I recently changed my broadband and phone to Vodafone. I live in the Dublin area. The system they use is some sort of VOIP system where the phone line runs through the broadband modem. Previously my phone was running from the socket in the wall. Is there any major advantage/disadvantage to this VOIP type system. I have two extensions in the house from the main phone and with this system these extensions will not work. I would appreciate any advice as I am thinking of getting them to change back to the socket on the wall.