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STU-III (Secure Telephone Unit - third generation) is a family of secure telephones introduced in 1987 by the NSA for use by the United States government, its contractors, and its allies. STU-III desk units look much like typical office telephones, plug into a standard telephone wall jack and can make calls to any ordinary phone user (with such calls receiving no special protection, however). When a call is placed to another STU-III unit that is properly set up, one caller can ask the other to initiate secure transmission. They then press a button on their telephones and, after a 15-second delay, their call is encrypted to prevent eavesdropping. There are portable and militarized versions and most STU-IIIs contained an internal modem and RS-232 port for data and fax transmission. Vendors w

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rdf:type	yago:WikicatNationalSecurityAgencyEncryptionDevices yago:WikicatSecureTelephones yago:Artifact100021939 yago:Device103183080 yago:ElectronicEquipment103278248 yago:Equipment103294048 yago:Instrumentality103575240 yago:Object100002684 yago:PhysicalEntity100001930 yago:Telephone104401088 yago:Whole100003553
rdfs:label	STU-III (en) STU-III (ru) STU-III (uk)
rdfs:comment	STU-III (Secure Telephone Unit - third generation) is a family of secure telephones introduced in 1987 by the NSA for use by the United States government, its contractors, and its allies. STU-III desk units look much like typical office telephones, plug into a standard telephone wall jack and can make calls to any ordinary phone user (with such calls receiving no special protection, however). When a call is placed to another STU-III unit that is properly set up, one caller can ask the other to initiate secure transmission. They then press a button on their telephones and, after a 15-second delay, their call is encrypted to prevent eavesdropping. There are portable and militarized versions and most STU-IIIs contained an internal modem and RS-232 port for data and fax transmission. Vendors w (en) STU-III (аббр. от англ. Secure Telephone Unit, Third Generation) — семейство безопасных телефонных модулей, являющихся устройствами . Разработан Агентством национальной безопасности США в 1987 году для использования правительством Соединенных Штатов и их союзниками. STU-III позволяет осуществлять голосовые коммуникации на уровне «совершенно секретно». (ru) STU-III (аббр. від англ. Secure Telephone Unit, Third Generation) — сімейство безпечних телефонних модулів, які є пристроями шифрування голосового зв'язку. Розроблений Агентством національної безпеки США в 1987 році для використання урядом Сполучених Штатів і їх союзниками. STU-III дозволяє здійснювати голосові комунікації на рівні «цілком таємно». (uk)
foaf:depiction
dcterms:subject	National Security Agency encryption devices Secure telephones
Wikipage page ID	794541 (xsd:integer)
Wikipage revision ID	1107518551 (xsd:integer)
Link from a Wikipage to another Wikipage	Public key cryptography Electronic Key Management System Encryption Modem Defense Courier Service Integrated Services Digital Network Communication during the September 11 attacks SIPRNET National security OMNI (SCIP) Classified information Motorola NORAD NSA Cryptanalysis Secure telephone Lucent Fax Asymmetric cryptography Zeroisation AT&T Corporation EEPROM Federal Aviation Administration Firefly (protocol) Digital signature KG-84 KOV-14 KY-3 Registered mail National Security Agency encryption devices Secure telephones BATON Classified information in the United States Public Switched Telephone Network RCA RS-232 Secure transmission Crypto Ignition Key St. Thomas University (Florida) Secure Communications Interoperability Protocol Secure Terminal Equipment Scrambler Type 1 encryption Type 2 encryption Type 4 encryption SIGSALY L-3 Communications Voice over IP STU-II PCMCIA card KSD-64A COMSEC Type 3 encryption
Link from a Wikipage to an external page	https://fas.org/irp/program/security/_work/stu3.html http://www.tscm.com/STUIIIhandbook.html http://www.tscm.com/stu.html https://web.archive.org/web/20081016010739/http:/www2.hawaii.edu/~wes/ICS623/Reports/WYip.html
sameAs	STU-III STU-III STU-III STU-III STU-III STU-III
dbp:wikiPageUsesTemplate	dbt:Citation_needed dbt:More_citations_needed dbt:Reflist dbt:Short_description dbt:Cryptography_navbox dbt:National_Security_Agency
thumbnail	wiki-commons:Special:FilePath/STU_III_secure_telephone_1.jpg?width=300
has abstract	STU-III (Secure Telephone Unit - third generation) is a family of secure telephones introduced in 1987 by the NSA for use by the United States government, its contractors, and its allies. STU-III desk units look much like typical office telephones, plug into a standard telephone wall jack and can make calls to any ordinary phone user (with such calls receiving no special protection, however). When a call is placed to another STU-III unit that is properly set up, one caller can ask the other to initiate secure transmission. They then press a button on their telephones and, after a 15-second delay, their call is encrypted to prevent eavesdropping. There are portable and militarized versions and most STU-IIIs contained an internal modem and RS-232 port for data and fax transmission. Vendors were AT&T (later transferred to Lucent Technologies), RCA (Now L-3 Communications, East) and Motorola. STU-III are no longer in service with the U.S. Government, with the last cryptographic keys for the units expiring on December 31, 2009. It has been replaced by the STE (Secure Terminal Equipment) and other equipment using the more modern Secure Communications Interoperability Protocol (SCIP). (en)

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