ZyXEL Communications unified security gateway User Manual
Chapter 7 Tutorials
ZyWALL USG 20/20W User’s Guide
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address 1.1.1.2 that you will use on the wan1 interface and map to the IPPBX’s
private IP address of 192.168.3.7. The local SIP clients are on the LAN.
private IP address of 192.168.3.7. The local SIP clients are on the LAN.
Figure 96 IPPBX Example Network Topology