Statements (49)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:communication
|
| gptkbp:component |
gptkb:smartphone
subscriber line switching center transmission line end instrument |
| gptkbp:dateOfInception |
1876
|
| gptkbp:enables |
fax transmission
modem communication emergency calling local calling long-distance calling |
| https://www.w3.org/2000/01/rdf-schema#label |
telephone networks
|
| gptkbp:inventedBy |
gptkb:Alexander_Graham_Bell
|
| gptkbp:regulates |
national telecommunications authorities
|
| gptkbp:replacedBy |
mobile networks
internet telephony |
| gptkbp:subjectOf |
network protocols
network security network management network topology telecommunications engineering network reliability network switching network signaling |
| gptkbp:supportsProtocol |
gptkb:ISDN
gptkb:SS7 analog signaling digital signaling |
| gptkbp:type |
gptkb:public_switched_telephone_network
cellular network private branch exchange VoIP network |
| gptkbp:usedFor |
data transmission
voice communication |
| gptkbp:uses |
gptkb:fiber
gptkb:radio_waves satellite links microwave transmission copper wire |
| gptkbp:分布地区 |
yes
|
| gptkbp:bfsParent |
gptkb:pulse-code_modulation
gptkb:No._3_ESS_switch gptkb:A-law gptkb:E1_lines gptkb:T-carrier gptkb:UUCP_for_Usenet_distribution gptkb:Calling_Line_Identification_(CLI) |
| gptkbp:bfsLayer |
6
|