Our device, Ublox LARA R2 (LTE Cat1 device), uses UDP to communicate with our back-end server. When we started this project a while back, we were working with a SIM provider which had a UDP port timeout set to 10 minutes. That meant that the back-end had up to 10 minutes to reach out the device with UDP traffic before the UDP port was closed. With Hologram, the UDP timeout is 30 seconds for Open state and 60 seconds for Ready state. Very short and almost unworkable for us.
I had looked at Spacebridge and we might be able to set up PPP on the device and give it a go. But, there would also be some changes on the server.
Is there an easier solution?? Our “other” SIM card provider offers a VPN solution. Because the UDP traffic is no longer routed out in the “open”, they claim that the UDP ports would remain open indefinitely should traffic flow through a VPN. The great appeal is the fact that there wouldn’t be any changes required on the device or the server (other than config updates) to make this work.
Does Hologram offer a VPN solution which would allow us to continue to use UDP AND have the ports remain open for extended periods of time without constant traffic moving through?
One last point: we are in the process of moving the server code to AWS.