COMMUNICATION TERMINAL DEVICE, COMMUNICATION MANAGEMENT DEVICE, COMMUNICATION METHOD, COMMUNICATION PROGRAM, AND RECORDING MEDIUM

摘要

A communication terminal device (110) establishes a communication with a transmission destination specified via a communication management device (120). A communication terminal device (110A) includes: an identifier setting unit (111) which sets a unique identifier specifying the local device or an identifier for a temporary cryptonym not specifying the local device in an identifier for communication with the specified transmission destination; and a communication unit (112) which transmits a transmission request to the transmission destination by using the set identifier. The communication request is firstly received by a communication management device (120). The communication management device (120) causes an extraction unit (121) to extract the identifier of the communication terminal device (110A) as the transmission source from the received communication request. Furthermore, according to the extracted identifier of the communication terminal device (110A), a judgment unit (122) judges the destination to which an invoice of the fee of the communication between the communication terminal devices (110A and 110B) is to be sent. Furthermore, an accumulation unit (123) accumulates the information on the communication fees for each of the claimed destinations.