Part 51 - INTERCONNECTION
- Subpart A - GENERAL INFORMATION (§§ 51.1 — 51.5)
- Subpart B - TELECOMMUNICATIONS CARRIERS (§ 51.100)
- Subpart C - OBLIGATIONS OF ALL LOCAL EXCHANGE CARRIERS (§§ 51.201 — 51.233)
- Subpart D - ADDITIONAL OBLIGATIONS OF INCUMBENT LOCAL EXCHANGE CARRIERS (§§ 51.301 — 51.335)
- Subpart E - EXEMPTIONS, SUSPENSIONS, AND MODIFICATIONS OF REQUIREMENTS OF SECTION 251 OF THE ACT (§§ 51.401 — 51.405)
- Subpart F - PRICING OF ELEMENTS (§§ 51.501 — 51.515)
- Subpart G - RESALE (§§ 51.601 — 51.617)
- Subpart H - RECIPROCAL COMPENSATION FOR TRANSPORT AND TERMINATION OF TELECOMMUNICATIONS TRAFFIC (§§ 51.700 — 51.717)
- Subpart I - PROCEDURES FOR IMPLEMENTATION OF SECTION 252 OF THE ACT (§§ 51.801 — 51.809)
- Subpart J - TRANSITIONAL ACCESS SERVICE PRICING (§§ 51.901 — 51.919)