Ok, I'll start with the longer version of the story.  After using a Sennheiser wired headset for years, I decide to upgrade to a wireless version. I chose the Sennheiser DW10 model, with the Sennheiser lifter.You can find the discussion on that here:...

Hi, I have a 7942G Cisco phone at work, it is the standard model that we all have.I have recently purchased a DW Office Sennheiser wireless headset plus the HSL10 lifter to use with the phone.Unfortunately there is a problem with it, in the sense tha...