US lawFederal (United States)RegulationsTitle 47 CFR — TelecommunicationChapter I — FEDERAL COMMUNICATIONS COMMISSIONPart 1 — PRACTICE AND PROCEDURESubpart E — Complaints, Applications, Tariffs, and Reports Involving Common Carriers1.71147 C.F.R. § 1.711Formal or informal complaints.Last amended: 2016Year: 2026Length: 17 wordsOfficial source Cite as 47 C.F.R. § 1.711 (2026)Complaints filed against carriers under section 208 of the Communications Act may be either formal or informal.Previous47 C.F.R. § 1.703Next47 C.F.R. § 1.716