Yeastar TG400L 4 Port 4G LTE GSM gateway

The Yeastar TG400L is a 4-port LTE VoIP gateway designed to connect IP-based phone systems to the mobile network, enabling high-quality voice and SMS communication over 4G LTE, 3G, or GSM. Each port supports one SIM card, allowing up to four concurrent mobile calls with flexible routing, backup, and cost-saving options.

Ideal for small and medium businesses, call centers, and remote branches, the TG400L supports SIP v2.0 for seamless integration with IP-PBX platforms such as Asterisk, FreePBX, 3CX, and Yeastar P-Series. It also supports SMS/USSD functions via HTTP API, making it suitable for messaging services and mobile-based applications.

The gateway is built with VoLTE support for HD voice, automatic fallback to 3G/2G networks, and robust failover features, ensuring consistent connectivity even during carrier or network transitions. The web-based GUI makes configuration simple, while its compact form factor and low power consumption make it a perfect fit for modern VoIP infrastructures.

Key Features

• 4-channel LTE/3G/GSM voice gateway (VoLTE-ready)

• SIP v2.0 compliant for seamless IP-PBX and softswitch integration

• Supports SMS, USSD, and HTTP API messaging services

• Hot-swappable SIM cards for flexible carrier management

• Intelligent Least Cost Routing (LCR) and call control

• Supports call forwarding, black/white list, and caller ID display

• Dual Ethernet ports for LAN/WAN separation

• Web-based GUI for easy management

• Secure SIP/TLS and SRTP encryption

• Compact, durable metal chassis for long-term operation

Future-Proof Advantage
The Yeastar TG400L is built to adapt as mobile networks evolve. With VoLTE capability and multi-band LTE support, it’s ready for all-IP voice transitions while maintaining compatibility with 3G and GSM. It offers reliable voice, SMS, and data connectivity for hybrid and distributed VoIP deployments — a true future-proof gateway for today and tomorrow.

???? Technical Specifications (Magento “Specifications” or Tab Section)

Model
Yeastar TG400L

Mobile Interfaces

• 4 SIM slots (4 mobile channels)

• LTE (4G): FDD Bands 1 / 3 / 5 / 7 / 8 / 20 / 28 (region-dependent)

• WCDMA (3G): Bands 1 / 2 / 5 / 8

• GSM: 850 / 900 / 1800 / 1900 MHz

• VoLTE support (carrier-dependent)

• Automatic fallback to 3G/2G

VoIP Protocols

• SIP v2.0 (RFC 3261) over UDP / TCP / TLS

• RTP / SRTP, STUN, NAT traversal

• Codecs: G.711 A/u-Law, G.722, G.726, G.729A/B

Voice & Call Features

• Mobile ↔ VoIP call bridging

• Least Cost Routing (LCR)

• Call forwarding, call transfer, call waiting, call restriction

• SMS and USSD over HTTP API

• SMS to email / email to SMS

• Blacklist / whitelist filtering

• Caller ID and DTMF detection

Network Interfaces

• 2 × 10/100 Base-T Ethernet (RJ45)

• 4 × SMA connectors for LTE antennas

• 1 × Console port for maintenance

Management & Maintenance

• Web GUI (HTTP/HTTPS) and Telnet access

• Remote management via SSH

• Firmware upgrade via HTTP / TFTP

• Syslog and event monitoring

• Backup and restore configuration

• SNMP supported

Security & QoS

• SIP over TLS and SRTP encryption

• G.168 echo cancellation (up to 128 ms)

• Adaptive jitter buffer, VAD, CNG

• IP access control and firewall rules

Power & Environmental

• Power input: 100–240 V AC, 50/60 Hz

• Typical consumption: < 20 W

• Operating temperature: 0 °C – 40 °C

• Storage temperature: –20 °C – 80 °C

• Humidity: 10 % – 90 % non-condensing

Physical

• Dimensions: 200 × 160 × 42 mm

• Weight: ≈ 0.8 kg

• Mounting: desktop or rack shelf

Applications

• SME mobile trunking for IP-PBX systems

• Call centers and remote office gateways

• Mobile backup trunk for SIP systems

• SMS and USSD service applications

• VoLTE-to-VoIP hybrid deployments

Compliance

• CE, FCC, RoHS certified