---
kind: "unit"
title: "47"
title_heading: "Telecommunication"
key: "chI/subchA/part9"
level: "part"
label: "Part 9"
heading: "911 Requirements"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/47/chI-subchA-part9"
sections_count: 34
---

# Part 9 — 911 Requirements

Title 47 C.F.R. — Telecommunication › Chapter I — Federal Communications Commission › Subchapter A — General

## Contents

- [Subpart A — Purpose and Definitions](/cfr/47/chI-subchA-part9-subpartA.md)
- [Subpart B — Telecommunications Carriers](/cfr/47/chI-subchA-part9-subpartB.md)
- [Subpart C — Commercial Mobile Radio Service](/cfr/47/chI-subchA-part9-subpartC.md)
- [Subpart D — Interconnected Voice over Internet Protocol Services](/cfr/47/chI-subchA-part9-subpartD.md)
- [Subpart E — Telecommunications Relay Services for Persons with Disabilities](/cfr/47/chI-subchA-part9-subpartE.md)
- [Subpart F — Multi-Line Telephone Systems](/cfr/47/chI-subchA-part9-subpartF.md)
- [Subpart G — Mobile-Satellite Service](/cfr/47/chI-subchA-part9-subpartG.md)
- [Subpart H — Resiliency, Redundancy, Interoperability, and Reliability of 911 Communications](/cfr/47/chI-subchA-part9-subpartH.md)
- [Subpart I — 911 Fees](/cfr/47/chI-subchA-part9-subpartI.md)
- [Subpart J — Next Generation 911](/cfr/47/chI-subchA-part9-subpartJ.md)