Base setup:
Set the phone setup switch to position "A".
Microphone level setup:
Remove the cover from the base of the Jabra PRO 9450 and make a call
with the headset, to a colleague for example. If you are too loud or too
quiet to the person you are calling, please use the volume adjuster until
you achieve the optimum volume level.
Phone setup:
Open Phone 71 Menu > Settings > Audio > Headset ON
Open Phone 73 / 75 incl. IP: Menu > Complete menu > Phone settings >
Headset ON
02/07/2023 13:12
https://www.apac.jabra.com/supportpages/jabra-pro-9450/9450-25-507-
102/faq/a99e9db6-4174-4ede-9a6f-821bddd7dae7
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