Yeastar TG400L LTE/4G VoIP Gateway (TG400L)

The Yeastar TG400L LTE/4G VoIP Gateway is a powerful 4-channel mobile gateway designed to connect 4G LTE networks with IP-based telephone systems. Built for small to medium-sized businesses, it enables seamless integration of mobile and VoIP communications while reducing call costs and improving business continuity. With advanced call routing, VoLTE support, and bulk SMS capabilities, the TG400L delivers a reliable and flexible communication solution that ensures uninterrupted connectivity even during landline outages.

Product Features

Cost-Effective Call Routing

The TG400L enables mobile-to-mobile calling and Least Cost Routing (LCR), allowing businesses to route calls through the most economical network and significantly reduce telecommunication expenses.

Reliable LTE Backup Connectivity

Designed as a fallback solution, the gateway automatically switches to the 4G LTE network when landlines or SIP trunks fail, ensuring uninterrupted voice communication and business continuity.

High Interoperability

The gateway supports SIP and IAX2 protocols, making it compatible with a wide range of IP-PBX systems, softswitches, and SIP servers, including Elastix and Microsoft Lync Server.

Bulk SMS and USSD Support

A web-based interface allows sending and receiving SMS messages, including bulk messaging for marketing and customer engagement. An Open API enables integration with external SMS applications, along with USSD functionality.

Easy Web-Based Management

The intuitive graphical user interface allows simple configuration, monitoring, and management, reducing deployment time and ongoing administrative effort.

High-Definition Voice Quality

Support for VoLTE ensures high-quality HD voice calls, while ITU-T G.168 echo cancellation eliminates echo and enhances call clarity.

Advanced Call Handling

The TG400L includes flexible incoming and outgoing routing rules, call duration limits, call transfer, callback functionality, and caller ID or CLIR support for professional call management.

Product Specifications

• Product Type: 4-channel LTE/4G VoIP Gateway
• Mobile Channels: 4 LTE ports
• Network Support: 4G LTE with 3G UMTS/HSPA+ and 2G GSM/GPRS/EDGE fallback
• Frequency Bands: Region-dependent LTE and UMTS frequency support
• Ethernet Interface: 1 x 10/100 Mbps Ethernet port
• VoIP Protocols: SIP v2 (RFC3261), IAX2
• Transport Protocols: UDP, TCP, TLS, SRTP
• Voice Codecs: G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM, Speex
• Echo Cancellation: ITU-T G.168 LEC
• DTMF Modes: RFC2833, SIP INFO, In-band
• SMS and USSD: Send and receive SMS, bulk SMS support, Open API integration
• Network Protocols: FTP, TFTP, HTTP, HTTPS, SSH, DHCP, Static IP, VLAN, DDNS, QoS, OpenVPN
• Security: Firewall, IP and MAC filtering, DoS attack prevention, TLS and SRTP encryption
• Dimensions: 213 x 160 x 44 mm
• Power Supply: AC 100–240V, 50–60Hz (DC 12V, 1A)
• Operating Temperature: 0°C to 40°C
• Storage Temperature: -20°C to 65°C
• Humidity: 10 to 90 percent non-condensing