New P25 Dynamic Regrouping Standard, Report on 2014 Progress Released
Monday, November 10, 2014 | Comments

The Project 25 (P25) Steering Committee voted to publish four documents during its meeting last month in Denver. Most importantly, the committee approved a dynamic regrouping standard for the air interface.

The dynamic regrouping function was formerly manufacturer specific. The new P25 dynamic regrouping standard will create a common specification for multivendor interoperability.

In addition, the steering committee approved a revision of the Inter Subsystem Interface (ISSI) interoperability testing procedures to include TDMA. The revision adds a standard testing method of new Phase 2 TDMA interconnected with FDMA systems using the P25 ISSI multisystem interface.

Another document was a revision to the Tier 1 location services under the data section of the standard. The standard was clarified to prevent interoperability issues as more vendors implement P25 location standard data applications.

A revision of the trunking procedures standard under the air interfaces section was approved to correct several errata noted since the last publication.

Following the meeting, the Project 25 Technology Interest Group (PTIG) released a report listing recently published and amended documents in the P25 suite of standards. The update covers all new published documents released in 2014 from January through the October TIA TR-8 meetings.

The four documents approved at the October meeting are listed, along with seven others. They include a document on mission-critical push to talk (PTT) priority and quality of service in broadband, as well as several revisions and an addendum to security standards.

The report also includes P25 standards documents that are in progress, including link layer encryption, a new technology upgrade for improved security for all P25 air interfaces. In addition, work to create the requirement for interworking of broadband and existing P25 systems is underway.

The full report is available here.

PTIG plans future updates of this report following each TIA-TR-8 P25 standards meeting. The next meeting is planned for early February in Phoenix. PTIG is a group of individuals and organizations working to advance the P25 industry standard.

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