EC25 Communication between modules /UART via UDP/

IoT Modules LTE Standard Module
1

Hello.
I am looking for a solution to connect two modules via a UDP , need to make UART connections between two IoT devices.
I managed to implement this task by opening “UDP Service” in two modules. And subsequent data exchange via UDP with the indication of the remote IP address and port.Everything is as written in the manual.

The problem is that this mechanism does not work in absolutely all cellular networks.There are three states: somewhere it works perfectly, somewhere it works only in one direction, somewhere it doesn’t work at all.

Am I right in assuming that this method is highly dependent on how the network structures within the cellular network are organized?

My question is the following:

  1. Has anyone encountered a similar problem ?
  2. How, in principle, is it possible to organize a fast end-to-end data transmission channel between two modules via UDP ?
2

Hi @n33159
I think it mainly depends on whether you get a public IP address, if you get a LAN IP address will not be able to communicate directly.