Patent ID: 6636492
Filing Date: 2003-10-21
Classification: H04W

Abstract:
An apparatus for interfacing between a mobile switching center and an inter working function unit, comprising:inter-system link protocol processing means for: a) processing a plurality of subhighway data inputted respectively through subhighways in the unit of subscribers according to an inter-system link protocol; and b) separating data transferred over a given channel of an E1 trunk from said inter working function unit according to said subhighways and their time slots and transferring the separated data respectively to the subscribers; storage means for storing the subscriber-unit data processed by said inter-system link protocol processing means in the unit of channels or said data transferred over said given E1 trunk channel from said inter working function unit in the unit of the subscribers; and frame relay protocol processing means for: a) extracting only a plurality of actual subscriber data from said channel-unit data stored in said storage means, processing the extracted actual subscriber data according to a frame relay protocol, assigning the processed actual subscriber data to a specific channel of said E1 trunk and transferring them to said inter working function unit; and b) extracting respective subscriber data from said data transferred over said given E1 trunk channel from said inter working function unit and storing the extracted subscriber data in said storage means in the unit of the subscribers.