Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
telephone exchange service
|
| gptkbp:alternativeTo |
on-premises PBX
|
| gptkbp:category |
gptkb:smartphone
business communications |
| gptkbp:competitor |
private branch exchange
|
| gptkbp:feature |
call forwarding
call transfer conference calling voicemail automatic call distribution direct inward dialing |
| https://www.w3.org/2000/01/rdf-schema#label |
Centrex
|
| gptkbp:introducedIn |
1960s
|
| gptkbp:locationOfSwitching |
telephone company central office
|
| gptkbp:marketedAs |
gptkb:AT&T
gptkb:Bell_System |
| gptkbp:provides |
telephone companies
|
| gptkbp:replacedBy |
IP PBX
hosted VoIP |
| gptkbp:usedFor |
business telephone systems
|
| gptkbp:bfsParent |
gptkb:smartphone
|
| gptkbp:bfsLayer |
5
|