TB Series โ ISDN BRI VoIP Gateway
Flexible, cost-effective ISDN BRI gateways that connect the public ISDN network to any VoIP system.
Why this series
Built for reliable legacy-to-VoIP integration
Specifications
Models & specifications
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| 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 ร W ร H) (mm) | 213 ร 160 ร 44 | |





