Communication management server, communication system, transmitting apparatus, communication method, and program

A method executed by a communication management server that manages communication with a sender terminal that transmits image data and a receive terminal that receives the image data, the method comprising:

• receiving, from the receive terminal, sender terminal identification information identifying the sender terminal, and receive terminal identification information identifying the receiving device;
• transmitting, to the sender terminal, request information indicating a request for transmitting image data of a first image type playable by the receive terminal, when a second image type of image data transmittable by the sender terminal according to the sender terminal identification information, and the first image type of image data playable by the receive terminal, according to the receive terminal identification information, are different;
• and
• not transmitting, to the sender terminal, the request information, when the second image type transmittable by the sender terminal according to the sender terminal identification information and the first image type playable by the receive terminal according to the receive terminal identification information are the same.

A non-transitory computer-readable medium storing instructions, which when executed by processing circuitry, cause the processing circuitry to perform a method of managing communication with a sender terminal that transmits image data and a receive terminal that receives the image data, the method comprising:

• receiving, from the receive terminal, sender terminal identification information identifying the sender terminal, and receive terminal identification information identifying the receiving device;
• transmitting, to the sender terminal, request information indicating a request for transmitting image data of a first image type playable by the receive terminal, when a second image type of image data transmittable by the sender terminal according to the sender terminal identification information, and the first image type of image data playable by the receive terminal, according to the receive terminal identification information, are different;
• and
• not transmitting, to the sender terminal, the request information, when the second image type transmittable by the sender terminal according to the sender terminal identification information and the first image type playable by the receive terminal according to the receive terminal identification information are the same.