I want to buy, rent, etc. an IP phone (preferably cordless) that attaches directly to the ethernet port of my router. I do not want to go through my PC...I want for this phone to be on all the time.

In order to get a 'dial tone' I would be willing to 1) subscribe to a service or 2) have a PC on a my house that is always on that attaches to a 'real' dial tone.

Any suggestions?