Printed circuit assemblies of line telephone handsets; parts of repeaters
Microphones and stands therefor; loudspeakers, whether or not mounted in their enclosures; headphones and earphones, whether or not combined with a microphone, and sets consisting of a microphone and one or more loudspeakers; audio-frequency electric amplifiers; electric sound amplifier sets; parts thereof: > Parts: > Of line telephone handsets of subheading 8518.30.10; of repeaters of subheading 8518.40.10: > Printed circuit assemblies of line telephone handsets; parts of repeaters
Duty Rate (from China)
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
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)
Products classified under HTS 8518.90.20.00
Polycom Handset PCB Assembly
Printed circuit board assembly for Polycom line telephone handsets, containing audio processing chips, microphone interfaces, and speaker drivers. Classified under HTS 8518.90.20.00 as a printed circuit assembly specifically for line telephone handsets of subheading 8518.30.10. Essential component handling analog-to-digital conversion for clear voice transmission.
Cisco IP Phone Handset Audio PCA
Printed circuit assembly for Cisco 7900 series IP phone handsets featuring DSP chips for echo cancellation and noise suppression. Meets HTS 8518.90.20.00 criteria as PCB for line telephone handsets with integrated audio circuitry. Provides wideband audio support up to 7kHz.
Avaya Analog Handset Printed Circuit
Analog line telephone handset PCB assembly from Avaya with sidetone network, DTMF generator, and hookswitch interface. Specifically designed for traditional POTS line telephones under 8518.30.10. Includes surge protection circuitry meeting Telcordia GR-63 standards.
Yealink SIP Handset Audio Board
Yealink T-series SIP telephone handset printed circuit assembly with HD voice codec (Opus/G.722), AEC, and VAD functions. Classified under 8518.90.20.00 for line telephone handset PCBs despite IP connectivity at base. Meets IEEE 802.3af PoE compatibility.
Repeater Bus Interface Circuit Board
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.
Snom Handset Microphone Amplifier PCA
Microphone preamplifier and codec printed circuit assembly for Snom line telephone handsets. Features low-noise ADC, AGC, and comfort noise generation per RFC 3389. HTS 8518.90.20.00 for line telephone handset specific PCBs.
Adtran Channel Bank Repeater Module
Line repeater module for Adtran channel banks containing SLIC, framer, and jitter attenuation circuits. Specifically parts for 8518.40.10 repeaters per HTS 8518.90.20.00. Supports 24-channel T1 with SF/ESF signaling.
Grandstream WP810 Handset PCB
Printed circuit assembly for Grandstream WP810 weatherproof line telephone handset with ruggedized audio processing. Includes bone conduction mic interface and wideband codec. HTS 8518.90.20.00 for line telephone handsets despite outdoor rating.
Tellabs Line Repeater Amplifier Board
Universal line repeater PCB for Tellabs universal shelf systems with automatic gain control and pulse shape correction. Parts of 8518.40.10 repeaters under HTS 8518.90.20.00. Compatible with HDSL/HDSL2 technologies.
Mitel MiVoice Handset Audio Assembly
Mitel MiVoice 6900 series handset printed circuit with Opus codec, noise suppression, and stereo wideband support. Designed for enterprise line telephones under 8518.30.10. HTS 8518.90.20.00 classification for handset-specific PCBAs.