摘要
一种采用MT9172为ISDN接口芯片的数字工业对讲系统用户线路中继器的设计方案,可根据需求变化成1～4路中继接口,应用方式灵活。通过二次中继,用户话站与系统主机之间的最大通信距离可达12千米,满足远程用户话站接入的需求。
A subscriber line repeater design of digital industry communication system,whose ISDN interface chip is MT9172.It may change 1~4 group relaying interfaces according to the demand.Through two relaying,the largest communications range between the user station and the system host is up to 12 kilometers,which meet the demand of remote station access points.
出处
《电子技术（上海）》
2008年第10期26-28,共3页
Electronic Technology
关键词
通信技术
MT9172
数字工业对讲系统
中继器
communication
MT9172
digital industry communication system
subscriber line repeater
