Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:secure_telephone_device
|
| gptkbp:developedBy |
gptkb:National_Security_Agency
|
| gptkbp:encryption_type |
analog encryption
|
| gptkbp:introduced |
1970s
|
| gptkbp:predecessor |
gptkb:STU-I
|
| gptkbp:replacedBy |
digital secure telephones
|
| gptkbp:successor |
gptkb:STU-II
gptkb:STU-III |
| gptkbp:used_in |
gptkb:Cold_War
gptkb:United_States_government |
| gptkbp:usedFor |
secure voice communication
|
| gptkbp:bfsParent |
gptkb:DoD_Secure_Voice_Services
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
Secure Telephone Unit
|