https://www.taxtmi.com/caselaws?id=48638 An Optical Post-Amplifier Unit (unrepeatered) was held classifiable under Tariff Item 8517 50 99 because its essential function was telecommunication transmission, with optical, electronic and mechanical components operating as one composite apparatus. Amplification was treated as an integral and inseparable part of the device's overall operation, so classification followed its essential character under Heading 8517 rather than a more general apparatus heading. Applying General Rule 1 of the General Rules for Interpretation of the First Schedule to the Customs Tariff Act, the description and function of the goods controlled the tariff placement, and the sub-heading structure of 8517 50 supported that result. en-us Thu, 05 Jan 2006 00:00:00 +0530 Fri, 23 Oct 2015 10:55:00 +0530 TaxTMI RSS Generator https://www.taxtmi.com/caselaws?id=48638 An Optical Post-Amplifier Unit (unrepeatered) was held classifiable under Tariff Item 8517 50 99 because its essential function was telecommunication transmission, with optical, electronic and mechanical components operating as one composite apparatus. Amplification was treated as an integral and inseparable part of the device's overall operation, so classification followed its essential character under Heading 8517 rather than a more general apparatus heading. Applying General Rule 1 of the General Rules for Interpretation of the First Schedule to the Customs Tariff Act, the description and function of the goods controlled the tariff placement, and the sub-heading structure of 8517 50 supported that result. Case-Laws Customs Thu, 05 Jan 2006 00:00:00 +0530 https://www.taxtmi.com/caselaws?id=48638