WO2016061731A1 - Call method and apparatus - Google Patents

Abstract

Provided are a call method and apparatus, which relate to the field of communications. It can be achieved that a terminal in a call restriction state quickly communicates with other terminals. The method includes: receiving, by a first terminal, indication information triggered by a user, the indication information being configured to indicate that the first terminal initiates a voice call to a second terminal via a circuit switched (CS) domain; and sending, by the first terminal, a notification message to the second terminal via a packet switched (PS) domain when the first terminal is in a call restriction state, wherein the call restriction state is a state in which the voice call cannot be executed via the CS domain.

Description

Call method and device Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a calling method and apparatus.

Background technique

Currently, mobile phones are widely used as a common communication tool. The average operator charges the mobile phone service in a prepaid manner. The prepaid method is: the mobile phone user pre-stores a certain communication fee, and when the pre-stored communication fee is used up, the mobile phone is in arrears state.

The existing mobile phone service can be divided into a voice service through a CS (Circuit Switched) domain and a data service through a PS (Packet Switch) domain. The carrier has different charging nodes for the voice service and the packet data service. The voice service is charged by the MSC (Mobile Switching Center), and the packet data service is used by the GGSN (Gateway General Packet Radio Service Support Node). Billing. When the mobile phone is in arrears state, the user cannot use the mobile phone to make a call through the CS domain, but the user can still use the mobile phone to complete the data service of the PS domain within a certain period of time.

In the prior art, when the mobile phone is in arrears, it is often impossible to notify the user in time. In many cases, the user uses the mobile phone to make a call through the CS domain and when the call cannot be dialed, the mobile phone is already in arrears. At this time, if the user cannot recharge in time and wants to use the mobile phone to communicate with other mobile phones, the user can open an application that uses the data service and then communicate with other mobile phones through the application. Thus, when the mobile phone is in arrears state, the user has to perform a number of operational steps from the operation of making a call to the communication by using an application of the data service.

Summary of the invention

Embodiments of the present invention provide a calling method and apparatus to implement a terminal call When called the restricted state, it can quickly communicate with other terminals.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a calling method, including:

The first terminal receives the indication information triggered by the user, where the indication information is used to indicate that the first terminal initiates a voice call to the second terminal by using the circuit switched CS domain;

When the first terminal is in a call restriction state, the first terminal sends a notification message to the second terminal by using a packet switched PS domain, where the notification message includes a message indicating that the first terminal is in a call restriction state. First information and second information for identifying the first terminal; the call restriction state is a state in which a voice call cannot be performed through the CS domain.

In a first possible implementation manner of the first aspect, the call restriction state is specifically: a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain;

The notification message further includes third information for requesting the second terminal to call the first terminal.

In a second possible implementation manner of the first aspect, the call restriction state is specifically: a state in which a voice call and a voice call cannot be performed through the CS domain;

When the first terminal is in the call restriction state, the first terminal sends a notification message to the second terminal by using the PS domain, including:

When the first terminal is in a call restriction state, and the elapsed time of the first terminal is less than a first threshold, the first terminal sends a notification message to the second terminal by using the PS domain.

According to the first aspect or the first possible implementation of the first aspect to any one of the possible implementations of the second possible implementation of the first aspect, the third possible implementation in the first aspect The method further includes: before the sending, by the first terminal, the notification message to the second terminal by using the PS domain, the method further includes:

The first terminal prompts the user to initiate a notification function, where the notification function is a function of sending a message through the PS domain;

The first terminal receives a start command triggered by a user, and the start command is used to refer to Initiating the notification function;

The first terminal generates the notification message according to the startup instruction.

In a second aspect, an embodiment of the present invention provides a calling method, including:

Receiving, by the second terminal, the notification message sent by the first terminal by using the packet switched PS domain;

The second terminal displays the notification message on a screen;

The second terminal receives a determination instruction triggered by the user for making a voice call to the first terminal;

And the second terminal initiates a voice call to the first terminal by using a circuit switched CS domain according to the determining instruction.

In a first possible implementation manner of the second aspect, the notification message includes: first information used to indicate that the first terminal is in a call restriction state, and is used to identify second information of the first terminal, And third information for requesting the second terminal to call the first terminal;

The second terminal displays the notification message on the screen, including:

Determining, by the second terminal, whether the second information in the notification message is in an address record of the second terminal;

If the second information is in the address book, the second terminal acquires a user identifier corresponding to the second information;

The second terminal displays a notification message including the user identifier.

In a third aspect, an embodiment of the present invention provides a first terminal, including:

a receiving unit, configured to receive indication information triggered by the user, where the indication information is used to indicate that the first terminal initiates a voice call to the second terminal by using a circuit switched CS domain;

a sending unit, configured to send, by using a packet-switched PS domain, a notification message to the second terminal when the first terminal is in a call restriction state, where the notification message includes a message indicating that the first terminal is in a call restriction state. First information and second information for identifying the first terminal; the call restriction state is a state in which a voice call cannot be performed through the CS domain.

In a first possible implementation manner of the third aspect, the call restriction state is specifically: the voice call cannot be performed through the CS domain, and the voice call can be performed through the CS domain. status;

The notification message further includes third information for requesting the second terminal to call the terminal.

In a second possible implementation manner of the third aspect, the call restriction state is specifically: a state in which a voice call and a voice call cannot be performed through the CS domain;

The sending unit is configured to send a notification message to the second terminal through the PS domain when the first terminal is in a call restriction state and the arrears duration of the first terminal is less than a first threshold.

According to the foregoing third aspect or the first possible implementation of the third aspect to any one of the possible implementations of the second possible implementation of the third aspect, the third possible implementation of the third aspect In the mode, the first terminal further includes a prompting unit,

The prompting unit is configured to prompt the user to start a notification function before the sending unit sends a notification message to the second terminal by using the PS domain, where the notification function is a function of sending a message through the PS domain;

The receiving unit is further configured to receive a start command triggered by a user, where the start command is used to instruct to start the notification function;

The first terminal further includes a generating unit,

The generating unit is configured to generate the notification message according to the startup instruction received by the receiving unit.

