Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:telephone_switch
|
| gptkbp:developedBy |
gptkb:Western_Electric
|
| gptkbp:introduced |
1970s
|
| gptkbp:location |
gptkb:United_States
|
| gptkbp:replacedBy |
electromechanical switches
|
| gptkbp:technology |
gptkb:electronic_switching_system
|
| gptkbp:usedBy |
gptkb:Bell_System
|
| gptkbp:usedFor |
local telephone service
|
| gptkbp:usedIn |
gptkb:telephone_networks
|
| gptkbp:bfsParent |
gptkb:Bell_System
|
| gptkbp:bfsLayer |
5
|
| https://www.w3.org/2000/01/rdf-schema#label |
No. 3 ESS switch
|