公开(公告)号：US20250039295A1

公开(公告)日：2025-01-30

申请号：US18913429

申请日：2024-10-11

Applicant: Pindrop Security, Inc.

Inventor： MohammedAli MERCHANT ,  Matthew WILLIAMS ,  Tim PRUGAR

IPC: H04M3/22 ,  H04M3/42

Abstract: According to an embodiment of the disclosure, a toll-free telecommunications validation system determines a confidence value that an incoming phone call to an enterprises' toll-free number is originating from the station it purports to be by incorporating one or more layers of signals and data in determining said confidence value. The data and signals can include one or more call identifiers and/or toll-free call routing logs, service control point (SCP) signals and data, service data point (SDP) signals and data, dialed number information service (DNIS) signals and data, session initiation protocol (SIP) signals and data, carrier identification code (CIC) signals and data, location routing number (LRN) signals and data, jurisdiction information parameter (JIP) signals and data, charge number (CN) signals and data, billing number (BN) signals and data, and originating carrier information (such as information derived from the ANI).