47 CFR 9.32: Designation of NG911 Delivery Points.

A 911 Authority may designate one or more NG911 Delivery Points where originating service providers must deliver 911 traffic to the ESInet pursuant to § 9.29, provided that—

(a) Each NG911 Delivery Point is located in the same State or territory as the PSAPs connected to the ESInet; and

(b) The 911 Authority or the ESInet provides facilities at the input to the NG911 Delivery Point to receive 911 traffic in accordance with the applicable phase.