VoLTE / VoLTE / VoLTE Roaming Counterfeit/Falsification Preventing System Call Session Control Function Apparatus and Method for Preventing VoLTE Roaming Counterfeit/Falsification

摘要

A VoLTE roaming forgery / tamper prevention system, a call control function device and a VoLTE roaming forgery / tamper prevention method are disclosed. The VoLTE roaming forgery / anti-tampering system according to the present invention includes a Call Control Function (CSCF) function for performing an Internet Protocol Multimedia Subsystem (IMS) registration procedure when roaming a Voice of Long Term Evolution (VoLTE) ); And a home subscribing server for storing location information acquired through a long term evolution (LTE) connection of the user terminal. In this case, the call control function device compares the location information acquired at the time of roaming of Voice of Long Term Evolution (VoLTE) of the user terminal with the location information stored in the home subscriber server to verify the outgoing call.;