Embodiments of the present invention facilitate the solicitation of user input while allowing for dynamic changes to that input while concurrently ranking the same. A method for condensing steam in a cooler, wherein by means of a pump a pressure is maintained in the cooler, and wherein the inert gas discharge is screened from steam breaking through the cooler. A configuration in which the number of antennas can be arbitrarily increased is implemented and a protocol for call connection is performed only between the base station and the master communication terminal. Error correction may be performed within each logical group to correct single errors within the logical group.