Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:telephone_exchange_service
|
| gptkbp:alternativeTo |
on-premises PBX
|
| gptkbp:category |
gptkb:smartphone
business communications |
| gptkbp:competitor |
gptkb:private_branch_exchange
|
| gptkbp:feature |
call forwarding
call transfer conference calling voicemail automatic call distribution direct inward dialing |
| gptkbp:introducedIn |
1960s
|
| gptkbp:locationOfSwitching |
telephone company central office
|
| gptkbp:marketedAs |
gptkb:AT&T
gptkb:Bell_System |
| gptkbp:provides |
telephone companies
|
| gptkbp:replacedBy |
gptkb:IP_PBX
hosted VoIP |
| gptkbp:usedFor |
business telephone systems
|
| gptkbp:bfsParent |
gptkb:PBX
gptkb:National_Policing_Improvement_Agency gptkb:Private_branch_exchange |
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
Centrex
|