Study on IMS Enhanced Spoofed Call Prevention and Detection
The present document evaluates the IETF STIR working group active drafts for use in 3GPP networks for spoofed call detection and make recommendations on what aspects of IETF STIR active drafts should be incorporated into 3GPP IMS security specifications.
Additionally 3GPP technology specific aspects not considered or addressed in the IETF STIR Working Group will be identified and studied such as service interactions and deployment scenarios including (but not limited to):
• * Roaming
• * Business line trunking/PBX
• * CS to IMS transition scenarios