Description
The Yeastar NeoGate TG400G is a 4-port GSM VoIP gateway designed to connect GSM mobile networks with VoIP / SIP telephony systems. It’s a practical solution for businesses that need to route calls between mobile networks and IP-based phone systems, reduce call costs to mobile numbers, or add GSM trunking and backup communication to an existing PBX environment.
The TG400G supports 4 GSM channels / 4 SIM cards, allowing simultaneous mobile-to-VoIP and VoIP-to-mobile communication. It is commonly used in small and medium businesses, call centers, branch offices, retail, service centers, and organizations with high mobile call traffic. By integrating GSM connectivity into an IP telephony environment, the gateway helps businesses lower mobile call expenses and maintain more flexible voice routing.
The gateway supports SIP and IAX2 protocols, making it compatible with a wide range of IP PBX systems, softswitches, hosted PBX platforms, and unified communications environments. It also includes telephony features such as intelligent call routing, SMS sending/receiving, bulk SMS support, callback, least cost routing (LCR), caller ID handling, and web-based management.
For voice performance, the TG400G supports codecs including G.711 a/u-law, G.726, G.729A, GSM, ADPCM, and Speex, along with ITU-T G.168 echo cancellation, DTMF via RFC2833 / SIP INFO / In-band, and reliable media transport over UDP, TCP, TLS, and SRTP. It also supports OpenVPN, VLAN, QoS, DDNS, firewall, static IP, DHCP, and STUN, helping it fit into modern enterprise networks securely and efficiently.
Hardware-wise, the TG400G includes 4 GSM ports, support for 4-in-1 antenna splitter, and 2 × 10/100 Mbps Ethernet interfaces in the TG400 hardware family. It is designed as a compact desktop/rack-compatible gateway that can serve as a GSM trunking solution, mobile call cost-saving gateway, or backup communication device when landline or SIP connectivity is limited.
Overall, the Yeastar TG400G is a reliable 4-channel GSM VoIP gateway for businesses that want to connect mobile networks to IP telephony, improve call routing flexibility, and reduce telecom costs in a SIP-based communication environment.
| Specification | Details |
|---|---|
| Brand | Yeastar |
| Model | NeoGate TG400G |
| Product Type | GSM VoIP Gateway / Mobile-to-VoIP Gateway |
| Gateway Type | GSM to VoIP / VoIP to GSM |
| Number of GSM Channels | 4 |
| SIM Capacity | 4 SIM cards |
| Supported Mobile Network | GSM / 3G / 4G depending on module type / region |
| Protocol | SIP, IAX2 |
| Transport | UDP, TCP, TLS, SRTP |
| Voice Codecs | G.711(a/u), G.726, G.729A, GSM, ADPCM, Speex |
| DTMF Modes | RFC2833, SIP INFO, In-band |
| Echo Cancellation | ITU-T G.168 LEC |
| Calling Type | Termination (VoIP to GSM), Origination (GSM to VoIP) |
| SMS Features | SMS send/receive, bulk SMS support |
| Routing Features | Least Cost Routing (LCR), intelligent call routing, callback |
| LAN Interfaces | 2 × 10/100 Mbps Ethernet interfaces |
| NAT Traversal | Static NAT, STUN |
| Network Features | DHCP, DDNS, Firewall, OpenVPN, Static IP, QoS, Static Route, VLAN |
| Management | Web GUI, HTTP, FTP, TFTP, SSH |
| Antenna Splitter | 4-in-1 antenna splitter supported |
| Power Supply | AC 100–240V |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 65°C |
| Humidity | 10% to 90% non-condensing |
| Dimensions | 340 × 210 × 44 mm |
| Typical Use | GSM trunking, mobile call routing, PBX backup, SIP-to-GSM connectivity |
