Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
electromechanical telephone switch
|
| gptkbp:developedBy |
gptkb:Bell_Labs
|
| https://www.w3.org/2000/01/rdf-schema#label |
No. 5XB switch
|
| gptkbp:introducedIn |
1940s
|
| gptkbp:phasedOutIn |
1980s
|
| gptkbp:replacedBy |
gptkb:No._1XB_switch
electronic switching systems |
| gptkbp:technology |
crossbar switch
|
| gptkbp:usedFor |
automatic telephone switching
|
| gptkbp:usedIn |
gptkb:North_America
telephone exchanges |
| gptkbp:bfsParent |
gptkb:Bell_System
|
| gptkbp:bfsLayer |
5
|