A method for implementing a private number video ringback tone service

Abstract

The application relates to a method for realizing a private number video ringback tone service. In the process of processing the private number call service, a private number video ringback tone platform is embedded, a call to the private number is initiated by a caller, a private number home I / S-CSCF triggers an INVITE message of a SIP protocol to the private number video ringback tone platform according to private number trigger information; the private number video ringback tone platform analyzes the triggered INVITE message, obtains private number information, and executes private number service logic to re-initiate call connection to a called party; after the called party terminal rings, the private number video ringback tone platform initiates a video ringback tone media negotiation carrying audio and video media streams to the caller side, and plays the video ringback tone to the caller; after the called party terminal is picked up, the platform stops playing the ringback tone and connects the call between the caller and the called party; without upgrading the existing network core network element, the caller can see the private number customized video ringback tone when calling any user.

Description

Technical Field

[0001] This invention relates to a method for implementing a privacy number video ringback tone service. Background Technology

[0002] In the mobile internet era, mobile phone numbers are increasingly used as a means of identification in transactions. Unlike in the past, when mobile phone numbers were only circulated among friends, colleagues, and acquaintances, in e-commerce, mobile phone numbers need to be provided to complete strangers. Users have no knowledge of these strangers who have access to their phone numbers and are therefore hesitant to expose their numbers. Privacy number services have emerged to address this need. These services primarily add an intermediary number, similar to a traditional mobile phone number, between the two communicating parties, isolating them and allowing voice and SMS communication via this intermediary number. As privacy number services are rapidly adopted in logistics, transportation, food delivery, and other industries, these companies need to provide their customers with multi-dimensional value-added services based on privacy numbers, including video ringback tones. Furthermore, current privacy number service systems mostly use 2G and 3G network technologies. With the rapid popularization of VoLTE after 4G, video ringback tones need to be migrated to the IMS network to provide voice and video services. Summary of the Invention

[0003] To address the problems existing in the prior art, the purpose of this invention is to provide a technical solution for implementing a privacy number video ringback tone service, which enables the original caller to see a customized video ringback tone from the privacy number when dialing a privacy number and the privacy number initiates the call to the actual called party.

[0004] The method for implementing a privacy number video ringback tone service is characterized by: embedding a privacy number video ringback tone platform with call connection function during the processing of privacy number call-related services. This platform can block the called party's ringback tone and play a customized privacy number video ringback tone to the calling party. Calls with the privacy number as the called party are triggered to the privacy number video ringback tone platform according to the subscription information. The privacy number video ringback tone platform then plays the video ringback tone and re-initiates a call to the real called party.

[0005] The method for implementing a privacy-focused video ringback tone service is characterized by the following steps: Step 1) The caller initiates a call to the privacy number. The privacy number's home I / S-CSCF initiates a SIP protocol "INVITE" message to the privacy number's video ringback tone platform based on the privacy number's trigger information. Step 2) The privacy number video ringback tone platform analyzes the triggered INVITE message to obtain the privacy number information; Step 3) The privacy number video ringback tone platform executes the privacy number business logic and re-initiates the call to connect to the called party; Step 4) The called user returns a temporary "180 RINGING" response message in the SIP protocol, indicating that the called user's terminal is ringing; Step 5) The privacy number video ringback tone platform analyzes whether this privacy number has activated the video ringback tone service. If not, proceed directly to step 6). If yes, block the ringback tone coming from the back office, and query the local database based on the privacy number obtained in step 2) to obtain the video ringback tone content to be played. After initiating video ringback tone media negotiation with the calling party carrying audio and video media streams, play the video ringback tone for the calling party. Step 6) When the Privacy Number Video Ringback Tone Platform receives the "200 OK" response message to INVITE from the called user's home I / S-CSCF in the SIP protocol, it indicates that after the called user's terminal goes off-hook, the Privacy Number Video Ringback Tone Platform stops playing the ringback tone and connects the call path between the calling and called parties.

[0006] The method for implementing privacy number video ringback tone service is characterized in that, in step 3), during the process of re-initiating the call and connecting to the called party, the privacy number calling process is triggered by simulating P-CSCF technology. The privacy number video ringback tone platform determines whether the called party is a user from another network. If so, the call is connected to the IBCF of the province where the called party belongs. If not, the call is connected to the I-CSCF of the province where the called party belongs, and finally the call is connected to the called party.

