Patent ID: 8254541

Claim:
A validation system adapted to validate caller ID information in a communication network, the validation system comprising: an interface system adapted to receive call signaling for a call in the communication network; and a processing system adapted to: process the call signaling to identify originating node information inserted in the call signaling by an originating node in the communication network, the originating node information comprising a network address for the originating node; process the call signaling to identify caller ID information for the call; process the originating node information and the caller ID information to determine whether the call originated from the originating node by: processing the network address to identify a network domain associated with the network address; processing the caller ID information to identify a network domain in the caller ID information; and comparing the network domain associated with the network address and the network domain in the caller ID information to determine whether the call originated from the originating node; determine that the caller ID information is valid responsive to determining that the call originated from the originating node; and determine that the caller ID information is counterfeit responsive to determining that the call did not originate from the originating node.