Catalyst Communications Technologies and FirstNet, Built with AT&T to Demonstrate Integrated LMR LTE Dispatch and Interworking Communications at APCO 2022

Anaheim, Calif.,  August 8, 2022

Catalyst Communications Technologies, Inc., a leading provider of IP-based dispatch, interoperability and incident command solutions, announced today that it has successfully integrated Catalyst’s LMR LTE Dispatch and Interworking solutions on to FirstNet® – the only network built with and for America’s first responders. Dispatch to both land mobile radio (LMR) subscribers and Smartphone LTE users with 3GPP-compliant Mission Critical Push to Talk (MCPTT) service is being demonstrated this week at APCO 2022 in Anaheim, Calif. and is scheduled to be available in the market later this year.

FirstNet Push-to-Talk (PTT) was developed from the ground up specifically with and for public safety and is the first-ever nationwide mission-critical standards-based push-to-talk solution to launch in the U.S. It is designed to enable public safety to use their smartphones, feature phones, and specialized ultra-rugged devices like they would use a two-way radio, with highly reliable, high-performance calling.

LMR or Land Mobile Radio is traditionally used by public safety, utilities, and others to enable instant voice communications between groups of field personnel.  LTE or Long-Term Evolution enables smart phones and other devices to access voice, high-speed data, and a plethora of powerful applications including instant voice communications between groups.

Catalyst’s public safety grade dispatch solutions provide advanced communications for first responders, managing the call flow to eliminate lost syllables, capture caller IDs, and scales to support dozens of talk groups.  It was developed through contracts with the Department of Homeland Security Science and Technology Directorate and the Department of Commerce’s National Institute of Standards Public Safety Communications Research division in support of standards compliant solutions for Public Safety. MCPTT is a key component in mission-critical LTE networks and an important complement to existing Land Mobile Radio systems. 

“It is my pleasure to announce that Catalyst technology has successfully trialed standards compliant LMR LTE interworking and integrated LMR and LTE Dispatch capabilities with FirstNet PTT .” said Robin Grier, Catalyst President. “We are proud to be working with FirstNet, supporting their mission to bring innovative capabilities to strengthen first responders’ incident response.”

“We understand that first responders need a standards-based mission-critical solution designed specifically to meet their needs to reliably communicate during critical moments,” said Matt Walsh, assistant vice president, product management and development, FirstNet Program at AT&T. “Catalyst meets our highest standards for reliability, security and performance and will bring public safety additional capabilities they need to achieve their mission.”

At APCO, demonstrations and more information can be obtained at the Catalyst booth No. 560, and at AT&T Booth No. 1339.

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) 582-6146 or

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©2022 AT&T Intellectual Property. All rights reserved. FirstNet and the FirstNet logo are registered trademarks and service marks of the First Responder Network Authority. All other marks are the property of their respective owners.

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