Development of Nontactical Secure Voice Systems

LCD-78-129-II: Published: Sep 29, 1978. Publicly Released: Oct 30, 1978.

Additional Materials:


Office of Public Affairs
(202) 512-4800

The Department of Defense (DOD) and the North Atlantic Treaty Organization (NATO) are developing military tactical and nontactical secure voice systems; civil agencies are also developing a secure voice system. Rather than planning on the use of widely available narrowband networks for the nontactical system, DOD has sought "direct" (as opposed to "acceptable") interoperability with wideband tactical systems. After the Appropriations Committee directed development of a common-user system, DOD proposed a hybrid nontactical system concept. The Senate Committee accepted this concept, but the House Committee again directed DOD to use an all-narrowband worldwide concept. GAO supports the narrowband concept. Areas of difference with DOD are in system economies, survivability considerations, systems interoperability, NATO planning, and performance and technology trends. GAO believes that the economic and survivability advantages of a single nontactical narrowband secure voice system for military and civil agency users outweighs the advantages associated with having commonality and direct interoperability between tactical and nontactical military wideband systems. The hybrid alternative is not justified since it is more costly than the all-wideband alternative and provides little improvement in survivability.

Sep 8, 2020

Jan 23, 2020

Dec 19, 2019

  • budget icon, source: GAO

    State and Local Governments' Fiscal Outlook:

    2019 Update
    GAO-20-269SP: Published: Dec 19, 2019. Publicly Released: Dec 19, 2019.

Nov 14, 2019

Oct 16, 2019

Jun 26, 2019

Apr 10, 2019

Mar 27, 2019

Mar 22, 2019

Feb 27, 2019

Looking for more? Browse all our products here