WO2007022674A1 - Procédé de mise en place d'un service de coloration de rappel vocal - Google Patents

Procédé de mise en place d'un service de coloration de rappel vocal Download PDF

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Publication number
WO2007022674A1
WO2007022674A1 PCT/CN2006/001053 CN2006001053W WO2007022674A1 WO 2007022674 A1 WO2007022674 A1 WO 2007022674A1 CN 2006001053 W CN2006001053 W CN 2006001053W WO 2007022674 A1 WO2007022674 A1 WO 2007022674A1
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WO
WIPO (PCT)
Prior art keywords
calling
user
service
crbt
switch
Prior art date
Application number
PCT/CN2006/001053
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English (en)
Chinese (zh)
Inventor
Hualin Luo
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007022674A1 publication Critical patent/WO2007022674A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42017—Customized ring-back tones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42025—Calling or Called party identification service
    • H04M3/42034—Calling party identification service
    • H04M3/42059—Making use of the calling party identifier
    • H04M3/42068—Making use of the calling party identifier where the identifier is used to access a profile

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for implementing a color ring back tone service. Background of the invention
  • a color ring back tone service has emerged, which is also called a ring back tone service.
  • the user's personalized ring tone is used instead of the traditional ring back tone, so that the user can no longer hear the traditional "beep" sound during the communication process, but can hear the customized personalized ring tone. Meet the individual needs of users.
  • the called user is usually subscribed to the CRBT service user, and the corresponding CRBT is customized.
  • the CRBT playback device plays to the calling user.
  • a pre-customized CRBT is called to implement the CRBT service.
  • the calling user can only passively listen to the CRBT, and cannot customize the CRBT according to its needs and listen during the call, thereby making The personalization needs of the calling user cannot be met.
  • the main object of the present invention is to provide a method for implementing a color ring back tone service, which can customize a color ring back tone according to the needs of the calling user, and when the calling user calls the called user, The calling user plays the color ring back tone.
  • the present invention provides a method for implementing a color ring back tone service, the method comprising:
  • Step A By modifying the configuration of the calling user: according to the data, the calling user is subscribed to the calling color ring service user;
  • Step B The calling party that subscribes to the color ring service of the calling party initiates a call, and the calling switch triggers the calling color ringing service according to the changed configuration data.
  • Step C Establish a connection between the calling switch and the called switch, and between the calling switch and the ring back tone system
  • Step D The CRBT system plays a pre-customized color ring back tone of the calling user to the calling user through the established connection between the calling switch and the CRBT system.
  • the step of modifying the calling user configuration data in the step A includes the following steps: Step A1: Modify the calling user subscription information stored in the HLR to which the calling user belongs.
  • the step of triggering the calling CRBT service according to the modified configuration data in the step B includes: Step B1: In the process of updating the location of the calling CRBT service user, according to the modified calling party subscription information in the HLR, Insert the calling CRBT service trigger code into the calling switch.
  • the step of modifying the calling subscriber subscription information in the step A1 is: adding the calling CRBT service triggering code to the subscription information.
  • Step B1 includes: the calling exchange sends a location update request to the HLR, and the HLR inserts the calling CRBT service trigger code into the calling switch.
  • the calling color ring service triggering code is used to indicate that the calling user is the calling user type of the calling ring tones service user, or is used to indicate that the calling user is the calling ring tones service user.
  • the step of modifying the calling subscriber subscription information in the step A is: adding a corresponding service indication to the calling subscriber subscription information, where the service indication corresponds to an extended cell corresponding to the calling CRBT service.
  • Step B1 includes: the calling switch sends a location update request to the HLR, and the HLR inserts the corresponding extended cell as the calling CRBT service trigger code into the calling switch according to the service indication in the calling user subscription information. in.
  • the step of modifying the calling user subscription information in step A1 is: adding O-CSI subscription data to the calling user subscription information.
  • Step B1 includes: Step B11: The calling switch sends a location update request to the HLR, and the HLR inserts the O-CSI subscription data into the calling switch, where the O-CSI subscription data is at least The address of the calling service control point SCP is included.
