ZyXEL Communications ISG50-ISDN Application Note page 77

Click on the Connect button to establish the VPN link. Once the tunnel is established, a connected icon will be displayed in front of the rule.
When the VPN tunnel is established, the user can find the SA information on MONITOR > VPN MONITOR > IPsec.
ISG50 (Main Office):
USG (Home Office):
Clients in the subnet 192.168.2.0/24 of USG can register to ISG50 with the SIP server address 10.5.5.1.
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