WO2008086686A1

WO2008086686A1 - Call transferring association method

Info

Publication number: WO2008086686A1
Application number: PCT/CN2007/003532
Authority: WO
Inventors: Wei Ma
Original assignee: Zte Corporation
Priority date: 2007-01-05
Filing date: 2007-12-11
Publication date: 2008-07-24
Also published as: JP5179512B2; KR20090112668A; CN101217774A; KR101357919B1; JP2010515386A; CN101217774B

Abstract

A call transferring association method is disclosed in the present invention, which includes: in the first step, a terminal receives a command inputting by the terminal user, for changing call transferring state for a waiting user; in the second step, the terminal transmits a call transferring function message to the HLR that the waiting user belongs to so as to change the call transferring state; in the third step, the terminal checks information of the other users therein; and in the fourth step, once other users existing, the terminal determines whether transmitting a call transferring function message to the HLRs of the other users so asto change the call transferring state according to call transferring association strategy of the terminal and the call transferring information state of the other users. With the present invention, the following beneficial effect would be realized: without changing the protocol of the network side and setting of the HLR, independence between the call transferring association of different mode users (or different users in the same mode) in dual/multi mode terminal and holding different user call transferring setting could be achieved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of call forwarding in the field of mobile communications, and more particularly to a call forwarding association method for implementing a call transfer association for a dual mode/multimode terminal. BACKGROUND With the development of the third generation mobile communication technology, third generation mobile technologies such as TD-SCDMA. CDMA (Code Division Multiple Access) and WCDMA (Wireless CDMA) have gradually entered a practical stage. However, due to the inevitable problems of network coverage at the beginning of the third generation of mobile technology, there is a need to support second generation mobile communication technologies on the third generation communication terminals. At the same time, with the development of technologies such as wireless local area networks, terminals are required to simultaneously support two or more modes of communication technologies. Dual-mode and multi-mode terminals have recently been produced by many equipment vendors and are also used by some operators. The call forwarding function can transfer an incoming call to a terminal to a designated mobile terminal or a fixed network communication device. The implementation of the mobile transfer function provides a feasible processing method for the mobile terminal user to conveniently use the mobile terminal to answer the incoming call or unable to answer the incoming call. At present, the use of the call forwarding technology of the mobile network has become very popular and mature. There are four main types of call forwarding functions: unconditional call forwarding, busy call forwarding, call forwarding when unreachable, and call forwarding without answering; these four call forwarding functions meet the different needs of end users. The terminal's operations for call forwarding mainly include: registration, activation, deactivation, deletion, and query. These five operations provide the ability for user 4 to tamper with and query the user's call forwarding function. With the gradual use and popularity of multimode and dual mode terminals, some new requirements for call forwarding functions have been proposed. For example, the dual-mode terminal user activates the call forwarding function in a certain mode, and the call forwarding function can also be activated when the user dials the user in another mode of the terminal. However, in the current different modes, the implementation of the association between the call forwarding of the user is implemented by interworking with the HLR (Home Location Register) of different users (networks). In this way, not only the interface protocol on the network side needs to be modified, but also the call forwarding settings of the interworking users are completely consistent. It is not possible to maintain their settings independently of each other under the condition of interworking. End users cannot be targeted at different The user sets different call forwarding information. Therefore, there is a need for a technical solution that enables users in different modes (or different users in the same mode) in a multimode terminal to be associated with each other but can keep the call forwarding settings of different users independent of each other. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is a primary object of the present invention to provide a call forwarding association method for implementing call forwarding association of a dual mode/multimode terminal. According to an embodiment of the present invention, a call transfer association method is provided. First of all, it should be noted that the user referred to in the present invention refers to information registered in the mobile network, corresponding to a mobile number, identified by a user identifier, and different from the user of the terminal. A terminal used by a physical person can have multiple different user IDs at the same time. The terminal ^: user refers to the physical person who uses the mobile terminal. The call forwarding association method according to the present invention includes the following steps: In a first step, the terminal receives a command input by the terminal user for changing a call forwarding state for the standby user; and a second step, the terminal sends the home location register to which the standby user belongs a call forwarding function message to change a call forwarding state; a third step, the terminal checks information of other users in the terminal; and a fourth step, when there are other users and the call forwarding function status meets the call forwarding association policy requirement, the terminal The home location register to which the other user belongs sends the call forwarding function message to change the call forwarding state. In the first step, the command to change the call forwarding state includes: a registration