---
kind: "unit"
title: "47"
title_heading: "Telecommunication"
key: "chI/subchB/part51"
level: "part"
label: "Part 51"
heading: "Interconnection"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/47/chI-subchB-part51"
sections_count: 81
---

# Part 51 — Interconnection

Title 47 C.F.R. — Telecommunication › Chapter I — Federal Communications Commission › Subchapter B — Common Carrier Services

## Contents

- [Subpart A — General Information](/cfr/47/chI-subchB-part51-subpartA.md)
- [Subpart B — Telecommunications Carriers](/cfr/47/chI-subchB-part51-subpartB.md)
- [Subpart C — Obligations of All Local Exchange Carriers](/cfr/47/chI-subchB-part51-subpartC.md)
- [Subpart D — Additional Obligations of Incumbent Local Exchange Carriers](/cfr/47/chI-subchB-part51-subpartD.md)
- [Subpart E — Exemptions, Suspensions, and Modifications of Requirements of Section 251 of the Act](/cfr/47/chI-subchB-part51-subpartE.md)
- [Subpart F — Pricing of Elements](/cfr/47/chI-subchB-part51-subpartF.md)
- [Subpart G — Resale](/cfr/47/chI-subchB-part51-subpartG.md)
- [Subpart H — Reciprocal Compensation for Transport and Termination of Telecommunications Traffic](/cfr/47/chI-subchB-part51-subpartH.md)
- [Subpart I — Procedures for Implementation of Section 252 of the Act](/cfr/47/chI-subchB-part51-subpartI.md)
- [Subpart J — Transitional Access Service Pricing](/cfr/47/chI-subchB-part51-subpartJ.md)