传真通信国家标准，相当于ITU - T T.30协议。文件传真三类机在电话网中的互通技术条件 第2部分：在公用电话交换网上的文件传真传输规程
fax communications standards, equivalent to the ITU-T 7-9-2 agreement. Three categories of documents by fax machine telephone network in the exchange of technical conditions Part 2 : the Public Switched online documents by fax transmission order (2006-05-30, PDF, 4794KB, 下载148次)
传真通信的国家标准。相当于ITU T.4， 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
fax communications of the national standard. Elections equivalent to the ITU, the paper fax machine three telephone network in the exchange of technical conditions Part 1 : for the three types of file transfer fax terminals Standardization (2006-05-30, PDF, 1995KB, 下载115次)