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SmartNode 4130 User Manual
How it works:
1. Connect the SmartNode to the PSTN and legacy PBX, and configure the call router to pass all calls from
the PBX to the PSTN and vice versa. This first step will not affect any uses in the enterprise
2. Choose your ITSPs, and configure as many on the SmartNode as you need. Use the intelligent call router
in the SmartNode to decide which call is forwarded to which ITSP, and which calls should go to the
PSTN. This may be based upon least-cost routing criteria, or for example, on calling party number. The
latter is ideal if you want to test calls to an ITSP before enabling it for all users within the enterprise. As far
as supported by the ITSP, the SIP signaling but also the Media can be sent and received encrypted using
SIP TLS and SRTP (optional license required at additional cost).
3. Voice over IP can be switched off instantly on one single box (the SmartNode) to revert the system back to
as it was before.
4. Build up an IP PBX system that uses the SmartNode as PSTN gateway. For all calls from this IP PBX, you
can direct them to the PSTN or to ITSPs. Numbering plan adaptations are handled through regular
expression matching by the SmartNode. No need to change anything on the PBXs.
5. Once the IP PBX is ready, you can choose on incoming calls from the PSTN, for each extension whether
this extension is to be directed to the IP PBX or on the legacy PBX.
Application—ISDN to Full IP Conversion
The SmartNode 4130 provides excellent VoIP and security features for seamless network integration. All BRI
ports are configurable to be TE or NT, you can thus connect your telco line(s) as well as a PBX or ISDN termi-
nals. Terminals are powered with the built-in power supply, eliminating the need for an external box
With up to 4 BRI ports and 8 simultaneous G.711 voice channels, the SN4130 is the best way to connect
ISDN networks or ISDN terminal equipment to the world of voice over IP. With built-in security features such
as HTTPS provisioning, Fraud protection and optional SIP-TLS it provides business-class Internet telephony
for demanding ISDN users.
Application—ISDN to Full IP Conversion
Figure 5. ISDN to Full IP Conversion
2 • Applications Overview
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