GB_T 3382.1-2003 文件传真三类机在电话网中的互通技术条件　第1部分：用于文件传输的三类传真终端的标准化.pdf-GB_T 3382.1-2003 paper fax machine three types of telephone network in the exchange of technical conditions in Part 1: File Transfer for the standardization of the three types of fax ter