Chapter 8

Asynchronous Communication

Publisher Summary

Generally, a half-duplex system means one cannot talk while somebody else is talking. One has to listen patiently, wait for the turn, and then speak up, trying to be as concise as possible to give others the possibility of joining the conversation too. This chapter reveals exactly how it works in aviation. There is a precise protocol. However, it is a set of rules that dictate who should talk at any given point in time, what they should say, and how. There are specific roles, such as the air traffic controllers, the pilots, the flight stations, and the towers. They all share the media in a coordinated and efficient way. This works well as an introduction to the many asynchronous serial protocols. ...

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