No. You must plug your Vodafone Fibre Broadband modem directly into the new master socket set up during the installation of your Fibre Broadband service.
During the installation process an engineer will visit your premises and install a new face plate on your master telephone socket. Only this socket will work correctly with your Fibre Broadband modem.
If you have ordered an optional extension socket (which is set up during the engineer's visit) then you can plug the modem into the new extension socket.