Optus is offering post-paid mobile and fixed customers free standard voice calls to France from 12:01am AEST 15 July until midnight 21 July.
And, pre-paid mobile customers receive zero-rated standard voice calls made to France from 07:00 am AEST Saturday 16 July until midnight 21 July.
http://www.itwire.com/it-industry-news/telecoms-and-nbn/73851-optus-offers-free-calls-to-france.html