![]() MCX services standardization was initiated in 2013 through the creation of a new working group, System Architecture WG6 - SA6, with the responsibility to define, develop, and maintain the technical specifications for MCX services standards including Mission Critical Push-To-Talk (MCPTT), Mission Critical Data (MCData), and Mission Critical Video (MCVideo) services. In order to meet the expectations of PS agencies, a technical body responsible for 4G and 5G standards-the 3 rd Generation Partnership Project (3GPP)-became a home for global MCX services standards. As a result, PS agencies around the world have turned their attention to mobile broadband technologies such as 4G and 5G for the future of critical communications. ![]() These include demands for interoperability across diverse public safety networks, support for multimedia capabilities, and other emerging communication paradigms. While traditional narrow-band Land Mobile Radio (LMR) technologies such as TETRA and P25 systems have been capable of meeting push-to-talk (PTT) voice requirements, they are unable to meet the fast-changing needs of critical communications infrastructure. Public Safety (PS) agencies around the world, specifically first-responders such as police, firefighters, and medical services, rely on critical communications to respond to emergencies, with stringent requirements to ensure a responsive, robust, and secure network for their successful operations. ![]() Mission Critical (MCX) services refer to broadband critical communications applications and the underlying infrastructure that supports public protection and disaster relief management.
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