Last: Network management software is developed reference on Q3protocol to implement all the functions of file transfer defined in TMN.
参照Q3接口协议编写出上层的网络管理软件系统，实现TMN定义的文件传送方面的功能。
2
The charging system is a very important part of TMN. FTAM protocol of Q3 interface is the most popular protocol used in the charging file output of all the exchanges.