ISO/IEC 21481:2005 specifies the communication mode selection mechanism, designed not to disturb any ongoing communication at 13,56 MHz, for devices implementing ISO/IEC 18092 and the reader functionality for integrated circuit cards compliant with ISO/IEC 14443 or ISO/IEC 15693. ISO/IEC 21481:2005 requires implementations to enter the selected communication mode as specified in the respective International Standard. The communication mode specifications, however, are outside the scope of this NFCIP-2 International Standard.