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ABOUT BELL SYSTEM TELEPHONES (BSTL) ACCESS CONTROL
Bell System (Telephones) Ltd, a UK manufacturer, offer a complete range of audio and video entry systems for the UK domestic market.
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ABOUT BELL SYSTEM TELEPHONES (BSTL) ACCESS CONTROL
Bell System (Telephones) Ltd, a UK manufacturer, offer a complete range of audio and video entry systems for the UK domestic market.