Would advise that if you are looking to get VoIP to make sure your broadband connection is actually fast enough. A typically entry level broadband 1mb serv ice should allow you too sign up for VoIP. Make sure the speed/quality of your broadband is good as latency of around 100 mili-seconds will create stutter and 150 ms or above will be pretty much unuable.
Your ISP may offer a VoIP service already so get that priced but also check out other VoIP provider's there's about 16 direct VoIP provider available in Ireland and if your ISP offer this service its probably 1 one of these direct sevice been resold anyways i.e. NTL and
IBB ISP's both resell Blueface VoIP packages.