Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
telephone switch
|
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| https://www.w3.org/2000/01/rdf-schema#label |
No. 4A crossbar switch
|
| gptkbp:introduced |
1943
|
| gptkbp:manufacturer |
gptkb:Western_Electric
|
| gptkbp:relatedTo |
No. 1 crossbar switch
|
| gptkbp:replacedBy |
electronic switching systems
|
| gptkbp:switchingType |
crossbar switch
|
| gptkbp:usedBy |
gptkb:Bell_System
|
| gptkbp:usedFor |
toll switching
|
| gptkbp:usedIn |
long-distance telephone networks
|
| gptkbp:bfsParent |
gptkb:No._4ESS_switch
|
| gptkbp:bfsLayer |
6
|