Telephone Answering Machine Control Microprocessor from Canada
Custom programmed microprocessor that manages call detection, message recording triggers, and remote access functions specifically for telephone answering machines under heading 8521. It handles protocols like DTMF tone decoding unique to voicemail systems. Classified in 8522.90.58.80 as other specialized parts for these devices.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit firmware code excerpts proving answering machine-specific functions like beep detection
• Avoid common error of classifying as general CPUs; highlight proprietary voicemail OS integration
• Ensure country-of-origin marking on ICs complies with substantial transformation rules