4000 Digital Series II Issue 2.1 Technical Manual
STA0381 Page 11
2.2.4 PD4212R/PD4212 LCD Key Panel and Rotary Encoder
2.2.4.1 PD4212R (revised) Front View
Figure 8 - PD4212R (revised) Front View
2.2.4.2 PD4212R Front View
1 Microphone Socket 7 Main Volume Control
2 Microphone Mute Pushbutton 8 Reply Key
3 Shift Pushbutton 9 Direct Access Key (DAK)
4 Crosspoint Level Control 10 Soft Pushbutton
5 Loudspeaker 11 Headset Select Pushbutton
6 Auxiliary Volume Control 12 Headset Socket
1 Microphone Socket 7 Main Volume Control
2 Microphone Mute Pushbutton 8 Reply Key
3 Shift Pushbutton 9 Direct Access Key (DAK)