[0007] The method for implementing a privacy account video ringback tone service is characterized in that the privacy account video ringback tone platform includes the following modules: 1) Business Control and Processing Module: The business control and processing module runs in the business control and processing server and is responsible for the business control of the privacy number video ringback tone platform, including the implementation of privacy number business logic, the action control of playing video ringback tones, and the control of connecting the caller and the called party. 2) Media Signaling Integrated Access Module: This module consists of a separate integrated switching signaling platform. It implements the SIP protocol stack for parsing and encoding SIP messages. It connects to IMS network elements via the SIP protocol, is responsible for accessing signaling messages from outside the platform and forwarding them to the service control and processing module. It is also responsible for accessing and forwarding the interactive signaling between the service control and processing module and core network elements outside the platform. Furthermore, it is responsible for establishing a connection with the calling party to play video ringback tones and connecting the call path between the calling and called parties after the ringback tone playback is complete. 3) Database service module: The database service module runs on the database server and is responsible for managing privacy number user data in the database and interacting with the business control and processing module. 4) User account opening / closing module: This module runs on the user account opening / closing server and is responsible for user account opening / closing requests for privacy number services and video ringback tones. It also stores privacy number user data in the database service module. 5) Operation and maintenance module: The operation and maintenance module runs on the operation and maintenance server and completes the operation and maintenance functions of the platform.

[0008] The method for implementing a privacy number video ringback tone service is characterized in that the media signaling integrated access module accesses the privacy number home I / S-CSCF to initiate a SIP protocol "INVITE" message and forwards it to the service control and processing module.

[0009] The method for implementing a privacy number video ringback tone service is characterized in that the service control and processing module analyzes the triggered INVITE message to obtain privacy number information; the service control and processing module then re-initiates the call and connects the caller to the called party through the media signaling integrated access module.

[0010] The method for implementing a privacy number video ringback tone service is characterized in that the media signaling integrated access module receives a "180 RINGING" temporary response message returned by the called user in the SIP protocol, and hands it over to the service control and processing module for processing. The service control and processing module initiates video ringback tone media negotiation with the calling side through the media signaling integrated access module, carrying audio and video media streams, and then plays the video ringback tone to the calling party.

[0011] The method for implementing a privacy number video ringback tone service is characterized in that the service control and processing module controls the media signaling integrated access module to stop playing the video ringback tone and connect the call path after the user answers.

[0012] The method for implementing a privacy number video ringback tone service is characterized in that the privacy number video ringback tone platform can play a customized video ringback tone for the privacy number to the caller, has a call connection function, can block the ringback tone when the called party rings, can stop playing the video ringback tone when the called party answers, and can connect the call channels of the caller and the called party.

[0013] The method for implementing a privacy number video ringback tone service is characterized in that the privacy number video ringback tone platform uses simulated P-CSCF technology to trigger the privacy number calling process. During the process of re-initiating a call to the called party, the privacy number video ringback tone platform determines whether the called party and the privacy number video ringback tone platform are on different networks. If they are, the privacy number video ringback tone platform obtains the IBCF IP address and routes the call to the IBCF network element on the same network side as the privacy number video ringback tone platform in the province where the called number belongs, and finally calls the called party. If they are not, the privacy number video ringback tone platform addresses to the I-CSCF of the called party's province, or forwards the call to the BGCF or MGCF network element in the province where the privacy number video ringback tone platform is located, and finally calls the called party.

[0014] The privacy number video ringback tone platform of the present invention can play customized video ringback tones for privacy numbers to the caller, has call connection function, can block the ringback tone of the called party when the ringing is on, can stop playing video ringback tones when the called party answers, and can connect the call channels of the caller and the called party.

[0015] This invention does not affect the services of the caller on the privacy number, and conveniently solves problems such as IMS access without upgrading existing network elements. It can be applied to communication networks such as 4G and 5G.

[0016] This invention enables callers to see a customized video ringback tone from a privacy number without upgrading existing core network elements, and it does not conflict with subsequent calls from the privacy number, nor does it have compatibility or resource limitations.

