I just received my Obi200 today. I went through the set up process for GV and have successfully placed an outboud call and received an inbound call using a cheap Emerson analog house phone plugged in to the phone port of the Obi200. But I'd like to use my nice Cisco CP-8865 instead. I have done a lot of digging and still can not figure out how to set this up. Could someone please assist me?