describedby
broaderTermGeneral
gndIdentifier
gndSubjectCategory
oldAuthorityNumber
(DE-588c)4204751-1
preferredNameForTheSubjectHeading
Durchschaltvermittlung
relatedDdcWithDegreeOfDeterminacy2
variantNameForTheSubjectHeading
Circuit Switching
Leitungsvermittlung
Line Switching