Principal function determines classification for composite network equipment, with switch-dominant goods classified as switching apparatus and not routers.

Composite network equipment is classified by its principal function under the tariff, and data centre switch router models with predominant switching capability fall under tariff item 85176290. A specific customs exemption limited to routers does not apply where the goods are principally switches, even if routing functionality is present. The later concessional duty notification remains available where the goods do not satisfy the notification's express exclusion for carrier-class equipment, and enterprise-type switches outside that exclusion continue to qualify for the benefit.

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Issues: (i) Whether the data centre switch router models were classifiable under tariff item 85176290 of the Customs Tariff. (ii) Whether the goods were entitled to exemption under Notification No. 24/2005-Customs dated 01.03.2005. (iii) Whether the goods were entitled to the concessional duty benefit under Notification No. 57/2017-Customs dated 30.06.2017.

Issue (i): Whether the data centre switch router models were classifiable under tariff item 85176290 of the Customs Tariff.

Analysis: The goods were found to be network equipment capable of switching and routing functions. Applying Rule 1 of the General Rules for Interpretation and Section Note 3 to Section XVI, the classification had to be determined according to the heading terms and the principal function of the composite machine. The product literature described the devices as data centre switches, and the routing element was ancillary to the predominant switching function. Sub-heading 851762 specifically covers switching and routing apparatus, and the 8-digit tariff item 85176290 was held appropriate.

Conclusion: The goods were held classifiable under tariff item 85176290.

Issue (ii): Whether the goods were entitled to exemption under Notification No. 24/2005-Customs dated 01.03.2005.

Analysis: The exemption under Notification No. 24/2005-Customs was limited to routers. The goods, though having routing capability, were principally identified and used as switches. Exemption notifications are to be construed strictly, and where the principal character of the goods is that of a switch, the mere presence of routing functionality does not extend the specific router exemption.

Conclusion: The benefit of Notification No. 24/2005-Customs was held not available.

Issue (iii): Whether the goods were entitled to the concessional duty benefit under Notification No. 57/2017-Customs dated 30.06.2017.

Analysis: The exclusion in Serial No. 20 was examined with reference to carrier ethernet switch and related excluded products. On the record, the goods lacked the essential features of carrier-class equipment and were treated as enterprise-type switches. Since they did not fall within the exclusion list, the concessional rate under the notification remained available.

Conclusion: The goods were held eligible for benefit under Notification No. 57/2017-Customs.

Final Conclusion: The advance ruling settled the classification in favour of the assessee as 85176290, denied the specific router exemption, and allowed the concessional benefit under the later customs notification.

Ratio Decidendi: A composite network device is classified by its principal function under the tariff, and a specific exemption limited to routers cannot be claimed by goods whose dominant character is that of a switch, while a concessional notification remains available if the goods do not fall within its express exclusion.

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