The Presence LED Lights on your headset let others know when you're busy. The Presence LED Lights automatically show solid red when you're on a call. When you aren't on a call, you can manually turn on the LEDs with Mute the mute button .

Cisco Headset 730 Busy Light
Table 1. Presence LED Light Status

Light Status

Headset State

Solid red LED

Active call/Busy

LED blinks

Incoming call