Abstract: In a method for providing an arbitrary sound, chosen by a called subscriber, as a ringback tone to a calling subscriber through a call-originating exchanger, the call-originating exchanger requests a trunk connection to a sound database server based on first information on whether or not to replace an RBT (RingBack Tone) and second information on a route to the sound database server that are received from a home location register (HLR), and provides a called subscriber identification for the sound database server. Then, the sound database server searches its database for a sound specified by the called, and provides the found sound for the caller instead of a conventional RBT via the originating exchanger connected through the requested trunk connection. The caller can hear a sound specified by the called instead of the conventional RBT.

Abstract: The present invention relates to apparatus and method of providing a history of failed calls for a subscriber who is targeted by the failed calls. In the present invention, when an exchanger can not route a call to a target subscriber it notifies an HLR (Home Location Register) of call routing failure. Then, the HLR sends information about the failed call, which includes the called and the calling number, and call originating time (or call receiving time), to a call control system. The call control system adds the received failed-call information to a calling history for the called number. Afterwards, when the called number is accessible the call control system provides a subscriber of the called number with the calling history, whereby the subscriber can know all of calling numbers that requested to make connections with him or her while he or she was not able to communicate with a mobile network.

Abstract: In a method of providing a caller with a pre-stored sound chosen by a called subscriber instead of a standard RBT (RingBack Tone), an HLR (Home Location Register), when a location request message is received from a call-originating exchanger, furnishes either the call-originating exchanger or a call-terminating exchanger with information on whether or not an RBT is to be replaced for the called terminal. The call-originating exchanger or the call-terminating exchanger then searches, while a trunk connection is established between the exchangers, for a sound code assigned to the called terminal based on the information furnished by the HLR, and provides the caller with a pre-stored RBT-replacing sound associated with the found sound code as an RBT.

Abstract: Disclosed is reply voice message transmission system and method thereof for transmitting a reply voice message showing whether a voice message from a sender is received by receiver's pressing a predetermined key in a mobile phone in the course of or after hearing the voice message from the sender, in case that a voice message from the sender is transmitted to a receiver. The method comprises the steps of: a) registering a voice message from a sender; b) discriminating whether the registered voice message is confirmed by a receiver, and then storing the message in a database sequentially, in case that the voice message is not confirmed by the receiver; c) recording a reply voice message from the receiver in the course of or after hearing the voice message from the sender, in case that the voice message is confirmed by the receiver in the step (b); and d) transmitting the recorded reply voice message to a sender's mobile phone.

Abstract: A method and apparatus for a called subscriber to send a sound for his own personal information as a ringback tone with a ringback tone replacing sound are disclosed. The method comprises the steps of: HLR providing MSC with the first information about whether a ringback tone is to be replaced or not and the second information for routing to sound providing means when a called terminal is registered in MSC; MSC requesting a call connection to the sound providing means based on the first and second information when the called terminal is called; and the sound providing means call-connecting to the calling terminal, and providing the calling terminal with a specific sound, wherein the specific sound is generated by combining a subscriber information sound, which can identify the called subscriber or can represent the subscriber's character, with the ringback tone replacing sound.

Abstract: The present invention discloses a method for tracking location of synchronous and asynchronous mobile communication network subscribers by using a dual stack home location register and a dual stack mobile positioning center. When the dual stack mobile positioning center externally receives a location tracking request for a subscriber, it requests reception subscriber information to the dual stack home location register, confirms whether the terminal is located in a synchronous or asynchronous mobile communication network by referring to the reception subscriber information from the dual stack home location register and network information, and requests location tracking for the terminal to the corresponding mobile communication network. Accordingly, location of the synchronous and asynchronous mobile communication network subscribers can be tracked in the network in which mobile communication networks using different protocols coexist.

Abstract: The present invention discloses a mobile location based service system and method. The mobile location based service system includes an application server for receiving a location based service request, and providing a location based service of a mobile station, and a location information providing system for discriminating location of the mobile station according to a kind of a location information service, and transmitting the location of the mobile station to the application server. A cell or GPS based location based service can be selectively provided according to a function of a mobile station of a mobile communication subscriber and a service request type. The GPS based location based service can be provided by an SMS delivery point to point message through an N07 signal network, and thus embodied during a voice call of the mobile station.

Abstract: The present invention relates to a method for providing an arbitrary sound chosen by a called subscriber for a caller instead of a conventional RBT (RingBack Tone).

Abstract: The present invention provides a caller with an arbitrary sound chosen by a called subscriber instead of a conventional RBT (RingBack Tone) without fails even in a flexible paging mode.

Abstract: The present invention relates to method for providing a calling subscriber with an arbitrary sound chosen by a called subscriber instead of a common ringback tone (RBT) with no progress tone. In this present invention, if a call is generated, a terminating exchanger starts paging of the called and simultaneously requests a trunk connection to a sound db server without waiting acknowledgement of the paging from the called based on the first information on whether or not to replace an RBT and the second information on a route to the sound db server that have been received from a home location register (HLR), and provides a called subscriber identification for the sound db server. Then, the sound db server searches its db for a sound specified by the called, and provides the found sound for the caller instead of a conventional RBT via the terminating exchanger connected through a trunk.

