Apparatus, system, and method of managing data, and carrier means

摘要

A transmission terminal (10) includes: a memory (1000) to store, for each one of a plurality of candidate counterpart terminals that the transmission terminal (10) is capable of communicating, address information indicating at least a location of the candidate counterpart terminal on a network (2); an operation input device (12) to receive a user input of address information of a counterpart terminal (10), and a communication start request that requests to start communication with the counterpart terminal (10); a data processor (19) to store the address information of the counterpart terminal (10) received at the operation input device (12) in the memory (1000), to register the counterpart terminal (10) as a candidate counterpart terminal for the terminal (10); and a transmitter (11) to send a request to start communication with the counterpart terminal (10) using the address information of the counterpart terminal (10) that is received at the operation input device (12).