A control apparatus , comprising: a connection request reception section configured to receive, from a first communication terminal , a request for a connection to a second communication terminal; a confirmation request transmission section configured to transmit a confirmation request to confirm whether a direct communication is possible to the first communication terminal and the second communication terminal ; a confirmation result reception section configured to receive a confirmation result from at least one of the first communication terminal and the second communication terminal ; a judgment section configured to judge, based on the confirmation result, whether the direct communication between the first communication terminal and the second communication terminal is possible; a switch request transmission section configured to transmit, when it is judged that the direct communication is possible, a switch request for the direct communication to the first communication terminal and the second communication terminal ; and a vicinity confirmation section configured to confirm whether the first communication terminal and the second communication terminal are in the vicinity of each other, wherein the confirmation request transmission section transmits, when it is confirmed that the first communication terminal and the second communication terminal are in the vicinity of each other, the confirmation request to confirm whether the direct communication is possible to the first communication terminal and the second communication terminal , wherein the confirmation result received includes information on a measured reception electrical field intensity or information that indicates a fact that the reception electrical field intensity has been unable to be measured. a connection request reception section configured to receive, from a first communication terminal , a request for a connection to a second communication terminal; a confirmation request transmission section configured to transmit a confirmation request to confirm whether a direct communication is possible to the first communication terminal and the second communication terminal ; a confirmation result reception section configured to receive a confirmation result from at least one of the first communication terminal and the second communication terminal ; a judgment section configured to judge, based on the confirmation result, whether the direct communication between the first communication terminal and the second communication terminal is possible; a switch request transmission section configured to transmit, when it is judged that the direct communication is possible, a switch request for the direct communication to the first communication terminal and the second communication terminal ; and a vicinity confirmation section configured to confirm whether the first communication terminal and the second communication terminal are in the vicinity of each other, wherein the confirmation request transmission section transmits, when it is confirmed that the first communication terminal and the second communication terminal are in the vicinity of each other, the confirmation request to confirm whether the direct communication is possible to the first communication terminal and the second communication terminal , wherein the confirmation result received includes information on a measured reception electrical field intensity or information that indicates a fact that the reception electrical field intensity has been unable to be measured. <EOS>