---
kind: "unit"
title: "47"
title_heading: "Telecommunication"
key: "chI/subchB/part20"
level: "part"
label: "Part 20"
heading: "Commercial Mobile Services"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/47/chI-subchB-part20"
sections_count: 14
---

# Part 20 — Commercial Mobile Services

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

## Sections

- [§20.1-20.2. Reserved](/cfr/47/20.1-20.2.md)
- [§20.3. Definitions.](/cfr/47/20.3.md)
- [§20.5. Citizenship.](/cfr/47/20.5.md)
- [§20.6-20.9. Reserved](/cfr/47/20.6-20.9.md)
- [§20.11. Interconnection to facilities of local exchange carriers.](/cfr/47/20.11.md)
- [§20.12. Resale and roaming.](/cfr/47/20.12.md)
- [§20.13. State petitions for authority to regulate rates.](/cfr/47/20.13.md)
- [§20.15. Requirements under Title II of the Communications Act.](/cfr/47/20.15.md)
- [§20.18. Reserved](/cfr/47/20.18.md)
- [§20.19. Hearing loss compatible wireless handsets.](/cfr/47/20.19.md)
- [§20.20. Conditions applicable to provision of CMRS service by incumbent Local Exchange Carriers.](/cfr/47/20.20.md)
- [§20.21. Signal boosters.](/cfr/47/20.21.md)
- [§20.22. Rules governing mobile spectrum holdings.](/cfr/47/20.22.md)
- [§20.23. Contraband wireless devices in correctional facilities.](/cfr/47/20.23.md)