Each data packet is transmitted on a different frequency channel, following a pseudo-random hopping sequence determined by the device address of the master device.
在一个由主设备的设备地址决定的伪随机跳频序列的指引下，每一个数据包都经由不同的频率信道来传输。
2
The current channel is set by the calling program or transaction by issuing a LINK, XCTL, START and pseudo-conversational RETURN with the channel parameter.
And for those that want to use a pseudo-synchronous style over an asynchronous channel, please, please, please, see Bobby Woolf's book on Designing Messaging Systems.