Interworking is the term for communications interoperability between Land Mobile Radio devices used by First Responders today and new Mission Critical Push to Talk applications on mobile phones running on LTE Networks including FirstNet™. Interworking has long been considered a key component of FirstNet™ adoption, as public safety organizations will need a migration strategy as they and allied agencies move to FirstNet™. These agencies will require simultaneous dispatch and device to device communications between LMR and LTE during the transition.
IntelliLink™ Interworking is a standards compliant solution, designed to deliver the mission-critical voice communications traditionally transmitted via LMR systems to users communicating across LMR and LTE networks. This level of robustness is required by first responders seeking to introduce LTE based mission critical push-to-talk communications into their operations.
IntelliLink™ Interworking interfaces to LTE Networks that support MCPTT through a 3GPP standard interface. The LMR radio interfaces can be flexibly assigned. In addition to the P25 ISSI interface, IntelliLink™ Interworking will interface to P25 systems through DFSI, to Digital Mobile Radio (DMR) systems through the AIS interface, and to other legacy radio systems through Catalyst’s family of analog and digital control station interfaces.
For selecting LMR and LTE talk groups and LMR channels, a simple user interface is provided so that communications between these entities is easily established. A dispatch console is not required. As another option, choose to incorporate IntelliLink™ Interworking technology into Catalyst’s IP|Console™ and Propulsion™ Dispatch Consoles for a single user experience that manages LMR to LMR Interoperability and LMR to LTE Interworking.
In 2018, Catalyst was awarded a Phase I contract by the United States Department of Homeland Security (DHS) Science and Technology Directorate to investigate standards-based Interworking that would enable mission critical communications between First Responders using Land Mobile Radio (LMR) systems and cellular devices over Long Term Evolution (LTE) Networks with push to talk applications. With the announcement in April 2019 that Catalyst had been awarded a $1 Million Phase II contract from DHS S&T to develop a prototype based upon the results of the Phase I research, Catalyst began development of a comprehensive solution. IntelliLink™ Interworking is the first product developed from this program.