[0017] This invention enables callers to see customized video ringback tones from a privacy number, resolving issues such as resource conflicts and compatibility with privacy number caller ID processes. It greatly expands the scope of use and application scenarios, making it possible to provide callers with various informational video ringback tones. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal logic and connections of the present invention; Figure 2 This is a schematic diagram of the message flow for the video ringback tone service that dials the privacy number of a user on another network, as described in this invention. Figure 3 This is a schematic diagram illustrating the message flow of a user applying for a video ringback tone service and then calling other users on the same network. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings: The implementation process of this invention is as follows: The calling party initiates a call to a privacy number. The privacy number's home I / S-CSCF, based on the privacy number's trigger information, sends an "INVITE" message via SIP protocol to the privacy number's video ringback tone platform. The privacy number's video ringback tone platform analyzes the incoming INVITE message to obtain the privacy number information and executes the privacy number's business logic, re-initiating the call to connect to the called party. After the called party's terminal rings, the privacy number's video ringback tone platform initiates video ringback tone media negotiation with the calling party, carrying audio and video media streams, and then plays the video ringback tone for the calling party. After the called party's terminal answers the phone, the platform stops playing the ringback tone and simultaneously connects the call path between the calling and called parties. This invention is applicable to users with privacy numbers, secondary numbers, multiple numbers on one device, intermediate numbers, etc.

[0020] This invention embeds a privacy number video ringback tone platform with call connection functionality into the processing of privacy number call-related services. This platform can block the called party's ringback tone and play a customized privacy number video ringback tone for the calling party. The call initiated by the calling party to the called user is connected to the privacy number video ringback tone platform, which then executes the playback of the video ringback tone and the processing of privacy number service logic. It includes the following steps: Step 1) The caller initiates a call to the privacy number. The privacy number's home I / S-CSCF initiates a SIP protocol "INVITE" message to the privacy number's video ringback tone platform based on the privacy number's trigger information. Step 2) The privacy number video ringback tone platform analyzes the triggered INVITE message, obtains the privacy number information, and sends a response message to the privacy number's home I / S-CSCF. Step 3) The privacy number video ringback tone platform executes the privacy number business logic and re-initiates the call to connect to the called party; Step 4) The called user returns a temporary "180 RINGING" response message in the SIP protocol, indicating that the called user's terminal is ringing; Step 5) The privacy number video ringback tone platform analyzes whether this privacy number has activated the video ringback tone service. If not, proceed directly to step 6). If yes, the ringback tone coming from the back office is blocked, and the local database can be queried based on the privacy number obtained in step 2) to obtain the video ringback tone content to be played. After initiating video ringback tone media negotiation with the calling party carrying audio and video media streams, the video ringback tone is played for the calling party. Step 6) When the Privacy Number Video Ringback Tone Platform receives the "200 OK" response message to INVITE from the called user's home I / S-CSCF in the SIP protocol, it indicates that after the called user's terminal goes off-hook, the Privacy Number Video Ringback Tone Platform stops playing the ringback tone and connects the call path between the calling and called parties.

[0021] The privacy number video ringback tone platform can play customized video ringback tones for the caller, has call connection function, can block the called party's ringback tone when the called party rings, and can stop playing video ringback tones when the called party answers. It is also a device that connects the caller's and called party's call paths.

[0022] Furthermore, to address issues such as limited IMS resources and compatibility in subsequent calls caused by the privacy number video ringback tone platform not being connected to the SBC network element, or the SBC network element requiring authentication of the privacy number, the privacy number video ringback tone platform employs simulated P-CSCF technology to trigger the privacy number calling process. In step 3), during the process of re-initiating the call to the called party, the privacy number video ringback tone platform determines whether the called party and the privacy number video ringback tone platform are on different networks. If so, the platform obtains the IBCF IP address and routes the call to the IBCF network element on the same network side as the privacy number video ringback tone platform in the called number's home province, ultimately reaching the called party. If not, the privacy number video ringback tone platform addresses the I-CSCF of the called party's home province, or forwards the call to the BGCF or MGCF network element in the province where the privacy number video ringback tone platform is located, ultimately reaching the called party. This does not affect the privacy number calling party's service and conveniently solves IMS access issues without upgrading existing network elements.

[0023] Using the method of this invention, it is possible to enable callers to see a customized video ringback tone for the privacy number without upgrading the existing core network elements, and without conflicting with subsequent calls from the privacy number, and without compatibility or resource limitations.

