Call failure analysis on digital trunk of PBX;
程控交换机数字中继呼叫失败原因分析
In this paper,the author introduces some key points of debugging Harris H20-20 digital trunk board Q.
文章介绍哈里斯H20-20数字中继板Q。
Transparent bridge, trunk, router on stick, and VLAN are the major methods of interconnecting 2-layer switch and 3-layer switches, but this interconnecting depends on whether they conform identical standard or not.
一般的 2层交换机与 3层交换机之间的互联可通过桥接、中继、单臂路由及VLAN等方式 ,这基于一个前提就是它们都支持同一的标准 。
Study on relay link of repeater station;
差转台中继链路方法的研究
Improved algorithm of cooperative relay nodes selection;
一种改进的协同中继节点选择算法