47 C.F.R. § 64.3001 Obligation to transmit 911 calls.
Title 47 - Telecommunication
All telecommunications carriers shall transmit all 911 calls to a PSAP, to a designated statewide default answering point, or to an appropriate local emergency authority as set forth in §64.3002.
Title 47: Telecommunication
PART 64—MISCELLANEOUS RULES RELATING TO COMMON CARRIERS
Subpart AA—Universal Emergency Telephone Number
§ 64.3001 Obligation to transmit 911 calls.