Coin boxes installed inside buildings generally suffer from interference from back ground noise.  In these cases the coin boxes were installed in silence cabinets, which were effectively kiosks and can still be found in railway stations, hotel lobbies and old factories.  Whilst the BPO supplied many silence cabinets some were provided privately and could be of any design and material. 

For the privately supplied cabinets the building owner was responsible for the installation and maintenance, whilst the BPO supplied and maintained the coin boxes.


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Last revised: January 18, 2016