Sk Telecom Company, Ltd.

Sk Telecom Ltd.

Hee-Hyeok Hahm

Sang-Yun Lee

Tae-Wook Park

Ki-Mun Kim

Il-Weon Cho

Hyuk-Hoon Kwon

Kyeong-Hee Han

Bum-Soo Shin

Jae-Young Park

Soo-Jin Kim

Jae Young Ju

Young Ahn Ryu

Young-Ho Joo

Hyun Ki Hong

Hyung-joon Cho

Seung-Ook Je

Jae-Young Ju

Bong-Ju Kang

Young-Ho Ju

Hyun-Hoon Kwon

Young-Ahn Ryu

Soon-Ki Hwang

Yeong-Tae No

Hyung-Joon Cho

Soo Jin Kim

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.

Method and apparatus of transmitting personal information in subscriber-based ringback tone service

The present invention relates to a method of performing handover from an asynchronous mobile communication network to a synchronous mobile communication network. If the access network of the asynchronous mobile communication network () requests handover to an MSC () of the asynchronous mobile communication network, the MSC requests/receives subscriber information of the mobile communication terminal from a dual-stack HLR (), and transmits a handover request message to the synchronous mobile communication network (). The MSC () of the synchronous mobile communication network assigns a forward channel to the mobile communication terminal. The asynchronous mobile communication network () transmits a handover instruction message to the asynchronous RF device of the mobile communication terminal. Accordingly, the mobile communication terminal sets up a synchronous RF device, connects to the synchronous mobile communication network through reverse channel assignment and synchronization. The mobile communication terminal transmits a handover completion message to the synchronous mobile communication network.

Hand over method from asynchronous mobile communication network to synchronous mobile communication network

Disclosed herein are a system and method for transferring voice messages. The system includes a voice message server. When a voice message and called terminal information are transmitted from a calling terminal, the voice message server stores the voice message, searches for a connection mute to the called terminal with reference to the called terminal information, and transmits a reception request signal to the called terminal. Furthermore, when the called terminal responds to the reception request signal, the voice message server reproduces the voice message. Furthermore, when the called terminal does not respond to the reception request signal and the reception request signal is forwarded to a different receiving object, the voice message server checks whether the route of the reception request signal has been changed and interrupts the transmission of the voice message. Accordingly, an additional communication charge may be avoided.

System and method for transferring voice messages

A voice message transmission system and method which includes a sending terminal (MS) for registering a voice message and for receiving a notice of a message regarding the registered voice information; a base station controller (BSC) carrying out a call connection of the mobile communication network in response to a request for registering the voice message of the sending terminal (MS) received from a plurality of base stations(BTS); a mobile switching station (MSC/VLR) for carrying out a channel management and control connected from the base station controller (BSC) and carrying out a signal processing function according to the call connection; and an IP server interlocked with the mobile switching station (MSC/VLR), storing the voice message and outdialing on the basis of sender information, and then reproducing and outputting the voice message to the receiving terminal in the case that a receiving signal of the receiving terminal is recognized wherein the IP server includes a voice mailbox server (VMS) and a voice message management server for generating receiving information corresponding to a message identification of the receiving terminal.

Voice message transmission system, transmission result notification system, and methods thereof

In the mobile communication system, asynchronous and synchronous Mobile Switching Centers (MSCs) are interconnected via an Interworking Interoperability Function (IIF), and are connected to a Dual stack Home Location Register (D-HLR). The D-HLR stores and manages asynchronous subscription and synchronous subscription information of the mobile communication terminal. The IIF stores and manages the synchronous mobile communication system information, receives the synchronous subscription information of the mobile communication terminal from the D-HLR, transmits synchronous system information and the synchronous subscription information of the mobile communication terminal to the synchronous MSC and receives a response from the synchronous MSC, and requests the asynchronous MSC to release a wireless connection when the mobile communication terminal and the synchronous mobile communication system are interconnected and notification of completion of the handover is provided.

Mixed mobile communication system of asynchronous communication network and synchronous communication network having handover function of mobile communication terminal, and handover method in the same

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.

Reply voice message transmission system and method thereof

A dual stack mobile communication system is provided for building a single interworking network of an asynchronous network and a synchronous network. A single node is formed by combining the same kind nodes of the asynchronous network and the synchronous network, wherein the single node searches information for generating two output signal points according to a synchronous protocol and an asynchronous protocol in one input signal point according to the synchronous protocol or asynchronous protocol, and generates one output signal point.

Dual stack mobile communication system

The present invention relates to a method for processing an address of a short message service center in a WCDMA network, including: a load centralization confirmation step where an operation control unit receives short message processing states from each short message service center, confirms load centralization states of each short message service center, and generates an operation message; a path setup step where a mobile switching center receives a short message from a mobile station, and sets up a transmission path of the short message according to the operation message; and an optimal transmission step where the mobile switching center transmits the short message from the mobile station to the corresponding short message service center through the transmission path according to the result of the path setup step. When a lot of messages are centralized to a specific short message service center due to call habits of subscribers, some subscribers of the short message service center arc distributed to another short message service center, and thus service center reception ability is predictable. It is also possible to actively cope with civil appeals and troubles.

Method for processing address of short message service center in IMT-2000 asynchronous network

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Seoul, South Korea

Hee-Hyeok Hahm