Jabra Engage 55 - USB-A MS Mono
How do I manually turn on/off the busylight on my Jabra
Engage headset?
To manually turn the busylight on/off, simultaneously press the Volume
up button and the Volume down button.
https://www.jabra.com.au/supportpages/jabra-engage-55/9553-450-111/faq/bff8aec9-
9d1d-4e73-8b6f-c9544807433f
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