Abstract: The present invention relates to method and apparatus for providing an arbitrary sound chosen by a called subscriber instead of ringback tone to a calling subscriber. In this present invention, if a call is received, a terminating exchanger requests a trunk connection to a sound db server based on the first information on whether or not to replace a ringback tone and the second information on a route to the sound db server that are received from a home location register (HLR), and provides a called subscriber identification for the sound server. Then, the sound db server searches its db for a sound specified by the called, and provides the found sound for the caller instead of a conventional ringback tone via the terminating exchanger connected through a trunk. Through this sequential procedure of network elements, a caller can hear a sound specified by a called instead of a dry ringback tone.

Abstract: The present invention relates to method for providing an arbitrary sound chosen by a called subscriber instead of an ordinary tone to a calling or call-waiting subscriber. In this present invention, if a call is received, a terminating exchanger requests a trunk connection to a sound db server based on the first information on whether or not to replace an ordinary tone and the second information on a route to the sound db server that were received from a home location register (HLR) when a called was registered, and provides the called identification and call state (idle/busy or call-waiting, etc.) for the sound server. Then, the sound db server searches its db for a sound associated with the call state specified by the called, and provides the found sound for the caller instead of a conventional tone via the terminating exchanger. Through this sequential procedure of network elements, a caller can hear a sound specified by a called instead of a dry ordinary tone.

Abstract: The present invention relates to a method for providing a caller with an arbitrary sound pre-stored in an exchanger that is chosen by a called subscriber instead of a conventional RBT (RingBack Tone). The present method comprises: a first step, conducted by an HLR (Home Location Register) when a location request message is received from a call-originating exchanger because of call connection request to a terminal, of furnishing a call-terminating exchanger with information on whether or not an RBT is to be replaced for the terminal through a routing information request message that is sent to the call-terminating exchanger; and a second step, conducted by the call-terminating exchanger when a trunk connection request from a call-originating exchanger is recognized, of searching for a sound code assigned to the terminal based on the information, and providing a caller with a pre-stored RBT-replacing sound associated with the found sound code as an RBT.

Abstract: The present invention provides a caller with an arbitrary sound chosen by a called subscriber instead of a conventional RBT (RingBack Tone) without fails even in a flexible paging mode.

Abstract: The present invention relates to apparatus and method of providing a history of failed calls for a subscriber who is targeted by the failed calls. In the present invention, when an exchanger can not route a call to a target subscriber it notifies an HLR (Home Location Register) of call routing failure. Then, the HLR sends information about the failed call, which includes the called and the calling number, and call originating time (or call receiving time), to a call control system. The call control system adds the received failed-call information to a calling history for the called number. Afterwards, when the called number is accessible the call control system provides a subscriber of the called number with the calling history, whereby the subscriber can know all of calling numbers that requested to make connections with him or her while he or she was not able to communicate with a mobile network.

Abstract: The present invention discloses a method for tracking location of synchronous and asynchronous mobile communication network subscribers by using a dual stack home location register and a dual stack mobile positioning center. When the dual stack mobile positioning center externally receives a location tracking request for a subscriber, it requests reception subscriber information to the dual stack home location register, confirms whether the terminal is located in a synchronous or asynchronous mobile communication network by referring to the reception subscriber information from the dual stack home location register and network information, and requests location tracking for the terminal to the corresponding mobile communication network. Accordingly, location of the synchronous and asynchronous mobile communication network subscribers can be tracked in the network in which mobile communication networks using different protocols coexist.

Abstract: The present invention relates to method and apparatus for providing an arbitrary sound chosen by a called subscriber instead of ringback tone to a calling subscriber. In this present invention, if a call is received, a terminating exchanger requests a trunk connection to a sound db server based on the first information on whether or not to replace a ringback tone and the second information on a route to the sound db server that are received from a home location register (HLR), and provides a called subscriber identification for the sound server. Then, the sound db server searches its db for a sound specified by the called, and provides the found sound for the caller instead of a conventional ringback tone via the terminating exchanger connected through a trunk. Through this sequential procedure of network elements, a caller can hear a sound specified by a called instead of a dry ringback tone.

Abstract: The present invention discloses a mobile location based service system and method. The mobile location based service system includes an application server for receiving a location based service request, and providing a location based service of a mobile station, and a location information providing system for discriminating location of the mobile station according to a kind of a location information service, and transmitting the location of the mobile station to the application server. A cell or GPS based location based service can be selectively provided according to a function of a mobile station of a mobile communication subscriber and a service request type. The GPS based location based service can be provided by an SMS delivery point to point message through an N07 signal network, and thus embodied during a voice call of the mobile station.