Yeastar TG400L 4‑Port LTE/4G VoIP Gateway
The Yeastar TG400L is a 4‑port LTE/4G VoIP gateway that bridges cellular networks (4G/LTE/3G/GSM) with SIP‑based telephony systems, supports VoLTE HD voice, SMS/USSD, echo cancellation, and web‑based management — ideal for SMBs adding mobile trunking or reliable failover connectivity.
Description
Yeastar TG400L — 4‑Port 4G LTE VoIP Gateway for Mobile Trunking & Fallback
The Yeastar TG400L 4‑Port LTE/4G VoIP Gateway is a versatile telephony device designed to integrate LTE/4G mobile networks with SIP-based VoIP systems. It allows businesses to leverage cellular networks for voice communication, providing cost-effective trunking, failover redundancy, and expanded connectivity where traditional PSTN lines are unavailable or limited.
Featuring 4 independent LTE/4G channels, the TG400L supports multiple simultaneous calls and flexible call routing between GSM/4G trunks and VoIP extensions. Its web-based management interface simplifies setup, configuration, and monitoring, while full SIP protocol support ensures broad compatibility with IP-PBX platforms such as Asterisk, FreePBX, and Yeastar S-Series VoIP PBX.
Ideal for small offices, retail locations, remote sites, and mobile-centric businesses, the TG400L delivers high-quality voice, reliable mobile integration, and intelligent call routing for a seamless communication experience.
Key Features:
4 × LTE/4G Ports: Four independent 4G LTE channels for connecting mobile networks to VoIP systems.
Mobile Trunking & Fallback: Enables voice traffic and mobile connectivity for business communication and acts as a reliable failover option when landlines or SIP trunks are unavailable.
VoLTE HD Voice: Supports VoLTE for high‑definition mobile voice calls over LTE.
SIP & IAX2 Protocols: Works with SIP v2.0 and IAX2, ensuring compatibility with major PBX platforms.
Multi‑Network Support: Integrates 4G, 3G (WCDMA), and GSM cellular networks for broad carrier compatibility.
Web‑Based Management: Intuitive browser interface for configuration, monitoring, and administration.
Echo Cancellation & Quality Enhancements: Built‑in echo cancellation and quality voice codecs improve call clarity.
SMS & USSD Support: Send/receive SMS or USSD via web interface or API for messaging needs.
Flexible Integration: Interoperable with Yeastar PBX, Asterisk, FreePBX, 3CX, Elastix, and other SIP/IP‑PBX systems.
Hardware & Technical Specs:
Model: Yeastar TG400L 4‑Port LTE/4G VoIP Gateway
LTE Channels: 4 LTE/4G ports for mobile trunking and data connectivity.
Protocols Supported: SIP v2.0, IAX2 for call control.
Voice Codecs: G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM, Speex (varies by firmware and region).
DTMF Modes: RFC2833, SIP INFO, In‑band.
Transport & Security: UDP, TCP, TLS, SRTP support (varies by firmware).
Network Interfaces: At least one Ethernet LAN port (10/100 Mbps) for connection to IP‑PBX and network.
Management: Web-based GUI, remote configuration via HTTP/HTTPS.
Mobile Bands: GSM 850/900/1800/1900 MHz; UMTS and LTE bands vary by region.
Power Supply: AC 100–240V (often with DC 12V/1A adapter).
Physical Dimensions: ~213 × 160 × 44 mm.
Operating Temp: Typically 0°C – 40°C; humidity tolerance varies by vendor.
Technical Datasheet
You can download the full technical documentation for this product from the link below:
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