Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:smartphone
|
| gptkbp:alsoKnownAs |
TXE4
|
| gptkbp:controls |
ferrite core memory
|
| gptkbp:countryOfOrigin |
gptkb:United_Kingdom
|
| gptkbp:developedBy |
gptkb:Post_Office_Telecommunications
|
| https://www.w3.org/2000/01/rdf-schema#label |
TXE4 telephone exchange
|
| gptkbp:introducedIn |
1970s
|
| gptkbp:locationOfFirstDeployment |
gptkb:Leighton_Buzzard
|
| gptkbp:notableFeature |
first large-scale electronic exchange in UK
|
| gptkbp:predecessor |
Strowger exchange
|
| gptkbp:replacedBy |
digital telephone exchanges
|
| gptkbp:successor |
gptkb:System_X
|
| gptkbp:switchingType |
reed relay switching
|
| gptkbp:technology |
electronic telephone exchange
|
| gptkbp:usedFor |
public telephone network
|
| gptkbp:usedUntil |
1990s
|
| gptkbp:bfsParent |
gptkb:Thorn_EMI_Data_Systems
|
| gptkbp:bfsLayer |
8
|