Hello,
Our solution uses nrf9160 in smart parking devices that the user controls from a smartphone app, through the internet. Since commands come from the user to the device, we need fast response and very high availability.
We are closely monitoring the connection to be active. I.e. a confirmed ticket opened couple of months ago to confirm with you we are doing the best we can Modem connection state detection
We still see some disconnects of >2 hours even though the device retries (from soft retry to reboot) every ~5 minutes.
We asked 1NCE to investigate on their side, and the conclusions were below (plus pic attached)
- The device intermittently worked on both Vodafone and Orange networks.
- At times, the device became stuck with all PDP contexts empty on both networks, meaning no data was sent or received.
Since the issue occurred simultaneously on both networks, it is unlikely to be a network problem. It appears to be related to the device’s logic, as it intermittently functions but sometimes gets stuck with empty PDP contexts.
Questions:
Q1: What do you make of the explanation from 1NCE? Is there anything we can do from app level related to PDP context? We are not directly using/configuring it in any way, we use high level initializers.
Q2: 1NCE suggested we could blacklist an operator at their level, so the device only connects to one operator. But they told us to make sure if we ever want to switch, we need to reset the saved context that can get stored on the SIM.
How can we do that?
Thanks,
Geo
pic from 1NCE