  • Step B12 The calling switch sends an initial detection point IDP message to the SCP according to the SCP address in the O-CSI subscription data, where the IDP message carries the corresponding color ring tone service.
  • Step B13 The SCP determines, according to the service key in the IDP message, that the calling user is the primary CRBT service user, and uses the CONNECT message as the first CRBT service prefix of the calling CRBT service trigger code. Issued to the calling switch
  • the step of modifying the configuration data of the calling user in the step A includes: configuring, in the fixed switch of the calling user, the fixed number of the calling user according to the user number of the calling user to be subscribed to the CRBT service user.
  • the calling subscriber data in the middle adds the corresponding calling ringtone service data.
  • the step of triggering the calling color ring back tone service according to the modified configuration data in the step B includes: the calling fixed switch queries the user data in the switch according to the calling number in the call, and according to the added call ring tone service added in the data. The data triggers the calling ring back tone service.
  • the step C includes: the calling switch constructs an IAM in the form of a CRBT service prefix + a calling number, and sends the IAM to the CRBT system. After receiving the IAM message, the CRBT system receives the IAM message. Returning the ACM to the calling switch to establish a connection between the CRBT system and the calling switch; and the calling switch sends an IAM message to the called switch, and the called switch returns the ACM message to the calling switch after receiving the message. Establish a connection between the calling switch and the called switch.
  • the step of playing the color ring back tone by the CRBT system to the calling user in step D includes: the CRBT system plays a fixed color ring back tone pre-customized by the calling user to the calling user according to the calling number; or, the CRBT The system selects a color ring back tone from a plurality of color ring back tones customized by the calling user according to the calling number, and plays the same to the calling user; or, the ring back tone system uses the ordinary ring back tone as the calling number.
  • the color ring back tone is played to the calling user; or, the ring back tone system determines the color ring back tone to be played according to the calling number and the called number, and plays to the calling user.
  • the method further includes: the called user picks up the answer, the CRBT system stops playing the color ring back tone to the calling user, and the calling user and the called user utilize the established connection between the calling switch and the called switch. , to achieve voice communication; and to release the connection established between the calling exchange and the ring back tone system.
  • the switch is a mobile switching center.
  • step B after the calling switch triggers the calling CRBT service, the method further includes: saving the record of the called CRBT service, and prohibiting the triggering of the called CRBT service according to the record.
  • the called user pre-signs the called ring back tone service; after step D, the caller further includes: the calling switch shields the color ring back tone pre-customized by the called user.
  • Step D further includes: when a call forwarding occurs during a subsequent call, the CRBT system continues to play the color ring back tone pre-customized by the calling user to the calling user.
  • the method further includes: when a connection failure or call waiting occurs during a subsequent call, the calling switch stops playing the calling ring tone, and releases the calling switch and the ring back tone system. The connection, and play the connection failure tone or call waiting tone to the calling user.
  • the present invention utilizes the calling color ring back tone service, which can enable the calling user to play its pre-customized color ring back tone during the call process, thereby satisfying the calling user's personalized demand for the ring tone, and can avoid the main
  • the user may not be able to adapt to the color ring back tone that is customized by the called user, which may be beneficial to the improvement of the color ring back tone service, so that the color ring back tone service can be recognized by more people, which is beneficial to the rapid and widespread promotion of the CRBT service.
  • FIG. 2 is a flowchart of implementing a calling color ring back tone service according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of implementing a calling color ring back tone service according to another embodiment of the present invention. Mode for carrying out the invention
  • the present invention is a method for implementing a color ring back tone service.
  • the method is for a calling user to subscribe to a CRBT service, and the corresponding CRBT is customized according to the needs of the calling user.
  • the calling user who subscribes to the CRBT service calls the called user.
  • the ring back tone system plays its pre-customized ring back tone for the calling user, thereby satisfying the personalized needs of the calling user.
  • Step 101 By modifying the configuration data of the calling user, the calling user is subscribed to the calling CRBT service user.
  • Step 102 The calling party that subscribes to the color ring service of the calling party initiates a call, and the calling switch triggers the calling color ring back tone service according to the modified configuration data.
