Yeastar TB400 is a compact and reliable standalone VoIP BRI gateway (BRI-VoIP/VoIP-BRI) offering 4 BRI ports for companies using ISDN BRI lines an easy, cost-effective and flexible integration into any VoIP system or enabling any IP PBX to be connected to the public ISDN network.

Benefits
• Software configurable TE/NT modes for easy integration
• ISDN PBX has access to VoIP network
• Preserve investment on PBX infrastructure
• Additional ISDN BRI trunking for IP-PBX
• Cost savings on phone calls via VoIP
• ISDN compliant and proven interoperability
• Interoperable with Elastix and Lync Server
• Compatible with various ISDN PBX, IP-PBX, and softswitch
• Low power consumption for your green office

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

Specifications
Physical Interface	• BRI Ports: 4 • 1 LAN Ethernet 10/100 BASE-T • Console Port
Voice Processing	• Protocol: SIP(RFC3261) • DTMF: RFC2833, SIP Info, In-band • Codec: G711a, G711u, G.722, G.723, G.726, G.729a, GSM, ADPCM, iLBC • Transport: UDP, TCP, TLS, SRTP • Echo Cancellation: ITU-T G.168 LEC
Telephony	• Blacklist • Call Detail Records • Call Duration Limitation • Caller ID • Caller ID Prefix • Call Routing Rules • Hotline • SIP Trunk Support • SIP Peer Mode • SIP Registrar for IP phones • T.30 Fax • T.38 Fax • Trunk Group • Two-stage Dialing
ISDN Specification	• Each interface can be configured NT or TE • Type of Connection: Point to Point Or Point to Multipoint • BRI Switch Types: National ISDN Type 1 and Type 2, Nortel DMS100, AT&T 4ESS, Lucent 5ESS, EuroISDN, Q.SIG
Internet	• DDNS • IP Blacklist • NAT Traversal • QoS/ToS • Static Route
System	• 8 Concurrent Calls • Backup and Restore • Custom Prompts • Firmware Upgrade by HTTP/TFTP • LED Indicators • Packet Capture Tool • System Logs • Security: Firewall, TLS, SRTP, HTTPS • Web-based Configuration
Applications	• Connect legacy PBX to VoIP services • Connect IP-PBX to ISDN BRI trunking • ISDN connectivity for Contact Center • Connect legacy PBX to IP-PBX at the branch office • Interconnect multiple PABX to realize free inter-office calls
Physical	• Dimensions: 213x160x44 mm • Power Supply: AC 100-240V (12V 2A) • Operation Range: 0°C to 40°C • Storage Range: -20°C to 65°C • Humidity: 10-90% non-condensing