Apparatus, system, and method of managing data transmission, and recording medium storing transmission management program

A transmission management system, comprising:

• one or more processors configured to manage, for each one of one or more sessions, terminal identification information for identifying each one of a plurality of transmission terminals that are currently participating in the session, in association with reservation identification information for identifying reservation of communication on which the session is based, to generate association information;
• and
• a network interface configured to receive a communication start request for starting communication with a counterpart transmission terminal from a request transmission terminal, wherein the one or more processors are configured to:
• obtain reservation identification information associated with the counterpart transmission terminal using the association information, the reservation identification information associated with the counterpart transmission terminal being associated with counterpart terminal identification information for identifying the counterpart transmission terminal;
• obtain reservation identification information associated with the request transmission terminal;
• determine whether the reservation identification information associated with the request transmission terminal matches the reservation identification information associated with the counterpart transmission terminal to generate a determination result;
• and
• send a response generated based on the determination result to the request transmission terminal in response to the request for starting communication with the counterpart transmission terminal, wherein
• when the determination result indicates that the reservation identification information associated with the request transmission terminal matches the reservation identification information associated with the counterpart transmission terminal, the response indicates that the request for starting communication is accepted, and
• when the determination result indicates that the reservation identification information associated with the request transmission terminal does not match the reservation identification information associated with the counterpart transmission terminal, the response indicates that the request for starting communication is rejected.

A method of managing data transmission at least between a request transmission terminal and a counterpart transmission terminal, the method comprising:

• obtaining reservation identification information associated with a counterpart transmission terminal using 1) association information that associates, for each one of one or more sessions, terminal identification information for identifying each one of a plurality of transmission terminals that are currently participating in the session, with reservation identification information for identifying reservation of communication on which the session is based, and 2) counterpart terminal identification information for identifying the counterpart transmission terminal;
• obtaining reservation identification information associated with the request transmission terminal;
• determining whether the reservation identification information associated with the request transmission terminal matches the reservation identification information associated with the counterpart transmission terminal to generate a determination result;
• and
• deciding to accept or reject a request for starting communication with the counterpart transmission terminal based on the determination result, wherein
• when the determination result indicates that the reservation identification information associated with the request transmission terminal matches the reservation identification information associated with the counterpart transmission terminal, the deciding accepts the request for starting communication, and
• when the determination result indicates that the reservation identification information associated with the request transmission terminal does not match the reservation identification information associated with the counterpart transmission terminal, the deciding rejects the request for starting communication.