www.webcalldirect.com Use your normal phone. No special eqpt needed. No downloading required. Their is a connection charge of 3 euro cents for each call,and the min top up is £5 which lasts 90 days.However you dont lose credit.When you top again its carried forward.
" Members get a maximum of 300 minutes per week of free calls, measured over the last 7 days. Unused free minutes cannot be taken to the following week(s). If limit is exceeded, a minimal rate of 1ct/min will be charged. "