How to do an EHS reset on EHS40: Sennheiser
- Unplug the power from the back of the headset base (yellow sticker) and USB (orange sticker, may not be plugged in)
- Unplug the cord in the green phone port in back of base
- Head to the back of the phone and unplug the USB (may be in back or the side of phone)
- Next, plug everything back in, but in reverse order: USB-->phone port-->power
That should do it!