Yeastar tg400 4 ports GSM VoIP gateway

The Yeastar TG400 is a 4-port GSM VoIP gateway produced by Yeastar, a company specializing in telecommunications solutions. This VoIP GSM gateway is designed to bridge the gap between GSM cellular networks and VoIP networks, allowing businesses and individuals to make and receive calls over GSM networks using VoIP infrastructure. Here are the key features and functions of the Yeastar TG400 4-Port GSM VoIP gateway:

1. GSM Ports: The Yeastar TG400 comes with four GSM ports, each supporting a standard GSM SIM card. These ports allow you to connect the gateway to GSM cellular networks.
2. VoIP Protocol Support: It supports the SIP (Session Initiation Protocol) standard for VoIP communication, making it compatible with various VoIP equipment, including IP-PBX systems, SIP-based phones, and VoIP service providers.
3. Call Routing: The TG400 serves as an interface between GSM and VoIP networks, allowing you to route calls between them. It converts voice signals between GSM and VoIP formats.
4. Voice Codecs: The gateway supports a range of voice codecs to ensure high-quality voice communication, including G.711A, G.711U, G.729, AMR, and more.
5. Configuration and Management: Yeastar typically provides a web-based user interface for easy configuration and management of the TG400 gateway. This interface allows you to set up SIP trunks, manage call routing rules, and configure other parameters.
6. SIM Card Management: The gateway often includes features for monitoring SIM card status, balance, and usage, ensuring efficient management of the SIM cards.
7. Compatibility: The TG400 is designed to work seamlessly with various IP-PBX systems, SIP trunking services, and VoIP service providers, offering flexibility in using GSM as a backup or primary connectivity option.
8. Call Features: Similar to a standard VoIP phone system, the Yeastar TG400 may support standard call features such as call waiting, call transfer, call forwarding, caller ID, and more.
9. Security: Security features, including SIP user authentication and encryption, are typically included to protect the VoIP network and ensure call privacy.
10. Remote Management: Some models of the TG400 may offer remote management capabilities, allowing you to monitor and configure the gateway remotely.
11. Load Balancing: The gateway may include load balancing features to distribute calls across multiple SIM cards or GSM channels, providing redundancy and improved call quality.
12. SMS Support: It may support sending and receiving SMS messages over the GSM network, which can be useful for various applications, including text notifications and alerts.