In a fourth aspect, the embodiment of the present invention provides a second terminal, including:

a receiving unit, configured to receive, by using a packet switched PS domain, a notification message sent by the first terminal, and a receiving instruction for receiving a voice call to the first terminal triggered by the user;

a display unit, configured to display, on a screen, the notification message received by the receiving unit;

And a sending unit, configured to initiate a voice call to the first terminal by using a circuit switched CS domain according to the determining instruction received by the receiving unit.

In a first possible implementation manner of the fourth aspect, the notification message includes: first information indicating that the first terminal is in a call restriction state, and is used to identify the location Decoding second information of the first terminal, and third information for requesting the second terminal to call the first terminal;

The second terminal further includes a determining unit,

The determining unit is configured to determine whether the second information in the notification message received by the receiving unit is in an address record of the second terminal;

An obtaining unit, configured to acquire a user identifier corresponding to the second information if the determining unit determines that the second information is in the address book;

The display unit is specifically configured to display a notification message that includes the user identifier acquired by the acquiring unit.

In a fifth aspect, an embodiment of the present invention provides a first terminal, including:

a transceiver for communicating data with the outside;

a processor, configured to receive indication information triggered by the user, where the indication information is used to indicate that the first terminal initiates a voice call to the second terminal by using a circuit switched CS domain;

The processor is further configured to: when the first terminal is in a call restriction state, send, by using the transceiver, a notification message to the second terminal in a packet switched PS domain, where the notification message includes The first terminal is in a call restriction state and the second information is used to identify the first terminal; the call restriction state is a state in which a voice call cannot be performed through the CS domain.

In a first possible implementation manner of the fifth aspect, the call restriction state is specifically: a state in which a voice call cannot be performed through the CS domain, and a voice answering state can be performed through the CS domain;

The notification message further includes third information for requesting the second terminal to call the terminal.

In a second possible implementation manner of the fifth aspect, the call restriction state is specifically: a state in which a voice call and a voice call cannot be performed through the CS domain;

The processor is configured to: when the first terminal is in a call restriction state, send a notification message to the second terminal by using the transceiver in the PS domain, when the first terminal is in a call restriction state, And when the attenuating time of the first terminal is less than the first threshold, sending, by the transceiver, a notification message to the second terminal in the PS domain.

According to the foregoing fifth aspect or the first possible implementation of the fifth aspect to any one of the possible implementations of the second possible implementation of the fifth aspect, the third possible implementation of the fifth aspect In the mode, the first terminal further includes a display;

The processor is further configured to: after the sending, by the transceiver, the notification message to the second terminal in the PS domain, prompting the user to initiate a notification function by using the display, where the notification function is a function of sending a message through the PS domain. ;

The processor is further configured to receive a startup command triggered by a user, where the startup instruction is used to instruct to start the notification function, and generate the notification message according to the received startup instruction.

In a sixth aspect, the embodiment of the present invention provides a second terminal, including:

a transceiver for communicating data with the outside;

a processor, configured to receive, by the transceiver, a notification message sent by the first terminal in a packet switched PS domain, and to receive a user-triggered determination instruction for making a voice call to the first terminal, and Receiving the determining instruction, and initiating a voice call to the first terminal by using a circuit switched CS domain;

a display for displaying the notification message received by the processor on a screen.

In a first possible implementation manner of the sixth aspect, the notification message includes: first information that is used to indicate that the first terminal is in a call restriction state, and is used to identify second information of the first terminal, And third information for requesting the second terminal to call the first terminal;

The processor is further configured to determine whether the second information in the received notification message is in an address book of the second terminal, and if the determining the second information is in the In the address book, acquiring a user identifier corresponding to the second information;

The display is specifically configured to display a notification message that includes the user identifier acquired by the processor.

The embodiment of the present invention provides a call method and apparatus. After the first terminal receives the indication information triggered by the user to instruct the first terminal to initiate a voice call to the second terminal through the CS domain, the first terminal is in a call restriction state. That is, when the first terminal is in a state in which the voice call cannot be performed through the CS domain, the first terminal sends the second terminal to the second terminal through the PS domain. And sending a notification message, wherein the notification message includes first information indicating that the first terminal is in a call restriction state.

With the solution, when the first terminal is in the call restriction state, the first terminal receives the indication information that the first terminal initiates a voice call to the second terminal by using the CS domain, and the first terminal can directly pass the PS. The domain sends a notification message to the second terminal, so that the first terminal can quickly communicate with the second terminal, which solves the problem in the prior art that when the first terminal is in the call restriction state, the user only opens the data used in the first terminal. After the application of the service, the application can communicate with other terminals to cause more user operation steps and communication failures.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention.

1 is a schematic flowchart 1 of a call method according to an embodiment of the present invention;

2 is a second schematic diagram of a call method according to an embodiment of the present invention;

3 is a schematic flowchart 3 of a call method according to an embodiment of the present invention;

4 is a schematic structural diagram 1 of a first terminal according to an embodiment of the present invention;

FIG. 5 is a second schematic structural diagram of a first terminal according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram 1 of a second terminal according to an embodiment of the present invention;

FIG. 7 is a second schematic structural diagram of a second terminal according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram 3 of a first terminal according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram 3 of a first terminal according to an embodiment of the present invention.

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, but not all embodiments.

In the following description, for purposes of illustration and not limitation, Specific details such as structure, interface, technology, etc., are used to understand the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the invention.

In addition, the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

When the embodiments of the present invention refer to ordinal numbers such as "first", "second" and the like, unless they are intended to express the order according to the context, it should be understood as merely distinguishing.

Embodiment 1

An embodiment of the present invention provides a calling method, as shown in FIG. 1 , including:

S101. The first terminal receives the indication information triggered by the user, where the indication information is used to indicate that the first terminal initiates a voice call to the second terminal by using the CS domain.

S102. When the first terminal is in a call restriction state, the first terminal sends a notification message to the second terminal by using the PS domain.

The notification message includes first information indicating that the first terminal is in a call restriction state and second information for identifying the first terminal. Illustratively, the second information used to identify the first terminal may be the phone number of the first terminal, or may be the IMSI (International Mobile Subscriber Identification Number) of the first terminal, which is not used in the embodiment of the present invention. limited.

After receiving the indication information, the first terminal determines which state it is in, and then performs subsequent call processing according to the state in which it is located. The state of the first terminal may be a restricted call state (that is, a state in which a voice call cannot be performed through the CS domain, which may be understood as an arrears state), and may also be a state of no arrears (ie, a voice call may be performed through the CS domain) And answering the voice).