[0024] The privacy-focused video ringback tone platform of the present invention includes the following modules: 1) Business Control and Processing Module: The business control and processing module runs in the business control and processing server and is responsible for the business control of the privacy number video ringback tone platform, including the implementation of privacy number business logic, the action control of playing video ringback tones, and the control of connecting the caller and the called party. 2) Media Signaling Integrated Access Module: This module consists of a separate integrated switching signaling platform. It implements the SIP protocol stack for parsing and encoding SIP messages. It connects to IMS network elements via the SIP protocol, is responsible for accessing signaling messages from outside the platform and forwarding them to the service control and processing module. It is also responsible for accessing and forwarding the interactive signaling between the service control and processing module and core network elements outside the platform. Furthermore, it is responsible for establishing a connection with the calling party to play video ringback tones and connecting the call path between the calling and called parties after the ringback tone playback is complete. 3) Database service module: The database service module runs on the database server and is responsible for managing privacy number user data in the database and interacting with the business control and processing module. 4) User account opening / closing module: This module runs on the user account opening / closing server and is responsible for user account opening / closing requests for privacy number services and video ringback tones. It also stores privacy number user data in the database service module. 5) Operation and maintenance module: The operation and maintenance module runs on the operation and maintenance server and performs the operation and maintenance functions of the equipment. The above modules interact and interface with the internal TCP / IP network of the Privacy Number video ringback tone platform.

[0025] In the aforementioned privacy-focused video ringback tone platform, the INVITE message initiated in step 1) is accessed by the media signaling integrated access module and forwarded to the business control and processing module; In step 2), the service control and processing module analyzes the INVITE message to obtain the privacy number information and the calling number information; in step 3), the service control and processing module re-initiates the call connection to the called party through the media signaling integration access module. In step 4), the media signaling integrated access module receives the 180RINGING temporary response message returned by the called user's home I / S-CSCF and hands it over to the service control and processing module for processing. In step 5), the service control and processing module blocks the ringback tone coming from the exchange through the media signaling integrated access module and connects the calling party. The service control and processing module queries the database service module to obtain the corresponding video ringback tone information and hands it over to the media signaling integrated access module to play the video ringback tone to the calling party. In step 6), the business control and processing module controls the media signaling integrated access module to stop playing video ringback tones and connect the call path after the user answers.

[0026] By employing the method of this invention, any user who makes a call can see a customized video ringback tone for the privacy number. This solves problems such as resource conflicts and compatibility with the privacy number's caller flow, greatly expanding the scope of use and application scenarios, and making it possible to provide callers with various informational video ringback tones.

[0027] The server system does not have any special software or hardware requirements, and the Privacy Number video ringback tone platform can run on any of the current mainstream operating systems.

[0028] Each of the above modules resides on its respective server or platform in the form of firmware with corresponding software or in software storage, and interacts through the internal TCP / IP network of the Privacy Number Video Ringback Tone Platform. Each of these modules can also be decomposed into several sub-modules based on their functionality, and recombined according to the actual deployment of the existing network, residing on the server and Privacy Number Video Ringback Tone Platform constituting this device; alternatively, some modules or sub-modules may reside on the aforementioned server or platform, while others may be loaded into existing network devices.

