ICE 9: Global Interoperability of Next Generation Emergency Calling Using Internet Multimedia

Save the Date: ICE 9 & NG112 PlugTest 4: February 22-26, 2021

ICE 9 will focus on international / global interoperability testing, jointly sponsoring tests with NENA’s international partner, the European Emergency Number Association (EENA).  NENA and EENA have agreed to hold a joint interoperability test event as the next in the series of ICE events.  Enumerated ICE 9 for NENA, this will also be the fourth NG112 Emergency Communications PlugTest hosted by the European Telecommunications Standards Institute (ETSI), under the auspices of EENA.  Each organization may also choose to perform certain tests above and beyond the scope of joint testing, at their discretion.

The ICE 9 / 4th NG112 PlugTest event will focus on testing end-to-end call flows that span international boundaries.  Nomadic callers, for example, may initiate emergency calls outside of their home countries and IoT devices that are outside of their home countries may do the same.  Emergency calls may also be transferred from one nation’s ESInet to another – for example, when a cell tower near the border in one country receives a call from a device on the other side of the border.

More information on ICE:


Planning Committee



ICE 9 primarily focuses on global / international test scenarios deemed of interest to the global public safety community.  This global system is based on IETF standards created for next generation emergency calling using Internet multimedia. This emerging global IP-based system, intended to replace the traditional telephony-based emergency calling system, has been developed in parallel by both NENA and EENA within their respective geographic spheres of influence, and commercial implementations are starting to be adopted in both geographies.  The time has come for joint testing across international boundaries, to examine and explore interoperability on an international, global basis.

ICE 9 will test:

  • ESInet / NGCS interoperability between US and European environments, with lab-to-lab testing taking place between the NENA ICE lab location and the ETSI lab supporting EENA PlugTests
  • Multimedia communications interoperability over this same infrastructure
  • International peering scenarios

If time and resources permit, the following technologies and functionality may be tested, as well

  • IoT and automatic / machine-initiated emergency calls (for example, personal health monitors, on-board vehicle telematics systems, etc.)
  • STIR/SHAKEN as a mechanism to positively identify the originating data sources.

Within the ICE 9 test scenarios, the following will be utilized:

    • Location-based call routing
    • Multimedia in the form of audio, video, and/or text (i.e. Real-Time Text (RTT) or SMS)
    • Logging and recording
    • LoST hierarchy with ECRFs and Forest Guides
    • Call back
    • Policy-based routing
    • Security mechanisms

ICE 9 will attempt to discover and document issues involving:

  • Data interchange (data formats, encoding, character sets, etc.)
  • Protocol interoperability and conversion
  • SSL certificates and authentication
  • Decentralized identifiers / DIDs
  • Use of JSON and XML data structures over REST interfaces versus SOAP or other interfaces

The planning process for ICE 9 will include development of a test plan, documentation and guidance material for participants, data collection and reporting, and coordination of event logistics.



Plan and execute an event that:

  1. Attracts and encourages the widest possible participation of vendors from across the globe that have products in the focus area (even those outside of the traditional 9‑1‑1 / 112 marketplace).
  2. Allows all participating vendors to test all valid architectures and configurations requested.
  3. Delivers relevant feedback on standards to the appropriate NENA and EENA Technical Committee(s) and identify any gaps in existing standards work.
  4. Allows vendors to better understand the interoperability between their implementations and products developed by other vendors.
  5. Allows for the gathering of relevant results data that will be reported to both NENA Technical Committees AND the EENA Technical and Operations Committee, to other SDOs, and, at a high level, to all interested parties, all in formats appropriate to the target audience.
  6. Produces key findings and recommendations that help to improve the overall global interoperability framework for NG9‑1‑1 /NG112 environments.