RTX 8430 - Rear View - Handset

SME VoIP Handset guide
Proprietary and Confidential Page | 10
3.2 Rear View – Handset
10. Headset connector (3.5mm)
This is for connecting a headset. The connector is
protected against dust by the headset connector cover.
11. External Speaker
Is used for ringing, alarms, and when speaker mode is
enabled in call.
12. Battery