Title 47 › Chapter 5— WIRE OR RADIO COMMUNICATION › Subchapter II— COMMON CARRIERS › Part I— Common Carrier Regulation › § 227b
Requires the Federal Communications Commission (FCC) to make providers that carry phone calls use a caller-authentication system called STIR/SHAKEN in their internet-protocol networks and to take reasonable steps to use an effective system in non-internet networks. The FCC must do this not later than 18 months after December 30, 2019. The FCC will not force a provider to do this if, not later than 12 months after December 30, 2019, the FCC finds the provider has already adopted, agreed to join, started implementing, or will be able to finish implementing STIR/SHAKEN in IP networks and has taken reasonable steps for non-IP networks by the 18-month deadline. The FCC must report to Congress not later than 12 months after December 30, 2019 on how providers are doing. Every 3 years the FCC must check whether the systems work, update them if needed, and report those findings. The FCC must also look for burdens on small, rural, or older-technology providers and may grant delays for good cause. During any delay, affected providers must run robocall controls and the FCC can force action if a provider keeps originating large-scale illegal robocalls. Providers may not add extra line-item charges to consumers for the required authentication technology. Not later than 12 months after December 30, 2019 the FCC must publish best practices. Not later than 1 year after December 30, 2019 the FCC must make rules about when providers may block calls without extra charges, provide a liability safe harbor for reasonable blocking, set up a way for callers to prove their calls are real, and protect calls from being unfairly blocked when a provider has a compliance delay. The FCC may start other rulemakings under its existing authority. STIR/SHAKEN authentication framework: the industry standards for signing and checking caller identity in IP-based phone networks. Voice service: any service that connects with the public phone network to give voice calls to users, including fax transmissions and real-time two-way voice services, whether over traditional phone lines or internet-based systems.
Full Legal Text
Telegraphs, Telephones, and Radiotelegraphs — Source: USLM XML via OLRC
Legislative History
Reference
Citation
47 U.S.C. § 227b
Title 47 — Telegraphs, Telephones, and Radiotelegraphs
Last Updated
Apr 5, 2026
Release point: 119-73not60