Virtual terminal server, mobile communication terminal, communication control system, and communication control method

In order to provide a new service even to a conventional mobile communication terminal (10,30) without installing a new function when starting a new mobile communication service, a mobile communication terminal (10,30) is connectable to a virtual terminal server (20) that controls the communication on behalf of the mobile communication terminal (10,30) according to a request from the mobile communication terminal (10,30) to realize a service function that is a communication function not included in the mobile communication terminal (10,30). The virtual terminal server (20) processes, in accordance with the model information of the mobile communication terminal (10,30), information to be informed to the mobile communication terminal (10,30) to realize the service function to thereby enable the mobile communication terminal (10,30) to acquire and transmit information obtained by realizing the service function.