BI-DIRECTIONAL CALL METHOD OF A MOBILE TERMINAL, PARTICULARLY FOR ALLOWING A CALLER TO REQUEST A BI-DIRECTIONAL CALL FROM A BASE STATION IF A CALLEE IS IMPOSSIBLE TO RECEIVE A HIS/HER CALL, THE BASE STATION TO MONITOR THE CALLEE TERMINAL AND SIMULTANEOUSLY CALLS THE CALLER TERMINAL AND THE CALLEE TERMINAL WHEN THE CALLEE TERMINAL IS AVAILABLE FOR THE CALL TO FORM AN INTER-CALL LINK

摘要

PURPOSE: A bi-directional call method of a mobile terminal is provided to heighten a call success rate by automatically connecting a caller and a callee when the callee is changed to a state of being available for call communication from a state that he/she was not available. CONSTITUTION: A caller attempts a call to a callee by using a terminal. If the callee terminal is not available for the call, the caller transmits a bi-directional call request signal to a base station. The base station monitors a call available state of the callee terminal. When the callee terminal becomes available for call communication, the base station calls both the caller terminal and the callee terminal. A call link is formed between the caller terminal and the callee terminal.