Laboratory data communication - part 1 : point - to - point connection with rs - 232 ; physical arrangements 实验室数据通信.第1部分:用rs - 232进行点对点连接.结
Interfaces and basic data link control procedures for serial measurement data communication ; start - stop - transmission , point - to - point connection 串行测量数据通信用接口和基本数据链接控制程序.第1
Interface and basic data link control procedures for data communication ; balanced interface for start - stop transmission using basic data link control procedures on point - to - point connection 数据通信接口和基本数据链路控制程序.用点对点连接方
Frame relay is unlikely to be cost - effective when only two sites are interconnected with a point - to - point connection . frame relay is more cost - effective where multiple sites must be interconnected 讯框中继在只有两个端点的点对点连结是没有效率的,在多个端点间的连结才会有效率。