  • Step 103 Establish a connection between the calling exchange and the called switch, and between the calling exchange and the CRBT system.
  • Step 104 The CRBT system plays the pre-customized CRBT of the calling user to the calling user through the connection between the established calling switch and the CRBT system to implement the calling CRBT service.
  • the color ring back tone can be played by the CRBT system to the calling user in the following manner: 1.
  • the CRBT system determines a fixed color ring back tone pre-customized by the calling user according to the calling number, to the calling party.
  • the user plays the fixed color ring back tone; 2.
  • the ring back tone system determines a plurality of color ring back tones customized by the calling user according to the calling number, randomly selects a color ring back tone, and plays to the calling user.
  • the ring back tone system plays the normal ring back tone as the color ring back tone to the calling user according to the calling number; 4.
  • the ring back tone system determines the color ring back tone to be played according to the calling number and the called number. And play to the calling user.
  • step 104 after the ring back tone is played in step 104, the following steps may be further performed:
  • Step 105 The called user picks up the phone and the ring back tone system stops playing the ring back tone to the calling user.
  • Step 106 The calling user and the called user use the established connection between the calling exchange and the called exchange to implement voice communication; and release the established connection between the calling exchange and the CRBT system.
  • Step 107 The calling user or the called user hangs up, releases the connection between the calling switch and the called switch, and ends the entire voice communication process.
  • steps 101 to 102 can be implemented as follows:
  • Step 10 Modify the calling subscriber subscription information stored in the home location register (HLR) to which the calling party belongs, and sign the calling subscriber to the calling CRBT service subscriber;
  • HLR home location register
  • Step 102 In the process of updating the location of the calling CRBT service user, insert the calling CRBT service trigger code into the calling switch according to the modified calling party subscription information in the HLR, and the calling switch according to the calling
  • the CRBT service trigger code triggers the calling CRBT service.
  • the steps 101 to 102 can be implemented as follows:
  • Step 101" In the fixed switch of the calling user, according to the user number of the calling user of the CRBT service subscriber, the calling subscriber data configured in the fixed switch is added to the calling subscriber ringtone for the calling subscriber. Service data, thereby signing the calling user to the calling ring back tone service user;
  • Step 102" When the user makes a call as the calling user, the calling fixed exchange of the calling user queries the user data in the switch according to the calling number in the call, and according to the data of the calling ring back ring service added in the data. Trigger the calling ring tones service.
  • the mobile communication network is taken as an example.
  • the invention is described, and the specific implementation of the fixed network is similar to that of the mobile communication network.
  • the signing of the calling CRBT user can be performed in different manners.
  • the triggering mode of the calling CRBT service is also different.
  • different triggering modes are combined, and the mobile communication network is taken as an example. The specific implementation of the above steps is explained:
  • the operator is provided with a customizable SS_CODE
  • the SS_CODE includes plmn__specificSSl ⁇ plmn_specificSS15. Therefore, in the present invention, the service code of the service provider's custom supplementary service code may be used to identify the calling party as the ring back ring service user, and the calling party subscribes to the ring back ring service.
  • the process is as follows: In the HLR to which the calling user belongs, a supplementary service code plmn_specificSSX for indicating the calling user's call ring tone service user is added to the subscription information of the calling user, thereby implementing the calling user.
  • the subscriber is subscribed to the CRBT service subscriber, where X is any natural number from 0 to 15, and the X can be selected according to the needs of the operator.
  • the extended cell can also be used to implement the calling party ring back tone service for the calling user.
  • a corresponding service indication is added for the subscription information of the calling user, and the service indication corresponds to the extended cell corresponding to the calling CRBT service.
  • the calling user is subscribed to the calling ring back tone service user.
  • the HLR can send the corresponding extended cell to the calling mobile switching center as the calling color ring service trigger code in the process of inserting the user data according to the service indication in the calling user subscription information.
  • MSC the calling MSC performs triggering of the calling CRBT service according to the extended cell.
  • Step 201 The calling MSC sends a location update (MAP_Update_Location) message to the HLR to which the calling user belongs, requesting location update.
  • MAP_Update_Location a location update
  • Step 202 The HLR returns a calling color ring service triggering code to the calling MSC by inserting a user data (MAP_Insert-Subscriber-Data) message.
