Do you have a question about the Jabra Pro 925 Dual Connectivity and is the answer not in the manual?
Connect the headset's AC adapter to the base and an electrical outlet.
Connect the Jabra Link 14201-10 EHS cable's red band to the AUX interface on the headset base.
Connect the Jabra Link 14201-10 EHS cable's single end to the headset interface on the desk phone.
Ensure the headset function is enabled on the desk phone. Consult phone or IT support if needed.
Set EHS to "DHSG" and dial tone switch to "A" if manual configuration is required.
Make a test call and adjust headset microphone volume for optimal audio levels.