Plantronics CS540A - Base and headset basics; Base overview; Headset overview

5
Base and headset basics
1 Call/mute LED
2 Power on/subscription LED
3 Charging LED
4 Subscription button
5 Narrowband/wideband audio switch
6 Power jack
7 Handset lifter/EHS cable jack
8 Telephone interface cable jack
9 Auto answer switch
10 Listening volume dial*
11 Speaking volume dial*
12 Configuration switch*
*For installation set-up
12
11
6
5
8 9
10
4
BACK
FRONT
Headset overview
2
1
7
6
3
4 5
1 Ear loop
2 Ear tip
3 Volume/mute button
4 Call control button
5 Battery cover
6 Headset LED
7 Microphone
1
2
3
7
BOTTOM
Base overview