; and (ii) the most recently required certification under subsection (c) within 30 days after the date on which such certification is due. (5) Emergency communications center The term emergency communications center means a facility that is designated to receive a 9–1–1 request for emergency assistance and perform one or more of the following functions: (A) Process and analyze 9–1–1 requests for emergency assistance and other gathered information. (B) Dispatch appropriate emergency response providers. (C) Transfer or exchange 9–1–1 requests for emergency assistance and other gathered information with other emergency communications centers and emergency response providers. (D) Analyze any communications received from emergency response providers. (E) Support incident command functions. (6) Emergency response provider The term emergency response provider has the meaning given that term under section 2 of the Homeland Security Act ( 47 U.S.C. 101(6) ), emergency response providers includes Federal, State, and local governmental and nongovernmental emergency public safety, fire, law enforcement, emergency response, emergency medical (including hospital emergency facilities), and related personnel, agencies, and authorities). (7) Interoperable The term interoperable or interoperability means the capability of emergency communications centers to receive 9–1–1 requests for emergency assistance and related data such as location information and callback numbers from the public, then process and share the 9–1–1 requests for emergency assistance and related data with other emergency communications centers and emergency response providers, regardless of jurisdiction, equipment, device, software, service provider, or other relevant factors, and without the need for proprietary interfaces. (8) Nationwide The term nationwide means all States of the United States, the District of Columbia, Puerto Rico, American Samoa, Guam, the United States Virgin Islands, the Northern Mariana Islands, any other territory or possession of the