signaling techniques
Signaling systems link the variety of switching systems, transmission systems and subscriber equipments in a telecom network to enable the network to function as a whole. Signaling techniques fall under two major classes: inchannel signaling and common channel signaling(CCS). Different types of signaling techniques exist in each of the two classes。
Inchannel signaling, also known as trunk signaling, uses the same channel which carries user voice or data to pass control signals related to that call or connection. In contrast, CCS does not use the speech or the data path for signaling. It uses a separate common channel for passing control signals for a group oftrunks or information paths. Inchannel signaling has the merit that no additional transmission facilities are required for signaling whereas this is not the case with CCS.
麻烦不要GOOGLE翻译 。那个太烂了。
有知道这方面专业知识的英语帝么？ 跪求啊
