HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
---|---|---|---|---|---|
8537109170 | Doc | 57.7% | CN | US | 2025-05-12 |
8537109160 | Doc | 57.7% | CN | US | 2025-05-12 |
8535904000 | Doc | 57.7% | CN | US | 2025-05-12 |
8535908060 | Doc | 57.7% | CN | US | 2025-05-12 |
8543706000 | Doc | 55.0% | CN | US | 2025-05-12 |
8543906500 | Doc | 55.0% | CN | US | 2025-05-12 |
Voice Gateway
A voice gateway is a device or software that converts analog voice signals into digital data packets for transmission over an IP network, and vice versa. It serves as a bridge between traditional telephony systems (PSTN, PBX) and modern Voice over Internet Protocol (VoIP) networks.
Material & Components:
Voice gateways typically consist of hardware components including:
- Analog Interface Cards: These cards provide ports for connecting to traditional phone lines (FXS/FXO ports).
- Digital Interface Cards: Support connections to digital telephony systems like T1/E1 lines, ISDN BRI/PRI.
- Network Interface Cards (NIC): Enable connectivity to IP networks (Ethernet).
- Processor & Memory: Handle signal processing, call control, and data routing.
- Power Supply: Provides necessary power.
- Software: Embedded software manages call processing, codec support, and network communication. Some gateways utilize software-based solutions running on standard servers.
Purpose:
- Connectivity: Enable communication between traditional phone systems and VoIP networks.
- VoIP Migration: Facilitate a phased migration to VoIP without replacing existing telephony infrastructure entirely.
- Cost Reduction: Lower long-distance and international call costs by utilizing VoIP.
- Feature Enhancement: Integrate advanced VoIP features (call recording, voicemail to email, etc.) with existing systems.
- Centralization: Consolidate multiple sites’ telephony systems into a centralized VoIP network.
Function:
- Analog-to-Digital Conversion: Converts analog voice signals from phones or PBX systems into digital packets.
- Digital-to-Analog Conversion: Converts digital packets received over the IP network into analog voice signals.
- Codec Support: Utilizes various codecs (G.711, G.729, iLBC, etc.) to compress and decompress voice data.
- Call Control: Manages call setup, teardown, and routing. Typically utilizes SIP (Session Initiation Protocol) or H.323 protocols.
- Network Address Translation (NAT) Traversal: Enables communication through firewalls and NAT devices.
- Security: Provides security features like encryption and authentication.
- DTMF Relay: Transmits Dual-Tone Multi-Frequency (DTMF) signals for user input.
Usage Scenarios:
- Small Businesses: Connect existing analog phones to a VoIP service provider.
- Enterprise Networks: Integrate multiple branch offices’ telephony systems into a centralized VoIP network.
- Call Centers: Connect traditional phone lines to a VoIP-based call center platform.
- Service Providers: Offer VoIP services to customers with existing analog phone systems.
- Remote Offices: Enable remote workers to connect to the corporate telephony system.
- Asterisk/Open Source PBX Integration: Connect analog or digital lines to open-source PBX systems.
Common Types:
- Analog Gateways (FXS/FXO):
- FXS (Foreign Exchange Station): Connects to analog phones.
- FXO (Foreign Exchange Office): Connects to PSTN lines.
- Digital Gateways (T1/E1/ISDN): Connects to digital telephony systems.
- IP Gateways: Purely software-based gateways running on servers.
- Multi-Port Gateways: Support multiple analog and/or digital ports.
- SIP Gateways: Utilize the SIP protocol for call control.
- H.323 Gateways: Utilize the H.323 protocol for call control (less common now).
- Hybrid Gateways: Support both analog, digital, and VoIP interfaces.
Based on the provided information, a voice gateway falls under the category of electrical machines and apparatus with individual functions not specified elsewhere. Here's a breakdown of relevant HS codes:
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8543706000: Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Other machines and apparatus: Articles designed for connection to telegraphic or telephonic apparatus or instruments or to telegraphic or telephonic networks.
- Chapter 85: Electrical machinery and equipment.
- Heading 8543: Electrical machines and apparatus having individual functions, not specified or included elsewhere in this chapter.
- Subheading 854370: Other machines and apparatus.
- Further specification 85437060: Articles designed for connection to telegraphic or telephonic apparatus or instruments or to telegraphic or telephonic networks. This code specifically covers items used with telephone systems, which includes voice gateways.
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8543906800: Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Parts: Other: Printed circuit assemblies: Other.
- Chapter 85: Electrical machinery and equipment.
- Heading 8543: Electrical machines and apparatus having individual functions, not specified or included elsewhere in this chapter.
- Subheading 854390: Parts.
- Further specification 85439068: Other: Printed circuit assemblies: Other. If the voice gateway is being imported as a component (e.g., a printed circuit board), this code may be applicable.
Tax Information:
- For 8543706000, the base tariff is 0.0%, with an additional tariff of 25.0%. After April 2, 2025, the additional tariff will increase to 30.0%, resulting in a total tariff of 55.0%.
- For 8543906800, the base tariff is 0.0%, with an additional tariff of 25.0%. After April 2, 2025, the additional tariff will increase to 30.0%, resulting in a total tariff of 55.0%.