command, an activation command, a deactivation command, an erasure command. In the second step, the call forwarding function message sent by the terminal includes: a call forwarding registration message, a call Transfer activation message, call forwarding deactivation message, call forwarding eviction message. Call Association Policy 1: The operations of the third step and the fourth step are to associate only when the first step is to initiate the call forwarding function operation, and require that the call forwarding association operation be performed only when the current state of the other users is not the active state. The following describes the method of call forwarding association in the call association policy. For the call forwarding association method of policy 1, when the call forwarding function needs to be activated: In the first step, the terminal receives a command input by the terminal user for starting the call forwarding function for the standby user; in the second step, the terminal goes to standby The home location register to which the user belongs sends a call forwarding function registration message to activate the call forwarding function; in the third step, the terminal checks information of other users in the terminal; in the fourth step, there are other users and the same call forwarding function is not In the case of startup, a call forwarding function message is sent to the home location register to which the other user belongs to initiate the call forwarding state. Therefore, in order to implement call forwarding association for other users who are simultaneously on standby, the following operations are performed: In the first step, the terminal receives a command input by the terminal user for starting a certain call forwarding function for the standby user; in the second step, The terminal sends a call forwarding registration message to the home location register to which the standby user belongs to activate the call forwarding function. In the third step, the terminal queries other user information to determine whether there are other users in the standby state; Go to the following steps: Step A: Query the current status of the same call forwarding function of each of the other standby users by using the standby user's own network; and, in step A, determine that the state of the call forwarding function is inactive, In the fourth step, the call forwarding registration message of the standby user is set according to the call forwarding registration message in the second step, and the registration message is sent to the home location registers of these other users to activate the call forwarding function. When the call forwarding association needs to be implemented in the case of automatically switching to the network of the unstandby user, the following operations are performed: In the first step, the terminal receives a command input by the terminal user for starting a certain call forwarding function for the standby user; In the second step, the terminal sends a call transfer registration message to the home location register to which the standby user belongs to activate the call forwarding function. In the third step, the terminal queries information of other users in the terminal to determine whether other users exist; Go to the following steps, Step A: In the case that there are other users, switch to the network corresponding to other users in a predetermined order, switch the standby state of other users; and Step B: Query each other's own network to query each other The current state of the same call forwarding function of the user; in the case where it is judged in step B that the state of the call forwarding function is the inactive state, in the fourth step, the other user is set according to the call forwarding registration message in the second step. Call forwarding registration message, concurrent The message to the other user's home location register, to initiate call forwarding. In order to prevent the call of the standby network at the time after the call forwarding function is activated, the terminal may save the current call forwarding information, so as to perform corresponding call transfer processing when the user automatically switches other network users manually or for other reasons. In this way, after the second step, it is checked whether there is currently call forwarding information saved, and in the case where the call forwarding information is saved, the previously saved call forwarding information is deleted, and the current call forwarding is saved without the call forwarding information being saved. Information, and no longer perform the third and fourth steps. In addition, when the user switches the network manually or for other reasons, the following operations are performed to implement the call forwarding association of the non-standby user: Step A: The terminal switches to the new unstandby user for standby; Step B: Query whether the terminal stores the call transfer Setting information, and in the case of having call forwarding setting information, proceeding to the following steps: Step C: querying the state of the call forwarding function of the new standby user in the stored call forwarding setting information by using the current new standby user's network; Step D: In the case that the state of the call forwarding function inquired in step C is inactive, the call forwarding function of the current user is set according to the stored call forwarding setting information, and the call forwarding registration message is sent to the attribution to which the current user belongs. A location register to initiate the call forwarding feature. In addition, for each of the above-described processes of the policy one, when the call forwarding state is queried to be in an active state, no operation is performed, and the related processing is ended. At the same time, when the call change status command is input to the standby user, the call forwarding function of the current user is operated, and the other users are no longer processed. Through the above technical solutions, the present invention achieves the following beneficial effects: Users in different modes in dual mode/multimode terminals (or different users in the same mode) are implemented without modifying the protocol and HLR settings on the network side. Call forwarding is interrelated and keeps the call forwarding settings of different users independent of each other. