目前短信业务主要有两种形式,一种是点对点短信,就是普通用户之间互发的短信;另一种是增值短信,也就是普通用户与SP之间的短信。短信增值业务是近两年才开始发展的,SP代码也是由运营商自行分配的。这样就造成一个SP对应多个代码,用户记忆和使用很不方便,同时也增加了SP的宣传和 At present, there are mainly two forms of short message service, one is point-to-point short message, which is the short message between ordinary users; the other is value-added short message, that is, an ordinary user and the SMS between SPs. SMS value-added services in the last two years began to develop, SP code is also assigned by the operator. This resulted in a SP corresponding to multiple code, the user memory and use is very convenient, but also increased the SP’s publicity and