Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:smartphone
|
| gptkbp:category |
business telephony
|
| 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 lines
|
| gptkbp:introducedIn |
1960s
|
| gptkbp:locationOfSwitching |
central office
|
| gptkbp:managedBy |
local exchange carrier
|
| gptkbp:marketedAs |
gptkb:government_agency
universities large organizations |
| gptkbp:provides |
telephone company
|
| gptkbp:replacedBy |
VoIP services
hosted PBX |
| gptkbp:requires |
dedicated telephone lines
|
| gptkbp:usedFor |
business telephone systems
|
| gptkbp:bfsParent |
gptkb:Nortel_Norstar
|
| gptkbp:bfsLayer |
7
|