Specifically, if the first terminal determines that the first terminal is in the restricted call state, the first terminal sends a notification message to the second terminal by using the PS domain, so that the second terminal learns that the first terminal is in the call restriction state according to the notification message. If the first terminal determines the end If the terminal is in the state of no payment, the first terminal initiates a voice call to the second terminal through the CS domain according to the indication information.

The method for the first terminal to determine the state of the first terminal may be: after receiving the indication information triggered by the user, the first terminal queries the pre-stored state information, where the pre-stored state information is the first terminal Querying, at a preset time, whether the flag bit of the card file indicates that the first terminal is in arrears state, and if the tag bit of the card file indicates that the first terminal is in arrears state, the first terminal stores the status information; or, receiving After the user triggers the indication information, the first terminal accesses the network side device according to the indication information. If the first terminal receives the rejection command sent by the network side device, the first terminal is in the restricted call state.

The card file is a file preset in the first terminal, and the flag bit of the card file may be a flag bit specified in the protocol standard, and may be used to indicate whether the first terminal is in arrears state. When the first terminal is in the arrears state, the first terminal receives the arrears instruction sent by the network side device, and rewrites the value of the flag bit of the card file according to the arrears instruction. When the value of the flag bit of the card file is greater than a preset threshold, the flag bit of the card file indicates that the first terminal is in arrears state.

Specifically, the first terminal may poll the card file at a preset time to detect whether it is in arrears state. If the first terminal reads the card file, the flag bit indicates that the first terminal is in arrears, then the The first terminal records the current time in the card file as the time when the arrears occurred.

Exemplarily, the terminal A queries the card file every 10 minutes to check whether it is in arrears state. If the terminal A owes a fee at 12:00 on September 30, 2013, the tag bit of the card file of the terminal A indicates the terminal. A is in arrears state, terminal A inquires the card file at 12:05 on September 30, 2013, and terminal A records 12:05 on September 30, 2013 as the time when the arrears occurred.

The call restriction state in the embodiment of the present invention specifically includes: (1) a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain; and (2) a state in which voice call and voice call cannot be performed through the CS domain.

When the first terminal is unable to perform a voice call through the CS domain, it can pass the CS domain. When the voice receiving state is performed, the notification message sent by the first terminal to the second terminal further includes third information for requesting the second terminal to call the first terminal.

Exemplarily, user A's mobile phone number is 12345678. When user A uses mobile phone to call user B, if user A's mobile phone is in a state where it can only answer the phone and cannot make a call, user A's mobile phone sends The content is "12345678 user has owed a fee, the user requested you to call back" notification message to user B.

When the first terminal is in a state in which the voice call and the voice call cannot be performed through the CS domain, after the first terminal determines that the state thereof meets the preset condition, the first terminal sends a notification message to the second terminal through the PS domain. The preset condition may be that the arrears of the first terminal is less than the first threshold, or that the amount of the arrears of the first terminal is less than the second threshold, which is not limited in the embodiment of the present invention. It should be noted that, as long as the first terminal can send the notification message through the PS domain, the first terminal can be considered to be in a state that meets the preset condition.

The method for determining, by the first terminal, the length of the arrears is: the first terminal obtains the arrears occurrence time and the current time, and then the first terminal determines the arrears duration according to the arrears occurrence time and the current time. The first terminal may obtain the time when the arrears occur by querying the card file.

Exemplarily, if the mobile phone A is in a state in which the call cannot be answered and the call is made, the first threshold is 12 hours, and the mobile phone A receives the user-triggered voice call for the mobile phone B at 09:00 on October 1, 2013. After the instruction message is read, the time when the arrears are read from the card file is 01:00 on October 1, 2013. The mobile phone A compares the time of the arrears with the current time, and determines that the arrears of the mobile phone A are 8 hours. (From October 1st, 2013, from 09:00 to October 1st, 2013 at 01:00), Mobile Phone A compared its 8 hours of arrears with the first threshold of 12 hours, and learned that Terminal A was in arrears for 8 hours. When the first threshold is less than 12 hours, the mobile phone A sends a notification message "A user has owed a fee" to the mobile phone B through the PS domain.

It should be noted that, when the first terminal sends a notification message to the second terminal through the PS domain in the embodiment of the present invention, the first terminal may use the GPRS (General Packet Radio Service) function, or may use Wi -Fi The (Wireless-Fidelity) function can also utilize the 3G or 4G function, which is not limited in the embodiment of the present invention.

GPRS provides medium-speed data transmission by utilizing unused TDMA (Time Division Multiple Access) channels in a GSM (Global System For Mobile Communications) network. GPRS breaks through the GSM network can only provide circuit switching thinking mode, by adding SGSN (Serving GPRS Support Node, Serving GPRS Support Node), GGSN (Gateway GPRS Support Node, Gateway GPRS Support Node), etc. The functional entity and the base station system of the GSM network are partially modified to implement packet switching. The investment in this transformation is relatively small, but the user data rate obtained is considerable. Moreover, because the mediation converters required by current wireless applications are no longer needed, connectivity and transmission are more convenient and easy. In this way, users can access the Internet and participate in interactive communication such as video conferencing, and users on the same video network can even connect to the Internet without dialing the Internet.

Wi-Fi is a technology that can connect terminals such as personal computers and handheld devices (such as PDAs and mobile phones) wirelessly. It is the most popular short-range wireless transmission technology and is also a wireless network. technology. In the past, user terminal networking was only possible through network cable networking, but now it is connected by radio waves. At present, the common Wi-Fi technology device is a wireless router. The wireless coverage of the wireless router can be connected by Wi-Fi connection. If the wireless router is connected to an asymmetric digital subscriber loop (ADSL, Asymmetric Digital Subscriber Line) or other Internet access lines are also known as "hot spots."

The embodiment of the present invention provides a calling method. After the first terminal receives the indication information triggered by the user to indicate that the first terminal initiates a voice call to the second terminal by using the circuit switched CS domain, the first terminal is in a call restriction state. That is, when the first terminal is in a state in which the voice call cannot be performed through the CS domain, the first terminal sends a notification message to the second terminal by using the packet switched PS domain, where the notification message includes the first message indicating that the first terminal is in the call restriction state. information.

