P25 Phase 2 CAP Testing Documents Finalized, 4 Labs Receive New Recognition
Tuesday, August 08, 2017 | Comments
The Department of Homeland Security (DHS) Office of Interoperability and Compatibility (OIC) finalized new documents that will allow Project 25 (P25) Phase 2 interoperability testing under the Compliance Assessment Program (CAP), and half the P25 CAP labs are now recognized by the new accreditation bodies.

The 2017 Baseline Common Air Interface (CAI) Testing Requirements Compliance Assessment Bulletin (CAB) is online. An accompanying comment matrix outlines the comments received. Users will find the accompanying summary test report (STR) and suppliers’ declaration of compliance (SDoC) templates on the P25 CAP Bulletins page.

The 2017 Baseline CAI CAB adds requirements for TDMA performance testing, TDMA trunking interoperability testing and trunking supplementary data testing to the requirements already included in the 2016 baseline CAI testing requirements CAB.

Manufacturers are encouraged to test equipment to the 2017 CAI CAB as soon as they can, but manufacturers can test equipment to the 2016 CAI testing requirements through February 2018. In addition, all 2010 SDoCs and other documents must come down by the end of February 2018, said Sridhar Kowdley, program manager of the P25 CAP for DHS Science and Technology (S&T) Directorate.

DHS OIC understands that it will take time for participating P25 CAP test laboratories to prepare for these additional tests, and no labs are ready to run TDMA testing yet, Kowdley said.

Four labs — Motorola Solutions’ Schaumburg, Illinois, and Plantation, Florida, labs; Harris’ Lynchburg, Virginia, lab; and the TIMCO Engineering lab in Newberry, Florida — now have 2017 scope of recognition. However, the labs are not yet recognized to run TDMA tests.

Compliance Testing, EF Johnson Technologies, Tait Communications and another Motorola Schaumburg lab have not been accredited since 2010. In 2013 DHS announced that the American Association for Laboratory Accreditation, ANSI-ASQ National Accreditation Board and International Accreditation New Zealand would conduct P25 CAP laboratory accreditation.

In addition, the OIC published a draft minimum feature requirements CAB for a 30-day public comment period. Industry should send all comments to p25cap@hq.dhs.gov by Aug. 21.

DHS OIC will review the comments and contact the submitters with any questions. After evaluating the comments received and making any changes to the CABs, DHS OIC will determine whether to publish the updated CAB or to solicit another round of comments.

DHS OIC expects to release an Inter RF Subsystem Interface (ISSI)/Console Subsystem Interface (CSSI) CAB later this year. During the call, members said they expect the ISSI/CSSI CAB to be released for comments in September.

In March, DHS published a CAB that aims to stop the practice of manufacturers providing subscriber units with a non-P25 standard encryption without also including P25 standard Advanced Encryption Standard (AES) 256 encryption.

During an Aug. 8 webinar, officials also discussed the interoperability rule of three, which requires CAP testing to be conducted among at least three vendors. Kowdley said DHS is open to proposals for alternatives that would be less cumbersome and expensive for vendors but not compromise the validity of the tests.

A P25 CAP advisory panel meeting will be held Aug. 16 in Denver. More information is available here.

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