Yeastar TB Series BRI VoIP Gateways (TB200/400) provide 2 or 4 BRI ports for seamless integration between ISDN BRI lines and VoIP systems. They allow ISDN PBXs to access VoIP networks, add BRI trunking for IP-PBX, and connect IP PBXs to the public ISDN network. Supporting up to 8 concurrent calls, they offer flexible TE/NT modes, SIP protocols, advanced call routing, blacklist, caller ID, and fax via T.30/T.38. With proven ISDN interoperability, low power consumption, and strong security features like firewall, TLS, and SRTP, the TB Series ensures cost savings, reliable connectivity, and easy web-based management.

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