1. Auto Sync
The modems (3) and (4) are set to the same channel and will auto-sync after a few seconds.
After sync is complete, each modem are given dedicated timeslots where they are allowed to transmit and when they shall listen.
2. Transmit / Receive
When a modem receives a payload of data from its host (in this case, an AUV) it will start transmitting this payload in a package structure where each package is 64 bits.
The other modem which is in sync, will receive the transmitted data packages in dedicated time slots.
3 & 4. Modem M64
Each AUV carry a Modem M64 which is interfaced using a lightweight API.