Thank you @Boots33 for the links seems that "isTransportReady()" will do my job... i have a lot of work... 
Best posts made by zzz-teo
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RE: "connected()" functionposted in General Discussion
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RE: ... using two Gatewaysposted in General Discussion
... may be using a MEGA to connect to serial1,2,3 ports
an NRF Gateway
an RS485 Gateway
and build a new serial output to Controller that will merge and manage messages via serial API.