The Denro ETVS is a fully integrated, distributed microprocessor-controlled, Time Division Multiplexed VCS with extensive redundancy features and built-in diagnostics. It has been selected as the standard VCS for the FAA ......The Denro ETVS is a fully integrated, distributed microprocessor-controlled, Time Division Multiplexed VCS with extensive redundancy features and built-in diagnostics. It has been selected as the standard VCS for the FAA and all branches of the U.S. Department of Defense (DoD).With a long term Federal Aviation Administration (FAA) contract to produce as many as 440 Denro ETVS systems, ETVS will clearly be the most widely used Voice Communication System (VCS). Now with all the key international features and functions added, ETVS is the best VCS solution worldwide.