47 C.F.R. § 64.3004 Obligation for providing an intercept message.
Title 47 - Telecommunication
Upon termination of permissive dialing, as provided under §64.3003, telecommunications carriers shall provide a standard intercept message announcement that interrupts calls placed to the emergency service provider using either a seven-or ten-digit emergency number or an abbreviated dialing code other than 911 and informs the caller of the dialing code change.
Title 47: Telecommunication
PART 64—MISCELLANEOUS RULES RELATING TO COMMON CARRIERS
Subpart AA—Universal Emergency Telephone Number
§ 64.3004 Obligation for providing an intercept message.
