The top documents tagged [unassigned numbers numbers]

PREVENTING CALLERID SPOOFING Henning Schulzrinne FCC draft-peterson-secure-origin-ps-00.

PREVENTING CALLERID SPOOFING Henning Schulzrinne FCC draft-peterson-secure-origin-ps-00.

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CALLER ID SPOOFING – TECHNICAL CHALLENGES & STANDARDS Henning Schulzrinne FCC.

CALLER ID SPOOFING – TECHNICAL CHALLENGES & STANDARDS Henning Schulzrinne FCC.

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