{"data":{"id":"us/47-cfr-64.6303","jurisdiction":"us","citation":"47 CFR 64.6303","heading":"Caller ID authentication in non-IP networks.","body":"(a) Except as provided in §§ 64.6304 and 64.6306, not later than June 30, 2021, a voice service provider shall either:\n(1) Upgrade its entire network to allow for the initiation, maintenance, and termination of SIP calls and fully implement the STIR/SHAKEN framework as required in § 64.6301 throughout its network; or\n(2) Maintain and be ready to provide the Commission on request with documented proof that it is participating, either on its own or through a representative, including third party representatives, as a member of a working group, industry standards group, or consortium that is working to develop a non-internet Protocol caller identification authentication solution, or actively testing such a solution.\n(b) Except as provided in § 64.6304, not later than June 30, 2023, a gateway provider shall either:\n(1) Upgrade its entire network to allow for the processing and carrying of SIP calls and fully implement the STIR/SHAKEN framework as required in § 64.6302(d) throughout its network; or\n(2) Maintain and be ready to provide the Commission on request with documented proof that it is participating, either on its own or through a representative, including third party representatives, as a member of a working group, industry standards group, or consortium that is working to develop a non-internet Protocol caller identification authentication solution, or actively testing such a solution.\n(c) Except as provided in § 64.6304, not later than December 31, 2023, a non-gateway intermediate provider receiving a call directly from an originating provider shall either:\n(1) Upgrade its entire network to allow for the processing and carrying of SIP calls and fully implement the STIR/SHAKEN framework as required in § 64.6302(e) throughout its network; or\n(2) Maintain and be ready to provide the Commission on request with documented proof that it is participating, either on its own or through a representative, including third party representatives, as a member of a working group, industry standards group, or consortium that is working to develop a non-internet Protocol caller identification authentication solution, or actively testing such a solution.","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER B—COMMON CARRIER SERVICES","PART 64—MISCELLANEOUS RULES RELATING TO COMMON CARRIERS","Subpart HH—Caller ID Authentication"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-47.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:28Z","sha256":"2735cfeaf68179f49c241b0816f7eabbf7edfc82d507f0910d176ff4ed612508","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-64.6302","next":"us/47-cfr-64.6304"},"notice":"GroundRules: Original legal text. Not legal advice."}