长短信实现原理：SP、自有应用将内容超过140个字节的短信拆分为多条内容不超过140个字节的短信，并正确配置Pk_total、Pk_number字段（具体字段说明参见附件CMPP协议第16页）。梦网网关、行业网关将长短信的各部分提交给同一短信中心下发并在用户终端进行组合，长短信全部接收后在手机终端显示为一条短信-The principle of a long message: SP, the contents of its own applications will be more than 140 bytes of text divided into a number of content is not more than 140 bytes of SMS, and correctly configured Pk_total, Pk_number field (see annex specific field descr iption CMPP Agreement p. 16). Monternet Gateway, the industry long SMS Gateway will be submitted to the various parts of the same text message center issued and carried out in combination of user terminals, long after receiving text messages all the cell phone terminal shown as a text message