ISO/IEC TR 16166:2010 discusses the security of session-based communications within Next Generation Corporate Networks. It uses terminology and concepts developed in ISO/IEC TR 12860. It identifies a number of requirements impacting Next Generation Network standardization and makes a number of recommendations concerning deployment of enterprise networks. In addition, a number of standardization gaps are identified. Both signalling security and media security are considered. The scope of ISO/IEC TR 16166:2010 is limited to communications with a real-time element, including but not limited to voice, video, real-time text, instant messaging and combinations of these (multi-media).