  • MAP_Insert-Subscriber-Data user data
  • the calling user belongs to the calling user by using the SS-CODE method. Signing on the HLR, therefore, the calling party CRBT service trigger code returned by the HLR to the calling MSC is a supplementary service code.
  • Plmn specificSSX.
  • the calling party CRBT service trigger code returned by the HLR to the calling MSC is the category of the calling user (Category);
  • the extended cell is used for signing,
  • the trigger code of the calling CRBT service returned by the HLR to the calling MSC is the corresponding extended cell, and the calling MSC triggers the subsequent calling CRBT service according to the received calling user category or extended cell, and the implementation process and the implementation are implemented.
  • the subsequent descriptions in the examples are basically the same.
  • Step 203 to step 204 The calling MSC sends a Send Routing Information (SRI) message to the HLR, requesting to acquire the roaming number of the called user. After receiving the message, the HLR sends the called user roaming number to the SRI response message (SRI). — ACK ) is returned to the calling MSC.
  • SRI Send Routing Information
  • Step 205 The calling MSC sends an initial address message (IAM) to the called MSC according to the received roaming number of the called party, and establishes a connection between the calling MSC and the called MSC.
  • IAM initial address message
  • Step 206 The called MSC sends an address complete message (ACM) to the calling MSC, returns the current status of the called user to the calling MSC, and notifies the calling MSC that the connection with the called MSC is successful.
  • ACM address complete message
  • Step 207 The calling MSC triggers the calling CRBT service according to the supplementary service code plmn_specificSSX received in the process of inserting the user data, and constructs an IAM message in the form of the CRBT service prefix + the calling party number. .
  • the calling number of the constructed IAM message is the original calling number, and the called number is modified to the CRBT service prefix + calling party number form after the calling CRBT service is triggered, so that the middle of the call is in progress.
  • the office can analyze the modified called number to obtain the CRBT system to which the calling user belongs, and forward the IAM message to the CRBT system.
  • the IAM message also carries the original called number.
  • the calling MSC since the SS-CODE manner CRBT service triggering,: therefore, the calling MSC triggers the calling CRBT service according to the supplementary service code plmn_ S p ec insert subscriber data obtained during ifi c SSX;
  • the triggering is performed by using the user category
  • the calling MSC correspondingly
  • the calling party CRBT service is triggered according to the calling subscriber class obtained in the process of inserting the user data.
  • the calling MSC triggers the calling CRBT service according to the extended cell obtained in the process of inserting the user data.
  • the subsequent process after the triggering is basically consistent with the subsequent process described in this embodiment, and does not affect the implementation of the present invention.
  • Step 208 After receiving the IAM message sent by the calling MSC, the CRBT system returns an ACM message to the calling MSC to notify the connection between the calling MSC and the CRBT system that the connection is established successfully.
  • Step 209 The CRBT system searches for the CRBT pre-ordered by the calling subscriber according to the calling number carried in the IAM message, and plays the CRBT to the calling MSC by using an ANM message sent to the calling MSC.
  • step S206 receives the current state of the called user, and then performs step 207 to trigger the calling color ring service, thereby implementing the calling color ring service in a serial manner;
  • step 206 and steps 207 to 209 may also be performed in parallel to implement the calling color ring back tone service in a parallel manner, without affecting the implementation of the present invention.
  • Step 209 The caller CRBT service is implemented, and the integrity of the voice communication process is considered.
  • Step 210 The called user picks up the client, and the called MSC sends an A M message to the calling MSC to connect the voice channel between the calling MSC and the called MSC.
  • Step 211 to step 212 The calling MSC sends a release (REL) message to the CRBT system, requesting to release the connection between the calling MSC and the CRBT system. After receiving the message, the CRBT system stops playing the CRBT to the calling MSC, and The calling MSC returns a Release Complete (RLC) message, releasing the connection established between the calling MSC and the CRBT system.
  • REL release
  • RLC Release Complete
  • step 210 and step 211 to step 212 are sequentially performed. In this embodiment, step 210 and step 211 to step 212 may be simultaneously performed without affecting the implementation of the present invention.
