wireless radio transmition - RS232 and TDA/TDMA

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Hi!

I am in the process of making one medium range transceiver.
In this project i want to implement TDA becouse i have cca 35 different users. This will be closed network similar to some mini mobile phone network but on different frequency. Keyboard, LCD ...

Questions:
From the CCS programming side, what would be better and easier solution:

1.) To use RS232/ and MAX7042 with MAX7044 + TDA

2.) To use some RF chip + TDA

Main things to watch:
- TDA/TDMA
- some proven test ?

Best regards !