Statements (18)
Predicate | Object |
---|---|
gptkbp:instanceOf |
telephone switch
|
gptkbp:alsoKnownAs |
gptkb:4ESS
|
gptkbp:architecture |
time-space-time switching
|
gptkbp:basedOn |
gptkb:No._4_Crossbar_switch
|
gptkbp:controls |
gptkb:1A_processor
|
https://www.w3.org/2000/01/rdf-schema#label |
4ESS switch
|
gptkbp:introduced |
1976
|
gptkbp:location |
gptkb:United_States
|
gptkbp:manufacturer |
gptkb:Western_Electric
|
gptkbp:replacedBy |
analog crossbar switches
|
gptkbp:status |
largely retired
|
gptkbp:successor |
gptkb:5ESS_switch
|
gptkbp:technology |
digital electronic switching
|
gptkbp:usedBy |
gptkb:AT&T
|
gptkbp:usedFor |
long-distance telephone switching
|
gptkbp:usedIn |
gptkb:public_switched_telephone_network
|
gptkbp:bfsParent |
gptkb:5ESS_Switch
|
gptkbp:bfsLayer |
6
|