  • Step 214 The calling user hangs up, and the calling MSC sends a REL message to the called MSC requesting to release the connection between the calling MSC and the called MSC.
  • Step 215 The called MSC returns an RLC message to the calling MSC, and releases the connection between the calling MSC and the called MSC.
  • the calling user hangs up as an example.
  • the called MSC sends a REL message to the calling MSC, and the calling MSC returns an RLC message to the called MSC.
  • the connection between the calling MSC and the called MSC is released without affecting the implementation of the present invention.
  • the customized information of the mobile network enhanced logic originated by the calling party is added to the subscription information of the calling user (Customized Application for Mobile network Enhanced) Logic, CAMEL (originating CAMEL Subscription Information, O-CSI) subscription data, the O-CSI subscription data is used to indicate that the calling user is the primary ring tone ring service user, and the service key corresponding to the calling color ring service user is used. Therefore, the calling party is subscribed to the calling ring back tone service user.
  • implementing the calling ring back tone service includes the following steps:
  • Step 301 The calling MSC sends a MAP_Update_Location message to the HLR to which the calling user belongs, requesting location update.
  • Step 302 The HLR returns the O-CSI subscription data (O-CSI Data), which is the trigger code of the calling CRBT service, to the calling MSC by using the MAPJnsert-Subscriber-Data message.
  • O-CSI subscription data includes at least the O-CSI subscription data.
  • SCP service control point
  • Step 303 to step 304 The calling MSC sends an initial detection point (IDP) message to the SCP according to the SCP address in the 0-CSI subscription data, where the IDP message carries a service key corresponding to the calling ring back tone service, SCP.
  • IDP initial detection point
  • SCP service key corresponding to the calling ring back tone service
  • the service key in the IDP message it is determined that the calling user is the primary ring tones service user, and the called number is modified into the first CRBT service prefix (prefixl) + the original called number (B number).
  • a CONNECT message is sent to the calling MSC by the modified called number.
  • the first CRBT service prefix is used as a calling CRBT service triggering code, so that the calling MSC can trigger the calling CRBT service according to the prefix.
  • Step 305 The calling MSC sends an IAM message to the called MSC according to the called number.
  • Step 307 The calling MSC triggers the calling CRBT service according to the first CRBT service prefix returned in the CONNECT message, and constructs an IAM message in the form of the second CRBT service prefix + the calling subscriber number.
  • the calling number of the constructed IAM message is the original calling number, and the called number is modified to the second CRBT service prefix + calling party number form after the calling CRBT service is triggered, so that the call is in progress.
  • the intermediate office can analyze the modified called number to obtain the CRBT system to which the calling user belongs, and forward the IAM message to the CRBT system, and further carry the original called number in the IAM message. .
  • Step 308 After receiving the IAM message sent by the calling MSC, the CRBT system returns an ACM message to the calling MSC to notify the connection between the calling MSC and the CRBT system that the connection is established successfully.
  • Step 309 The CRBT system searches for the CRBT pre-ordered by the calling user according to the calling number carried in the IAM message, and sends an ANM message to the calling MSC to the main message. Call the MSC to play the ring tones.
  • step 306 receives the current state of the called user, and then performs step 307 to trigger the calling color ring service, thereby implementing the calling color ring service in a serial manner;
  • step 306 and step 307 to step 309 may also be performed in parallel to implement the calling color ring back tone service in a parallel manner, without affecting the implementation of the present invention.
  • the embodiment further includes steps 310 to 315 for implementing the voice call and releasing the connection after the call ends.
  • the specific implementation of the steps is completely consistent with the specific implementations of the foregoing steps 210 to 215, and details are not described herein again.
  • a part of the called user has already signed the called CRBT service. Therefore, in the specific implementation process of the present invention, the called CRBT needs to be restricted, so that only the calling user is customized to play the calling user.
  • the ringtone the specific implementation includes at least the following two types:
  • the called CRBT service and the calling CRBT service are triggered by the calling MSC.
