Repeater Bus Interface Circuit Board from China
Digital signal processing board for line repeaters of subheading 8518.40.10, providing equalization, gain control, and impedance matching. Meets HTS 8518.90.20.00 as parts of telephone line repeaters. Supports T1/E1 carrier systems up to 2.048 Mbps.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Specify carrier frequency and impedance (75/120Ω) to confirm repeater classification
• Provide BER test results demonstrating <10^-9 error rate performance
• Comply with NEBS Level 3 environmental requirements for carrier-grade imports