FIELD: mobile communication networks. SUBSTANCE: mobile station serviced by visited mobile switching center and coupled with definite mobile switching center as source mobile switching center transmits the call. Base station subsystem connected to visited mobile switching center dynamically establishes A- interface with applied module in source mobile switching center through visited mobile switching center. After that all subscribers' data transmitted are conveyed from servicing base station subsystem to source mobile switching center. Then applied module in source mobile switching center processes data for rendering mobile services to mobile station. In this way connections can be established with applied-level processing modules of any other mobile communication center through A-interface. EFFECT: facilitated interfacing in mobile communication networks. 29 cl, 10 dwg
