The Logitech H800 here seemed to be the right choice, which has also been confirmed in every respect.
The connection to the IP phone I realized via Bluetooth.
Pairing flap immediately, the connection is very clear and clean.
On the PC I have the included Logitech USB dongle connected.
Even this was immediately recognized by Windows 7 and the appropriate drivers are installed automatically.
In Skype and MS Communicator I only need to include the headset in the audio settings and that was about it.
You can switch between phone and PC takes place within seconds, it has to be switched on only between Bluetooth headset (for IP phone) and Logitech dongle (for PC).
The headset will automatically be detected either from the phone or PC.
Call quality is very good, this was confirmed to me by the interlocutors.
The comfort is also good, but I would rather have smaller earpieces and a thinner headband preferred.
The battery life is excellent, the headset is about 10h. running on the day and it is approximately 2 hours. telephoned the day.
I invite it as a precaution on every 2nd night.
Since I have my cell phone also coupled to the IP phone (including Bluetooth), I can now make calls from a home office with the headset GSM, IP & PC, and it wirelessly from your desk, the couch or even from the comfort of the room next door.
