Throughout the design, development, and implementation of Next Generation 911 (NG911), one fundamental requirement has remained true: to achieve interoperability across the entire public safety communications ecosystem, NG911 implementations must adhere to a standard. For many years now, the 911 community has agreed that the NG911 standard is the National Emergency Number Association’s (NENA) Detailed Functional and Interface Standards for the NENA i3 Solution, commonly known as "NENA i3."
The first version of the standard, NENA 08-003, was ratified in June 2011. Since then, the standard was renumbered as NENA-STA-010.2-2016 when it was last updated in 2016. Later this year, NENA plans to revise the standard yet again expects American National Standards Institute (ANSI) ratification once again.