15. The simultaneous interpretation system of claim 3 , wherein the portable terminal comprises: an input part for outputting an input signal to select at least one language for the simultaneous interpretation and to access the interpretation server; a communication part for allowing communications between the wired/wireless headsets and communications with the interpretation server; a display part for outputting a selection screen to select the at least one language for simultaneous interpretation between the wired/wireless headsets; a voice processor for receiving the original language voice speech signal to be interpreted from one or more microphones, and a speaker for outputting the interpreted voice speech signal; and a controller for detecting a corresponding input signal of the input part and controlling to automatically connect to the interpretation server when particular languages for the simultaneous interpretation are selected.
3. The simultaneous interpretation system of claim 1 , further comprising: the interpretation server interprets the original language voice speech signal output from the first headset, wherein the portable terminal acquires the interpreted voice speech signal by accessing the interpretation server and providing the original language voice speech signal to be interpreted and indicates the interpreted language to which the original language speech signal is to be interpreted.