6Back PanelANT : When the radio is built-in, VHF/UHF antenna can be setupVoIP: Through telephone the VoIP calls can be madeRADIO : The custom-made external lead can be purchased additionally, and connect to your own radio systemLAN : Use Ethernet cable to connect to PC. You can set up the web page through LAN PortPower : Please use the Power Converter that comes along within the packageReset : When the power is on, press Reset button for around 6 seconds and stop when Alarm light is flickering, the factory defaults isnow restored