When you are moving into a new house – or getting one built – one important thing to remember is to sort out the telephone connection.

Eircom is the  company in charge of the telephone system in Ireland . You can choose another provider eventually – but you have to go through Eircom first  for a brand new landline connection.
A Landline connection is  almost essential in many places in Ireland  if you want a good broadband connection speed.
Most landline providers offer bundles where you can get all your calls to landlines and broadband for a set monthly price.

See this article  Comparison of  Broadband and Phone Prices in Ireland – it compares the prices from providers like Vodafone, Eircom,  UTV and UPC .