Joint Standards Development

ATIS Emergency Location Task Force (ELOC TF)

The ELOC TF is made up of members of WTSC and ESIF. It was established to focus on the North American specific aspects for improving emergency location capabilities and services such as location accuracy and operating environments.



IMSESINET is a joint project led by the WTSC Systems and Networks (SN) subcommittee and coordinated with ESIF NGES and PTSC. This joint work includes:

  • Eliminating VoLTE Unnecessary Retries to 911
  • Enhacing Location-Based Routing of Emergency Calls



WTSC's SN and RAN Subcommittees and TIA TR-8.8 are collaborating on public safety mission critical communication interworking between 3GPP broadband systems and Land Mobile Radio (LMR).



WTSC's SN subcommittee and the Telecommunications Industry Association (TIA) TR-45.8 subcommittee began work on the joint Commercial Mobile Alert System (CMAS) in 2008. This project, "JCMAS", has published multiple standards including the Commercial Mobile Alerts Service (CMAS) Specification for GSM/UMTS Using Cell Broadcast Service (ATIS-0700006), Implementation Guidelines and Best Practices for GSM/UMTS Cell Broadcast Service (ATIS-0700007), and Certification and Testing of the CMAS C-Interface (J-STD-102).



Collaboration to develop an SMS to 9-1-1 service has begun between WTSC SN and TIA TR-45.8. The output of this joint project, "JSMS911", allows an SMS text user to use the publicly known 9-1-1 emergency short code to begin text communication with a Public Safety Answering Point (PSAP).