Communication management system, communication system, computer-readable recording medium, and maintenance system

A method for a communication management system, the method comprising:

• storing, in a memory, first destination information and second destination information, wherein
• the first destination information represents a destination of a first communication terminal, the first communication terminal configured to establish a communication session with a relay device that relays video data, and
• the second destination information represents a destination of a second communication terminal, the second communication terminal configured to establish a communication session with a gateway configured to perform mutual conversion between a first communication method used by the first communication terminal to transmit and receive the video data and a second communication method used by the second communication terminal to transmit and receive the video data, the first communication method and the second communication method including at least one of a session control protocol or a video coding, and the first communication method and the second communication method being different from each other in the at least one of the session control protocol or the video coding;
• receiving start request information, from the first communication terminal, to start communication between the first communication terminal and the second communication terminal;
• and
• extracting, by processing circuitry, the second destination information of the second communication terminal stored in the memory, based on the received start request information, wherein
• the communication session between the gateway and the second communication terminal is established based on the extracted second destination information so that the second communication terminal is in a state of being able to transmit and receive the video data to and from a destination corresponding to the first destination information of the first communication terminal via the relay device and the gateway.

A system, comprising:

• a relay device;
• a communication management system that manages communication between a first communication terminal and a second communication terminal that transmit and receive video data via the relay device;
• and
• a gateway that performs a mutual conversion between a first communication method used by the first communication terminal to transmit and receive the video data and a second communication method used by the second communication terminal to transmit and receive the video data, the first communication method and the second communication method including at least one of a session control protocol or a video coding, and the first communication method and the second communication method being different from each other in the at least one of the session control protocol or the video coding, wherein
• the communication management system includes:
• a memory that stores first destination information and second destination information, the first destination information represents a destination of the first communication terminal, the first communication terminal configured to establish a communication session with the relay device that relays the video data, and the second destination information represents a destination of the second communication terminal, the second communication terminal configured to establish a communication session with the gateway;
• a receiver that receives start request information, from the first communication terminal, to start communication between the first communication terminal and the second communication terminal;
• and
• processing circuitry configured to extract the second destination information of the second communication terminal stored in the memory, based on the received start request infoiination, and
• the communication session between the gateway and the second communication terminal is established based on the extracted second destination information so that the second communication terminal is in a state of being able to transmit and receive the video data to and from a destination corresponding to the first destination information of the first communication terminal via the relay device and the gateway.

A non-transitory computer readable medium storing computer-executable instructions which, when executed by a communication management system, cause the communication management system to:

• store first destination information and second destination information, wherein
• the first destination information represents a destination of a first communication terminal, the first communication terminal configured to establish a communication session with a relay device that relays video data, and
• the second destination information represents a destination of a second communication terminal, the second communication terminal configured to establish a communication session with a gateway configured to perform mutual conversion between a first communication method used by the first communication terminal to transmit and receive the video data and a second communication method used by the second communication terminal to transmit and receive the video data, the first communication method and the second communication method including at least one of a session control protocol or a video coding, and the first communication method and the second communication method being different from each other in the at least one of the session control protocol or the video coding;
• receive start request information, from the first communication terminal, to start communication between the first communication terminal and the second communication terminal;
• and
• extract, based on the received start request information, the second destination information of the second communication terminal, wherein
• the communication session between the gateway and the second communication terminal is established based on the extracted second destination information so that the second communication terminal is in a state of being able to transmit and receive the video data to and from a destination corresponding to the first destination information of the first communication terminal via the relay device and the gateway.