To display log information related to the communication of a plurality of pseudo base stations in such a manner that each individual pseudo base station can be identified.

A test system for a mobile communication terminal is network connected to the plurality of pseudo base station devices, to receive a packet transmitted from each of the plurality of pseudo base station devices, and includes a display device 10 for displaying a communication log between layers on a display unit 11 on the basis of the log data included in the packet. Based on identification information added to the log data, the display device displays the log on the display unit in such a manner that a pseudo base station device performing communication can be identified.