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近日，信息产业部以《信部科[2002]215号》文形式发布了一项通信行业标准——《网间主叫号码的传送（补充件一）》。《网间主叫号码的传送（补充件一）》标准的编号为YD/T 1157.1－2002。该标准是对YD/T 1157-2001《网间主叫号码的传送》的补充，规定了国际主叫号码传送的要求
Recently, the Ministry of Information Industry (MIIT) released a standard for the communications industry, “Transmission of Intranet Caller ID (Supplement 1)” in the form of “Letter Branch [2002] No. 215” The transmission of the calling number between networks (Supplement 1) is numbered YD / T 1157.1-2002. This standard complements YD / T 1157-2001 “Transfer of Caller ID Between Networks” and stipulates the requirements of international calling number transmission