I六模全网通终端白皮书中国联通集团公司发布II1范围................................................................................12规范性引用文件......................................................................13缩略语、术语和定义..................................................................13.1缩略语..........................................................................13.2术语和定义......................................................................14要求等级............................................................................25要求编号说明........................................................................25.1要求编号组成....................................................................2SIXM:SIXM............................................................................25.2分类与子类编号的对应............................................................26双卡六模...............................