TCCA represents all standard mobile critical communications technologies and complementary applications. Our Members are drawn from end users, operators and industry across the globe. We believe in and promote the principle of open and competitive markets worldwide through the use of open standards and harmonised spectrum, and we provide the forum for all with an interest in mission-critical and business-critical communications. Within the Association there are a number of Working Groups that have been formed to specifically address important activities in support of the Association's objectives. TCCA Members can participate in the Working Groups, which include: Broadband Industry Group (BIG) Critical Communications Broadband Group (CCBG) Legal and Regulatory Working Group Marketing Group SCADA, Telemetry and Smart Grid Working Group Security and Fraud Prevention Group (SFPG) Technical Forum (TF) TETRA Applications Group TETRA Industry Group TCCA also has a close relationship with ETSI, and is the 3GPP Market Representation Partner for critical communications. Our annual flagship event is Critical Communications World: www.critical-communications-world.com See our full events programme at https://tcca.info/events_pages/events/