This paper researches the key technologies in the UNI, for example the services offered over the UNI, Signalingtransport and service invocation reference configuration, addressing, etc.
本文研究了UNI提供的服务，UN I信令的传输和调用方式以及uni地址空间等关键技术。
2
Following is an overview of how the analog PSTN implements signaling and media transport operations.
以下是如何实现的模拟PSTN信令和媒体传输操作的概述。
3
Technique of railway signaling directly relates to railway transport safety.