Implementation of Digital Network Interface D(NID)evice Converting 2B + D to USB in ISDN ISDN中2B+D转USB网络接口设备的实现
As a general form of ISDN user network interface, the 2B + D interface has been widely used. An introduction is given in this paper to the design, implementation and debugging techniques of 2B + D interface for both hardware and software. 2B+D接口作为ISDN用户网络接口的普遍形式已得到广泛应用,介绍了2B+D接口的软硬件设计、实现及调试技术。
It acts as a terminal of this system, or an interface linking the analog communication equipment and the Ethernet, to function of network interface, discrete signal process, voice A / D, D / A and mix. 该接入设备既可作为系统的用户终端,也可作为转接设备,它配置于外部模拟通信设备与以太网的接口处,完成网络接口、离散控制信号转换、语音数字化以及多路语音合成的功能。