The Siemens OpenStage 20 HFA (Hipath Feature Access) with 6 fixed function keys, LCD display, volume keys and can be used in Hipath 500, 3000, 4000 and as a TDM (Time Division Multiplexing) telephone.
Other features include Handsfree Duplex talking and open listening.
 
Features:
3-way navigation key
6 fixed function keys
Volume keys (Loudspeaker/+/-)
Keypad with 12 keys
Tilt-able LCD 2 line display
5 red LEDs for key signalling
Wall mountable