I looked for this a while back but never found anything that actually worked. I wound up getting a new desk phone from Plantronics. The unit is designed for BT use and it works as a BT land line desk phone and the BT headset also works with my cell and PC. So I can roam around and get calls on both my cell and office lines. It also works with VOIP stuff on your PC but I don't use that at all. I do however use it with my PC to stream audio to the headset so I can listen to tunes or MLB game day audio on the BT headset.
I think the adapter market never got off the ground because they don't work for sh*t. Your be better served looking at new phone units that are built to do this type of stuff.
Posted from my CrackBerry at wapforums.crackberry.com