  • the calling MSC saves the information that the calling CRBT service has been triggered in the CRBT service triggering record, and the specific implementation manner of the recording may be A corresponding flag is set in the CRBT service triggering record to identify that the calling number has been triggered to trigger the calling CRBT service.
  • the calling MSC first triggers the CRBT service before triggering the called CRBT service.
  • the record determines whether the calling CRBT service has been triggered. If yes, the step of triggering the called CRBT service is not executed, that is, the called CRBT service is disabled. Otherwise, the called CRBT service is triggered and the corresponding process is executed.
  • the called CRBT service and the calling CRBT service are triggered by different MSCs.
  • the calling MSC determines whether the status of the called user is idle in the backward signaling. If yes, the calling switch shields the ring back tone set by the called user, and connects the forward connection of the calling party directly to the ring back tone system. Up, it is not connected to the called party, so that only the CRBT set by the calling user is played to the calling user, and the backward connection is isolated from the calling MSC.
  • the backward connection is a connection with a next switch that is connected to the call.
  • the calling CRBT service When the called CRBT service is triggered by the intelligent network, the calling CRBT service is triggered by the calling MSC, and the called MSC is triggered by the called MSC.
  • the calling MSC After the calling MSC performs the operation of triggering the calling color ring service in the above step 207 or 307, the calling SCP modifies the calling universal number or the calling user category to indicate that the calling user has triggered the calling color ring service, and the called MSC According to the modified calling party general number or the calling user category, it is determined that the calling color ring back tone service has been triggered, and the called color ring back ring service is no longer triggered, thereby avoiding the problem that the calling color ring back ring service and the called color ring back ring service conflict with each other;
  • the calling MSC modifies the calling user category to indicate the calling user.
  • the calling CRBT service has been triggered, and the switch or other device that triggers the called CRBT service determines that the calling CRBT service has been triggered according to the modified calling subscriber category, and the called CRBT service is no longer triggered, thereby avoiding the calling party.
  • the CRBT service and the called CRBT service conflict with each other.
  • connection failure and call waiting may occur.
  • the connection failure prompt tone and call waiting prompt tone need to be played to the calling user.
  • the calling MSC determines whether the connection is received.
  • the failure indication message or the call waiting indication message if yes, stops playing the calling CRBT, releases the connection between the calling MSC and the CRBT system, and plays the connection failure prompting call waiting tone to the calling user.
  • call forwarding may also occur.
  • the ring back tone system continues to play the caller customized ring tone to the calling user. Unless the subsequent call connection fails or a call waiting is required, the connection failure tone or call waiting tone is played to the calling user.
  • the switch is used as an example of the MSC used in the mobile communication process.
  • the fixed switch can also be used to implement the triggering and specific implementation of the called CRBT service, and The implementation of the invention is not affected.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

La présente invention se rapporte à un procédé de mise en place d'un service de coloration de rappel vocal (CRBT) qui comprend : l'enregistrement d'un abonné appelant, sous forme d'abonné à un service CRBT appelant en modifiant les données de configuration de l'abonné appelant ; étape B : l'abonné appelant qui s'est enregistré au service CRBT appelant est à l'origine de l'appel, le standard d'origine active un service CRBT appelant basé sur les données de configuration modifiées ; étape C : établissement d'une connexion entre le standard d'origine et le standard de fin et d'une connexion entre le standard d'origine et un système CRBT ; étape D : le système CRBT diffuse un CRBT à l'abonné appelant par la connexion établie entre le standard d'origine et le système CRBT, le CRBT diffusé est personnalisé au préalable par l'abonné appelant, moyennant quoi le service CRBT appelant est mis en place. Le procédé peut être respectivement mis en place dans un réseau de communication mobile et dans un réseau PSTN, de manière à répondre aux besoins personnels de l'abonné appelant, et peut éviter les incompréhensions probablement produites lorsque l'abonné appelant écoute le CRBT personnalisé par l'abonné appelé.
PCT/CN2006/001053 2005-08-23 2006-05-22 Procédé de mise en place d'un service de coloration de rappel vocal WO2007022674A1 (fr)

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CNB2005100933902A CN100536506C (zh) 2005-08-23 2005-08-23 一种彩色回铃音业务的实现方法
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