9-1-1 Core Services

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NENA Development Group



This committee will focus on the 9-1-1 system core functions and interfaces necessary to accurately route and deliver 9-1-1 calls (voice, text, images, sensors, and video) and caller location data to the correct PSAP supporting the geographic location of the caller; and the acquisition by the PSAP, or responders, of additional data and information related to a call, a caller, or the incident being reported.

This committee will identify and define the IP protocols and interfaces necessary to support interoperability between 9-1-1 systems and to support the communications methods and devices currently in common use by the general public that could reasonably be expected to support an emergency request for assistance.



Terry Reese
Ericsson, Inc.


Steve O'Conor ENP
Next Generation 9-1-1 Consulting Services, LLC.


    • Workgroups  
      • i3 Architecture, Co-Chairs Brian Rosen & Steve O'Conor ENP                   This Working Group is responsible for the ongoing development and evolution of the NENA i3 standard for NG9-1-1 that provides call and data handling functionality between 9-1-1 call originators and 9-1-1 call centers (PSAPs), with an emphasis on i3 Emergency Services IP Networks (ESInets)/Next Generation Core Services (NGCS). Major topics being addressed in version 3 of the standard include: (1) Network routing, performance and security; (2) Core, ancillary, and transitional functions; (3) Data definition, including location, GIS, and additional data, including REST/JSON schema definition; (4) Next generation 9-1-1 PSAP multimedia call and data delivery interfaces; and (5) Interfaces to support test calls and testing of Policy Rules. ANSI project initiation notice was published in May 2015 for version 3. Review process initiated in 2Q2018. Calls are Thursdays at 10:30 am to 1:00 pm ET.  


      • Conveyance of Emergency Incident Data Object (EIDO), Co-Chairs Henry Unger,  Tony Dunsworth & Rick Blackwell ENP    The Conveyance of EIDO Working Group is focusing on the development of an ANSI accredited NENA/APCO Standard for transporting (conveying) Emergency Incident Data Documents (EIDOs) between systems (FEs). The new Standard under development by this NENA/APCO working group will define how EIDOs are exchanged and transported within and between PSAP agencies, as well as with other stakeholders. Expertise in information sharing and specifically in using web services and other protocols is desired. Operational expertise familiar with the needs for exchanging data between call takers and dispatchers, emergency responders and other user systems is also highly sought. Participation and contributions are sought from technical and operational subject matter experts. ANSI project initiation notice was published in May 2015. Calls are Fridays at 2-3 pm ET.  


      • E2 Interface Working Group, Co-Chairs Dan Banks & Steve O'Conor ENP     The E2 Interface Working Group will update NENA 05-001, NENA Standard for the Implementation of the Wireless Emergency Service Protocol E2 Interface. Last updated in 2003, this document references TIA J-STD-036-A, which has since been revised and updated, most recently by J-STD-036-C-2, published in June 2017. This revised document should be the definitive document describing the E2 interface and should be sufficiently detailed and accurate to allow implementations without requiring access to closed standards. The workgroup will also consider clarifications or changes in support of delivering improved location to both legacy and transitional i3 environments. Calls are Tuesdays at 11 am to 12:00 pm ET.


      • NG9-1-1 Emergency Services IP Networks & Public Safety Broadband Networks Interconnection Working Group, Co-Chairs  Michael Smith & TBD        Next Generation 9-1-1 (NG9-1-1) Emergency Services IP Networks (ESInets) and Public Safety Broadband Networks (PSBNs), like the National Public Safety Broadband Network that supports FirstNet, are both being designed with the objective of providing Public Safety with improvements in existing systems and services as well as supporting a broad range of new service capabilities. Greater benefit to Public Safety, and to the public they serve, will be possible with the interconnection of these complementary networks. NG9-1-1 ESInets and Public Safety Broadband Networks  depend on an infrastructure that is built on reliable broadband connectivity. To achieve interoperability between NG9‑1‑1 ESInets and any external network that hosts responder devices and applications, multiple issues must be resolved in areas such as:
        • Topology/Network Architecture
        • IP Addressing
        • Identity
        • Security
        • Resiliency
        • Traffic Priority
        • Performance
        • Interfaces/Protocols

        While no specific knowledge is required to join the work group, subject matter expertise in the areas of network interconnection and security will be critical to advancing the work of this group.  In addition, it is critical that this work group include representatives of stakeholder groups from 9-1-1 , as well as providers of Public Safety Broadband Networks. 



      Standards & Documents for this Committee