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文章介绍了ＡＴＭ网络信令系统中的元信令，分析了元信令在ＡＴＭ中的作用及元信令规程与ＮＩＳＤＮ信令规程的对应关系，并将元信令的功能作了总结。
This paper introduces the meta signaling in ATM network signaling system, analyzes the function of meta signaling in ATM and the correspondence between meta signaling protocol and NISDN signaling protocol, and summarizes the function of meta signaling .