Electric and Network Installation

• Can I replace a pre-existing BTicino 2 wires internal unit?
• Can I connect my Classe 100X to a wifi repeater?
• Can I share the adsl connection among two or more Classe 100X?
• Is Classe 100X with Netatmo compatible with other BTicino old wiring technologies?
• Do I have to NAT my router ports to receive the call on my smartphone?