Sitecom WLR-8200 User Manual page 39

UPnP
With UPnP, all PCs in you Intranet will discover this router automatically, so you don't have to
configure your PC and it can easily access the Internet through this router.
UPnP Feature: You can enable or Disable the UPnP feature here. After you enable the UPnP
feature, all client systems that support UPnP, like Windows XP, can discover this router
automatically and access the Internet through this router without having to configure anything.
The NAT Traversal function provided by UPnP can let applications that support UPnP connect to
the internet without having to configure the virtual server sections.
Click Apply at the bottom of the screen to save the above configuration.