Hi we are using 50 of Netvox devices(end devices) for leak sensors and one gateway for 50 sensors
Nexvox devices sents update for every one hour to the gateway
But sometimes gateway missing to catch up the updates from the Netvox devices.
Do you have any idea that how to catch up all the data from end devices with out missing data packet from end devices for every one hour

Check the baud rate or time interval.

Try different speeds and check the status.