A communication terminal of the present invention includes a first communication unit used for communication including at least a voice call, an operation input unit for acquiring instruction input from a user, a second communication unit for performing communication with a predetermined object apparatus equipped with a function capable of receiving access via at least an external network, and a control unit that, when a voice call channel is established to another communication terminal, and an access permission instruction is inputted by the user, performs setting with respect to the object apparatus to permit the access from the another communication terminal via the external network, and transmits, to the another communication terminal, access information for performing the access to the object apparatus via the external network.