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| The SmartNode 4554 ISDN VoIP gateway enables any IP PBX to make calls to the ISDN PSTN. The compact, reliable stand-alone design allows enterprises to easily integrate BRI lines into their VoIP system. |
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- Compact, reliable stand-alone gateway for VoIP systems—Connects an IP PBX or other VoIP systems to the ISDN PSTN, offering 2 BRI TE ports and 4 simultaneous voice or fax calls.
- Full SIP and T.38 support—Supports the complete range of industry standard VoIP: SIP, T.38 fax, fax and modem bypass, DTMF relay. Codecs G.729, G.723 etc.
- Transparent Telephony Features—Preserves ISDN features like caller ID and name (CLIP/CLIR), call transfer, hold, waiting, AOC. Supports DID and MSN lines in all major countries as well as complex numbering plan manipulations.
- Outstanding Interoperability—Interoperable for voice and T.38 fax with 3CX, Asterisk™, PingTel™ and other leading IP PBX systems.
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