Control apparatus, communications control system, and non-transitory recording medium that stores program

A communications control system comprising:

• a plurality of communications terminals;
• and
• a control apparatus,
• wherein
• a first communications terminal from among the communications terminals comprises at least one processor configured to:
• transmit a request to start a communication between the first communications terminal and a second communications terminal and select one or more relay apparatuses that relay content data transmitted and received between the first communications terminal and the second communications terminal from among the communications terminals, and
• the control apparatus comprises:
• a network interface;
• a storage unit, and
• at least one processor configured to:
• receive, through a network interface, a request from a first communications terminal from among a plurality of communications terminals to start a communication between the first communications terminal and a second communications terminal and select one or more relay apparatuses that relay content data transmitted and received between the first communications terminal and the second communications terminal from among the communications terminals, said one or more relay apparatuses including a first relay apparatus that belongs to a first intranet and a second relay apparatus that belongs to a second intranet that is connected to the first intranet via a network that is not an intranet;
• search for one or more relay apparatuses that are included in intranets and usable for the communication between the first communications terminal and the second communications terminal;
• select, based on a result of the search, the first and second relay apparatuses included in the first and second intranets usable by the first communications terminal and the second communications terminal in response to the received request;
• and
• transmit, through the network interface, identification information of the selected first and second relay apparatuses to the first communications terminal from which the request was received,
• wherein the at least one processor is further configured to:
• instruct the first and second relay apparatuses to directly communicate to each other, thereby performing the communication between the first communications terminal and the second communications terminal.

A non-transitory recording medium storing a program which, when executed by one or more processors, causes the one or more processors to:

• receive, through a network interface, a request from a first communications terminal from among a plurality of communications terminals to start a communication between the first communications terminal and a second communications terminal and select one or more relay apparatuses that relay content data transmitted and received between the first communications terminal and the second communications terminal from among the communications terminals, said one or more relay apparatuses including a first relay apparatus that belongs to a first intranet and a second relay apparatus that belongs to a second intranet that is connected to the first intranet via a network that is not an intranet;
• search for one or more relay apparatuses that are included in intranets and usable for the communication between the first communications terminal and the second communications terminal;
• select, based on a result of the search, the first and second relay apparatuses included in the first and second intranets usable by the first communications terminal and the second communications terminal in response to the received request;
• and
• transmit, through the network interface, identification information of the selected first and second relay apparatuses to the first communications terminal from which the request was received,
• wherein the at least one processor is further configured to:
• instruct the first and second relay apparatuses to directly communicate to each other, thereby performing the communication between the first communications terminal and the second communications terminal.