WO2011026376A1 - Method for callback on busy and call processing method, apparatus and system - Google Patents

Abstract

The embodiments of the present invention relate to communications technology field, and disclose a method, apparatus and system for callback on busy. The method includes that a call forwarded by a called Mobile Switch Center (MSC) is received, and the call is forwarded when a calling user calls a called user through the called MSC and under the condition that the called MSC judges the called user is busy and the called user enables a forward on busy function; whether the called user is idle is detected by an Any Time Interrogation (ATI) signaling after that the calling user enables a callback on busy service is judged, and if the called user is idle, the calling user and the called user are connected to communicate with each other. The embodiments of the present invention use the ATI signaling to detect the status of the called user without using a call directly to detect whether the called user is idle, and further reduce the waste of relay links, and will not disturb the called user by using the ATI signaling to detect the status of the called user.

Description

 Busy callback method and call processing method, device and system

This application claims the priority of the Chinese patent application filed on September 2, 2009, which is the priority of the Chinese patent application entitled "A Busy Callback Method and Call Processing Method, Apparatus and System". The citations are incorporated herein by reference. Technical field

 The present invention relates to the field of communications technologies, and in particular, to a busy callback method and a call processing method, apparatus, and system.

Background technique

Call loss is called call loss. It refers to the ratio of the loss of the number of call losses to the total number of calls when the call is not completed due to the busy condition of the called user under normal circumstances. To stipulate. Usually, in this case, the user can only wait for the call to take place again when appropriate. After statistics, the ratio of the number of call loss to the total number of calls due to the busyness of the called user is as high as 1% to 3%. In order to recover this part of the call loss as much as possible, in the Global System for Mobile Communications (GSM, Globa l System for Mobi le Communicat ions) standard and Wideband Code Divi s ion Mul t iple Acces s (WCDMA) standard The CCBS (Completion of Ca lls Busy Subscr iber) service is defined. Busy callback means that when the calling user dials the called user, if the called user is busy, the system will record the information of the calling user and the called user (such as the number, etc.); when the called user is idle, the system automatically The calling user and the called user are connected to complete the original call. It can be seen that the busy callback does not require the calling user to continue to try to dial the called user, which can reduce the call loss and improve the call completion rate. In the prior art, an intelligent network is often used to implement a busy callback. Using the intelligent network to achieve busy When calling back, it needs to load the busy callback service at the intelligent network service control point, and at the same time, the calling user needs to sign the busy callback service on its Home Location Register (HLR). In this way, when the calling user dials the called user, the call is routed to the intelligent network service control point, and the call is sent by the intelligent network service control point to connect the called user. When the called user is busy, the intelligent network service control point is released. The call and execute the busy callback service logic. The busy callback service logic periodically initiates a call to connect to the called user. If the called user is idle, the calling user is prompted to call the user at this time, and the call is automatically initiated to the calling user. The calling user can choose to continue this time. Call, complete the original call.

 The inventor has found that when the prior art uses the intelligent network to implement the busy callback, the intelligent network service control point needs to periodically initiate a call connection operation to the called user in order to determine whether the called user is idle, which wastes the relay link resources. At the same time, the called user may be harassed. Summary of the invention

 The embodiment of the invention provides a busy callback method and a call processing method, device and system, which can implement busy callback without using an intelligent network.

 To achieve the above objective, the embodiment of the present invention provides the following technical solutions:

 The embodiment of the invention provides a busy callback method, including:

 Receiving a call forwarded by the mobile switching center, where the call carries the calling user information, the called user information, and the called user busy information;

 If the calling user enables the busy callback service, the ATI signaling is used to detect whether the called user is idle;

 If the called user is idle, the calling user and the called user are connected to make a call.