With the solution, when the first terminal is in a call restriction state, the first terminal is in Receiving the indication information that the first terminal initiates the voice call to the second terminal by using the CS domain, the first terminal may directly send the notification message to the second terminal through the PS domain, so that the first terminal can be quickly The second terminal performs communication, and solves the user operation in the prior art that when the first terminal is in the call restriction state, the user can only use the application to communicate with other terminals after opening the application that uses the data service in the first terminal. There are many steps and the communication is not timely.

Embodiment 2

An embodiment of the present invention provides a calling method, as shown in FIG. 2, including:

S201. The second terminal receives the notification message sent by the first terminal by using the PS domain.

The notification message includes: first information for indicating that the first terminal is in a call restriction state, second information for identifying the first terminal, and third information for requesting the second terminal to call the first terminal. The call status is restricted to a state in which voice calls cannot be performed through the CS domain.

For example, the second information used to identify the first terminal may be the phone number of the first terminal, or may be the IMSI of the first terminal, which is not limited in the embodiment of the present invention.

S202. The second terminal displays a notification message on the screen.

Specifically, after receiving the notification message sent by the first terminal by using the PS domain, the second terminal notifies the user of the notification message according to a preset notification manner, and displays the notification message on its screen. The preset notification manner includes a ringing, a vibration, a ringing, a vibration, a floating icon, and the like, which are not limited in the embodiment of the present invention.

Further, after receiving the notification message, the second terminal determines whether the second information in the received notification message is in its address book, and if the second terminal determines that the second information in the notification message is in its address book The second terminal acquires the user identifier corresponding to the second information, and finally, the second terminal displays the notification message including the user identifier; if the second terminal determines that the second information is not in the address book, the second terminal The terminal directly displays the received notification message.

The address record of the second terminal is a list set by the user through a preset application in the second terminal, and the address book may include the name of the user and the phone number of the user. The correspondence between the preset applications is an application that includes the function of setting the address book.

The second terminal determines, according to the determination result of the second terminal whether the second information is in the address book, the method for displaying the notification message, which can facilitate the user to identify whether the notification message is a fraud message, and reduce the probability of occurrence of the phone fraud.

Exemplarily, the terminal A receives the notification message through the PS domain, where the notification message includes at least the telephone number 12345678 of the terminal B, and the terminal A determines whether the telephone number 12345678 is in its address book, and if the telephone number 12345678 is in the communication of the terminal A. If the user ID corresponding to the phone number 12345678 is User A, then Terminal A displays "User A (12345678) has owed a fee, the user requests you to call back"; if the phone number 12345678 is not in the address book of Terminal A, Then terminal A directly displays "12345678 has been owed, the user requested you to call back."

S203. The second terminal receives a determination instruction triggered by the user for making a voice call to the first terminal.

After receiving and displaying the notification message, the second terminal can be informed by the second terminal that another user requests its callback call. The user may select a selection option through the second terminal to implement voice communication with the user of the first terminal, or may abandon voice communication with the user of the first terminal by using the second terminal selection cancellation option.

Specifically, if the user agrees to call back to the user of the first terminal, the user receives the determination option by the second terminal, and the second terminal receives the determination instruction, where the determination instruction is used to indicate that the second terminal is the first The terminal makes a voice call.

Exemplarily, if the display interface of the user A's mobile phone displays a window containing "User B requests you to call back" "Yes" and "No", when User A selects the "Yes" option, the user A agrees to call back. To user B, user A's mobile phone receives a determination command for instructing to initiate a voice call to user B's mobile phone.

S204. The second terminal initiates a voice call to the first terminal by using the CS domain according to the determining instruction.

Specifically, after receiving the determining instruction, the second terminal automatically accesses the network testing device according to the determining instruction to implement a voice communication connection with the first terminal.

It should be noted that, in the embodiment of the present invention, the network side device is the second terminal and the first The method for establishing a voice communication connection between the terminals is the same as the method for establishing a voice call connection with the network side device in the prior art, and details are not described herein again.

An embodiment of the present invention provides a calling method, where a second terminal receives a notification message sent by a first terminal through a PS domain and displays it on a screen thereof, and the second terminal only needs to receive a voice triggered by the user for transmitting to the first terminal. The determining instruction of the call can initiate a voice call to the first terminal through the CS domain. In this way, even if the first terminal is in the call restriction state, the user can still use the first terminal to perform a voice call, and the user completes the voice communication with the first terminal by using the second terminal according to the notification message, and the user has fewer steps. The user experience is better.

Embodiment 3

As shown in FIG. 3, the calling method provided by the embodiment of the present invention may include:

S301: The first terminal receives the indication information triggered by the user, where the indication information is used to instruct the first terminal to initiate a voice call to the second terminal by using the CS domain.

S302. When the first terminal is in the call restriction state, the first terminal prompts the user to start the notification function, where the notification function is a function of sending a message through the PS domain.

The state of the first terminal may be a restricted call state (ie, a state/arrears state in which a voice call cannot be performed through the CS domain), or a state of no arrears (ie, a voice call and voice answering may be performed through the CS domain).

Specifically, if the first terminal determines that the first terminal is in the restricted call state, the first terminal prompts the user to initiate a function of sending a message through the PS domain. The call restriction state in the embodiment of the present invention specifically includes: (1) a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain; and (2) a state in which voice call and voice call cannot be performed through the CS domain. .

When the first terminal determines that it is in the restricted call state, the first terminal may prompt the user to start the notification function according to a preset prompt manner. The preset manner of the prompting includes a vibration, a voice broadcast, a vibration, a floating icon, a display interface pop-up dialog box, and the like, which are not limited in the embodiment of the present invention.

Exemplarily, when user A calls user B, if user A’s mobile phone is In the call restriction state, the user's mobile phone display interface pops up a dialog box containing "Your mobile phone has been owed, whether to open the notification function", "ON" and "Cancel".

It should be noted that the notification function provided by the embodiment of the present invention may be a function implemented by an application built in the terminal itself, or may be a function implemented by an application provided by a third-party service provider installed by the user, which is not limited by the embodiment of the present invention. .