[0029] like Figure 2 The diagram illustrates the cross-network message flow for the Privacy Number video ringback tone service. In this flow, it is assumed that the called party and the platform deployment belong to different operators. The Privacy Number video ringback tone platform re-initiates the call connection to the called party using a P-CSCF method, as follows: 1. The caller initiates a call to the privacy number. Based on the privacy number's trigger information, the I / S-CSCF (Internet Service Controller for Privacy Numbers) sends a SIP protocol "INVITE" message to the media signaling integrated access module of the privacy number's video ringback tone platform; that is... Figure 2 The process referred to by number 1; 2. The business control and processing module of the privacy number video ringback tone platform analyzes the triggered INVITE message, obtains the privacy number information, and sends a response message to the privacy number's home I / S-CSCF; that is... Figure 2 The process referred to by number 2; 3. The business control and processing module of the privacy number video ringback tone platform executes the privacy number business logic, obtains the called number according to the operation instructions, and queries the ENUM through the media signaling integrated access module based on the called number; that is... Figure 2 The process referred to by number 3; 4. ENUM returns a SIP URI in the appropriate format based on the called number, which includes the IBCF domain name of the local network but other provinces; that is... Figure 2 The process indicated by number 4; 5. The privacy number video ringback tone platform service control and processing module obtains the IBCF IP address by querying the DNS through the media signaling integrated access module based on the returned IBCF domain name; that is... Figure 2 The process indicated by number 5; 6. DNS returns the IBCF's IP address; that is... Figure 2 The process referred to by number 6; 7. The business control and processing module of the privacy number video ringback tone platform routes the call to the called party's home province IBCF through the media signaling integrated access module. The IBCF, based on the called party's SIP URI domain name in the call request, routes the call to the corresponding peer operator (China Telecom, China Unicom) IBCF, simultaneously transforming the Request URI into a Tel URI, and ultimately connecting the caller to the called party; that is... Figure 2 The process indicated by number 7; 8. The privacy number video ringback tone platform receives a temporary "180 RINGING" SIP protocol response message from the called party via the media signaling integrated access module, indicating that the called user's terminal is ringing; that is... Figure 2 The process indicated by number 8; 9. The privacy account video ringback tone platform analyzes whether this privacy account has activated the video ringback tone service. If so, it blocks the ringback tone coming from the back office, queries the local database to obtain the video ringback tone content to be played, and initiates video ringback tone media negotiation with the calling party through the media signaling integrated access module, carrying audio and video media streams, before playing the video ringback tone to the calling party; that is... Figure 2 The process indicated by number 9; 10. When the privacy number video ringback tone platform receives a "200 OK" response message to INVITE from the called user's home I / S-CSCF (In-Simple Communication Center), it indicates that after the called user's terminal goes off-hook, the media signaling integrated access module stops playing the ringback tone and simultaneously connects the call path between the calling and called parties; that is... Figure 2 The process referred to by number 10.

[0030] like Figure 3 As shown, this is the message flow for a privacy account user to call other users on the same network after applying for the video ringback tone service. At this time, the privacy account video ringback tone platform does not need to continue the call to the IBCF network element. The process is as follows: 1. The business control and processing module of the privacy number video ringback tone platform executes the privacy number business logic, obtains the called number according to the operation instructions, and queries the ENUM through the media signaling integrated access module based on the called number; that is, the process indicated by label 1-1 in the figure; 2. If the called number is a local number, ENUM will convert the called number's Tel URI to a SIP URI and return it. If the Tel URI resolution fails when querying ENUM / DNS, it will return the local BGCF or MGCF. Figure 3 The process referred to by the standard number 2-1; 3. The privacy number video ringback tone platform business control and processing module queries the ENUM / DNS based on the user domain name in the returned SIP URI to locate the called party's home province I-CSCF; that is... Figure 3 The process referred to by the standard number 3-1; 4. DNS returns the IP address of the I-CSCF; that is... Figure 3 The process referred to by the standard number 4-1; 5. The business control and processing module of the privacy number video ringback tone platform routes the call to the called party's home province I-CSCF through the media signaling integrated access module, and ultimately calls the called party; that is... Figure 3 The process referred to by reference number 5-1.

[0031] Terminology Explanation IMS: IP Multimedia Subsystem; S-CSCF: Server-Call Session Control Function; I-CSCF: Interrogating-Call Session Control Function TrGW: Transition Gateway; IBCF: Interconnection Border Control Function; MGCF: Media Gateway Control Function; BGCF: Breakout Gateway Call Function; P-CSCF: Proxy Call Session Control Function; ENUM: E.164 Number URI Mapping; DNS: Domain Name Server; SBC: Session border control; SIP: Session Initiation Protocol; URI: Uniform Resource Identifier; RTP: Real-time Transport Protocol.

