The Ports tab displays a list of the current port service mappings, and lets you enable or disable UPnP port forwarding. To enable or disable UPnP port forwarding: Set UPnP port forwarding to ON to allow UPnP devices on your Fiber network to set their own port forwarding rules.
VRML (Virtual Reality Modeling Language) is a language for describing three-dimensional (3-D) image sequences and possible user interactions to go with them.
VRV is a commercially applied heating and cooling system that distributes refrigerant, rather than water, to multiple fan coil units serving the conditioned spaces. The natural. attributes of a VRV system position it as an alternative to a chiller system. The Features of VRV.