Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:private_branch_exchange
|
| gptkbp:category |
gptkb:industrial_equipment
PBX systems |
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| gptkbp:introduced |
1970s
|
| gptkbp:manufacturer |
gptkb:AT&T
gptkb:Western_Electric |
| gptkbp:marketedAs |
gptkb:AT&T
gptkb:Western_Electric |
| gptkbp:predecessor |
manual switchboards
|
| gptkbp:replacedBy |
gptkb:System_75
|
| gptkbp:successor |
gptkb:Definity_PBX
|
| gptkbp:technology |
electronic switching
|
| gptkbp:type |
electronic PBX
|
| gptkbp:usedIn |
business telephone systems
|
| gptkbp:bfsParent |
gptkb:System_75
|
| gptkbp:bfsLayer |
7
|
| http://www.w3.org/2000/01/rdf-schema#label |
Dimension PBX
|