement, and do not break away from the spirit and scope of this religious name technical scheme, all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1, a kind of method that in communication system, realizes double ringing service, be applied to the communication network that is belonged to by first number of having registered double ringing service and with its binding number and be superimposed upon on the described communication network and record the system that the intelligent network of binding information is formed, for also applying for and registered double ringing service with the number of described first number binding, wherein, described first number is the cluster telephone number, and with the number of its binding be cluster telephone number or fixed telephone number; Perhaps described first number is a fixed telephone number, and with the number of its binding be cluster telephone number or fixed telephone number, this method may further comprise the steps:
(a) calling subscriber is that called number makes a call with described first number;
(b) after the call control apparatus of communication network was received this calling signaling, the called intelligent service information that identifies described number comprised double ringing service information, with the Service Switching Point of Call Forwarding to intelligent network, and the sign of carrying double ringing service;
(c) described Service Switching Point triggers the service control point of double ringing service to intelligent network;
(d) described service control point find this first number and with the number of its binding, indicate described Service Switching Point to call out the destination Mobile Station International ISDN Number of these two number correspondences simultaneously;
(e) the telephone terminal ring simultaneously of described first number and binding number correspondence thereof.
2, the method for claim 1, it is characterized in that, described step (e) also comprises step (f) afterwards, behind any one off-hook in two telephone terminals of described while ring, described Service Switching Point is connected the phone of calling party telephone and this elder generation's off-hook, is discharged into the calling of the corresponding telephone terminal of another number of access failure still.
3, the method for claim 1, it is characterized in that, described first number is the cluster telephone number, the user for this number application and registered double ringing service after, in its attaching position register, the called intelligent service information of this number has increased the double ringing service information that comprises Service Control Unit ADDress; Perhaps, described first number is a fixed telephone number, for this number application and after having registered double ringing service, in the switch of its ownership, the called intelligent service information of this number has increased and has comprised the double ringing service information of double ringing service in being identified at the user.
As claim 1 or 3 described methods, it is characterized in that 4, described first number is the cluster telephone number, described call control apparatus is a calling mobile exchanging center, and described step (b) is further divided into following steps:
(b1) after described calling mobile exchanging center is received this calling signaling, the information of inquiring about this user to the attaching position register of described first number;
(b2) described attaching position register returns the relevant IN service information of this first number, comprises the address of described service control point and the condition of trigger intelligent business;
(b3) described calling mobile exchanging center is carried out verification by the condition of described trigger intelligent business, after the success Call Forwarding is arrived the described Service Switching Point of intelligent network, and the sign of carrying double ringing service.
5, as claim 1 or 3 described methods, it is characterized in that, described first number is a fixed telephone number, described call control apparatus is the switch under described first number, in the described step (b), after this switch judged that described first number registration has double ringing service information, the sign of additional double ringing service was transferred to described Service Switching Point with speech channel on described first number.
6, the method for claim 1, it is characterized in that, described step (d) service control point find described first number and with the number of its binding after, analyzing these two numbers earlier is cluster telephone number or fixed telephone number, for the cluster telephone number, earlier inquiring its corresponding roaming number from its attaching position register, is its corresponding destination Mobile Station International ISDN Number with this roaming number.
7, as claim 1 or 6 described methods, it is characterized in that, described step (d) service control point find described first number and with the number of its binding after, analyzing these two numbers earlier is cluster telephone number or fixed telephone number, for fixed telephone number, additional prefix is as its corresponding destination Mobile Station International ISDN Number, after called place switch is received this destination Mobile Station International ISDN Number on this fixed telephone number, the prefix that deletion is additional, and then call out this fixed telephone number.
8, the method for claim 1 is characterized in that, described double ringing service sign is to send to prefix additional on described first number of described Service Switching Point.
9, method as claimed in claim 4 is characterized in that, the condition of trigger intelligent business described in the step (b2) is called call attempt authentication, and calling mobile exchanging center described in the step (b3) is finished verification to this condition by following steps:
(b31) described calling mobile exchanging center sends authentication request message to described service control point, trigger intelligent business flow process;
(b32) after described service control point was received described authentication request, inquiring described first number registration had double ringing service information;
(b33) described service control point returns authentication response message, indicates described calling mobile exchanging center call proceeding to be arrived the number of being made up of described double ringing service sign and number one sign indicating number.
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| CNB2005100887016A CN100550939C (en) | 2005-07-29 | 2005-07-29 | A kind of method that in communication system, realizes double ringing service |
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| CNB2005100887016A CN100550939C (en) | 2005-07-29 | 2005-07-29 | A kind of method that in communication system, realizes double ringing service |
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| CN1905594A CN1905594A (en) | 2007-01-31 |
| CN100550939C true CN100550939C (en) | 2009-10-14 |
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| CN101291469B (en) * | 2008-06-02 | 2011-06-29 | 中国联合网络通信集团有限公司 | Implementing method for voice called service and calling service |
| CN101547420B (en) * | 2009-05-14 | 2010-10-27 | 候万春 | System and method for implementing number switching inform by intelligent network mode |
| CN103841544B (en) * | 2012-11-23 | 2017-12-26 | 中国电信股份有限公司 | Realize the System and method for of same type mobile network's intercommunication |
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