User ManualTable of ContentsContents3Important Safety Information7Sensitive Electronic Environment (EU/EFTA only)7Regulatory Compliance Statements (EU/EFTA only)8Always dispose of old equipment correctly - keep our environment tidy (EU/EFTA only)9Regulatory Compliance Statements (USA and Canada only)9Frequency Range11Power Supply11Safety Precautions11Usage12Environmental Requirements13Introduction15Functions and Accessories15Functions15Accessories15Descriptions17Avaya 3720 DECT Telephone18Chargers19Desktop Charger19Charging the telephone in Desktop charger19Rackmount Charger20Icons and Text in the Display21Keys and Buttons24Off-hook Key24On-hook, and On/Off Key24Navigation Key24Sound Off Key24Key Lock and Upper/Lower Case Key24Soft Keys25Alphanumeric Keys25Accessories26Belt Clips26Telephone lanyard26Leather Casing27Headset27Menu Tree28Calls28Contacts30Settings31In Call32Basic Operation34Switch the Telephone On/Off34Turn the Audible Signal On/Off34Lock/Unlock the Keypad34Lock/Unlock the Keypad in Idle mode34Lock/Unlock the Keypad during a call35Lock/Unlock the Telephone35Calling36Incoming Call36Answer a Call36Decline a Call36End a Call36Outgoing Call37Dial a Number (Pre-Dial)37Dial a Number directly (Post-Dial)37Dial a Number from the Call list37Dial a Number from the Local Phonebook37Dial a Name from the Central Phonebook38During A Call38Adjust the Volume during a Call38Open Contacts during the Call38Turn the Microphone on/off during a Call39Start a New Call during Conversation39Switch between Calls39End a Call40Transfer a Call40Transfer to new Call40Starting a Conference Call40Call Back41Call Waiting41DTMF41Loudspeaking Function41Call Diversion42General Purpose42Voice Mail42Check the Voice Mail inbox42Menu Operation43Calls43Call List43Missed calls45Call Time45Call Services45Contacts46Call Contact46Add Contact46Edit Contact47Delete Contact47Central Phonebook48Settings48Sound and Alert48Headset49Display50Time & Date50Phone Lock settings51Answering52Change the Menu Language53Change Owner ID53In Charger Actions when in Call53In Charger Actions when not in Call54System55Device info56Advanced Functions57Admin menu57System Handling58Software Upgrade58Troubleshooting59Operation Notice61Accessibility and Voice Quality61Maintenance62Charge the Battery62Replace the Battery62Attach the Hinge-type Clip63Quick Reference Guide65Index72Size: 2.3 MBPages: 73Language: EnglishOpen manual