DHS-S&T Is Advancing The ISSI And CSSI Conformance Testing Program That Compliance P25 Standards

Date:Mar 01, 2019


The US Department of Homeland Security Science and Technology Directorate(DHS-S&T)  is advancing the Inter Radio Frequency Subsystem (ISSI) and Console Subsystem Interface (CSSI) conformance testing program that compliance Project 25 (P25) standards, while testing and testing tools are in place. Progress has been made in the laboratory. Several documents from the ISSI's Compliance Assessment Program and the CSSI Conformance Test Program will also be open for public comment by the March 14 deadline.

DHS-S&T plans to establish the P25 standard's department of Interior (DOI) laboratory in Denver as the ISSI and CSSI test lab. DHS-S&T has developed an inter-agency agreement, including funding with DOI at the end of last year. The DOI is working hard to obtain certification for testing the P25 standard Compliance Assessment Program(CAP). This certification process for DOI will be the same as for other laboratories tested and is expected to be completed by the end of this year or early next year.

DOI is working to procure consistent automated testing tools from Valid8. The software will also pass the P25 standard CAP certification process. DHS-S&T plans to conduct a series of tests in coordination with DOI, Valid8 and the National Telecommunications and Information Administration (NTIA) before the Valid8 test tool passes the P25 standard CAP certification.

“The plan is a thorough inspection of the Valid8 tool, including any differences in the standard interpretation, and then officially tested by DOI as part of the P25 standard CAP,” said Sridhar Kowdley, DHS-S&T Office Interoperability Project Manager. “DHS-S&T intends to develop the process through test tools very transparently and accurately record what is being tested, so if manufacturers want to develop their own test tools, they will get relevant information.”

The US Department of Homeland Security has developed a draft test document and published a document for review and comment by industry. DHS-S&T will review and determine the comments received. All comments and replies will be posted on the P25 standard CAP website. The final document is expected to be released in June.

The next steps will include verifying these test documents by testing the industry implementation of more CSSI and ISSI equipment this summer and fall. Radio Frequency Subsystem (RFSS) devices conforming to ISSI and CSSI and CSSI-compliant console devices are included in the test program.