I´ve been reading through several forums , I´m not sure myself ...
in the phone menu it says :
Wireless&network settings > On Screen Phone settings
says available over USB or Bluetooth
but when you run OSP v2,0 on the PC
it says On Screen Phone works over WiFi only when OSP ver2,0 is already installed on the PHONE
I chequed my phone and version is 1.0 com.lg.osp ver 1,0