An application is a computer program that is developed to run on an operating system in order to complete a particular task or tasks. The application that implements the notification function in the embodiment of the present invention is an application compatible with the system on which the terminal is mounted. Exemplarily, if the operating system of the first terminal is an Android operating system, the format of the application built in the first terminal is an APK (Application Package File).

APK is an installation file format of an application on the Android operating system. An Android operating system compatible application code runs on a device with an Android operating system, must be compiled first, and then packaged into an Android operation. The files recognized by the system can be run, and the file format that can be recognized and run by the Android operating system is the APK. An APK file contains compiled code files (.dex files), file resources (Resources), file reads (Assets), certificates (Certificates), and manifest files (Manifest files).

In addition, the method for the first terminal to determine the state of the first terminal may be: after receiving the indication information triggered by the user, the first terminal queries the pre-stored state information, where the pre-stored state information is the first The terminal queries whether the flag bit of the card file indicates that the first terminal is in arrears state at a preset time. If the tag bit of the card file indicates that the first terminal is in arrears state, the first terminal stores the status information; or After receiving the indication information triggered by the user, the first terminal accesses the network side device according to the indication information. If the first terminal receives the rejection command sent by the network side device, the first terminal is in the restricted call state.

The card file is a file preset in the first terminal, and the flag bit of the card file may be a flag bit specified in the protocol standard, and may be used to indicate whether the first terminal is in arrears state. When the first terminal is in arrears state, the first terminal will receive The arrears instruction sent by the network side device, and the value of the flag bit of the card file is rewritten according to the arrears instruction. When the value of the flag bit of the card file is greater than a preset threshold, the flag bit of the card file indicates that the first terminal is in arrears state.

Specifically, the first terminal may poll the card file at a preset time to detect whether it is in arrears state. If the first terminal reads the card file, the flag bit indicates that the first terminal is in arrears, then the The first terminal records the current time in the card file as the time when the arrears occurred.

Exemplarily, the terminal A queries the card file every 10 minutes to check whether it is in arrears state. If the terminal A owes a fee at 12:00 on September 30, 2013, the tag bit of the card file of the terminal A indicates the terminal. A is in arrears state, terminal A inquires the card file at 12:05 on September 30, 2013, and terminal A records 12:05 on September 30, 2013 as the time when the arrears occurred.

The first terminal can determine whether the first terminal is in arrears state by querying the flag bit of the card file, and can also determine the arrears duration according to the time when the arrears occur and the current time. Therefore, the user can select through the first terminal. The operation of "Querying whether the fee is arrears/down" queries the status of the first terminal, so that the user can know at any time whether the first terminal is in the state of restricting the call.

S303. The first terminal receives a start command triggered by a user, where the start command is used to indicate a start notification function.

After the first terminal prompts the user to activate the notification function, the user can select an option to enable the notification function or select an option to cancel the notification function according to the prompt.

Specifically, if the user selects an option to enable the notification function, the first terminal receives a startup instruction for instructing the activation notification function while the user selects the option to enable the notification function.

Exemplarily, if the display interface of the first terminal displays a window containing "Your mobile phone has been owed, whether to open the notification function", "open" and "cancel", the user clicks the "open" option at the same time, A terminal can receive a start command.

S304. The first terminal generates a notification message according to the startup instruction.

After determining that the notification function of the first terminal is used, the user selects the startup of the first terminal. The option of the notification function, at this time, the first terminal can receive the startup instruction and generate a notification message according to the startup instruction.

The notification message includes first information indicating that the first terminal is in a call restriction state and second information for identifying the first terminal. The second information may be the phone number of the first terminal, or may be the IMSI of the first terminal, which is not limited in the embodiment of the present invention.

IMSI is a logo for distinguishing mobile users. It is stored in the SIM (Subscriber Identity Module) card. The total length is no more than 15 digits, and numbers from 0 to 9 are used. The structure is: MCC (Mobile Country Code) + MNC (Mobile Network Code) + MSIN (Mobile Subscriber Identification Number), where MCC is the country code of the mobile user. The three-digit number is composed; the MNC is a mobile network number consisting of two or three digits for identifying the mobile communication network to which the mobile subscriber belongs; the MSIN is a mobile subscriber identity for identifying the mobile in a mobile communication network. user.

S305. The first terminal sends a notification message to the second terminal by using the PS domain.

The format used by the first terminal to send the notification message may be any existing format for sending an instant message, or may add some necessary data options to the existing format for sending an instant message. The embodiment of the invention is not limited.

Specifically, when the first terminal is in a state in which the voice call cannot be performed through the CS domain and the voice receiving is performed through the CS domain, the notification message sent by the first terminal to the second terminal further includes: requesting the second terminal to call the first terminal. The third message.

Exemplarily, user A's mobile phone number is 12345678. When user A uses mobile phone to call user B, if user A's mobile phone is in a state where it can only answer the phone and cannot make a call, user A's mobile phone sends The content is "12345678 user has owed a fee, the user requested you to call back" notification message to user B.

When the first terminal is in a state in which the voice call and the voice call cannot be performed through the CS domain, after the first terminal determines that the state thereof meets the preset condition, the first terminal sends a notification message to the second terminal through the PS domain. The preset condition may be that the arrears of the first terminal is less than the first threshold, or that the amount of the arrears of the first terminal is less than the second threshold, which is not limited in the embodiment of the present invention.

S306. The second terminal determines whether the second information in the notification message is in the address record of the second terminal.

The address record of the second terminal is a list set by the user through a preset application in the second terminal, and the address book may include a correspondence between the name of the user and the phone number of the user, and the preset application includes Set the application for the address book function.

S307. If the second information is in the address book, the second terminal acquires the user identifier corresponding to the second information.

If the second terminal determines that the second information is in its address book, the second terminal acquires the user identifier corresponding to the second information, so that the second terminal displays the notification message including the user identifier.

S308. The second terminal displays a notification message that includes the user identifier.

If the second terminal acquires the user identifier corresponding to the second information, the second terminal displays a notification message including the user identifier.

Correspondingly, if the second terminal determines that the second information is not in its address book, the second terminal directly displays the received notification message.

The second terminal adopting the display manner to display the notification message can facilitate the user to recognize whether the notification message is a fraudulent message, thereby reducing the probability of occurrence of the telephone fraud.