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a flowchart of a call transfer association method according to an embodiment of the present invention; FIG. 2 is a flowchart of a call transfer association method according to a first embodiment of the present invention; 3 is a flowchart of a call transfer association method according to a second embodiment of the present invention; FIG. 4 is a flowchart of a call transfer association method according to a third embodiment of the present invention; FIG. 5 is a call according to a fourth embodiment of the present invention. FIG. 6 is a flowchart of a call transfer association method according to a fifth embodiment of the present invention; FIG. 7 is a flowchart of a call transfer association method according to a sixth embodiment of the present invention; A flowchart of a call forwarding association method of a seventh embodiment of the invention; and FIG. 9 is a flowchart of a call forwarding association method according to an eighth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. First of all, it should be noted that the user referred to in the present invention refers to information registered in the mobile network, corresponding to a mobile number, identified by a user identifier, and different from the user of the terminal. A terminal used by a physical person can have multiple different/identical user IDs at the same time. The terminal user refers to the physical person who uses the mobile terminal. The main inventive idea of the present invention is: when a certain user initiates a certain change call forwarding state for the user in a standby situation, after the terminal sends a message for changing the call forwarding function to the HLR to which the user belongs, the terminal detects the terminal. Information of other users in the user; if there are other users, the network of other users is used to request the status information of the call forwarding from the HLR to which they belong, and according to the current call forwarding status and the call forwarding association policy, whether to follow the previous user settings The call forwarding settings send messages that change the state of the call forwarding function to the home location registers of these users. As shown in FIG. 1 , the call forwarding association method provided by the embodiment of the present invention includes the following steps: Step S102: The terminal receives a command sent by a terminal user to change a call forwarding state for a standby user; Step S104, the terminal belongs to a standby user. The home location register sends a call forwarding function message to change the call forwarding state; step S106, the terminal checks information of other users in the terminal; and step S108, if there are other users and the call forwarding function status meets the conditions of the call forwarding association policy setting The terminal sends a call forwarding function message to the home location register to which the other user belongs to change the call forwarding state. The command to change the call forwarding state includes: a registration command, an activation command, a deactivation command, and an erasure command. In step S104, the call forwarding function message sent by the terminal includes: a call forwarding registration message, a call transfer. Activation message, call forwarding deactivation message, call forwarding erasure message. In order to achieve complete consistency of call forwarding settings for different users in the same dual mode/multimode terminal, in step S108, the terminal transmits the same call forwarding function message as in step S104 to implement the same call forwarding function operation. In order to realize different call forwarding association level settings of the dual mode/multimode terminal, whether to perform the operations of step S106 and step S108 is performed according to different call forwarding association requirements at the end of step S104. The call forwarding association requirements herein may include associating only one or several of the operations that change the call forwarding status. In order to implement different call forwarding association level settings of the dual mode/multimode terminal, in step S106, whether to query the current call forwarding status of the associated user according to different call forwarding association requirements, and according to the call transfer in step S108 The associated requirements are used to determine whether to perform the same operation of changing the call forwarding state for the associated user. The call forwarding association requirement here includes sending change call forwarding status information only if the same call forwarding function status of other users is not in the target state (the state to which the HLR should migrate after receiving the call forwarding information) or a certain state is set. Or directly change the call forwarding status information without making the current call forwarding status query of the associated user. Hereinafter, the process of implementing the call transfer association method of the present invention will be described in conjunction with specific embodiments. The first embodiment is first described in the case of a multi-mode multi-standby terminal, in accordance with Strategy 1 above, the processing of the technical solution of the present invention is implemented for other users who are simultaneously on standby. As shown in FIG. 2, the method includes the following steps: Step S202: The terminal receives a command input by the terminal user for starting a call transfer state for the standby user; Step S204: The terminal sends a call transfer registration message to the home location register to which the standby user belongs, to Initiating the call forwarding state; Step S206: The terminal queries other user information to determine whether there is a user in the standby state; Step S208: Query the current state of the call forwarding function of each standby user by using the standby user's own network; If it is determined in S208 that the state of the call forwarding function is inactive, the process proceeds to step S210: the terminal follows the The call forwarding registration message in step S204 is set to set the call forwarding registration message of the standby user, and a call forwarding function message is sent to the home location register to which the standby user