The 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.

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
Compatible with various ISDN PBX, IP-PBX, and softswitch
Low power consumption for your green office