Exemplarily, the notification message received by the terminal A includes at least the telephone number 12345678 of the terminal B, and the terminal A determines whether the telephone number 12345678 is in its address book, if the telephone number 12345678 is in the address book of the terminal A, and the telephone number If the user ID corresponding to 12345678 is User A, then Terminal A displays "User A requests you to call back"; if the telephone number 12345678 is not in the address book of Terminal A, Terminal A directly displays "12345678 User requests you to call back".

S309. The second terminal receives a user-triggered determination instruction for making a voice call to the first terminal.

When the second terminal includes the third information requesting the second terminal to call the first terminal in the received notification message, after the second terminal displays the notification message, the user can learn that the second terminal has other information. The user requests their callback. The user can select an option by using the second terminal to implement a language with the user of the first terminal. The voice communication can also abandon the voice communication with the user of the first terminal by the second terminal selection cancellation option.

Specifically, if the user agrees to call back to the user of the first terminal, the user receives the determination option by the second terminal, and the second terminal receives the determination instruction, where the determination instruction is used to indicate that the second terminal is the first The terminal makes a voice call.

S310. The second terminal initiates a voice call to the first terminal by using the CS domain according to the determining instruction.

The embodiment of the present invention provides a calling method. After the first terminal receives the indication information triggered by the user to indicate that the first terminal initiates a voice call to the second terminal by using the circuit switched CS domain, the first terminal is in a call restriction state. That is, when the first terminal is in a state in which the voice call cannot be performed through the CS domain, the first terminal sends a notification message to the second terminal by using the packet switched PS domain, where the notification message includes the first message indicating that the first terminal is in the call restriction state. information.

With the solution, when the first terminal is in the call restriction state, the first terminal receives the indication information that the first terminal initiates a voice call to the second terminal by using the CS domain, and the first terminal can directly pass the PS. The domain sends a notification message to the second terminal, so that the first terminal can quickly communicate with the second terminal, which solves the problem in the prior art that when the first terminal is in the call restriction state, the user only opens the data used in the first terminal. After the application of the service, the application can communicate with other terminals to cause more user operation steps and communication failures.

Embodiment 4

The embodiment of the present invention provides a first terminal 1, as shown in FIG. 4, including:

The receiving unit 10 is configured to receive indication information triggered by the user, where the indication information is used to instruct the first terminal to initiate a voice call to the second terminal by using a circuit switched CS domain.

The sending unit 11 is configured to send, by the packet-switched PS domain, a notification message to the second terminal when the first terminal is in a call restriction state, where the notification message is used to indicate that the first terminal is in a call restriction state. First information and second information for identifying the first terminal; the call restriction status is: unable to execute the language through the CS domain The status of the audio call.

Further, the call restriction state is specifically: a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain;

The notification message further includes third information for requesting the second terminal to call the terminal.

Further, the call restriction state is specifically a state in which a voice call and a voice call cannot be performed through the CS domain.

Further, the sending unit 11 is specifically configured to: when the first terminal is in a call restriction state, and the attendance duration of the first terminal is less than a first threshold, send to the second terminal by using a PS domain. Notification message.

Further, as shown in FIG. 5, the first terminal 1 further includes a prompting unit 12;

The prompting unit 12 is configured to prompt the user to start a notification function before the sending unit 11 sends a notification message to the second terminal through the PS domain, where the notification function is a function of sending a message through the PS domain.

Further, the receiving unit 10 is further configured to receive a start command triggered by a user, where the start command is used to instruct to start the notification function.

Further, as shown in FIG. 6, the first terminal 1 further includes a generating unit 13;

The generating unit 13 is configured to generate the notification message according to the startup instruction received by the receiving unit 10.

The embodiment of the invention provides a first terminal, which mainly comprises a receiving unit and a sending unit. After the first terminal receives the indication information that is triggered by the user to indicate that the first terminal initiates a voice call to the second terminal by using the circuit switched CS domain, the first terminal is in a call restriction state, that is, the first terminal is incapable of performing the CS domain. In the state of the voice call, the first terminal sends a notification message to the second terminal through the packet switched PS domain, where the notification message includes first information indicating that the first terminal is in a call restriction state.

With the solution, when the first terminal is in the call restriction state, the first terminal receives the indication information that the first terminal initiates a voice call to the second terminal by using the CS domain, and the first terminal can directly pass the PS. The domain sends a notification message to the second terminal, so that the first terminal can quickly communicate with the second terminal, and the solution is solved. In the prior art, when the first terminal is in the call restriction state, the user can use the application to communicate with other terminals only after the application of the data service in the first terminal is opened, and the user has more operation steps and the communication is not timely. problem.

The embodiment of the present invention provides a second terminal 2, as shown in FIG. 6, including:

The receiving unit 20 is configured to receive, by using a packet-switched PS domain, a notification message sent by the first terminal, and a receiving instruction that is triggered by the user to perform a voice call to the first terminal.

The display unit 21 is configured to display the notification message received by the receiving unit 20 on a screen.

The sending unit 22 is configured to initiate a voice call to the first terminal by using a circuit switched CS domain according to the determining instruction received by the receiving unit 20.

Further, the notification message includes: first information indicating that the first terminal is in a call restriction state, second information for identifying the first terminal, and requesting the second terminal to call The third information of the first terminal is described.

Further, as shown in FIG. 7, the second terminal 2 further includes a determining unit 23,

The determining unit 23 is configured to determine whether the second information in the notification message received by the receiving unit 20 is in an address record of the second terminal.

Further, as shown in FIG. 7, the second terminal 2 further includes an obtaining unit 24,

The obtaining unit 24 is configured to acquire a user identifier corresponding to the second information if the determining unit 23 determines that the second information is in the address book.

Further, the display unit 21 is specifically configured to display a notification message that includes the user identifier acquired by the acquiring unit 24.

The embodiment of the invention provides a second terminal, which mainly comprises a receiving unit, a display unit and a sending unit. The second terminal will receive the notification message sent by the first terminal on the screen through the PS domain, and the second terminal only needs to receive the user-triggered instruction for making a voice call to the first terminal, and can pass the CS domain. A voice call is initiated to the first terminal. In this way, even if the first terminal is in the call restriction state, the user can still use the first terminal to perform a voice call, and the user completes the voice communication with the first terminal by using the second terminal according to the notification message, and the user has fewer steps. , user experience is better it is good.

