3 DescriptionThis section describes the DT390 cordless phone and its displayinformation, menu structure, and tones. A picture of the phone is shown inFigure 1.Figure 1 Overview of the DT390 Cordless Phone1. Soft keysUsed with Graphical User Interface.2. Off-hook keyTo connect calls, and as a short cut to the Call list.3. Voice mail accessTo listen to a voice mail.4. Key lock and upper and lower caseCombined key lock and Upper/Lower Case.5. SpaceTo add space between text.6. Mute keySwitch audible signals on and off, silencing the ring signal at incomingcall, and also to switch the microphone off and on during a call.1424_EN_LZT103087.doc Rev B2 2009-09-11 © Copyright Aastra Telecom Sweden, 2009.All rights reserved. 17