DTMF Tone Decoder
Dual-Tone Multi-Frequency decoder extracts dialed digits from telephone line audio signals. Designed for telephonic apparatus connection, under HTS 8543.70.60.00.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general audio processing
Non-telephonic audio falls under microphone amplifiers.
If other signal processing without telephony spec
General decoders classify as other electrical apparatus.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• ITU-T Q.24 DTMF signaling compliance documentation
• FCC emissions testing for line-connected devices
• Emphasize telephony audio decoding function
Related Products under HTS 8543.70.60.00
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