U.S. flag

An official website of the United States government

Government Website

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Safely connect using HTTPS

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

  1. Home
  2. About DHS
  3. Site Links
  4. Keywords
  5. Emergency Communication

Emergency Communication

Last Updated: | Publication

P25 CAB AB Auth Agreement

This Compliance Assessment Bulletin identifies conditions and criteria for DHS authorization of accreditation bodies to provide accreditation to P25 CAP laboratories.

Last Updated: | Publication

P25 CAB Lab Rec Agreement

This Compliance Assessment Bulletin identifies conditions and criteria for DHS recognition of accredited P25 CAP laboratories.

Last Updated: | Blog

Interoperability is Key to Effective Emergency Communications

During National Public Safety Telecommunicators Week, we’re sharing updates on S&T efforts focused on getting first responders the information they need quickly.

Last Updated: | Press Releases

Feature Article: First Responders Need to Know They’ll Be Heard

S&T is teaming with small business to ensure responders can communicate with each other inside large structures.

Last Updated: | Site Page

CISA's SAFECOM Unveils Updated List of Financial Assistance for Emergency Communications

March 2024 CP3 Prevention Connection Newsletter: In partnership with SAFECOM and the National Council of Statewide Interoperability Coordinators (NCSWIC), the Cybersecurity and Infrastructure Security Agency (CISA) updated the List of Federal Financial Assistance Programs Funding Emergency Communications.

Last Updated: | Press Releases

Feature Article: What if Law Enforcement Could ‘See’ Through Walls?

S&T is developing a tool that will enhance situational awareness when direct line-of-sight is not an option.

Last Updated: | Publication

Testing Requirements

This document defines various aspects of P25 CAP, including new Participating Equipment Manufacturer Requirements to maintain equipment on the Approved (Grant-Eligible) Equipment list.

Last Updated: | Press Releases

Feature Article: Picturing the Future of Firefighting

S&T is guiding responders through darkness with real-time indoor visualization technology.

Last Updated: | Press Releases

Feature Article: SAGE Advice—S&T Collaborates with Canada on Emergency Response Best Practices

The Science Advice and Guidance for Emergencies (SAGE) Program gives both nations the tools to better prepare for cross-border emergencies.

Last Updated: | Publication

P25 ISSI/CSSI Conformance Test Tool Validation CAB

The purpose of this document is to clearly convey the procedures, requirements, and guidance used by the Department of Homeland Security Science & Technology (DHS S&T) P25 Compliance Assessment Program (P25 CAP) for approving and recognizing an Inter-subsystem interface/Console sub-system interface (ISSI/CSSI) Conformance Test Tool (ICCTT) for the conduct of the P25 Compliance assessment.