Statements (55)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:telecommunications_company
|
| gptkbp:alsoKnownAs |
gptkb:plain_old_telephone_service_(POTS)
|
| gptkbp:component |
cellular networks
fiber optic cables satellite links transmission towers undersea cables telephone lines microwave transmission links switching centers |
| gptkbp:connectsTo |
emergency services
public telephones business telephones private branch exchanges (PBX) residential telephones |
| gptkbp:fullName |
gptkb:smartphone
|
| https://www.w3.org/2000/01/rdf-schema#label |
PSTN
|
| gptkbp:originatedIn |
late 19th century
|
| gptkbp:regulates |
national telecommunications authorities
|
| gptkbp:replacedBy |
gptkb:VoIP
mobile networks |
| gptkbp:supports |
gptkb:E.164_numbering_plan
gptkb:DSL_internet call forwarding caller ID conference calling voicemail call waiting directory assistance toll-free numbers international direct dialing local calls long-distance calls modem connections operator-assisted calls |
| gptkbp:supportsProtocol |
gptkb:ISDN
gptkb:SS7 analog signaling digital signaling |
| gptkbp:technology |
circuit-switched network
|
| gptkbp:transitioningTo |
all-IP networks
|
| gptkbp:usedFor |
data transmission
voice communication fax transmission |
| gptkbp:uses |
gptkb:DTMF_(Dual-tone_multi-frequency)_dialing
analog signals digital signals pulse dialing |
| gptkbp:分布地区 |
yes
|
| gptkbp:bfsParent |
gptkb:smartphone
gptkb:H.320 gptkb:E.164 gptkb:G.711 gptkb:V.34 |
| gptkbp:bfsLayer |
5
|