Patent ID: 6532362
Filing Date: 2003-03-11
Classification: H04W

Abstract:
In a mobile communication system, a method of OTASP for generating a TRN by an exchange through OTASP, transmitting the TRN to an OTAF system, and providing an OTAR of a mobile telephone through the OTAF system, the method comprising:inserting in a TRN packet information for discriminating an OTAR request call from other calls, information for discriminating the exchange from other exchanges, and information about the mobile telephone requesting the OTAR request call, and transmitting the TRN packet having the information to the OTAF system through a Private Automatic Branch Exchange (PABX) and a CCSC; establishing a data transmission path capable of data exchange between the OTAF system and the mobile telephone, and thereby providing the OTAR of the mobile telephone; in the exchange, generating the TRN packet having information about the OTAR request call, exchange identity information, and mobile telephone identity information after receiving the OTAR request call, transferring the TRN packet having the information, and transferring a voice call to the PABX; in the PABX, identifying the OTAR request call after checking the TRN packet from the exchange, and directly transmitting the TRN packet and the voice call to an OTASP operator and operator server of the CCSC upon identifying the OTAR request call; in the CCSC, transmitting the TRN packet to the OTAF system to activate the data transmission path for data exchange with the mobile telephone; and in the OTAF system, establishing the data transmission path after checking the TRN packet; wherein the TRN packet includes: a header code having fixed bits for indicating the OTAR request call through the OTASP, a point code having fixed bits for identifying the exchange which switches the OTAR request call through the OTASP; and a mobile telephone identity code having fixed bits for identifying the mobile telephone which requests the OTAR call; and the point code comprises: a subsystem number for identifying an equipment type; a network number for discriminating a particular region where the exchange is located, from other regions; a cluster number discriminating nodes within the region; and an exchange number for discriminating the exchange which is located in the particular region, from other exchanges.