ZyXEL Communications ZyWall ATP series - How to Configure the USG When Using a Cloud Based SIP System

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How to configure the USG when using a Cloud Based SIP
system
This example shows how to configure USG when there is a Cloud Based SIP system. The
IP phones are more and more popular nowadays. USG supports the scenario as IP
phones located in LAN and connect to internet to register the SIP server.
SIP Phone connects to SIP server via USG.
int
USG
WAN IP
SIP
IP
IP
IP
Note: All network IP addresses and subnet masks are used as examples in this article. Please
replace them with your actual network IP addresses and subnet masks. This example was
tested using USG210 (Firmware Version: ZLD 4.25).