We are aware of the need for accessible, global communication, especially given the global diversity of CERN contributors. The use of Skype is tolerated at CERN provided it is configured in accordance with the procedures documented by IT at https://espace.cern.ch/it-faqs/Lists/faqs/DispForm.aspx?ID=72. These procedures allow configuration of Skype in a way that minimizes the network bandwidth used. As with all use of CERN computing facilities, the CERN Computing Rules, as set out in Operational Circular No. 5, are applicable. Unless your productivity is compromised in the view of your hierarchy, your use of Skype for personal calls should not pose a problem.