Operations Manual

SME VoIP Handset Guide 4.8
Proprietary and Confidential
Page | 10
3.2 Rear View - Handset
12. Headset connector (3.5mm)
This is for connecting a headset. The connector is
protected against dust by the headset connector cover.
13. Volume Up Key (Side Key)
To increase the volume during call.
14. Volume Down Key (Side Key)
To decrease the volume during call.
15. Mute Key (Side Key)
To turn off the microphone in call, so that the
counterpart is muted.
16. External Speaker
Is used when speaker mode is enabled in call.
17. Battery