Automatic Secure Voice Communications Network
Encyclopedia
Automatic Secure Voice Communications Network (acronym AUTOSEVOCOM): A worldwide, switched, secure voice network developed to fulfill DoD
United States Department of Defense
The United States Department of Defense is the U.S...

 long-haul, secure voice
Secure voice
Secure voice is a term in cryptography for the encryption of voice communication over a range of communication types such as radio, telephone or IP.-History:...

 requirements. See AUTOVON
Autovon
AUTOVON, short for Automatic Voice Network, was an American military phone system built in 1963 to survive nuclear attacks. AUTOVON was first established in the United States, using the Army's SCAN system. Around the mid-1970s AUTOVON expanded to the United Kingdom, Asia, the Middle East, and Panama...

for a similar, but non-secure voice system.
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