The embodiment of the invention provides a call processing method, including: Receiving a call sent by a host user, where the call carries information of the called user and information of the calling user;

 Determining whether the called user is idle, and if not, writing the called user busy information in the call;

 The call written to the called user's busy information is forwarded to the designated busy callback platform for processing. An embodiment of the present invention provides a busy callback device, including:

 a receiving module, configured to receive a call forwarded by the mobile switching center; the call carries the calling user information, the called user information, and the called user busy information;

 a determining module, configured to determine whether the calling user enables the busy callback service;

 a detecting module, configured to detect, by using ATI signaling, whether the called user is idle when the determining result of the determining module is YES;

 And a control module, configured to connect the calling user and the called user to make a call when the detecting module detects that the called user is idle.

 An embodiment of the present invention provides a call processing apparatus, including:

 a receiving module, configured to receive a call sent by a host user, where the call carries information of the called user and information of the calling user;

 a determining module, configured to determine whether the called user is idle;

 a writing module, configured to: when the determining module determines that the called user is busy, write the busy information of the called user in the call;

 The forwarding module is configured to forward the call written to the called user busy information to the designated busy paging platform for processing.

An embodiment of the present invention provides a busy callback system, including: a call processing device and a busy callback device;

 The call processing device is configured to receive a call sent by a host user, where the call carries information of the called user and information of the calling user; and determines whether the called user is idle, and if not, Writing the called user busy information in the call; and forwarding a call written to the called user busy information to the busy callback device;

 The busy callback device is configured to receive a call forwarded by the call processing device, and determine whether the calling user enables the busy callback service, and if yes, use the ATI signaling to detect the called Whether the user is idle or not, if the called user is idle, the calling user and the called user are connected to make a call.

 Compared with the prior art, the mobile switching center forwards the call of the called user to the busy callback platform by the mobile switching center; the busy callback platform determines that the calling user activates the busy callback service. When the ATI signaling is used to detect whether the called user is idle, when the called user is detected to be idle, the calling calling user and the called user are connected to make a call. The embodiment of the present invention does not need to directly detect whether the called user is idle by means of a call, and can further reduce the waste of the relay link, and detecting the state of the called user by using ATI signaling does not interfere with the called user. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG On the premise of this, other drawings can also be obtained according to these figures.

FIG. 1 is a schematic flowchart of a busy callback method according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of a method for detecting a called user state according to an embodiment of the present invention; Figure

 FIG. 3 is a schematic flowchart of another busy callback method according to an embodiment of the present invention; FIG. 4 is a schematic flowchart of a call processing method according to an embodiment of the present invention; FIG. FIG. 6 is a schematic flowchart of a call processing apparatus according to an embodiment of the present invention; FIG. 7 is a schematic diagram of a busy callback system according to an embodiment of the present invention; schematic diagram. detailed description

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

 Referring to FIG. 1, FIG. 1 is a schematic flowchart of a busy callback method according to an embodiment of the present invention. As shown in FIG. 1, the method may include:

 101: Receive a call forwarded by the mobile switching center, where the call carries the calling user information, the called user information, and the called user busy information;

 For example, the call may be when the calling user calls the called user through the mobile switching center, and the mobile switching center determines that the called user is busy, and the called user enables the busy forwarding function to forward, so that In the case where the calling user and the called user are in the same mobile switching center;

 Alternatively, the call may also be when the calling user calls the called user through the called mobile switching center, and the called mobile switching center determines that the called user is busy, and the called user enables the busy forwarding function to forward. In this case, the calling user and the called user are not in the same mobile switching center.

102: If the calling user enables the busy callback service, the ATI signaling is used to detect the called user. Whether it is idle, if yes, connect the calling user and the called user to make a call.

 For example, the calling user and the called user can be connected to make a call according to the calling user information and the called user information (such as the number of the calling user and the number of the called user).

 After connecting the calling user and the called user, the busy callback platform stops the ATI signaling detection. Of course, the busy callback platform can also stop the ATI signaling detection after obtaining the called idle state or stop the ATI signaling detection after the called party answers.

 For example, in the busy callback method provided by the embodiment of the present invention, the busy callback platform may be used to receive a call forwarded by the mobile switching center.

