Statements (19)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:telecommunications_company
|
| gptkbp:application |
gptkb:public_switched_telephone_network
telephone exchanges |
| gptkbp:developedBy |
gptkb:Nippon_Telegraph_and_Telephone_Corporation
|
| gptkbp:exportedTo |
other Asian countries
|
| https://www.w3.org/2000/01/rdf-schema#label |
NTT switching systems
|
| gptkbp:introduced |
1970s
|
| gptkbp:notableFor |
D10 digital switching system
D60 digital switching system D70 digital switching system |
| gptkbp:relatedTo |
ISDN deployment in Japan
fiber optic network development |
| gptkbp:replacedBy |
electromechanical switching systems
|
| gptkbp:role |
modernization of Japanese telephone network
|
| gptkbp:technology |
digital switching
electronic switching |
| gptkbp:usedIn |
gptkb:Japan
|
| gptkbp:bfsParent |
gptkb:NT64000_series
|
| gptkbp:bfsLayer |
8
|