Optical transport network ; transmission model ; optical cross - connector ; optical add drop multiplexer 光传送网传输模型光交叉互连光分插复用
The dotted line in figure 1 represents the " multi - port broadband manager " , which serves to integrate the tm , atm equipment and 44 , 441 cross - connectors in sdh into one module 图1中虚线部分为"多光口宽带管理器" ,它将sdh的tm 、 atm设备及44交叉机、 441交叉机集成为一个模块。
The concept of the graph form of a blocking optical cross - connector is introduced so as to investigate the blocking situation . the principle is that the blocking node can be replaced by a graph which is composed of nonblocking nodes and capacity limited edges . three graphs of typical optical cross - connector nodes are demonstrated . several uniform result are derived from these examples 该方法的基本思想是用图来替代交换能力受限制的节点,而此图由交换能力不受限制的节点和容量受限的边组成。文中以典型的阻塞oxc节点为例,给出了它们的图表示,并通过例子得出一般的oxc节点图表示求法的一些普遍结论。