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Yeastar TB BRI Gateway

  • 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


Physical Interfaces

  • BRI Ports: 2
  • 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


  • 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


  • DDNS
  • IP Blacklist
  • NAT Traversal
  • QoS/ToS
  • Static Route


  • Max 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


  • Connect legacy PBX to VoIP services
  • Connect IP-PBX to ISDN trunkings
  • ISDN connectivity for Contact Center
  • Connect legacy PBX to IP-PBX at the branch office
  • Interconnect multiple PABX to realize free inter-office calls


  • Dimensions: 213x160x44 mm
  • Power Supply: AC 100-240V (12V 2A)
  • Operation Range: 0°C to 40°C, 32°F to 104°F
  • Storage Range: -20°C to 65°C, -4°F to 149°F
  • Humidity: 10-90% non-condensing