 Further, if the calling user does not enable the busy callback service, the busy callback platform may release the call forwarded by the mobile switching center; or, the busy callback platform first plays the called user to the calling user. The tone of the call, and then release the call forwarded by the mobile switching center.

 In the embodiment of the present invention, the mobile switching center forwards the call of the called user to the busy callback platform; when the busy callback platform determines that the calling user has enabled the busy callback service, the ATI signaling detection is adopted. Whether the user is idle or not, when the called user is idle, the calling user and the called user are connected to make a call. In the embodiment of the present invention, it is not necessary to directly detect whether the called user is idle by means of a call, and the waste of the relay link can be further reduced.

 For example, in the above 102, whether the called user is idle by using ATI signaling can adopt the method shown in FIG. 2. 2 is a schematic flowchart of a method for detecting a state of a called user according to an embodiment of the present invention. In the method shown in FIG. 2, the called mobile switching center MSC may be the same as the calling mobile switching center MSC or different.

 As shown in FIG. 2, the method may include:

201: The busy callback platform periodically sends an ATI to the called subscriber's home location register HLR. Signaling

 202: After receiving the ATI signaling, the called subscriber's home location register sends PSI signaling to the called mobile switching center.

 203: After receiving the PSI signaling, the called mobile switching center sends the idle information of the called user to the home location register of the called user.

 204: The called user's home location register is sent to the busy callback platform after receiving the idle information of the called user.

 In this way, the ATI signaling is used to detect whether the called user is idle, and it is not necessary to directly detect whether the called user is idle by means of a call, which can further reduce the waste of the relay link, and use ATI signaling to detect the state of the called user without harassing. The called user.

 For example, the information of the calling user includes but is not limited to the code number of the calling user, and the information of the called user includes but is not limited to the code number of the called user.

 It should be noted that the method for implementing the call by the busy callback platform to connect the calling user and the called user according to the number of the calling user and the called user is the same as the prior art, and belongs to the technical personnel. Commonly known, the embodiments of the present invention are not described in detail herein.

 In addition, the busy callback method provided by the embodiment of the present invention may further limit the number of times the called user is idle. For example, when the busy callback platform detects whether the called user is idle for a preset number of times through ATI signaling, and the called user is still busy, the busy callback platform may stop continuing to detect whether the called user is idle, Reduce the waste of the trunk link.

The busy callback method provided by the embodiment of the present invention is described. After receiving a call forwarded by the mobile switching center, the embodiment of the present invention adopts ATI signaling detection if the calling user enables the busy callback service. The status of the called user, connecting the calling user when detecting that the called user is idle Make a call with the called user. The embodiment of the present invention does not need to directly detect whether the called user is idle by means of a call, and can further reduce the waste of the relay link, and detecting the state of the called user by using ATI signaling does not interfere with the called user.

 Referring to FIG. 3, FIG. 3 is a schematic flowchart of a busy callback method according to an embodiment of the present invention. In this embodiment, the called user is enabled to enable the busy forwarding function, and the forwarding number is specified in the busy forwarding function, and the forwarding number is the busy paging platform described in the foregoing embodiment. The access code, so that when the called user is busy, the call can be forwarded to the busy callback platform. As shown in FIG. 3, the method may include:

 301: The calling user MSa initiates a call to the calling mobile switching center MSCa;

 302: The calling mobile switching center MSCa sends a (SRI, Send Rout ing Information) message to the called user's home location register HLRb, and obtains the roaming code of the called user.

 303: The called user's home location register HLRb sends a (PRN, Provide Roaming Number) message to the called mobile switching center MSCb, and obtains the roaming code (MSRN, Mob i Station Roaming Number) of the called user;

 304: The called mobile switching center MSCb sends a PRN-ACK message to the called subscriber's home location register HLRb, and returns the called user's roaming code (MSRN);

 305: The called subscriber's home location register HLRb sends an SR T-ACL message to the calling mobile switching center MSCa, and returns the roaming code (MSRN) of the called user;

 306: The calling mobile switching center MSCa sends an IAM message to the called mobile switching center MSCb, and connects the call to the called mobile switching center MSCb;

