What is IRLP? Central ND IRLP Hotlink Using IRLP Rules of Operation Connecting Disconnecting Central ND Hotlink Features ND IRLP Station Nodes IRLP Reflectors Need Help? Would You Like To Know More? What is IRLP? The Internet Radio Linking Project, also called IRLP, is a closed-source project that links amateur radio stations around the world by using Voice over IP (VoIP). Each gateway consists of a dedicated computer running custom software that is connected to both a radio and the Internet.