D785 USB Headset: HD Voice support

Good afternoon,

I have a question regarding a SNOM D785 and the USB Headset support. Currently, a Jabra Engage 65 is connected to it via USB, which basically works quite fine. Just one thing is a bit strange: The wireless headset definitely supports HD voice (tested with another phone), but a call with G722 codec is as expected in HD quality on the wired handset of the phone, but limited to 4 kHz audio (standard phone quality) on the USB headset.

Is there a setting to enable HD audio support for USB headsets? Searching the SNOM Service Hub didn't reveal a hint.

Thank you.