Technical Manual Issue 2.1 4000 Digital Series II
Page 36 STA0381
2.2.13 PD4222SR/PD4222S Supervisor Key Panel
2.2.13.1 PD4222SR Front View
Figure 28 - PD4222SR Front View
1 Microphone Socket 8 Main Volume Control
2 Microphone Mute Pushbutton 9 Reply Key
3 Shift Pushbutton 10 Direct Access Key (DAK)
4 Level Control 11 Soft Pushbutton
5 Loudspeaker 12 Headset Select Pushbutton
6 Auxiliary Volume Control 13 Headset Socket
7 Loudspeaker Cut Pushbutton