belongs to activate the call forwarding function. Further, when it is determined in step S208 that the call forwarding state is the active state, the processing is terminated. In the case of the same call association policy of the first embodiment, the second embodiment automatically switches the network to the network to which the users belong according to the operations in the embodiment, and causes the users to Call forwarding processing is performed after registration in the network. As shown in FIG. 3, the processing in this embodiment includes the following steps: Step S302: The terminal receives a command input by the terminal user for starting a call forwarding state for the standby user; Step S304: The terminal sends the home location register to which the standby user belongs Calling the registration message to start the call forwarding state; Step S306: The terminal queries other user information therein; Step S308: In the case that there are other users, respectively switch to the network corresponding to other users in a predetermined order, and switch the standby of other users a state; step S310: querying the current state of the call forwarding function of each other user by using another user's own network respectively; Step S312: The terminal sets the call forwarding registration message of the standby user according to the call forwarding registration message in step S304, and The home location register to which the standby user belongs sends a call forwarding function message to initiate the call forwarding function. Further, when it is determined in step S310 that the call forwarding state is the active state, the processing is terminated. The third embodiment performs the operations in this embodiment when the terminal user activates the call forwarding function of the current standby user. Its call association strategy is the same as the first embodiment. As shown in FIG. 4, the following processing is performed: Step S402: The terminal receives a command input by the terminal user for starting a call forwarding function for a standby user; Step S402: The terminal sends a call transfer registration to the HLR to which the standby user belongs. a message to activate the call forwarding function; Step S406: Query whether there is currently call forwarding information saved; Step S408, in the case where it is determined in step S406 that the call forwarding information is saved, deleting the previously saved call forwarding information; Step S410: Saving the current Call forwarding information. In addition, when it is determined in step S406 that the call forwarding information is not saved, the process proceeds directly to step S410. Fourth Embodiment When the terminal switches the standby user, call forwarding processing is performed in accordance with the operation shown in Fig. 5, and the call association policy is the same as that of the first embodiment. As shown in FIG. 5: Step S502: The terminal switches to a new unstandby user for standby; Step S504: Query whether the terminal stores call forwarding setting information, and if there is call forwarding setting information, proceed to the following steps: S506: Query, by the network of the current new standby user, the status of the call forwarding function of the new standby user in the stored call forwarding setting information. Step S508: The status of the call forwarding function queried in step S506 is an inactive state. Next, the call forwarding function of the current user is set according to the stored call forwarding setting information, and the call forwarding registration message is sent to the home location register to which the current user belongs to activate the call forwarding function. In addition, in a case where the state queried in step S506 is the active state, the operation is ended. In addition, in the case of certain terminal requirements, it is necessary to maintain the same call forwarding settings of different mode users of the same terminal (which can also be different users of the same mode). In order to achieve such a function, the call forwarding association method provided by the embodiment of the present invention can be further simplified and modified to achieve complete consistency of call forwarding settings of different users of the same dual mode or multimode terminal. When a certain user is in standby, any related operation (registration, activation, deactivation, erasure, etc.) that can be changed for the user's call transfer status is sent to the terminal, and the relevant call transfer message is sent (registration, Activate, deactivate, erase, etc.) to the HLR to which the user belongs; the terminal detects information of other users in the terminal; if there are other users, the same operation is performed on the call forwarding function of the user according to the call forwarding setting set by the previous user , send the same information to the user's HLR. The following fifth, sixth, seventh, and eighth embodiments are methods for implementing a call forwarding association operation in the case where the call forwarding settings of different users of the same terminal described above are completely identical. The fifth embodiment is directed to the multi-mode and multi-standby terminal, and the operation of the call forwarding association method of the present invention is implemented as shown in FIG. 6 for other users who are simultaneously on standby, and includes the following processing: Step S602: The terminal receives the user input for a certain The standby user changes a certain command of the call forwarding function state; Step S604: The terminal sends a corresponding message to the HLR to which the user belongs to change the state of the call forwarding function, and changes the state of the call forwarding; Step S606: Check Querying the user information in the current state of the terminal, and determining whether the other user is in the standby state in the terminal; Step S608: If it is determined in step S606 that another user is in the standby state, according to the setting information of the user call forwarding in step S602 The call forwarding function of the current user is set, and the same message as that of step S604 is sent to the HLR to which they belong, changing the state of calling the transfer function. In addition, when it is determined in step S606 that no other user is in the standby state, the processing is ended. Sixth embodiment

