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P25: The Proven Standard for Public Safety Radio Communications

P25 systems are built with public safety in mind, with increasing adoption across utilities, transportation and federal. These systems work well for everyday communications, yet are specifically designed to meet operational voice and data requirements for critical communications during instances of community disasters, terrorist threats and other natural catastrophes.

P25 interconnectivity conop

EXPLORE THE BENEFITS OF P25

With P25, you can be confident that you have the best radio technology available to meet your communication needs.

  • Delivers exceptional coverage in both urban and rural environments
  • Offers mission-critical grade reliability and performance
  • Enables interoperability between different public safety agencies, transportation and utility at local, state, federal and tribal levels
  • Broad user base including over 3000 public safety, federal or government systems throughout the U.S.
  • Ensures secure voice and data communications including end-to-end 256-bit AES encryption
  • Supports all LMR frequency bands including UHF, VHF, 700/800 and 900 MHz
  • Recognized as an approved radio technology for federal grant applications
  • Provides a diverse range of interoperable products and service choices with various supplier pricing tiers

 

P25 COMPLIANCE ASSESSMENT PROGRAM (CAP)

The P25 Compliance Assessment Program (P25 CAP) provides independent, standardized testing conducted by accredited laboratories to verify that equipment identified under P25 complies with program standards. L3Harris is credited with the first P25-compliant device and has been committed to the program ever since. This testing and documentation instills confidence in the reliability and performance of communications equipment, and ensures seamless interoperability between agencies and organizations. This matters because it isn’t just about meeting criteria; it’s about instilling confidence in the reliability and performance of your communications equipment.

EXPLORE FURTHER:

Resources and Guidelines for Understanding and Navigating the P25 Compliance Assessment

For organizations seeking comprehensive information on standards and compliance test protocols for interoperability and P25 CAP, visit:

Department of Homeland Security (DHS)

Project 25 Technology Interest Group (PTIG)

UNDERSTANDING P25 SYSTEM INTERFACES: THE BACKBONE OF INTEROPERABLE COMMUNICATIONS

A key element to P25 is its defined system interfaces that are integral to building P25 communication networks. P25 defines various interfaces to enable seamless communication between different components within the network including:

P25 Common Air Interface (CIA) icon

COMMON AIR INTERFACE (CAI)
Provides a standard way for P25 subscriber units to communicate with each other and P25 Radio Frequency Subsystems (RFSSs).

P25 Inter Subsystem Interface (ISSI) icon

INTER SUBSYSTEM INTERFACE (ISSI)
Provides a secure interoperable method to interface P25 RFSSs. These RFSSs may be from different manufacturers or the same manufacturer.

P25 Console Subsystem Interface (CSSI) icon

CONSOLE SUBSYSTEM INTERFACE (CSSI)
Provides a secure interoperable method to interface P25 consoles with P25 RFSSs.

 
P25 DIGITAL FIXED STATION INTERFACE (DFSI) icon

DIGITAL FIXED STATION INTERFACE (DFSI)
Provides the capability to interface P25 Conventional systems with Dispatch.

P25 KEY FILL DEVICE INTERFACE (KFD) icon

KEY FILL DEVICE INTERFACE (KFD)
Provides a standard capability to interface a keyloader with 25 Subscriber Units (SU).

 

The defined system interfaces in P25 play a crucial role in ensuring seamless communication and interoperability within P25 networks. They enable different components to communicate effectively, regardless of the manufacturer or agency involved. This standardization promotes efficiency, reliability and enhanced coordination around public safety organizations.

FLEXIBILITY WITH P25

The P25 standard is a mature and versatile technology that can easily adapt to unique user needs and budget constraints. Its flexible configurations make it an ideal choice for various applications, providing a reliable and cost-effective solution for critical communications.

Connect with a product specialist to learn more about P25 compliancy requirements and the right solutions for today and in the future.

CONTACT US

EMT using portable radio with connectivity graphic background

Downloads

  • P25 Compliance Assessment Program Datasheet

    Project 25 Compliance Assessment Program Data Sheet

  • Project 25 Encryption Whitepaper

    Project 25 Encryption Whitepaper

  • XL Series Brochure

    XL Series Brochure

  • XL Series Radio Software Features Catalog

    XL Series Radio Software Features Catalog

  • Pyramid SVR-P252™ Vehicular Repeater Flyer

    Pyramid SVR-P252™ Vehicular Repeater Flyer

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