The wireless calling service system is a kind of one point to multipoint communication, which has the problem of channel collision.
无线呼叫服务系统为点对多点通信，存在信道冲突问题。
Fielbus is whole scattered intelligent, bi-directional, interconnected, multivariable and multipoint communication network which connects intelligent working equipment with automatic system.
它是连接智能现场设备和自动化系统的全分散、数字式、双向、多变量、多点、多站的通信网络。
The system based on IP multicast to implement multipoint communication requires less bandwidth.
采用IP组播技术实现多方通信，大大减少了网络带宽的开销。
The system based on IP multicast to implement multipoint communication requires less bandwidth.
采用IP组播技术实现多方通信，大大减少了网络带宽的开销。
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