Alto Solo - Buttons, Indicators & Function Table – Avantree Support

❶Power Switch ❻Charging Port (Headset)

❷Volume Up ❼Charging Port (Stand)

❸Volume Down ❽Microphone Mute Switch

❹Busylight ❾Mute Light

❺Call Button ❿Status Light

Function	Operation
General
Power On	Slide the ❶power switch to the middle toward "ON"
Enter Pairing Mode	Slide the ❶power switch to the right toward "PAIR" and hold until the LED flashes BLUE and RED alternately
Power Off	Slide the ❶power switch to the left toward "OFF"
Voice Prompt On	Hold ❺ call button & ❷ volume up until you hear “Voice Prompt On”
Voice Prompt Off	Hold ❺ call button & ❸ volume down until you hear “Voice Prompt Off”
Call Control
Answer/End a call	Tap the ❺ call button once (only works with phone calls)
Reject a call	Hold the ❺ call button for 1 second during an incoming call (only works with phone calls)
Activate voice assistant	Hold the ❺ call button for 2 seconds
Toggle mute on microphone	During an active call, slide the ❽mute switch to the mute position. The LED will turn ORANGE
Volume up	Short Press the ❷volume up button
Volume down	Short Press the ❸volume down button
Music Related
Play/Pause music	Tap ❺call button once
Previous track	Press and hold the ❸volume down button
Next track	Press and hold the ❷volume up button

Status	LED indicator	LED
Pairing Mode	Alternates flashing RED & BLUE	Status Light
Reconnecting	Flashing BLUE	Status Light
Disconnected	Blinks BLUE once every 10 seconds	Status Light
Microphone Mute ON	Solid ORANGE	Mute Light
Connected	Blinks BLUE once every 5 seconds	Status Light
Low Battery	Blinks RED 3x every 10 seconds	Status Light