Installation and Setup ..........................................................................158Connections ..................................................................................................................158Bluetooth Headset Connections ..................................................................................161Installation ....................................................................................................................161Bluetooth Headset Operation .......................................................................................163Setting Up the KX-NT400 ..............................................................................................165Accessing the Start-up Settings ...................................................................................165Language Settings .......................................................................................................167IP Address Settings ......................................................................................................167IP Port Settings ............................................................................................................168Quality of Service (QoS) Settings .................................................................................169Maintenance .................................................................................................................170Firmware Version Update .............................................................................................171Setting Initialise ............................................................................................................173Firmware Version .........................................................................................................173Error Log ......................................................................................................................174Maintaining the KX-NT400 ............................................................................................174Data Maintenance ........................................................................................................174Initialising the KX-NT400 ..............................................................................................176Restarting the KX-NT400 .............................................................................................176Cleaning the KX-NT400 ...............................................................................................177Appendix ...............................................................................................178Specifications ................................................................................................................178Programming Items ......................................................................................................179User Options ................................................................................................................179Administrator Options ...................................................................................................185Firmware Version Update ..........................................................................................189SD Memory Cards .........................................................................................................190Important Information ...................................................................................................190Compatible SD Memory Cards .....................................................................................190Inserting and Removing SD Memory Cards .................................................................190Write Protection (LOCK) ...............................................................................................190Formatting SD Memory Cards ......................................................................................191Troubleshooting ............................................................................................................192Common Issues and Solutions .....................................................................................192Error Messages ............................................................................................................201Error Codes ..................................................................................................................203Index............................................................................................................206Operating Instructions 17Table of Contents