Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:business_telephone_system
|
| gptkbp:features |
modular design
digital switching support for ISDN |
| gptkbp:introduced |
1980s
|
| gptkbp:manufacturer |
gptkb:AT&T
|
| gptkbp:marketedAs |
gptkb:PBX_system
|
| gptkbp:relatedTo |
AT&T System 25
AT&T System 75 |
| gptkbp:successor |
gptkb:Definity_PBX
|
| gptkbp:usedIn |
large enterprises
|
| gptkbp:bfsParent |
gptkb:System_85
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
AT&T System 85
|