Claims

1. A method for implementing a privacy-enabled video ringback tone service, characterized in that: In the process of handling privacy number call-related services, a privacy number video ringback tone platform with call connection function is embedded, which can block the called party's ringback tone and play the privacy number's customized video ringback tone to the caller. Calls with the privacy number as the called party are triggered to the privacy number video ringback tone platform according to the subscription information. The privacy number video ringback tone platform executes the playback of the video ringback tone and re-initiates the call to the real called party. Specifically, the following steps are included: Step 1) The caller initiates a call to the privacy number. The privacy number's home I / S-CSCF, based on the privacy number's trigger information, initiates a SIP protocol "INVITE" message to the privacy number's video ringback tone platform. Step 2) The privacy number video ringback tone platform analyzes the triggered INVITE message to obtain the privacy number information; Step 3) The privacy number video ringback tone platform executes the privacy number business logic and re-initiates the call to connect to the called party; Step 4) The called user returns a temporary "180 RINGING" response message in the SIP protocol, indicating that the called user's terminal is ringing; Step 5) The privacy number video ringback tone platform analyzes whether this privacy number has activated the video ringback tone service. If not, proceed directly to step 6). If yes, block the ringback tone coming from the back office, and query the local database based on the privacy number obtained in step 2) to obtain the video ringback tone content to be played. After initiating video ringback tone media negotiation with the calling party carrying audio and video media streams, play the video ringback tone for the calling party. Step 6) When the Privacy Number video ringback tone platform receives the "200 OK" response message to INVITE from the called user's home I / S-CSCF, it indicates that after the called user's terminal goes off-hook, the Privacy Number video ringback tone platform stops playing the ringback tone and connects the call path between the calling and called parties. The privacy number video ringback tone platform uses simulated P-CSCF technology to trigger the privacy number calling process. During the process of re-initiating the call to the called party, the privacy number video ringback tone platform determines whether the called party and the privacy number video ringback tone platform are on different networks. If they are, the privacy number video ringback tone platform obtains the IBCF IP address and routes the call to the IBCF network element on the same network side as the privacy number video ringback tone platform in the province where the called number belongs, and finally calls the called party. If they are not, the privacy number video ringback tone platform addresses to the I-CSCF of the called party's province, or forwards the call to the BGCF or MGCF network element in the province where the privacy number video ringback tone platform is located, and finally calls the called party.

2. The method for implementing a privacy number video ringback tone service according to claim 1, characterized in that... The privacy-focused video ringback tone platform includes the following modules: 1) Business Control and Processing Module: The business control and processing module runs in the business control and processing server and is responsible for the business control of the privacy number video ringback tone platform, including the implementation of privacy number business logic, the action control of playing video ringback tones, and the control of connecting the caller and the called party. 2) Media Signaling Integrated Access Module: This module consists of a separate integrated switching signaling platform. It implements the SIP protocol stack for parsing and encoding SIP messages. It connects to IMS network elements via the SIP protocol, is responsible for accessing signaling messages from outside the platform and forwarding them to the service control and processing module. It is also responsible for accessing and forwarding the interactive signaling between the service control and processing module and core network elements outside the platform. Furthermore, it is responsible for establishing a connection with the calling party to play video ringback tones and connecting the call path between the calling and called parties after the ringback tone playback is complete. 3) Database service module: The database service module runs on the database server and is responsible for managing privacy number user data in the database and interacting with the business control and processing module. 4) User account opening / closing module: This module runs on the user account opening / closing server and is responsible for user account opening / closing requests for the privacy number service and video ringback tones. It also stores privacy number user data in the database service module. 5) Operation and maintenance module: The operation and maintenance module runs on the operation and maintenance server and completes the operation and maintenance functions of the platform.

3. The method for implementing a privacy number video ringback tone service according to claim 2, characterized in that... The media signaling integrated access module receives the privacy number home I / S-CSCF and initiates the SIP protocol "INVITE" message, and forwards it to the service control and processing module.

4. The method for implementing a privacy number video ringback tone service according to claim 2, characterized in that... The service control and processing module analyzes the triggered INVITE message to obtain the privacy number information; the service control and processing module then re-initiates the call and connects it to the called party through the media signaling integrated access module.

5. A method for implementing a privacy number video ringback tone service according to claim 2, characterized in that... The media signaling integrated access module receives the "180 RINGING" temporary response message returned by the called user in the SIP protocol and hands it over to the service control and processing module for processing. The service control and processing module initiates video ringback tone media negotiation with the calling side through the media signaling integrated access module, carrying audio and video media streams, and then plays the video ringback tone to the calling party.

6. The method for implementing a privacy number video ringback tone service according to claim 2, characterized in that... The service control and processing module controls the media signaling integrated access module to stop playing video ringback tones and connect the call path after the user answers.

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