Произведения
IEEE Std P269R/D9.2, Nov 2009
IEEE Std P269R/D9.2, Nov 2009 是电气电子工程师学会的草案,题为“IEEE Draft Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets”;公开目录标为非现行(Inactive),著录年份为 2009 年。