1.3 SYSTEM BASICSInstallation Manual 23Inside View of the Main Cabinet—KX-TVS325NotePorts 1-24 are at TNV.System ComponentsPower IndicatorIndicates the system status: when flashing, the system is off-line (not ready to receive calls).RS-232C ConnectorConnects an ASCII or VT terminal to the VPS that is necessary to program the system.Ground TerminalMust be connected to a ground source with less than 1 resistance.FuseProtects the system from power line surges and should only be replaced with the same type.Please see the fuse socket on the cabinet for the value of the fuse.AC InletConnects the power cable to an AC outlet dedicated to the VPS.Power SwitchStarts the system and begins the self-test.SAFETY PRECAUTION: When making any connections or removing the cover, be surethe power switch is switched off.Internal Modem Card—KX-TVS325Modem card for remote administration.SLOT 6MODEM SLOT 5 SLOT 4 SLOT 3 SLOT 2 SLOT 1Power IndicatorDIP SwitchInternal ModemCardFerrite CoresSlots ForOptional PortCardsFactory-installedKX-TVS204 cardGrounding Strap 3.5" Hard DiskDriveCable Clip