10 OverviewFigure 1IP Phone 2004Hardware featuresThe IP Phone 2004 supports the following features:• 11 programmable feature keys that can be extended to 14— six physical user-defined feature keys and six lines/featuresaccessed using the up and down navigation keys to scroll throughpages of features— the primary directory number (DN) key (green) always has the PDNdisplayed against this key• four softkeys; one softkey is for navigation and selection of menuoptions, three remaining softkeys can be configured to support features• multifield liquid crystal display (LCD) display screen; four-line displayarea• speaker for on-hook dialing or on-hook listening• volume control bar for adjusting ringer, speaker, handset and headsetvolume• six specialized fixed keys:Carrier VoIPNortel IP Phone 2004 User Guide (CICM)NN10300-009 09.01 Standard4 July 2008Copyright © 2008 Nortel Networks.