TB Series BRI VoIP

An easy, cost-effective and flexible integration into any VoIP system to be connected to the public ISDN network

ISDN PBX has access to VoIP network

Preserve investment on PBX infrastructure

Additional ISDN BRI trunking for IP-PBX


Rich functionalities

A robust feature set that fulfills your various needs


Easy management

Easy-to-navigate GUI.Programmable TE/NT modes for easy integration



Huge cost savings on phone calls via VoIP


Excellent interoperability

ISDN compliant and proven interoperability

Models TB200 TB400
BRI Ports 2 4
Protocol SIP (RFC3261)
Transport Protocol UDP, TCP, TLS, SRTP
Codec G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM
DTMF Mode RFC2833, SIP Info, In-band
Network DHCP, DDNS, Firewall, Static Route
LAN 1 10/100Mbps
Power Supply AC 100-240V (12V 2A)
Dimensions (L × W × H) (mm) 213 x 160 x 44

Key Features

  • Programmable NT/TE modes
  • Flexible number manipulation
  • SIP Registrar for IP phones
  • Trace and debug tools for diagnostics
  • Type of connection: Point to Point, Point to Multipoint
  • Least cost routing
  • Simple Web-based management


Connect ISDN PBX with VoIP Networks

SIP trunking provides a flexible and cost-effective communication option for any business wishes to decrease communication cost and increase efficiency, even companies that are running legacy ISDN PBX. For businesses that are tied to legacy equipment, TB immediately connects them to cost-saving SIP trunkings.



BRI Lines for IP-PBX

TB BRI VoIP Gateways provides an easy and trustworthy conjunction of IP-based system and BRI line. It is suitable when the local IP telephony network is constructed gradually in an institution that already has a legacy BRI network. Any SIP-based VoIP infrastructure, including IP-PBX, hosted IP-PBX, VoIP call center could benefit from this conjunction.



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