Right now my home telephone is connected to the phone jack on the wall, which the phone jack connected to my front door intercom(talking to the guest who pushes the ring bell). I also want to use this home telephone to connected with OBi202 device. So I can use it to make Google Voice calls as well.
How to realize both functions in my home telephone? Does it have anything to do with the 2 phone ports on the OBi device?
Thanks.