Patent ID: 8037516

Claim:
A Voice over Internet Protocol (VoIP) calling method comprising: initiating setup of a voice over internet protocol call using a voice over internet protocol call originating device; receiving at the voice over internet protocol call originating device an authentication token for the voice over internet protocol call that is set up that indicates that the voice over internet protocol call is authorized; inserting the authentication token for the voice over internet protocol call into packets for the voice over internet protocol call; transmitting the packets including the authentication token for the voice over internet protocol call, into an Internet Protocol network; wherein the packets are Internet Protocol version 6 packets that include a flowID field; wherein inserting the authentication token for the voice over internet protocol call into packets for the voice over internet protocol call comprises inserting the authentication token into the flowID field of the Internet Protocol version 6 packets for the voice over internet protocol call; and wherein transmitting the packets including the authentication token, into an Internet Protocol network comprises transmitting the Internet Protocol version 6 packets including the authentication token in the flowID field of the internet protocol version 6 packets, into the Internet Protocol network.