Statements (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
telephone exchange system
|
| gptkbp:developedBy |
gptkb:British_Post_Office
|
| https://www.w3.org/2000/01/rdf-schema#label |
APT telephone exchange
|
| gptkbp:introducedIn |
1960s
|
| gptkbp:replacedBy |
gptkb:System_X
|
| gptkbp:status |
obsolete
|
| gptkbp:technology |
electronic telephone exchange
|
| gptkbp:usedFor |
automatic telephone switching
|
| gptkbp:usedIn |
gptkb:United_Kingdom
|
| gptkbp:bfsParent |
gptkb:Ericsson_telephone_exchange
|
| gptkbp:bfsLayer |
6
|