Yeastar TG400 is a VoIP GSM gateway with 4 channels providing GSM network connectivity for soft switches, and IP-PBXs. It supports two-way communication: VoIP to GSM and GSM to VoIP. Thus the calls costs could be significantly reduced by VoIP or GSM network.

Features
• Rich functionalities
A robust feature set that fulfills your various needs and cuts communication cost
• Easy management
Simple and intuitive Web-based configuration saves you loads of time
• Reliable performance
Stable with advanced hardware and software architecture
• Excellent interoperability
Interoperable with a broad list of softswitch, PBX, and IP-PBX like Elastix and Lync Server

Warranties - Returns:
Money Return:	Repair - Replacement:
20 days	24 months

Specifications
Interface	• 4 GSM • 1 10/100 Mbps Ethernet Interface
Voice Processing	• Protocol: SIP, IAX2 • Transport: UDP, TCP, TLS, SRTP • Voice Codec: G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM, Speex • Echo Cancellation: ITU-T G.168 LEC • DTMF Mode: RFC2833, SIP INFO, In-band • SIP Server for IP Phones Included • SIP Response Code Switch • Call Progress Tone Generation • 1 Stage/2 Stage Dial
System Features	• Mobile Ports Groups • VoIP Trunk Group • Incoming/Outgoing Routing rules • Black List • Hotline • AutoCLIP • Call Duration Limitation • Call Transfer • Call Back • Call Detail Record (CDR) • Call Status Display • NTP • IP Blacklist • Network Attack Alert • Packet Capture • System Logs
Mobile Features	• GSM Frequency: 850/900/1800/1900MHz • VoLTE if the Carrier Supports • SMS Sending and Receiving • Send Bulk SMS • SMS Center • Gain Adjustment • USSD • PIN Modify • Carrier Selection: Auto/Manual • Talk Time Alarm • Caller ID/CLIR • Open API for SMS and USSD
Network & Management	• Network Protocol: FTP, TFTP, HTTP, SSH • NAT Traversal: Static NAT, STUN • Static Route • OpenVPN • Firewall • VLAN • QoS/ToS • DDNS • Configure Backup/Restore • Firmware Upgrade by HTTP/TFTP • Web based Configuration
Physical	• Size: 213x160x44 mm • Power Supply: AC 100-240V • Operation Range: 0°C to 40°C • Storage Range: -20°C to 65°C • Humidity: 10-90% non-condensing