About the Nortel IP Phone 1140E20Note: Some IP Phone 1140E phones are not configured to supportsoft key functionality. Consult your system administrator.• graphical, high-resolution LCD display, backlit, with adjustablecontrast• high-quality speaker phone• volume control keys for adjusting ringer, speaker, handset, andheadset volume• six specialized feature keys:— Quit— Directory— Message/Inbox— Shift/Outbox— Services— Copy• six call-processing fixed keys:— Mute— Handsfree— Goodbye— Expand— Headset— Hold• gigabit Ethernet ports• built-in gigabit Ethernet switch for shared PC access• headset jack with an On/Off key• USB port to support a keyboard, mouse, wireless headset, or anaudio device. The USB audio devices include the Nortel EnhancedUSB Headset Adapter, the Nortel Mobile USB Headset Adapter, theAlgo 4900 USB Analog Terminal Adapter (ATA), and wirelessheadsets from GN Netcom and Plantronics. Powered downstream1.1-compliant USB hubs are supported, including USB 2.0 hubs, ifthey offer USB 1.1 backwards compliancy.• automatic network configuration