Centrex lines

GPTKB entity

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