Statements (9)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:smartphone | 
| gptkbp:exchangeCode | gptkb:ARF | 
| gptkbp:locatedIn | gptkb:United_Kingdom | 
| gptkbp:usedIn | gptkb:Greater_London gptkb:London historical UK telephone system | 
| gptkbp:bfsParent | gptkb:Ericsson_telephone_exchange | 
| gptkbp:bfsLayer | 6 | 
| https://www.w3.org/2000/01/rdf-schema#label | ARF telephone exchange |