The network automatically switches to the network to which these users belong, and uses these users to register for call forwarding processing. As shown in FIG. 7, the following processing is included: Step S702: The terminal receives a certain command input by the user for changing a certain call forwarding function status for a certain standby user; Step S704: The terminal sends the change to the HLR to which the user belongs. a corresponding message of the call forwarding function state, changing the state of the call forwarding; Step S706: Querying whether the terminal has other information of the non-standby user; Step S708: If it is determined in step S706 that there are other information of the non-standby user, respectively Switching to the network corresponding to the users in a certain order, switching the standby state of the users; Step S710: setting the call forwarding function of the current user according to the setting information of the user call forwarding in step S702, and sending the same message as step S704 to The HLRs to which they belong, change the state of calling this transfer function. In addition, when it is determined in step S706 that there is no other information of the unstandby user, the processing is terminated. In the seventh embodiment, in order to ensure that the terminal does not affect the call of the standby network at the time after the call forwarding function is activated, the current call forwarding information may be saved in the terminal, and when the user automatically switches other network users by manual or other reasons, the call forwarding is performed. deal with. As shown in FIG. 8, the following processing is included: Step S802: The terminal receives a certain command input by the user for changing a certain call forwarding function state for a certain standby user; Step S804: The terminal sends the change to the HLR to which the user belongs. a corresponding message of the call forwarding function state, changing the state of the call forwarding; step S806: querying whether there is currently call forwarding information saved; step S808: determining to save the call in step S806 In the case of transferring information, the previously saved call forwarding information is deleted; and step S810: saving the current call forwarding information. In the case where it is determined in step S806 that the call forwarding information is not saved, the process proceeds directly to step S810. In the eighth embodiment, when the terminal switches the network standby user, the process shown in FIG. 9 is performed: Step S902: The terminal switches to a new unstandby user to perform standby; Step S904: Query the call forwarding setting information stored by the terminal; Step S906 When the result of the determination in step S904 is YES, the call forwarding function of the current user is set according to the saved call forwarding information, and the same call forwarding message is transmitted to the HLR to which they belong, and the state of the call forwarding function is changed. The various processes described above are further described below in conjunction with specific examples. Example 1 In a dual-card slot GSM/TD-SCDMA dual-mode terminal, a GSM SIM card and a TD-SCDMA USIM card are respectively inserted; the MSISDN numbers of the two cards are 139******** and 188 The current terminal is in GSM/TD dual standby mode, and the service setting call number of the busy call forwarding is started for the user 1 with the number 139******** is 138******* *, the terminal will send a message to register and activate the call forwarding service to the HLR to which the user 1 belongs. At the same time, the terminal sends a call forwarding status inquiry message to the HLR of the user 2 whose number is 188********, and obtains the status of the current call forwarding service. It is found that the busy call forwarding of the 188**** ** user at this time is not activated, and the terminal sends the registration and activation information to the HLR through the 188* **** network at this time, and starts the busy call forwarding service of the user 2. When another terminal user calls the user whose number is 188********, the system finds that the user is in a call at this time, and the system starts the call forwarding service, and the call is transferred. Received on the terminal where the user's MSISDN number is 138********. At this time, the dual-mode (multi-mode) terminal call forwarding service is implemented in different modes. Example 2 For the dual-mode terminal in the first embodiment, the user of the ten pairs of the number 188******** initiates the setting of the busy call and the service, and sets the call forwarding number to ₁₃₇ ****. ****. When jJt, the terminal sends a message for registering and activating the call forwarding service to the HLR to which the user 2 belongs. At the same time, the terminal will The HLR of the user 1 whose number is 139******** sends a call forwarding status inquiry message to obtain the status of the current call forwarding service. It is found that the busy call of the 139******** user at this time is transferred to the active state, and the terminal is not performing other operations to continue the standby state. At this time, when the user 1 number 139******** is talking, the other terminal calls the user 1. When the system finds that at the time of 139******** the user is in a call, the system starts the call forwarding service and transfers the call to the terminal whose MSISDN number is 138********. At this time, when the user 2 number 188******** is on a call, the other terminal calls the user 2. When the system finds i3⁄4, the user is in a call, and the jJt system starts the call forwarding service and transfers the call to the terminal whose MSISDN number is 137********. At this time, the functions of the Han model (multi-mode) terminal call transfer service are related to each other in different modes, and can be operated independently. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A call forwarding association method for a mode/multimode terminal to implement a call transfer association, the feature comprising the following steps:

