Statements (13)
Predicate | Object |
---|---|
gptkbp:instanceOf |
telephone switch
|
gptkbp:countryOfOrigin |
gptkb:United_States
|
gptkbp:developedBy |
gptkb:Western_Electric
|
https://www.w3.org/2000/01/rdf-schema#label |
No. 2 ESS switch
|
gptkbp:introducedIn |
1970s
|
gptkbp:predecessor |
gptkb:No._1_ESS_switch
|
gptkbp:replacedBy |
electromechanical switches
|
gptkbp:technology |
electronic switching system
|
gptkbp:usedBy |
gptkb:Bell_System
|
gptkbp:usedFor |
automated telephone call switching
|
gptkbp:usedIn |
telephone exchanges
|
gptkbp:bfsParent |
gptkb:Bell_System
|
gptkbp:bfsLayer |
5
|