Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
private branch exchange
|
| gptkbp:alsoKnownAs |
gptkb:SL-1
|
| gptkbp:countryOfOrigin |
gptkb:Canada
|
| https://www.w3.org/2000/01/rdf-schema#label |
SL-1 PBX
|
| gptkbp:introducedIn |
1975
|
| gptkbp:manufacturer |
gptkb:Northern_Telecom
|
| gptkbp:marketedAs |
gptkb:SL-1
|
| gptkbp:notableFor |
first fully digital PBX
|
| gptkbp:successor |
gptkb:Meridian_1
|
| gptkbp:type |
digital PBX
|
| gptkbp:usedFor |
business telephone systems
|
| gptkbp:bfsParent |
gptkb:Nortel
|
| gptkbp:bfsLayer |
6
|