In the first step, the terminal receives a command input by the terminal user to change the call transfer status for the standby user;

a second step, the terminal sends a call forwarding function message to the home location register to which the standby user belongs, to change the call forwarding state;

a third step, the terminal checks information of other users in the terminal; and a fourth step, when the other user exists and the call forwarding function status meets the call forwarding association policy requirement, the terminal belongs to the home location register to which the other user belongs The call forwarding function message is sent to change the call forwarding status.

2. The call forwarding association method according to claim 1, wherein in the first step, the command to change a call forwarding state comprises: a registration command, an activation command, a deactivation command, an erasure command, In the second step, the call forwarding function message sent by the terminal includes: a call transfer registration message, a call transfer activation message, a call transfer deactivation message, and a call transfer erasure message.

3. The call forwarding association method according to claim 2, wherein in the fourth step, the terminal transmits the same call forwarding function message as in the second step to implement the same call forwarding function operation. Thus, the call forwarding settings of different users in the same dual-mode/multi-mode terminal are completely identical.

The call forwarding association method according to claim 2, wherein in the third step, determining whether to query the current call forwarding status of the associated user according to different call forwarding association requirements, and in the fourth In the step, it is determined according to the requirement of the call transfer association whether the same change call forwarding state operation is performed on the associated user.

The call forwarding association method according to any one of claims 1 to 4, characterized in that, when the call forwarding function needs to be activated,

In the first step, the terminal receives a command input by the terminal user for starting the call forwarding function for the standby user; In the second step, the terminal sends a call forwarding function registration message to the home location register to which the standby user belongs to activate the call forwarding function; in the third step, the terminal checks information of other users in the terminal; In the fourth step, in the case where there are other users and the same call forwarding function is not activated, a call forwarding function message is sent to the home location register to which the other user belongs to initiate call forwarding.

6. The call forwarding association method according to claim 5, wherein when call forwarding association needs to be implemented for other users who are simultaneously on standby,

In the first step, the terminal receives a command sent by the terminal user to activate the call forwarding function for the standby user;

In the second step, the terminal sends a call transfer registration message to the home location register to which the standby user belongs to activate the call forwarding function;

In the third step, the terminal queries other user information therein to determine whether there is a user in the standby state; after that, proceed to the following steps,

Step A: querying the current state of the call forwarding function of each standby user by using the standby user's own network;

In the case where it is judged in the step A that the state of the call forwarding function is an inactive state, .

In the fourth step, setting a call forwarding registration message of the standby user according to a call forwarding registration message in the second step, and transmitting the call forwarding registration message to a home location register of the other user To initiate the call forwarding feature.

7. The call forwarding association method according to claim 5, wherein when it is required to automatically switch to a network of an unstandby user to implement call forwarding association,

In the third step, the terminal queries information of other users in the terminal to determine whether other users exist; after that, proceed to the following steps. Step A: In the case that there are other users, respectively switch to the network corresponding to the other users in a predetermined order, and switch the standby state of the other users;

Step B: querying the current status of the call forwarding function of each other user by using the other users' own networks;

In the case where it is judged in the step B that the state of the call forwarding function is an inactive state,

In the fourth step, setting a call transfer registration message of the other user according to the call transfer registration message in the second step, and sending the call transfer registration message to the home location register of the other user To initiate the call forwarding feature.

8. The call forwarding association method according to claim 5, wherein after the call forwarding function is activated in the second step, the terminal user switches to another network to perform call forwarding processing.

9. The call forwarding association method according to claim 8, wherein when the terminal user initiates a call forwarding function for the standby user, after the second step, it is checked whether there is currently call forwarding information saved. In the case where the call forwarding information is saved, the previously saved call forwarding information is deleted, and then the current call forwarding information is saved, and if no call forwarding information is saved, the current call forwarding information is directly saved, and the call forwarding information is not executed. The third step and the fourth step.

10. The call forwarding association method according to claim 8, wherein the following steps are performed to implement an unstandby user call transfer association:

Step A: The terminal switches to a new unstandby user for standby;

Step B: Query whether the terminal stores the call forwarding setting information, and if there is call forwarding setting information, proceed to the following steps:

Step C: querying, by the network of the current new standby user, the state of the call forwarding function of the new standby user in the same call forwarding setting information as that stored;

Step D: In the case that the state of the call forwarding function in the step C is the inactive state, the call forwarding function of the current user is set according to the stored call forwarding setting information, and the call forwarding registration message is sent to the current The home location to which the user belongs is used to activate the call forwarding function.