User GuideTable of ContentsIntroduction3New Call/Message Waiting Indicator21Packing List3Voice Mail21Terms3420 Key Features4On/Off21420 Display6Line Status Indicators22Installing the Battery6Volume Control22Off-Hook Volume22Ringer Volume22Desk/Wall Mounting Bracket7Making Telephone Calls23Connecting the Telephone7Prime Line23Back Panel Connections7Receiving Telephone Calls23Side Panel Connections7Receiving Call Waiting Calls23Two RJ14 2- Line Telephone Jacks8Transferring Calls24One RJ61 4-Line Telephone Jack8To Transfer a Call24Answer a Transferred Call24Hold24To Enter the Program Mode10To Place a Call on Hold24To Exit the Program Mode10To Release a Call on Hold24Setting the Language10Mute25Setting the Time and Date10To Mute a Call25Setting the Extension ID11To Release Mute25Flash/Feature25Redial/Last Number Redial25Auto Redial25Turning the Ringers On or Off123-Way Call Conferencing26Change the Ringer Types12Tone/Pulse Mixed Dialing26Setting the Delay Ring13DND - Do Not Disturb26Programming the Line Usage14To Activate DND26Setting the Prime Line15To Deactivate DND26Call Privacy - Extension Conferencing27Setting Auto-Mute17To Deactivate Call Privacy27Auto Intercom Answer17To Restore Call Privacy27Setting Tone/Pulse Dialing18Paging and Intercom27Changing the Flash Duration18Paging All Extensions27Changing Hold Reminder19Answering a System Wide Page27Programming Area Codes19Paging a Single Extension28Resetting the 42020Answering a Single Extension Page28Room Monitor28Programming the Feature Keys35Making an Intercom Call29Dialing Using the Feature Keys35Answering an Intercom Call29Number Redial) to a Feature Key36Making an Intercom Conference Call29Using a Headset36Power Failure Operation36Battery Low Indication36Caller ID30The Caller ID Display30Troubleshooting37Viewing Caller ID Information30Programming Tree39FCC Requirements45Incoming Call30Simultaneous Incoming Calls30Call Waiting Caller ID30Stored Caller ID Records31Viewing Stored Caller ID Records31and Number may be Displayed31Dialing Using Caller ID Records31Deleting Caller ID Records32Deleting All Caller ID Records32Directory32Creating a New Directory Entry32Directory33Locating a Directory Record33Directory Records33(by Jumping)33Dialing a Directory Number33Deleting Directory Records34Deleting All Directory Records34Number Redial) to the Directory34Size: 370 KBPages: 25Language: EnglishOpen manual
