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SN4554 Getting Started Guide
2 • Applications overview
ISDN BRI PSTN Gateway application
The SmartNode 4554 ISDN VoIP gateway enables any IP PBX to make calls to the ISDN PSTN. The com-
pact, reliable stand-alone design allows enterprises to easily and flexibly integrate BRI lines into their VoIP sys-
tem. It converts up to four simultaneous phone or fax calls from SIP or H.323 to BRI ISDN.
Figure 4. ISDN BRI PSTN Gateway application
ISDN BRI PSTN Gateway application
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