ETSI ETS 300 901-1997 数字蜂窝通信系统(第2+阶段).点对点(PP)短消息业务(SMS)的技术实现.GSM 03.40(第2版,版本5.5.1)
Digital Cellular Telecommunications System (Phase 2+); Technical Realization of the Short Message Service (SMS); Point-to-Point (PP) Second Edition; GSM 03.40 Version 5.5.1