RELAY DEVICE AND VOICE COMMUNICATION RECORDING METHOD

摘要

[Problem];Provided is a relaying device that can track and record a communicated voice of a specific communication terminal using a mixing function of the relaying device.;[Solution];When a communication terminal has made a call, a communication session in which the communication terminal that has made a call and a communication terminal that has been called are participating terminals is established. When a voice signal is transmitted from one participating terminal of the established communication session, this voice signal is transmitted to the other participating terminal(s) of the same communication session along with session information. A virtual device is associated with a communication terminal, and is registered in a communication session in which the communication terminal participates as a participating terminal together with the communication terminal. A communication monitoring unit records a voice signal transmitted to the virtual device from the communication session.