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August 12, 2016 2:59 pm

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Catalyst Demonstrates Next Generation of P25 Interoperability

Unit ID Transmission from Non-P25 to P25 Subscriber Units is an Industry First

APCO 2016, Orlando, FL – August 12, 2016

Described as a first for public safety radio technology, Catalyst Communications Technologies, Inc. will demonstrate routing the Unit ID from legacy and current subscriber radios to the P25 subscriber unit’s display. This innovation leverages the messaging capabilities of the P25 Digital Fixed Station Interface (DFSI) standard to deliver Unit ID information to a device manufactured by RELM Wireless Corporation and then on to P25 subscriber radios using the P25 Common Air Interface (CAI) Standard. This is the first time legacy radio Unit IDs have been available to P25 subscriber radios without expensive, limiting infrastructure.

Routing Unit IDs between different manufacturers and different frequencies is an important capability for public safety P25 users and a technology breakthrough. During public safety incidents involving multiple organizations on different radio systems, including multiple P25 frequency bands, or in direct mode, it is often critical that first responders know exactly who is speaking over the radio. Similarly, when an organization is transitioning from a legacy radio system to P25, first responders need to know to whom they are talking. The transmission of Unit IDs enables a new level of communications capabilities previously unavailable to First Responders and others requiring critical communications.

The technology development accomplished by Catalyst is an innovation breakthrough, as it is radio manufacturer agnostic and infrastructure independent. The technology allows for the capture of the Unit ID of legacy radios from a broad range of manufacturers using signaling like SmartNet, EDACS, LTR, and MDC 1200, as well as more recent protocols like DMR, NXDN, and P25, across various frequency bands, and routes them all the way to the display of portable and mobile P25 radios in VHF, UHF, and 800 MHz, regardless of the P25 manufacturer.

This solution is deployed in a small, cost effective stand-alone or rack-mounted hardware unit and can be used in conjunction with a Catalyst dispatch console or as a stand-alone product. The new capability is a result the commitment of both Catalyst and RELM to push forward development and technology innovation within the P25 standard.

The demonstration at the Association of Public Safety Communications Officials (APCO) 82nd Annual meeting will take place in Catalyst Booth #1063 throughout the day on August 14 & 15 at the Orlando Convention Center. Catalyst personnel will demonstrate routing Unit IDs from subscriber units using VHF MDC-1200, UHF NXDN, and VHF P25 to 800 MHz P25 radios from different manufacturers. In addition to the transmission of Unit ID across different radio networks, the demonstration will highlight other RELM/Catalyst integrated dispatch features including P25 Unit ID at the Console, Emergency, as well as interoperability between the disparate PTT systems.

Catalyst president, Robin Grier said, “This new capability – a first for P25 – demonstrates our commitment to P25 standards and our relentless pursuit of innovative technology solutions that can improve communications for our First Responders. We’re continually pushing the envelope to this goal”.

The hardware can be mounted in as little as three rack units and is readily transportable. Contact Catalyst or its dealers for more information or to place an order.

Catalyst Communications Technologies, Inc. markets Radio Control over IP technology for the Critical Communications Industry and is a force for change in the effort to bring Internet-derived technologies into Critical Communications applications. Catalyst focuses on products that leverage standard Windows®-based computers to reduce cost and increase the efficiency of network operators and end users. Catalyst’s extensive product line significantly enhances modern and legacy dispatch communications systems by seamlessly bridging wireless and wireline communications networks for network-based interoperability.

Contact Catalyst at or (434) 582-6146 for additional information.

For editorial information, please contact:

John Kramer
Catalyst Communications Technologies, Inc.
(434) 582-6163 or


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