307: The called mobile switching center MSCb judges that the called user is busy, and the called user enables the busy forwarding function, and the called mobile switching center MSCb transfers the call to the meeting by the busy call forwarding method. Busy callback platform;

 308: The busy callback platform determines that the calling user has enabled the busy callback service, sends an ACM message to the called mobile switching center MSCb, and simultaneously plays a prompt tone of the called user to the calling user, and releases the call;

 309: The busy callback platform records the number of the calling user and the number of the called user, and enables a task of periodically monitoring whether the called user is idle;

 310: The busy callback platform periodically sends an ATI signal to the called subscriber's home location register HLRb;

 311: The home location register of the called user, after receiving the ATI signaling, the HLRb sends the PSI signaling to the called mobile switching center MSCb.

 312: The called mobile switching center MSC returns to the called subscriber's home location register HLRb

PSI_ACK message, carrying the status of the called user;

 The status of the called user refers to whether the called user is currently in a busy state or an idle state. 313: The called subscriber's home location register HLRb returns an ATI-ACK message to the busy callback platform, carrying the state of the called subscriber, so that the busy callback platform can know whether the called subscriber is idle.

 314: If the called user is idle, the busy callback platform connects the calling user and the called user according to the recorded calling party number and the called user's number respectively.

 It should be noted that the method for implementing the call by the busy callback platform to connect the calling user and the called user according to the recorded number of the calling user and the number of the called user is the same as the prior art, and belongs to the prior art. Common knowledge is known to the skilled person, and the embodiments of the present invention are not described in detail herein.

In addition, the busy callback method provided by the embodiment of the present invention may further detect the called user. The maximum number of times of idle time is limited. For example, when the busy callback platform detects whether the called user is idle by the ATI signaling and reaches the preset maximum number of times, the called user is still busy, and the busy callback platform can stop detecting whether the called user is idle. To reduce the waste of the relay link.

 The method for the busy callback provided by the embodiment of the present invention is described. The embodiment of the present invention does not need to directly detect whether the called user is idle by means of a call, and can further reduce the waste of the relay link, and the ATI signaling detection is used. The status of the called user does not interfere with the called user.

 Referring to FIG. 4, FIG. 4 is a schematic flowchart diagram of a call processing method according to an embodiment of the present invention. As shown in FIG. 4, the call processing method may include:

 401: Receive a call sent by a host user, where the call carries information about the called user and information of the calling user.

 For example, the information of the calling user includes but is not limited to the code number of the calling user, and the information of the called user includes but is not limited to the code number of the called user.

 402: Determine whether the called user is idle, and if not, write the called user busy information in the above call;

 For example, the called user busy information can be written in the reserved byte in the above call, for example, "1" can be written in the reserved byte in the above call, indicating that the called user is busy, and the like.

 403: Forward the call written to the called user's busy information to the designated busy callback platform for processing. For example, assuming that the called user has enabled the busy forwarding function and the forwarding number is specified in the busy forwarding function, the above 403 can forward the call to the busy paging platform according to the forwarding number.

 For example, the call processing method provided by the embodiment of the present invention may further include:

Receiving PSI signaling sent by the called user's home location register periodically; The information of whether the called user is idle is sent to the home location register of the called user, so that the called user's home location register sends the information of whether the called user is idle to the busy paging platform.

 After the information about whether the called user is idle is sent to the busy callback platform, the busy callback platform can determine whether the called user is idle, and connect the calling user and the called user to make a call when detecting that the called user is idle. In this way, the waste of the relay link can be further reduced.

 Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a busy callback device according to an embodiment of the present invention. The busy callback device provided by the embodiment of the present invention can implement the function of the above busy callback platform. As shown in FIG. 5, the apparatus may include:

 The receiving module 501 is configured to receive a call forwarded by the mobile switching center, where the call carries the calling user information, the called user information, and the called user busy information.

 For example, the information of the calling user includes but is not limited to the code number of the calling user, and the information of the called user includes but is not limited to the code number of the called user.