Embodiment 5

The embodiment of the present invention provides a first terminal. As shown in FIG. 8, the first terminal may include a transceiver 30, a processor 31, a memory 32, a display 33, and a system bus 34.

Transceiver 30, processor 31, memory 32 and display 33 are connected by system bus 34 and communicate with each other.

The transceiver 30 can be, for example, an RF (radio frequency) circuit. The transceiver 30 can be used to send and receive information, or to receive and transmit signals during a call. Generally, RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, an LNA (low noise amplifier), a duplexer, and the like. In addition, the RF circuit can communicate with the network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (global system of mobile communication), GPRS (general packet radio service), CDMA (code division multiple access) , code division multiple access), WCDMA (wideband code division multiple access), LTE (long term evolution), e-mail, SMS (short messaging service), and the like.

Processor 31 may be a single core or multi-core central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 32 may be a high speed RAM (Random Access Memory) memory or a non-volatile memory such as at least one disk memory.

Specifically, the transceiver 30 is configured to perform data communication with the outside.

Specifically, the processor 31 is configured to receive indication information triggered by the user, where the indication information is used to instruct the first terminal to initiate a voice call to the second terminal by using a circuit switched CS domain.

Specifically, the processor 31 is further configured to: when the first terminal is in a call restriction state, send, by using the transceiver 30, a notification message to the second terminal in a packet switched PS domain, where the notification message includes The first information indicating that the first terminal is in a call restriction state and the second information used to identify the first terminal; the call restriction state is a state in which a voice call cannot be performed through the CS domain.

Further, the call restriction state is specifically: a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain;

The notification message further includes third information for requesting the second terminal to call the terminal.

Further, the call restriction state is specifically a state in which a voice call and a voice call cannot be performed through the CS domain.

Further, the processor 31 is configured to: when the first terminal is in a call restriction state, send a notification message to the second terminal in the PS domain by using the transceiver 30, specifically when: When the terminal is in the call restriction state, and the elapsed time of the first terminal is less than the first threshold, the transceiver 30 sends a notification message to the second terminal in the PS domain.

Further, the processor 31 is further configured to prompt the user to start a notification function by using the display 33 before sending the notification message to the second terminal in the PS domain by using the transceiver 31, where the notification function is The function of sending messages in the PS domain.

Further, the processor 31 is further configured to receive a user-initiated startup instruction, where the startup instruction is used to initiate the notification function, and generate the notification message according to the received startup instruction.

The embodiment of the present invention provides a first terminal, where the first terminal receives the indication information that is triggered by the user to indicate that the first terminal initiates a voice call to the second terminal by using the circuit switched CS domain, and the first terminal is in the call restriction. When the first terminal is in a state in which the voice call cannot be performed through the CS domain, the first terminal sends a notification message to the second terminal by using the packet switched PS domain, where the notification message includes a message indicating that the first terminal is in the call restriction state. a message.

With the solution, when the first terminal is in a call restriction state, the first terminal is in Receiving the indication information that the first terminal initiates the voice call to the second terminal by using the CS domain, the first terminal may directly send the notification message to the second terminal through the PS domain, so that the first terminal can be quickly The second terminal performs communication, and solves the user operation in the prior art that when the first terminal is in the call restriction state, the user can only use the application to communicate with other terminals after opening the application that uses the data service in the first terminal. There are many steps and the communication is not timely.

The embodiment of the present invention provides a second terminal. As shown in FIG. 9, the second terminal may include a transceiver 40, a processor 41, a memory 42, a display 43, and a system bus 44, where

Transceiver 40, processor 41, memory 42 and display 43 are connected by system bus 44 and communicate with each other.

The transceiver 40 can be, for example, an RF (radio frequency) circuit. The transceiver 30 can be used to send and receive information, or to receive and transmit signals during a call. Generally, RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, an LNA (low noise amplifier), a duplexer, and the like. In addition, the RF circuit can communicate with the network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (global system of mobile communication), GPRS (general packet radio service), CDMA (code division multiple access) , code division multiple access), WCDMA (wideband code division multiple access), LTE (long term evolution), e-mail, SMS (short messaging service), and the like.

Processor 41 may be a single core or multi-core central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 42 can be a high speed RAM memory or a non-volatile memory such as at least one disk memory.

Specifically, the transceiver 40 is configured to perform data communication with the outside.

Specifically, the processor 41 is configured to pass through the transceiver 40 for The packet-switched PS domain receives the notification message sent by the first terminal, and is configured to receive a user-triggered determination instruction for making a voice call to the first terminal, and for performing circuit switching according to the received determination instruction The CS domain initiates a voice call to the first terminal.

Specifically, the display 43 is configured to display the notification message received by the processor 41 on a screen.

Further, the notification message includes: first information indicating that the first terminal is in a call restriction state, second information for identifying the first terminal, and requesting the second terminal to call The third information of the first terminal is described.

Specifically, the processor 41 is further configured to determine whether the second information in the received notification message is in an address record of the second terminal, and to determine the second if The information is in the address book, and the user identifier corresponding to the second information is acquired.

Further, the display 43 is specifically configured to display a notification message including the user identifier acquired by the processor 41.

The embodiment of the present invention provides a second terminal, where the second terminal receives the notification message sent by the first terminal through the PS domain and displays it on the screen thereof, and the second terminal only needs to trigger the user to trigger the first terminal. The voice call determination instruction can initiate a voice call to the first terminal through the CS domain. In this way, even if the first terminal is in the call restriction state, the user can still use the first terminal to perform a voice call, and the user completes the voice communication with the first terminal by using the second terminal according to the notification message, and the user has fewer steps. The user experience is better.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, The apparatus and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. Should be covered by the scope of protection of the present invention within. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims (18)

