Arlington VA (November 3, 2026) – The Telecommunications Industry Association (TIA) TR-8.19 Engineering Committee on Wireline System Interfaces has issued a call for interest for document TIA-102.BACD-B-4, initially titled “Inter-RF Subsystem Interface (ISSI) Messages and Procedures for Supplementary Data – Addendum 4 – Remotely Activated Emergency”.
TR-8.19 is creating a new addendum to ISSI Supplementary Data Messages and Procedures to include the new Remotely Activated Emergency P25 control-channel message into the list of ISSI supported supplementary data functions.
Stakeholders are invited to contact TIA regarding participation in the development of this and other TIA standards. The stakeholders may include, but are not limited to: LMR radio system manufacturers, testers, administrators, users, and system integrators.
TIA is seeking participation in this process from the user and general interest communities.
For more information about TR-8 and how to participate in standards development with TIA, contact our Membership Department at MEMBERSHIP@tiaonline.org.
About TIA
The Telecommunications Industry Association (TIA) advances trusted digital infrastructure for a connected world. Representing more than 400 companies globally, TIA brings industry and government together through standards development, government advocacy, certifications, and industry programs to support resilient, innovative infrastructure. Accredited by the American National Standards Institute (ANSI), TIA plays a central role in shaping the future of global digital infrastructure.
Media Contact: Urvi Shah, ushah@tiaonline.org