Redial and (Auto)Redial......................................................20Prime Line Preference.........................................................21CO Line Privacy...................................................................21Intercom Operation..............................................................21Paging Operation.................................................................22Interchanging the Intercom and Page.................................22Paging All Stations...............................................................23Mute Operation....................................................................23Pause Operation..................................................................23Flash Key Operation............................................................23Temporary Tone Dialing.......................................................23Conference Operation.........................................................24Do Not Disturb Operation....................................................24The Volume Key Operation.................................................24Battery Low Warning...........................................................24POWER FAILURE OPERATION........................................25Line Status Indication..........................................................25Disabling Unused Lines.......................................................25Non-Square Operation........................................................25ADVANCED FEATURE OPERATION................................26Viewing the Directory...........................................................26Programming the Directory..................................................26NSQ412 Four-Line Caller ID Telephone Owner’s ManualFCC INFORMATION ............................................................1IMPORTANT SAFETY INSTRUCTIONS.............................2INTRODUCTION...................................................................4The NSQ412 System Features.............................................4The Box Contents .................................................................5Key and Indicator Descriptions..............................................6GETTINGSTARTED...........................................................10Installation Preparation........................................................10Installing the Telephone on a Desk or Table........................12Installing the Telephone on a Wall.......................................13Basic Features.....................................................................16LED Illumination...................................................................16Ringer Status.......................................................................17Intercom Tone Status...........................................................17Station Initialization..............................................................17Answering a Call.................................................................18Making a Call.......................................................................18Switching Between Handset, Handsfree and Headset......19Call Timer Operation............................................................19Hold Operation.....................................................................20Transferring a Call to Another Station.................................20Release Operation...............................................................20