A calling method, comprising: The first terminal receives the indication information triggered by the user, where the indication information is used to indicate that the first terminal initiates a voice call to the second terminal by using the circuit switched CS domain; When the first terminal is in a call restriction state, the first terminal sends a notification message to the second terminal by using a packet switched PS domain, where the notification message includes a message indicating that the first terminal is in a call restriction state. First information and second information for identifying the first terminal; the call restriction state is a state in which a voice call cannot be performed through the CS domain. The method according to claim 1, wherein the call restriction state is specifically: a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain; The notification message further includes third information for requesting the second terminal to call the first terminal. The method according to claim 1, wherein the call restriction state is specifically a state in which a voice call and a voice call cannot be performed through the CS domain; When the first terminal is in the call restriction state, the first terminal sends a notification message to the second terminal by using the PS domain, including: When the first terminal is in a call restriction state, and the arrears duration of the first terminal is less than the first threshold, the first terminal sends a notification message to the second terminal by using the PS domain. The method according to any one of claims 1 to 3, wherein before the first terminal sends a notification message to the second terminal through the PS domain, the method further includes: The first terminal prompts the user to initiate a notification function, where the notification function is a function of sending a message through the PS domain; Receiving, by the first terminal, a start command triggered by a user, where the start command is used to instruct to start the notification function; The first terminal generates the notification message according to the startup instruction. A calling method, comprising: Receiving, by the second terminal, the notification message sent by the first terminal by using the packet switched PS domain; The second terminal displays the notification message on a screen; The second terminal receives a determination instruction triggered by the user for making a voice call to the first terminal; And the second terminal initiates a voice call to the first terminal by using a circuit switched CS domain according to the determining instruction. The method according to claim 5, wherein the notification message comprises: first information indicating that the first terminal is in a call restriction state, and second information for identifying the first terminal, and And third information for requesting the second terminal to call the first terminal; The second terminal displays the notification message on the screen, including: Determining, by the second terminal, whether the second information in the notification message is in an address record of the second terminal; If the second information is in the address book, the second terminal acquires a user identifier corresponding to the second information; The second terminal displays a notification message including the user identifier. A first terminal, comprising: a receiving unit, configured to receive indication information triggered by the user, where the indication information is used to indicate that the first terminal initiates a voice call to the second terminal by using a circuit switched CS domain; a sending unit, configured to send, by using a packet-switched PS domain, a notification message to the second terminal when the first terminal is in a call restriction state, where the notification message includes a message indicating that the first terminal is in a call restriction state. First information and second information for identifying the first terminal; the call restriction state is a state in which a voice call cannot be performed through the CS domain. The first terminal according to claim 7, wherein the call restriction state is specifically: a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain; The notification message further includes a request for requesting the second terminal to call the terminal Three information. The first terminal according to claim 7, wherein the call restriction state is specifically a state in which a voice call and a voice call cannot be performed through the CS domain; The sending unit is configured to send a notification message to the second terminal through the PS domain when the first terminal is in a call restriction state and the arrears duration of the first terminal is less than a first threshold. The first terminal according to any one of claims 7-9, wherein the first terminal further comprises a prompting unit; The prompting unit is configured to prompt the user to start a notification function before the sending unit sends a notification message to the second terminal by using the PS domain, where the notification function is a function of sending a message through the PS domain; The receiving unit is further configured to receive a start command triggered by a user, where the start command is used to instruct to start the notification function; The first terminal further includes a generating unit; The generating unit is configured to generate the notification message according to the startup instruction received by the receiving unit. A second terminal, comprising: a receiving unit, configured to receive, by using a packet switched PS domain, a notification message sent by the first terminal, and a receiving instruction for receiving a voice call to the first terminal triggered by the user; a display unit, configured to display, on a screen, the notification message received by the receiving unit; And a sending unit, configured to initiate a voice call to the first terminal by using a circuit switched CS domain according to the determining instruction received by the receiving unit. The second terminal according to claim 11, wherein the notification message includes: first information indicating that the first terminal is in a call restriction state, and is used to identify second information of the first terminal. And a third information for requesting the second terminal to call the first terminal; The second terminal further includes a determining unit; The determining unit is configured to determine whether the second information in the notification message received by the receiving unit is in an address record of the second terminal; The second terminal further includes an acquiring unit; An obtaining unit, configured to acquire a user identifier corresponding to the second information if the determining unit determines that the second information is in the address book; The display unit is specifically configured to display a notification message that includes the user identifier acquired by the acquiring unit. A first terminal, comprising: a transceiver for communicating data with the outside; a processor, configured to receive indication information triggered by the user, where the indication information is used to indicate that the first terminal initiates a voice call to the second terminal by using a circuit switched CS domain; The processor is further configured to: when the first terminal is in a call restriction state, send, by using the transceiver, a notification message to the second terminal in a packet switched PS domain, where the notification message includes The first terminal is in a call restriction state and the second information is used to identify the first terminal; the call restriction state is a state in which a voice call cannot be performed through the CS domain. The first terminal according to claim 13, wherein the call restriction state is specifically: a state in which a voice call cannot be performed through the CS domain, and a voice call can be performed through the CS domain; The notification message further includes third information for requesting the second terminal to call the terminal. The first terminal according to claim 13, wherein the call restriction state is specifically a state in which a voice call and a voice call cannot be performed through the CS domain; The processor is configured to: when the first terminal is in a call restriction state, send a notification message to the second terminal by using the transceiver in the PS domain, when the first terminal is in a call restriction state. a status, and when the arrears duration of the first terminal is less than a first threshold, the transceiver sends a notification message to the second terminal in the PS domain by using the transceiver. The first terminal according to any one of claims 13-15, wherein the first terminal further comprises a display; The processor is further configured to: after the sending, by the transceiver, the notification message to the second terminal in the PS domain, prompting the user to initiate a notification function by using the display, where the notification function is a function of sending a message through the PS domain. ; The processor is further configured to receive a startup command triggered by a user, where the startup instruction is used to instruct to start the notification function, and generate the notification message according to the received startup instruction. A second terminal, comprising: a transceiver for communicating data with the outside; a processor, configured to receive, by the transceiver, a notification message sent by the first terminal in a packet switched PS domain, and to receive a user-triggered determination instruction for making a voice call to the first terminal, and Receiving the determining instruction, and initiating a voice call to the first terminal by using a circuit switched CS domain; a display for displaying the notification message received by the processor on a screen. The second terminal according to claim 17, wherein the notification message includes: first information indicating that the first terminal is in a call restriction state, and is used to identify second information of the first terminal. And a third information for requesting the second terminal to call the first terminal; The processor is further configured to determine whether the second information in the received notification message is in an address book of the second terminal, and if the determining the second information is in the In the address book, acquiring a user identifier corresponding to the second information; The display is specifically configured to display a notification message that includes the user identifier acquired by the processor.

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