ZyXEL Communications P-792H User Manual page 243

You may edit or delete the port mappings or click Add to manually add port
4
mappings.
Internet Connection Properties: Advanced Settings
Internet Connection Properties: Advanced Settings: Add
When the UPnP-enabled device is disconnected from your computer, all port
5
mappings will be deleted automatically.
P-792H v2 User's Guide
Chapter 18 Universal Plug-and-Play (UPnP)
243