 For example, the call may be when the calling user calls the called user through the mobile switching center, and the mobile switching center determines that the called user is busy, and the called user enables the busy forwarding function to forward, so that In the case where the calling user and the called user are in the same mobile switching center;

 Alternatively, the call may also be when the calling user calls the called user through the called mobile switching center, and the called mobile switching center determines that the called user is busy, and the called user enables the busy forwarding function to forward. In this case, the calling user and the called user are not in the same mobile switching center.

 The determining module 502 is configured to determine whether the calling user enables the busy callback service;

 The detecting module 503 is configured to: when the determining module 502 determines that the calling user enables the busy callback service, use the ATI signaling to detect whether the called user is idle;

The control module 504 is configured to connect the calling party when the detecting module 503 detects that the called user is idle. The user and the called user make a call.

 Further, the control module 504 can be further configured to release the call forwarded by the mobile switching center when the determining module 502 determines that the calling user does not enable the busy callback service; or the control module 504 can be used in the determining module 502. When it is determined that the calling user does not enable the busy callback service, the calling user is first played a prompt tone of the called user, and then the call forwarded by the mobile switching center is released.

 For example, the detecting module 503 can periodically send ATI signaling to the called user's home location register, and receive the called user's idle information sent by the called user's home location register; whether the called user's idle information is the called user The home location register is obtained by transmitting PSI signaling to the mobile switching center after receiving the ATI signaling.

 In this way, the ATI signaling is used to detect whether the called user is idle, and it is not necessary to directly detect whether the called user is idle by means of a call, which can further reduce the waste of the relay link, and use ATI signaling to detect the state of the called user without harassing. The called user.

 It should be noted that the specific implementation method for the control module 504 to connect the calling user and the called user to make a call according to the recorded number of the calling user and the number of the called user is the same as the prior art, and belongs to those skilled in the art. Commonly known, the embodiments of the present invention are not described in detail herein.

 In addition, the busy callback device provided by the embodiment of the present invention may further limit the number of times the called user is idle. For example, when the detecting module 503 detects whether the called user is idle for a preset number of times by using ATI signaling, and the called user is still busy, the control module 504 may stop continuing to detect whether the called user is idle, thereby reducing the relay chain. Waste of the road.

The foregoing describes the busy callback device provided by the embodiment of the present invention. After the busy callback device provided by the embodiment of the present invention receives the call forwarded before the called mobile switching center, if the calling user is determined to be busy For the callback service, the ATI signaling is used to detect the status of the called user. When the called user is idle, the calling user and the called user are connected to make a call. In the embodiment of the present invention, it is not necessary to directly detect whether the called user is idle by means of a call, and the waste of the relay link can be further reduced, and detecting the state of the called user by using ATI signaling does not interfere with the called user.

 Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a call processing apparatus according to an embodiment of the present invention. As shown in FIG. 6, the call processing apparatus may include:

 The receiving module 601 is configured to receive a call sent by the host user, where the call carries the information of the called user and the information of the calling user.

 For example, the information of the calling user includes but is not limited to the code number of the calling user, and the information of the called user includes but is not limited to the code number of the called user.

 The determining module 602 is configured to determine whether the called user is idle;

 The writing module 603 is configured to: when the determining module 602 determines that the called user is busy, write the called user busy information in the call;

 For example, the writing module 603 can write the called user busy information in the reserved byte in the above call. For example, the writing module 603 can write "1" in the reserved byte in the above call, indicating that it is Call the user busy and so on.

 The forwarding module 604 is configured to forward the call that writes the busy information of the called user to the designated busy paging platform for processing.

 For example, assuming that the called user has enabled the busy forwarding function and specifies the forwarding number in the busy forwarding function, the forwarding module 604 can forward the call to the busy paging platform according to the forwarding number. deal with.

For example, the receiving module 601 can also be configured to periodically receive the PSI signaling sent by the home location register of the called user. In this case, the call processing apparatus may further include: The sending module 605 is configured to send information about whether the called user is idle to the home location register of the called user, so that the called user's home location register sends the information of whether the called user is idle to the busy callback platform.

