Communication terminal, communication system, communication method, and recording medium

A communication system comprising:

• a communication terminal including circuitry;
• and
• a plurality of counterpart communication terminals located at a site remote from a site where the communication terminal is located, the plurality of counterpart communication terminals including at least a first counterpart communication terminal being configured to use a first communication application and a second counterpart communication terminal being configured to use a second communication application,
• the communication terminal including the circuitry which is configured to:
• receive, from a mobile terminal, counterpart terminal identification information for identifying one of the plurality of counterpart communication terminals configured to start communication, the mobile terminal being a mobile terminal that has obtained the counterpart terminal identification information from the one of the plurality of counterpart communication terminals;
• determine a communication application to be used by the counterpart communication terminal to start communication, based on the received counterpart terminal identification information,
• wherein, when the determined communication application is the first communication application, the circuitry identifies, as the counterpart communication terminal to start communication, the first counterpart communication terminal that uses the first communication application, and
• when the determined communication application is the second communication application, the processors identify, as the counterpart communication terminal to start communication, the second counterpart communication terminal that uses the second communication application;
• and
• transmit a communication start request to the identified counterpart communication terminal that uses the determined communication application, to start communication with the identified counterpart communication terminal through the determined communication application.

A method, implemented by a communication terminal, of communicating with a counterpart communication terminal, comprising:

• receiving, from a mobile terminal, counterpart terminal identification information for identifying a counterpart communication terminal that the communication terminal is to start communication, the mobile terminal being a mobile terminal that has obtained the counterpart terminal identification information from the counterpart communication terminal;
• determining a communication application to be used by the counterpart communication terminal in communication with the communication terminal, based on the received counterpart terminal identification information;
• identifying, as the counterpart communication terminal, 1) a first counterpart communication terminal that uses a first communication application when the determined communication application is the first communication application, and 2) a second counterpart communication terminal that uses a second communication application when the determined communication application is the second communication application;
• and
• transmitting a communication start request to the identified counterpart communication terminal that uses the determined communication application, to start communication with the identified counterpart communication terminal through the determined communication application.