Yeastar TG400L – 4-Port LTE VoIP Gateway

• Equipped with 4 LTE ports supporting up to four simultaneous voice calls over 4G networks for reliable mobile connectivity

• Bridges LTE mobile networks with SIP-based VoIP systems, enabling smooth two-way communication between cellular and IP telephony

• Supports SIP protocol for seamless integration with IP PBX platforms such as Asterisk, FreePBX, 3CX, and other standard systems

• Designed for VoLTE support where available, delivering improved voice quality over LTE networks

• Enables Least Cost Routing to automatically route calls through the most economical LTE or VoIP path

• Advanced inbound and outbound call routing rules based on time conditions, caller ID, or dial patterns

• Supports SMS sending and receiving via LTE SIM cards for business notifications and communication workflows

• Built-in web-based management interface for easy configuration, monitoring, and remote administration

• Supports multiple voice codecs including G711, G722, G726, and G729 for optimized bandwidth and clear audio

• Provides LTE fallback connectivity to maintain business communication if SIP trunk or internet fails

• Strong security features including firewall, TLS, and SRTP encryption to safeguard voice traffic

• Single 10/100 Mbps Ethernet port for stable LAN integration with your PBX or VoIP network

• Supports USSD functions for SIM balance checks and mobile network management

• Compact, rack-friendly design suitable for SMEs, branch offices, and call center deployments

• Ideal for businesses looking to leverage 4G LTE networks for better coverage, stability, and cost control