ATMUNI信令的功能划分

The Divide of ATM UNI Signalling

ＡＴＭ用户－网络接口（ＵＮＩ）信令采用ＯＳＩ的分层结构，本文首先简要介绍了ＡＴＭＵＮＩ信令协议的体系结构以及各层的功能。然后详细描述了ＵＮＩ信令功能模块的划分，以及各模块的功能。

ATM user network interface (UNI) signalling has a OSI layered structure. The paper begins with briefing the architecture of ATM UNI signalling protocols, and the functions of each layer. Then , it describes the divide of the ATM UNI signalling's functional blocks, and the functions of each block.