Working Group Membership Directories Call Authentication Trust Anchor (CATA) Working Group 2023-2025 Internet of Things (IoT) Working Group 2023-2025 Numbering Administration Oversight Working Group (NAOWG) 2023-2025 Toll Free: Future Utilization of Numbers (T-FUN) Working Group 2023-2025 Membership Bureau/Office: Wireline Competition Updated: Monday, November 27, 2023