VALIDATING CALLER ID INFORMATION TO PROTECT AGAINST CALLER ID SPOOFING

摘要

Caller ID validation system (106) and methods are provided. When a call is placed over a communication network (100), a validation system (106) receives the call signaling, and processes the call signaling to identify originating node information in the call signaling. The originating node information is inserted by the communication network (100) when handling the call and pertains to a network node (102) that originates the call into the network. The validation system (106) also processes the call signaling to identify caller ID information for the call. The validation system (106) then processes the originating node information and the caller ID information to determine whether the call originated from the originating node (102). If the call did originate from the originating node (102), then the validation system (106) determines that the caller ID information is valid.