Statements (57)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
software
|
| gptkbp:associatedWith |
gptkb:Cold_War
national security signal processing intelligence operations military strategy cryptanalysis information security electronic warfare military technology advancements telecommunications history post-war technology development digital signal processing advancements encryption standards development military communications research secure communications evolution telecommunications security advancements telephony advancements voice encryption technology World_War_II_technology Bell_System_innovations |
| gptkbp:communicationEquipment |
pulse code modulation
|
| gptkbp:component |
analog-to-digital converter
control unit digital-to-analog converter audio processing unit decryption device encryption device |
| gptkbp:decommissioned |
1946
|
| gptkbp:developedBy |
gptkb:Bell_Labs
|
| gptkbp:firstGeneration |
1943
|
| gptkbp:historicalSignificance |
first fully automated secure voice communication system
|
| https://www.w3.org/2000/01/rdf-schema#label |
SIGSALY
|
| gptkbp:influenced |
modern secure communication technologies
|
| gptkbp:influencedBy |
previous secure communication systems
|
| gptkbp:inputOutput |
telephone
|
| gptkbp:legacy |
contributed to the development of modern cryptography
demonstrated feasibility of digital encryption influenced future military communication systems paved the way for digital communication set standards for secure voice communication |
| gptkbp:notableFeature |
real-time communication
automated operation complex setup high level of security limited deployment large physical size resistance to jamming voice quality preservation |
| gptkbp:operatedBy |
operators trained in cryptography
|
| gptkbp:operationalStatus |
gptkb:World_War_II
|
| gptkbp:producedBy |
telephone
|
| gptkbp:replacedBy |
more advanced systems
|
| gptkbp:security |
frequency hopping
|
| gptkbp:successor |
STU-III
|
| gptkbp:technology |
digital encryption
|
| gptkbp:usedBy |
gptkb:United_States_military
|