Project 25 Technology Information Group

Monday, January 25, 2021

Project 25 Technology Information Group

The Project 25 Technology Interest Group (PTIG) presented two informative P25 Panels at the recent IWCE Conference. 

Below you will find a description of the panels and links to download the PPT presentations that were offered.


P25 for the Future: New Products, Applications, Interoperability and Security

This was possibly the best PTIG IWCE panel in the last 4 years. The room was standing room only with 110+ attendees and most stayed through the entire 3 hour presentation. Thanks to all of our presenters who did an excellent job.

Download the full PPT below in two parts:

P25 for the Future IWCE 2019 PPT (Part #1)

P25 for the Future IWCE 2019 PPT (Part #2)


Steve Nichols, PTIG Executive Director, began with a PTIG Overview, P25 Website resources, and P25 Documents available. P25 Benefits slides were presented answering “Why are so many PTT users Choosing P25?”

Dominick Arcuri (Televate) then set the stage with an excellent overview of the Standards Process, P25 Interoperability Interfaces and P25 Configurations

Andy Davis, TIA TR-8 Chairman, (Motorola Solutions) followed with his traditional standards Update for the TIA TR-8 Standards Meetings and then detailed the work being done by the TIA/ATIS LMR LTE Joint Project Committee on Interworking between LTE Mission Critical and LMR Services.

Jeremy Elder (Harris) gave a good update of Link Layer Encryption Standards in development and how they will affect existing systems, new users and legacy users. He added the latest update on P25 Key Fill Device standards and Important User Considerations for their application.

Alan Massie (FBI) then took the Encryption topic to reality with a good overview of the FBI System, NLECC SLN Interoperability resources and best practices for SLN assignments.

Keith LaPlant (USCG) followed with an detailed description of the US Coast Guard’s Rescue 21 System including it’s key features, capabilities, coverage and most important, how to work with the USCG for P25 Interoperablity.

Justin Evans (Montgomery County TX ) and Greg Jurrens (Harris County TX) teamed to present an excellent update on ISSI/CSSI Interoperability. They began with a compelling real world example of their experience with ISSI/CSSI Interoperability in Texas. Then added an update on the ongoing work, survey results and P25 resource documents from the ISSI/CSSI User Focus group sponsored by FPIC. PTIG will continue to publish public documents from this key working group.

Cindy Cast, PTIG Chairman, (Miami Dade County), Del Smith (Alaska ALMR), and Greg Jurrens (harris County TX) delivered the next section focused on the ways P25 Sharing can result in Cost Savings for User Agencies. Profiles with specific savings figures were included for a variety of P25 Systems and agencies decisions contrasting the cost to stand alone or share P25 Infrastructure. This will be a great building block for a future whitepaper.

Jim Holthaus (BK Technologies) and Robin Grier (Catalyst) then presented a solid briefing on the use of P25 Connections for Emergency Communications and Mutual Aid. This profiled the nationwide footprint of over 2200 P25 systems available, use of the NIFOG, 37 statewide systems and their Shared Interop talk group plans, and Interworking and Interoperability with P25 LMR and LTE for Emergency Communications, Incident Command and Mutual Aid.

Cheryl Giggetts (CTA Consultants), then offered a snapshot view of the latest P25 New Products and Services for 2019. She brought the technology to life with a dynamic summary of the benefits of each new offering. Thanks to all the PTIG member companies who participated in this section: Intertalk, Compliance Testing, PCTEL, Harris, ICOM, Catalyst, Telex, JVC Kenwood, Unications, Codan, Futurecom, Locus, Valid8, Avtec, Etherstack

Jim Downes: P25 Steering Committee Chairman, closed the panel session with a great overview of Project 25 testing and Compliance. This included the importance of sustainment for P25 LMR systems, a definition of the various levels of Compliance Testing, the CAP program, and the new Non CAP ISSI Interoperability test template.


Project 25 with LTE: Mission Critical PTT Interworking Standards in Development

This timely topic attracted a good audience of 50+ attendees with interest in the future Interworking of PTT between P25 LMR and LTE. Thanks to the panel who did a well-researched update and presentation.

Download the full PPT below:

P25 with LTE Interworking PPT IWCE 2019


Cindy Cast, PTIG Chairman,(Miami Dade County) began with the Overview and User perspective. This included a good definition of the technologies and systems in use today for P25 and LTE. The critical metrics that are used to define LMR systems were presented and a future view was detailed with expectations and requirements from the User perspective for future Interworking.

Jeremy Elder(Harris) then offered an interesting Business Model defining suggested Deployment Models for P25 and LTE MCPTT interworking. A General Model, Carrier-Centric Model, Cloud Deployment Model, and On-Premise Deployment Model were defined with the benefits and challenges of each approach.

Andy Davis,TIA TR-8 Chairman (Motorola Solutions) closed the panel with a detailed update of the work by the ATIS/TIA Joint LMR LTE Joint Project Committee. This included the background, Issue Statement, Current Work, and a functional Model showing the LMR to LTE Interface as defined by the committee. The current definition Document in development was presented with a philosophy and goals for the report that is due in June of 2019.





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