说明：  ＳＭＰＰ协议 3.1ＳＭＰＰ规范简介 ＳＭＰＰ接口协议最初由ＥＴＳＩ收录在　ＧＳＭ０３.３９规范中，描述了短消息中心与短消息实体之间通信交互的协议关系及数据传输格式，
(About SMPP protocol SMPP interface specification 3.1SMPP agreement initially included in the ETSI specification GSM03.39 describes the SMS Short Message Center and the interactive communication between entities, the relationship between the agreement and data transmission formats,)