Transmission system, communications control apparatus, communications control method, communications method, and recording medium

A communications control method executed by a communications control apparatus, the communications control apparatus implementing communications connection between a first transmission terminal and a second transmission terminal, the communications control method comprising:

• connecting first data communications between the first transmission terminal specified by first identification information and the second transmission terminal specified by second identification information;
• creating fourth identification information of the second transmission terminal when receiving a request for connecting second data communications between the first transmission terminal and the second transmission terminal;
• and
• acquiring third identification information in association with the first identification information by referring to registration information registering the third identification information in association with the first identification information of the first transmission terminal, and connecting the second data communications between the first transmission terminal specified by the third identification information and the second transmission terminal specified by the fourth identification information.

A communications method performed by a system, the system including a first transmission system transmitting and receiving first data between a first transmission terminal and a second transmission terminal, and a second transmission system transmitting and receiving second data between the first transmission terminal and the second transmission terminal, the communications method comprising:

• causing the first transmission system to connect first data communications between the first transmission terminal specified by first identification information and the second transmission terminal specified by second identification information;
• causing the first transmission system to create fourth identification information of the second transmission terminal when receiving a request for connecting second data communications between the first transmission terminal and the second transmission terminal;
• causing the first transmission system to acquire the third identification information in association with the first identification information by referring to registration information registering the third identification information in association with the first identification information of the first transmission terminal;
• causing the first transmission system to transmit the third identification information and the fourth identification information to the second transmission system;
• causing the second transmission system to receive the third identification information and the fourth identification information;
• and
• causing the second transmission system to connect the second data communications between the first transmission terminal specified by the third identification information and the second transmission terminal specified by the fourth identification information.