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%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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