One idea per message
Short messages are easier to receive, repeat and verify. Mixing several topics into one transmission increases the chance that an important detail will be lost.
Confirmation without excess words
After sending information, it matters to confirm that it was received correctly. This is not bureaucracy; it is a way to reduce misunderstanding and repeated clarification.
Reliable communications begin with predictability and only then with hardware.
A backup plan
A specialist always keeps an alternative route in mind: another channel, a clear fallback sequence and an understanding of what to do when something fails.