 After the sending module 605 sends the information of whether the called user is idle to the busy paging platform, the busy paging platform can determine whether the called user is idle, and connects the calling user and the called user to make a call when detecting that the called user is idle. . In this way, the waste of the relay link can be further reduced.

 Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a busy callback system according to an embodiment of the present invention. As shown in Figure 7, the system can include:

 The call processing device 701 and the busy callback device 702; wherein the dotted line indicates that the call processing device 701 and the busy callback device 702 may be directly connected or indirectly connected.

 The call processing device 701 is configured to receive a call sent by the host user, where the call carries the information of the called user and the information of the calling user; and determines whether the called user is idle, and if not, writes the called party in the call. The user is busy; and forwards the call to the called user's busy information to the busy callback device 702.

 For example, the information of the calling user includes but is not limited to the code number of the calling user, and the information of the called user includes but is not limited to the code number of the called user.

 For example, the call processing device 701 can write the called user busy information in the reserved byte in the call when determining that the called user is busy, for example, can write "1" in the reserved byte in the call. " or "0" means that the called user is busy and so on.

For example, assuming that the called user has enabled the busy forwarding function and the forwarding number is specified in the busy forwarding function, the call processing device 701 can forward the call to the busy paging platform according to the forwarding number. deal with. The busy callback device 702 is configured to receive a call forwarded by the call processing device 701, and determine whether the calling user enables the busy callback service, and if yes, use the ATI signaling to detect whether the called user is idle, if If the called user is idle, the calling user and the called user are connected to make a call.

 Further, the busy callback device 702 can also be used to release the call forwarded by the mobile switching center when determining that the calling user does not enable the busy callback service; or, for determining that the calling user is not enabled to be busy When the service is called back, the calling user is first played a prompt tone of the called user, and then the call forwarded by the mobile switching center is released.

 For example, the busy callback device 702 can periodically send ATI signaling to the called user's home location register, and receive the called user's idle information sent by the called user's home location register; whether the called user is idle information is The home location register of the called user is obtained by transmitting PSI signaling to the mobile switching center after receiving the ATI signaling.

 In this way, the ATI signaling is used to detect whether the called user is idle, and it is not necessary to directly detect whether the called user is idle by means of a call, which can further reduce the waste of the relay link, and use ATI signaling to detect the state of the called user without harassing. The called user.

 It should be noted that the busy callback device 702 can connect the calling user and the called user according to the recorded number of the calling user and the number of the called user, and the specific implementation method is the same as the prior art. Common knowledge is known to those skilled in the art, and the embodiments of the present invention are not described in detail herein.

 In addition, the busy callback system provided by the embodiment of the present invention may further limit the number of times the called user is idle. For example, when the busy callback device 702 detects whether the called user is idle for a preset number of times through the ATI signaling, and the called user is still busy, the busy callback device 702 can stop continuing to detect whether the called user is idle. To reduce the waste of the relay link.

The above described busy callback system provided by the embodiment of the present invention is introduced. After the busy callback system 702 receives the call transferred by the call processing device 701, if the busy callback device 702 determines that the calling user has enabled the busy callback service, the ATI signaling is used to detect the status of the called user. Connect the calling user and the called user to make a call when detecting that the called user is idle. The embodiment of the present invention does not need to directly detect whether the called user is idle by means of a call, and can further reduce the waste of the relay link, and detecting the state of the called user by using ATI signaling does not interfere with the called user.

 A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage medium includes the following: The storage medium includes: a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

 The busy callback method and the call processing method and apparatus provided by the embodiments of the present invention are described above. The description of the above embodiments is only used to help understand the method and core idea of the present invention; The present invention is not limited by the scope of the present invention, and the details of the present invention are not limited by the scope of the present invention.

Claims

Rights request

 A busy callback method, characterized in that:

 Receiving a call forwarded by the mobile switching center, where the call carries the calling user information, the called user information, and the called user busy information;

 If the calling user enables the busy callback service, the ATI signaling is used to detect whether the called user is idle;

 If the called user is idle, the calling user and the called user are connected to make a call.

