SONET系列产品主要面向北美、日本等应用SONET体制的国家和地区城域网光网络市场-SONET series products are mainly oriented application SONET system in North America, Japan and other countries and regions in the metro optical networking market

Network is a 1976 American satirical film released by Metro-Goldwyn-Mayer and United Artists about a fictional television network, UBS, and its struggle with

Ethernet as transport network. The topic is about developing Metro-Ethernet and MPLS Technology