8518.40.10.00/E&M Audio Interface Repeater/Mexico

E&M Audio Interface Repeater from Mexico

Audio-frequency repeater with E&M signaling interface for PBX trunk lines, amplifying 4-wire audio paths in telephony interconnects. Essential for legacy TDM voice systems. HTS 8518.40.10.00 for line telephony repeater function.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter

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Import Tips

• Specify E&M Type I/II/III/V interface compatibility in docs

• SF signaling detection specs distinguish from general audio amps

• Export control verification needed for crypto-enabled variants