This attribute is valid on allchannel types that can ever receive a channel initiation flow, except for sender channels. This attribute is valid for channel types of.
这个属性对可以接收一个通道初始化流的所有通道有效，发送器通道除外。
3
This article discusses the selection of compatible closed circuit television channels in allchannel CATV system and explains how to use pocket computer to aid the design.