Universal Plug and Play (UPnP) Internet Gateway Device (IGD)-Port Control Protocol (PCP) Interworking Function

Universal Plug and Play (UPnP) Internet Gateway Device (IGD)-Port Control Protocol (PCP) Interworking Function This document specifies the behavior of the UPnP IGD (Internet Gateway Device)/PCP Interworking Function. An UPnP IGD-PCP Interworking Function (IGD-PCP IWF) is required to be embedded in CP routers to allow for transparent NAT control in environments where UPnP is used in the LAN side and PCP in the external side of the CP router.