As the name implies, it is built on top of IP multicast, in which one transmitter can send one message and have it be received by more than one receiver.
顾名思义，这个协议是在ip多播之上构建的；在ip多播中，一个发送器可以发送一条消息并使多个接收器接收到该消息。
And as a failsafe, the receiver also sends a message to the transmitter via radio if it notices an unexplained interruption in power reception.
同时作为故障保护，如果接收器发现能量接收端有一个无故中断，还会通过无线电向传输器发送一个信息。
If a firm needs to get this message or content out to subscribers, it must contract with a channel delivery service or set up its own Transmitter software.
如果一个公司需要将其信息发送给订户，就需要订购通道交付服务，或者建立自己的。
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