本标准描述了PHS短消息网关（SMGW）和服务提供商（SP）之间、短消息网关（SMGW）和短消息网关（SMGW）之间的通信协议。本协议简称CNGP（China Netcom Short Message Gateway Protocol）-descr iption of the standard PHS Short Message Gateway (SMGW) and service providers (SP) between Short Message Gateway (SMGW) and the Short Message Gateway (SMGW) between communication protocols. The agreement called WWW (China Netcom Short Message Gateway Protocol)