 The method of claim 1, wherein the method further comprises: if the calling user does not enable the busy callback service, the method further includes:

 Release the call;

 Or playing a prompt tone of the called user to the calling user, and releasing the call.

 The method according to claim 1, wherein the detecting, by the ATI signaling, whether the called user is idle, includes:

 Timing to send ATI signaling to the home location register of the called user;

 Receiving, by the home location register, whether the called user is idle information; whether the called user is idle information, after the home location register receives the ATI signaling, sending PSI signaling to the mobile switching center And got it.

 4. The method according to claim 1, wherein the connecting the calling user and the called user to make a call comprises:

 Connecting the calling user and the called user to perform a call according to the information of the calling user and the called user information; the information of the called user includes a code number of the calling user, and the information of the called user includes The code number of the called user.

5. The method of any of claims 1, 3, and 4, further comprising: If the number of times the called user is idle is detected by the ATI signaling, the number of times the called user has reached a preset number of times stops detecting whether the called user is idle.

 6. A call processing method, comprising:

 Receiving a call sent by a host user, the call carrying information of the called user and information of the calling user;

 Determining whether the called user is idle, and if not, writing the called user busy information in the call;

 The call written to the called user's busy information is forwarded to the designated busy callback platform for processing.

 7. The method of claim 6, further comprising:

 Receiving PSI signaling sent by the called user's home location register periodically;

 Sending information about whether the called user is idle to the home location register, so that the home location register sends information about whether the called user is idle to the busy callback platform.

 8. The method according to claim 6 or 7, wherein the call to the called busy information of the called user is forwarded to the specified busy callback platform processing, including:

 Forwarding the call written to the called user's busy information to the designated busy callback platform according to the busy callback platform number acquired in advance.

 9. A busy callback device, characterized in that:

 a receiving module, configured to receive a call forwarded by the mobile switching center; the call carries the calling user information, the called user information, and the called user busy information;

 a determining module, configured to determine whether the calling user enables the busy callback service;

a detecting module, configured to detect, by using ATI signaling, whether the called user is idle when the determining result of the determining module is YES; And a control module, configured to connect the calling user and the called user to make a call when the detecting module detects that the called user is idle.

 The busy callback device according to claim 9, wherein the control module is further configured to: when the determining module determines that the calling user does not enable the busy callback service, releasing the Calling; or, playing the called user's busy tone to the calling user, and releasing the call.

 The busy callback device according to claim 9, wherein the detecting module is configured to periodically send ATI signaling to a home location register of the called user, and receive the home location register to send Whether the called user is idle information; whether the called user idle information is obtained by the PST signaling sent to the mobile switching center after the home location register receives the ATI signaling.

 12. A call processing apparatus, comprising:

 a receiving module, configured to receive a call sent by a host user, where the call carries information of the called user and information of the calling user;

 a determining module, configured to determine whether the called user is idle;

 a writing module, configured to: when the determining module determines that the called user is busy, write the busy information of the called user in the call;

 The forwarding module is configured to forward the call written to the called user busy information to the designated busy paging platform for processing.

The call processing device according to claim 12, wherein the receiving module is further configured to receive the PSI signaling sent by the home location register of the called user, and the call processing device further includes: And a sending module, configured to send information about whether the called user is idle to the home location register, so that the home location register sends information about whether the called user is idle to the busy callback platform.

 14. A busy callback system, characterized in that:

 a call processing device and a busy callback device;

 The call processing device is configured to receive a call sent by a host user, where the call carries information of the called user and information of the calling user; and determines whether the called user is idle, and if not, Writing the called user busy information in the call; and forwarding a call written to the called user busy information to the busy callback device;

 The busy callback device is configured to receive a call forwarded by the call processing device, and determine whether the calling user enables the busy callback service, and if yes, use the ATI signaling to detect the called Whether the user is idle or not, if the called user is idle, the calling user and the called user are connected to make a call.